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github.com/stretchr/testify/assert

package assert

v1.5.1
Latest Go to latest
Published: Feb 19, 2020 | License: MIT | Module: github.com/stretchr/testify

Overview

Package assert provides a set of comprehensive testing tools for use with the normal Go testing system.

Example Usage

The following is a complete example using assert in a standard test function:

import (
  "testing"
  "github.com/stretchr/testify/assert"
)

func TestSomething(t *testing.T) {

  var a string = "Hello"
  var b string = "Hello"

  assert.Equal(t, a, b, "The two words should be the same.")

}

if you assert many times, use the format below:

import (
  "testing"
  "github.com/stretchr/testify/assert"
)

func TestSomething(t *testing.T) {
  assert := assert.New(t)

  var a string = "Hello"
  var b string = "Hello"

  assert.Equal(a, b, "The two words should be the same.")
}

Assertions

Assertions allow you to easily write test code, and are global funcs in the `assert` package. All assertion functions take, as the first argument, the `*testing.T` object provided by the testing framework. This allows the assertion funcs to write the failings and other details to the correct place.

Every assertion function also takes an optional string message as the final argument, allowing custom error messages to be appended to the message the assertion method outputs.

Index

Examples

Variables

var AnError = errors.New("assert.AnError general error for testing")

AnError is an error instance useful for testing. If the code does not care about error specifics, and only needs to return the error for example, this error should be used to make the test code more readable.

func CallerInfo

func CallerInfo() []string

CallerInfo returns an array of strings containing the file and line number of each stack frame leading from the current test to the assert call that failed.

func Condition

func Condition(t TestingT, comp Comparison, msgAndArgs ...interface{}) bool

Condition uses a Comparison to assert a complex condition.

func Conditionf

func Conditionf(t TestingT, comp Comparison, msg string, args ...interface{}) bool

Conditionf uses a Comparison to assert a complex condition.

func Contains

func Contains(t TestingT, s, contains interface{}, msgAndArgs ...interface{}) bool

Contains asserts that the specified string, list(array, slice...) or map contains the specified substring or element.

assert.Contains(t, "Hello World", "World")
assert.Contains(t, ["Hello", "World"], "World")
assert.Contains(t, {"Hello": "World"}, "Hello")

func Containsf

func Containsf(t TestingT, s interface{}, contains interface{}, msg string, args ...interface{}) bool

Containsf asserts that the specified string, list(array, slice...) or map contains the specified substring or element.

assert.Containsf(t, "Hello World", "World", "error message %s", "formatted")
assert.Containsf(t, ["Hello", "World"], "World", "error message %s", "formatted")
assert.Containsf(t, {"Hello": "World"}, "Hello", "error message %s", "formatted")

func DirExists

func DirExists(t TestingT, path string, msgAndArgs ...interface{}) bool

DirExists checks whether a directory exists in the given path. It also fails if the path is a file rather a directory or there is an error checking whether it exists.

func DirExistsf

func DirExistsf(t TestingT, path string, msg string, args ...interface{}) bool

DirExistsf checks whether a directory exists in the given path. It also fails if the path is a file rather a directory or there is an error checking whether it exists.

func ElementsMatch

func ElementsMatch(t TestingT, listA, listB interface{}, msgAndArgs ...interface{}) (ok bool)

ElementsMatch asserts that the specified listA(array, slice...) is equal to specified listB(array, slice...) ignoring the order of the elements. If there are duplicate elements, the number of appearances of each of them in both lists should match.

assert.ElementsMatch(t, [1, 3, 2, 3], [1, 3, 3, 2])

func ElementsMatchf

func ElementsMatchf(t TestingT, listA interface{}, listB interface{}, msg string, args ...interface{}) bool

ElementsMatchf asserts that the specified listA(array, slice...) is equal to specified listB(array, slice...) ignoring the order of the elements. If there are duplicate elements, the number of appearances of each of them in both lists should match.

assert.ElementsMatchf(t, [1, 3, 2, 3], [1, 3, 3, 2], "error message %s", "formatted")

func Empty

func Empty(t TestingT, object interface{}, msgAndArgs ...interface{}) bool

Empty asserts that the specified object is empty. I.e. nil, "", false, 0 or either a slice or a channel with len == 0.

assert.Empty(t, obj)

func Emptyf

func Emptyf(t TestingT, object interface{}, msg string, args ...interface{}) bool

Emptyf asserts that the specified object is empty. I.e. nil, "", false, 0 or either a slice or a channel with len == 0.

assert.Emptyf(t, obj, "error message %s", "formatted")

func Equal

func Equal(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool

Equal asserts that two objects are equal.

assert.Equal(t, 123, 123)

Pointer variable equality is determined based on the equality of the referenced values (as opposed to the memory addresses). Function equality cannot be determined and will always fail.

func EqualError

func EqualError(t TestingT, theError error, errString string, msgAndArgs ...interface{}) bool

EqualError asserts that a function returned an error (i.e. not `nil`) and that it is equal to the provided error.

actualObj, err := SomeFunction()
assert.EqualError(t, err,  expectedErrorString)

func EqualErrorf

func EqualErrorf(t TestingT, theError error, errString string, msg string, args ...interface{}) bool

EqualErrorf asserts that a function returned an error (i.e. not `nil`) and that it is equal to the provided error.

actualObj, err := SomeFunction()
assert.EqualErrorf(t, err,  expectedErrorString, "error message %s", "formatted")

func EqualValues

func EqualValues(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool

EqualValues asserts that two objects are equal or convertable to the same types and equal.

assert.EqualValues(t, uint32(123), int32(123))

func EqualValuesf

func EqualValuesf(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool

EqualValuesf asserts that two objects are equal or convertable to the same types and equal.

assert.EqualValuesf(t, uint32(123, "error message %s", "formatted"), int32(123))

func Equalf

func Equalf(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool

Equalf asserts that two objects are equal.

assert.Equalf(t, 123, 123, "error message %s", "formatted")

Pointer variable equality is determined based on the equality of the referenced values (as opposed to the memory addresses). Function equality cannot be determined and will always fail.

func Error

func Error(t TestingT, err error, msgAndArgs ...interface{}) bool

Error asserts that a function returned an error (i.e. not `nil`).

  actualObj, err := SomeFunction()
  if assert.Error(t, err) {
	   assert.Equal(t, expectedError, err)
  }

func Errorf

func Errorf(t TestingT, err error, msg string, args ...interface{}) bool

Errorf asserts that a function returned an error (i.e. not `nil`).

  actualObj, err := SomeFunction()
  if assert.Errorf(t, err, "error message %s", "formatted") {
	   assert.Equal(t, expectedErrorf, err)
  }

func Eventually

func Eventually(t TestingT, condition func() bool, waitFor time.Duration, tick time.Duration, msgAndArgs ...interface{}) bool

Eventually asserts that given condition will be met in waitFor time, periodically checking target function each tick.

assert.Eventually(t, func() bool { return true; }, time.Second, 10*time.Millisecond)

func Eventuallyf

func Eventuallyf(t TestingT, condition func() bool, waitFor time.Duration, tick time.Duration, msg string, args ...interface{}) bool

Eventuallyf asserts that given condition will be met in waitFor time, periodically checking target function each tick.

assert.Eventuallyf(t, func() bool { return true; }, time.Second, 10*time.Millisecond, "error message %s", "formatted")

func Exactly

func Exactly(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool

Exactly asserts that two objects are equal in value and type.

assert.Exactly(t, int32(123), int64(123))

func Exactlyf

func Exactlyf(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool

Exactlyf asserts that two objects are equal in value and type.

assert.Exactlyf(t, int32(123, "error message %s", "formatted"), int64(123))

func Fail

func Fail(t TestingT, failureMessage string, msgAndArgs ...interface{}) bool

Fail reports a failure through

func FailNow

func FailNow(t TestingT, failureMessage string, msgAndArgs ...interface{}) bool

FailNow fails test

func FailNowf

func FailNowf(t TestingT, failureMessage string, msg string, args ...interface{}) bool

FailNowf fails test

func Failf

func Failf(t TestingT, failureMessage string, msg string, args ...interface{}) bool

Failf reports a failure through

func False

func False(t TestingT, value bool, msgAndArgs ...interface{}) bool

False asserts that the specified value is false.

assert.False(t, myBool)

func Falsef

func Falsef(t TestingT, value bool, msg string, args ...interface{}) bool

Falsef asserts that the specified value is false.

assert.Falsef(t, myBool, "error message %s", "formatted")

func FileExists

func FileExists(t TestingT, path string, msgAndArgs ...interface{}) bool

FileExists checks whether a file exists in the given path. It also fails if the path points to a directory or there is an error when trying to check the file.

func FileExistsf

func FileExistsf(t TestingT, path string, msg string, args ...interface{}) bool

FileExistsf checks whether a file exists in the given path. It also fails if the path points to a directory or there is an error when trying to check the file.

func Greater

func Greater(t TestingT, e1 interface{}, e2 interface{}, msgAndArgs ...interface{}) bool

Greater asserts that the first element is greater than the second

assert.Greater(t, 2, 1)
assert.Greater(t, float64(2), float64(1))
assert.Greater(t, "b", "a")

func GreaterOrEqual

func GreaterOrEqual(t TestingT, e1 interface{}, e2 interface{}, msgAndArgs ...interface{}) bool

GreaterOrEqual asserts that the first element is greater than or equal to the second

assert.GreaterOrEqual(t, 2, 1)
assert.GreaterOrEqual(t, 2, 2)
assert.GreaterOrEqual(t, "b", "a")
assert.GreaterOrEqual(t, "b", "b")

func GreaterOrEqualf

func GreaterOrEqualf(t TestingT, e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool

GreaterOrEqualf asserts that the first element is greater than or equal to the second

assert.GreaterOrEqualf(t, 2, 1, "error message %s", "formatted")
assert.GreaterOrEqualf(t, 2, 2, "error message %s", "formatted")
assert.GreaterOrEqualf(t, "b", "a", "error message %s", "formatted")
assert.GreaterOrEqualf(t, "b", "b", "error message %s", "formatted")

func Greaterf

func Greaterf(t TestingT, e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool

Greaterf asserts that the first element is greater than the second

assert.Greaterf(t, 2, 1, "error message %s", "formatted")
assert.Greaterf(t, float64(2, "error message %s", "formatted"), float64(1))
assert.Greaterf(t, "b", "a", "error message %s", "formatted")

func HTTPBody

func HTTPBody(handler http.HandlerFunc, method, url string, values url.Values) string

HTTPBody is a helper that returns HTTP body of the response. It returns empty string if building a new request fails.

func HTTPBodyContains

func HTTPBodyContains(t TestingT, handler http.HandlerFunc, method, url string, values url.Values, str interface{}, msgAndArgs ...interface{}) bool

HTTPBodyContains asserts that a specified handler returns a body that contains a string.

assert.HTTPBodyContains(t, myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky")

Returns whether the assertion was successful (true) or not (false).

func HTTPBodyContainsf

func HTTPBodyContainsf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msg string, args ...interface{}) bool

HTTPBodyContainsf asserts that a specified handler returns a body that contains a string.

assert.HTTPBodyContainsf(t, myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")

Returns whether the assertion was successful (true) or not (false).

func HTTPBodyNotContains

func HTTPBodyNotContains(t TestingT, handler http.HandlerFunc, method, url string, values url.Values, str interface{}, msgAndArgs ...interface{}) bool

HTTPBodyNotContains asserts that a specified handler returns a body that does not contain a string.

assert.HTTPBodyNotContains(t, myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky")

Returns whether the assertion was successful (true) or not (false).

func HTTPBodyNotContainsf

func HTTPBodyNotContainsf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msg string, args ...interface{}) bool

HTTPBodyNotContainsf asserts that a specified handler returns a body that does not contain a string.

assert.HTTPBodyNotContainsf(t, myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")

Returns whether the assertion was successful (true) or not (false).

func HTTPError

func HTTPError(t TestingT, handler http.HandlerFunc, method, url string, values url.Values, msgAndArgs ...interface{}) bool

HTTPError asserts that a specified handler returns an error status code.

assert.HTTPError(t, myHandler, "POST", "/a/b/c", url.Values{"a": []string{"b", "c"}}

Returns whether the assertion was successful (true) or not (false).

func HTTPErrorf

func HTTPErrorf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) bool

HTTPErrorf asserts that a specified handler returns an error status code.

assert.HTTPErrorf(t, myHandler, "POST", "/a/b/c", url.Values{"a": []string{"b", "c"}}

Returns whether the assertion was successful (true, "error message %s", "formatted") or not (false).

func HTTPRedirect

func HTTPRedirect(t TestingT, handler http.HandlerFunc, method, url string, values url.Values, msgAndArgs ...interface{}) bool

HTTPRedirect asserts that a specified handler returns a redirect status code.

assert.HTTPRedirect(t, myHandler, "GET", "/a/b/c", url.Values{"a": []string{"b", "c"}}

Returns whether the assertion was successful (true) or not (false).

func HTTPRedirectf

func HTTPRedirectf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) bool

HTTPRedirectf asserts that a specified handler returns a redirect status code.

assert.HTTPRedirectf(t, myHandler, "GET", "/a/b/c", url.Values{"a": []string{"b", "c"}}

Returns whether the assertion was successful (true, "error message %s", "formatted") or not (false).

func HTTPSuccess

func HTTPSuccess(t TestingT, handler http.HandlerFunc, method, url string, values url.Values, msgAndArgs ...interface{}) bool

HTTPSuccess asserts that a specified handler returns a success status code.

assert.HTTPSuccess(t, myHandler, "POST", "http://www.google.com", nil)

Returns whether the assertion was successful (true) or not (false).

func HTTPSuccessf

func HTTPSuccessf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) bool

HTTPSuccessf asserts that a specified handler returns a success status code.

assert.HTTPSuccessf(t, myHandler, "POST", "http://www.google.com", nil, "error message %s", "formatted")

Returns whether the assertion was successful (true) or not (false).

func Implements

func Implements(t TestingT, interfaceObject interface{}, object interface{}, msgAndArgs ...interface{}) bool

Implements asserts that an object is implemented by the specified interface.

assert.Implements(t, (*MyInterface)(nil), new(MyObject))

func Implementsf

func Implementsf(t TestingT, interfaceObject interface{}, object interface{}, msg string, args ...interface{}) bool

Implementsf asserts that an object is implemented by the specified interface.

assert.Implementsf(t, (*MyInterface, "error message %s", "formatted")(nil), new(MyObject))

func InDelta

func InDelta(t TestingT, expected, actual interface{}, delta float64, msgAndArgs ...interface{}) bool

InDelta asserts that the two numerals are within delta of each other.

assert.InDelta(t, math.Pi, 22/7.0, 0.01)

func InDeltaMapValues

func InDeltaMapValues(t TestingT, expected, actual interface{}, delta float64, msgAndArgs ...interface{}) bool

InDeltaMapValues is the same as InDelta, but it compares all values between two maps. Both maps must have exactly the same keys.

func InDeltaMapValuesf

func InDeltaMapValuesf(t TestingT, expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) bool

InDeltaMapValuesf is the same as InDelta, but it compares all values between two maps. Both maps must have exactly the same keys.

func InDeltaSlice

func InDeltaSlice(t TestingT, expected, actual interface{}, delta float64, msgAndArgs ...interface{}) bool

InDeltaSlice is the same as InDelta, except it compares two slices.

func InDeltaSlicef

func InDeltaSlicef(t TestingT, expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) bool

InDeltaSlicef is the same as InDelta, except it compares two slices.

func InDeltaf

func InDeltaf(t TestingT, expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) bool

InDeltaf asserts that the two numerals are within delta of each other.

assert.InDeltaf(t, math.Pi, 22/7.0, 0.01, "error message %s", "formatted")

func InEpsilon

func InEpsilon(t TestingT, expected, actual interface{}, epsilon float64, msgAndArgs ...interface{}) bool

InEpsilon asserts that expected and actual have a relative error less than epsilon

func InEpsilonSlice

func InEpsilonSlice(t TestingT, expected, actual interface{}, epsilon float64, msgAndArgs ...interface{}) bool

InEpsilonSlice is the same as InEpsilon, except it compares each value from two slices.

func InEpsilonSlicef

func InEpsilonSlicef(t TestingT, expected interface{}, actual interface{}, epsilon float64, msg string, args ...interface{}) bool

InEpsilonSlicef is the same as InEpsilon, except it compares each value from two slices.

func InEpsilonf

func InEpsilonf(t TestingT, expected interface{}, actual interface{}, epsilon float64, msg string, args ...interface{}) bool

InEpsilonf asserts that expected and actual have a relative error less than epsilon

func IsType

func IsType(t TestingT, expectedType interface{}, object interface{}, msgAndArgs ...interface{}) bool

IsType asserts that the specified objects are of the same type.

func IsTypef

func IsTypef(t TestingT, expectedType interface{}, object interface{}, msg string, args ...interface{}) bool

IsTypef asserts that the specified objects are of the same type.

func JSONEq

func JSONEq(t TestingT, expected string, actual string, msgAndArgs ...interface{}) bool

JSONEq asserts that two JSON strings are equivalent.

assert.JSONEq(t, `{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`)

func JSONEqf

func JSONEqf(t TestingT, expected string, actual string, msg string, args ...interface{}) bool

JSONEqf asserts that two JSON strings are equivalent.

assert.JSONEqf(t, `{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`, "error message %s", "formatted")

func Len

func Len(t TestingT, object interface{}, length int, msgAndArgs ...interface{}) bool

Len asserts that the specified object has specific length. Len also fails if the object has a type that len() not accept.

assert.Len(t, mySlice, 3)

func Lenf

func Lenf(t TestingT, object interface{}, length int, msg string, args ...interface{}) bool

Lenf asserts that the specified object has specific length. Lenf also fails if the object has a type that len() not accept.

assert.Lenf(t, mySlice, 3, "error message %s", "formatted")

func Less

func Less(t TestingT, e1 interface{}, e2 interface{}, msgAndArgs ...interface{}) bool

Less asserts that the first element is less than the second

assert.Less(t, 1, 2)
assert.Less(t, float64(1), float64(2))
assert.Less(t, "a", "b")

func LessOrEqual

func LessOrEqual(t TestingT, e1 interface{}, e2 interface{}, msgAndArgs ...interface{}) bool

LessOrEqual asserts that the first element is less than or equal to the second

assert.LessOrEqual(t, 1, 2)
assert.LessOrEqual(t, 2, 2)
assert.LessOrEqual(t, "a", "b")
assert.LessOrEqual(t, "b", "b")

func LessOrEqualf

func LessOrEqualf(t TestingT, e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool

LessOrEqualf asserts that the first element is less than or equal to the second

assert.LessOrEqualf(t, 1, 2, "error message %s", "formatted")
assert.LessOrEqualf(t, 2, 2, "error message %s", "formatted")
assert.LessOrEqualf(t, "a", "b", "error message %s", "formatted")
assert.LessOrEqualf(t, "b", "b", "error message %s", "formatted")

func Lessf

func Lessf(t TestingT, e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool

Lessf asserts that the first element is less than the second

assert.Lessf(t, 1, 2, "error message %s", "formatted")
assert.Lessf(t, float64(1, "error message %s", "formatted"), float64(2))
assert.Lessf(t, "a", "b", "error message %s", "formatted")

func Never

func Never(t TestingT, condition func() bool, waitFor time.Duration, tick time.Duration, msgAndArgs ...interface{}) bool

Never asserts that the given condition doesn't satisfy in waitFor time, periodically checking the target function each tick.

assert.Never(t, func() bool { return false; }, time.Second, 10*time.Millisecond)

func Neverf

func Neverf(t TestingT, condition func() bool, waitFor time.Duration, tick time.Duration, msg string, args ...interface{}) bool

Neverf asserts that the given condition doesn't satisfy in waitFor time, periodically checking the target function each tick.

assert.Neverf(t, func() bool { return false; }, time.Second, 10*time.Millisecond, "error message %s", "formatted")

func Nil

func Nil(t TestingT, object interface{}, msgAndArgs ...interface{}) bool

Nil asserts that the specified object is nil.

assert.Nil(t, err)

func Nilf

func Nilf(t TestingT, object interface{}, msg string, args ...interface{}) bool

Nilf asserts that the specified object is nil.

assert.Nilf(t, err, "error message %s", "formatted")

func NoDirExists

func NoDirExists(t TestingT, path string, msgAndArgs ...interface{}) bool

NoDirExists checks whether a directory does not exist in the given path. It fails if the path points to an existing _directory_ only.

func NoDirExistsf

func NoDirExistsf(t TestingT, path string, msg string, args ...interface{}) bool

NoDirExistsf checks whether a directory does not exist in the given path. It fails if the path points to an existing _directory_ only.

func NoError

func NoError(t TestingT, err error, msgAndArgs ...interface{}) bool

NoError asserts that a function returned no error (i.e. `nil`).

  actualObj, err := SomeFunction()
  if assert.NoError(t, err) {
	   assert.Equal(t, expectedObj, actualObj)
  }

func NoErrorf

func NoErrorf(t TestingT, err error, msg string, args ...interface{}) bool

NoErrorf asserts that a function returned no error (i.e. `nil`).

  actualObj, err := SomeFunction()
  if assert.NoErrorf(t, err, "error message %s", "formatted") {
	   assert.Equal(t, expectedObj, actualObj)
  }

func NoFileExists

func NoFileExists(t TestingT, path string, msgAndArgs ...interface{}) bool

NoFileExists checks whether a file does not exist in a given path. It fails if the path points to an existing _file_ only.

func NoFileExistsf

func NoFileExistsf(t TestingT, path string, msg string, args ...interface{}) bool

NoFileExistsf checks whether a file does not exist in a given path. It fails if the path points to an existing _file_ only.

func NotContains

func NotContains(t TestingT, s, contains interface{}, msgAndArgs ...interface{}) bool

NotContains asserts that the specified string, list(array, slice...) or map does NOT contain the specified substring or element.

assert.NotContains(t, "Hello World", "Earth")
assert.NotContains(t, ["Hello", "World"], "Earth")
assert.NotContains(t, {"Hello": "World"}, "Earth")

func NotContainsf

func NotContainsf(t TestingT, s interface{}, contains interface{}, msg string, args ...interface{}) bool

NotContainsf asserts that the specified string, list(array, slice...) or map does NOT contain the specified substring or element.

assert.NotContainsf(t, "Hello World", "Earth", "error message %s", "formatted")
assert.NotContainsf(t, ["Hello", "World"], "Earth", "error message %s", "formatted")
assert.NotContainsf(t, {"Hello": "World"}, "Earth", "error message %s", "formatted")

func NotEmpty

func NotEmpty(t TestingT, object interface{}, msgAndArgs ...interface{}) bool

NotEmpty asserts that the specified object is NOT empty. I.e. not nil, "", false, 0 or either a slice or a channel with len == 0.

if assert.NotEmpty(t, obj) {
  assert.Equal(t, "two", obj[1])
}

func NotEmptyf

func NotEmptyf(t TestingT, object interface{}, msg string, args ...interface{}) bool

NotEmptyf asserts that the specified object is NOT empty. I.e. not nil, "", false, 0 or either a slice or a channel with len == 0.

if assert.NotEmptyf(t, obj, "error message %s", "formatted") {
  assert.Equal(t, "two", obj[1])
}

func NotEqual

func NotEqual(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool

NotEqual asserts that the specified values are NOT equal.

assert.NotEqual(t, obj1, obj2)

Pointer variable equality is determined based on the equality of the referenced values (as opposed to the memory addresses).

func NotEqualf

func NotEqualf(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool

NotEqualf asserts that the specified values are NOT equal.

assert.NotEqualf(t, obj1, obj2, "error message %s", "formatted")

Pointer variable equality is determined based on the equality of the referenced values (as opposed to the memory addresses).

func NotNil

func NotNil(t TestingT, object interface{}, msgAndArgs ...interface{}) bool

NotNil asserts that the specified object is not nil.

assert.NotNil(t, err)

func NotNilf

func NotNilf(t TestingT, object interface{}, msg string, args ...interface{}) bool

NotNilf asserts that the specified object is not nil.

assert.NotNilf(t, err, "error message %s", "formatted")

func NotPanics

func NotPanics(t TestingT, f PanicTestFunc, msgAndArgs ...interface{}) bool

NotPanics asserts that the code inside the specified PanicTestFunc does NOT panic.

assert.NotPanics(t, func(){ RemainCalm() })

func NotPanicsf

func NotPanicsf(t TestingT, f PanicTestFunc, msg string, args ...interface{}) bool

NotPanicsf asserts that the code inside the specified PanicTestFunc does NOT panic.

assert.NotPanicsf(t, func(){ RemainCalm() }, "error message %s", "formatted")

func NotRegexp

func NotRegexp(t TestingT, rx interface{}, str interface{}, msgAndArgs ...interface{}) bool

NotRegexp asserts that a specified regexp does not match a string.

assert.NotRegexp(t, regexp.MustCompile("starts"), "it's starting")
assert.NotRegexp(t, "^start", "it's not starting")

func NotRegexpf

func NotRegexpf(t TestingT, rx interface{}, str interface{}, msg string, args ...interface{}) bool

NotRegexpf asserts that a specified regexp does not match a string.

assert.NotRegexpf(t, regexp.MustCompile("starts", "error message %s", "formatted"), "it's starting")
assert.NotRegexpf(t, "^start", "it's not starting", "error message %s", "formatted")

func NotSame

func NotSame(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool

NotSame asserts that two pointers do not reference the same object.

assert.NotSame(t, ptr1, ptr2)

Both arguments must be pointer variables. Pointer variable sameness is determined based on the equality of both type and value.

func NotSamef

func NotSamef(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool

NotSamef asserts that two pointers do not reference the same object.

assert.NotSamef(t, ptr1, ptr2, "error message %s", "formatted")

Both arguments must be pointer variables. Pointer variable sameness is determined based on the equality of both type and value.

func NotSubset

func NotSubset(t TestingT, list, subset interface{}, msgAndArgs ...interface{}) (ok bool)

NotSubset asserts that the specified list(array, slice...) contains not all elements given in the specified subset(array, slice...).

assert.NotSubset(t, [1, 3, 4], [1, 2], "But [1, 3, 4] does not contain [1, 2]")

func NotSubsetf

func NotSubsetf(t TestingT, list interface{}, subset interface{}, msg string, args ...interface{}) bool

NotSubsetf asserts that the specified list(array, slice...) contains not all elements given in the specified subset(array, slice...).

assert.NotSubsetf(t, [1, 3, 4], [1, 2], "But [1, 3, 4] does not contain [1, 2]", "error message %s", "formatted")

func NotZero

func NotZero(t TestingT, i interface{}, msgAndArgs ...interface{}) bool

NotZero asserts that i is not the zero value for its type.

func NotZerof

func NotZerof(t TestingT, i interface{}, msg string, args ...interface{}) bool

NotZerof asserts that i is not the zero value for its type.

func ObjectsAreEqual

func ObjectsAreEqual(expected, actual interface{}) bool

ObjectsAreEqual determines if two objects are considered equal.

This function does no assertion of any kind.

func ObjectsAreEqualValues

func ObjectsAreEqualValues(expected, actual interface{}) bool

ObjectsAreEqualValues gets whether two objects are equal, or if their values are equal.

func Panics

func Panics(t TestingT, f PanicTestFunc, msgAndArgs ...interface{}) bool

Panics asserts that the code inside the specified PanicTestFunc panics.

assert.Panics(t, func(){ GoCrazy() })

func PanicsWithError

func PanicsWithError(t TestingT, errString string, f PanicTestFunc, msgAndArgs ...interface{}) bool

PanicsWithError asserts that the code inside the specified PanicTestFunc panics, and that the recovered panic value is an error that satisfies the EqualError comparison.

assert.PanicsWithError(t, "crazy error", func(){ GoCrazy() })

func PanicsWithErrorf

func PanicsWithErrorf(t TestingT, errString string, f PanicTestFunc, msg string, args ...interface{}) bool

PanicsWithErrorf asserts that the code inside the specified PanicTestFunc panics, and that the recovered panic value is an error that satisfies the EqualError comparison.

assert.PanicsWithErrorf(t, "crazy error", func(){ GoCrazy() }, "error message %s", "formatted")

func PanicsWithValue

func PanicsWithValue(t TestingT, expected interface{}, f PanicTestFunc, msgAndArgs ...interface{}) bool

PanicsWithValue asserts that the code inside the specified PanicTestFunc panics, and that the recovered panic value equals the expected panic value.

assert.PanicsWithValue(t, "crazy error", func(){ GoCrazy() })

func PanicsWithValuef

func PanicsWithValuef(t TestingT, expected interface{}, f PanicTestFunc, msg string, args ...interface{}) bool

PanicsWithValuef asserts that the code inside the specified PanicTestFunc panics, and that the recovered panic value equals the expected panic value.

assert.PanicsWithValuef(t, "crazy error", func(){ GoCrazy() }, "error message %s", "formatted")

func Panicsf

func Panicsf(t TestingT, f PanicTestFunc, msg string, args ...interface{}) bool

Panicsf asserts that the code inside the specified PanicTestFunc panics.

assert.Panicsf(t, func(){ GoCrazy() }, "error message %s", "formatted")

func Regexp

func Regexp(t TestingT, rx interface{}, str interface{}, msgAndArgs ...interface{}) bool

Regexp asserts that a specified regexp matches a string.

assert.Regexp(t, regexp.MustCompile("start"), "it's starting")
assert.Regexp(t, "start...$", "it's not starting")

func Regexpf

func Regexpf(t TestingT, rx interface{}, str interface{}, msg string, args ...interface{}) bool

Regexpf asserts that a specified regexp matches a string.

assert.Regexpf(t, regexp.MustCompile("start", "error message %s", "formatted"), "it's starting")
assert.Regexpf(t, "start...$", "it's not starting", "error message %s", "formatted")

func Same

func Same(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool

Same asserts that two pointers reference the same object.

assert.Same(t, ptr1, ptr2)

Both arguments must be pointer variables. Pointer variable sameness is determined based on the equality of both type and value.

func Samef

func Samef(t TestingT, expected interface{}, actual interface{}, msg string, args ...interface{}) bool

Samef asserts that two pointers reference the same object.

assert.Samef(t, ptr1, ptr2, "error message %s", "formatted")

Both arguments must be pointer variables. Pointer variable sameness is determined based on the equality of both type and value.

func Subset

func Subset(t TestingT, list, subset interface{}, msgAndArgs ...interface{}) (ok bool)

Subset asserts that the specified list(array, slice...) contains all elements given in the specified subset(array, slice...).

assert.Subset(t, [1, 2, 3], [1, 2], "But [1, 2, 3] does contain [1, 2]")

func Subsetf

func Subsetf(t TestingT, list interface{}, subset interface{}, msg string, args ...interface{}) bool

Subsetf asserts that the specified list(array, slice...) contains all elements given in the specified subset(array, slice...).

assert.Subsetf(t, [1, 2, 3], [1, 2], "But [1, 2, 3] does contain [1, 2]", "error message %s", "formatted")

func True

func True(t TestingT, value bool, msgAndArgs ...interface{}) bool

True asserts that the specified value is true.

assert.True(t, myBool)

func Truef

func Truef(t TestingT, value bool, msg string, args ...interface{}) bool

Truef asserts that the specified value is true.

assert.Truef(t, myBool, "error message %s", "formatted")

func WithinDuration

func WithinDuration(t TestingT, expected, actual time.Time, delta time.Duration, msgAndArgs ...interface{}) bool

WithinDuration asserts that the two times are within duration delta of each other.

assert.WithinDuration(t, time.Now(), time.Now(), 10*time.Second)

func WithinDurationf

func WithinDurationf(t TestingT, expected time.Time, actual time.Time, delta time.Duration, msg string, args ...interface{}) bool

WithinDurationf asserts that the two times are within duration delta of each other.

assert.WithinDurationf(t, time.Now(), time.Now(), 10*time.Second, "error message %s", "formatted")

func YAMLEq

func YAMLEq(t TestingT, expected string, actual string, msgAndArgs ...interface{}) bool

YAMLEq asserts that two YAML strings are equivalent.

func YAMLEqf

func YAMLEqf(t TestingT, expected string, actual string, msg string, args ...interface{}) bool

YAMLEqf asserts that two YAML strings are equivalent.

func Zero

func Zero(t TestingT, i interface{}, msgAndArgs ...interface{}) bool

Zero asserts that i is the zero value for its type.

func Zerof

func Zerof(t TestingT, i interface{}, msg string, args ...interface{}) bool

Zerof asserts that i is the zero value for its type.

type Assertions

type Assertions struct {
	// contains filtered or unexported fields
}

Assertions provides assertion methods around the TestingT interface.

func New

func New(t TestingT) *Assertions

New makes a new Assertions object for the specified TestingT.

func (*Assertions) Condition

func (a *Assertions) Condition(comp Comparison, msgAndArgs ...interface{}) bool

Condition uses a Comparison to assert a complex condition.

func (*Assertions) Conditionf

func (a *Assertions) Conditionf(comp Comparison, msg string, args ...interface{}) bool

Conditionf uses a Comparison to assert a complex condition.

func (*Assertions) Contains

func (a *Assertions) Contains(s interface{}, contains interface{}, msgAndArgs ...interface{}) bool

Contains asserts that the specified string, list(array, slice...) or map contains the specified substring or element.

a.Contains("Hello World", "World")
a.Contains(["Hello", "World"], "World")
a.Contains({"Hello": "World"}, "Hello")

func (*Assertions) Containsf

func (a *Assertions) Containsf(s interface{}, contains interface{}, msg string, args ...interface{}) bool

Containsf asserts that the specified string, list(array, slice...) or map contains the specified substring or element.

a.Containsf("Hello World", "World", "error message %s", "formatted")
a.Containsf(["Hello", "World"], "World", "error message %s", "formatted")
a.Containsf({"Hello": "World"}, "Hello", "error message %s", "formatted")

func (*Assertions) DirExists

func (a *Assertions) DirExists(path string, msgAndArgs ...interface{}) bool

DirExists checks whether a directory exists in the given path. It also fails if the path is a file rather a directory or there is an error checking whether it exists.

func (*Assertions) DirExistsf

func (a *Assertions) DirExistsf(path string, msg string, args ...interface{}) bool

DirExistsf checks whether a directory exists in the given path. It also fails if the path is a file rather a directory or there is an error checking whether it exists.

func (*Assertions) ElementsMatch

func (a *Assertions) ElementsMatch(listA interface{}, listB interface{}, msgAndArgs ...interface{}) bool

ElementsMatch asserts that the specified listA(array, slice...) is equal to specified listB(array, slice...) ignoring the order of the elements. If there are duplicate elements, the number of appearances of each of them in both lists should match.

a.ElementsMatch([1, 3, 2, 3], [1, 3, 3, 2])

func (*Assertions) ElementsMatchf

func (a *Assertions) ElementsMatchf(listA interface{}, listB interface{}, msg string, args ...interface{}) bool

ElementsMatchf asserts that the specified listA(array, slice...) is equal to specified listB(array, slice...) ignoring the order of the elements. If there are duplicate elements, the number of appearances of each of them in both lists should match.

a.ElementsMatchf([1, 3, 2, 3], [1, 3, 3, 2], "error message %s", "formatted")

func (*Assertions) Empty

func (a *Assertions) Empty(object interface{}, msgAndArgs ...interface{}) bool

Empty asserts that the specified object is empty. I.e. nil, "", false, 0 or either a slice or a channel with len == 0.

a.Empty(obj)

func (*Assertions) Emptyf

func (a *Assertions) Emptyf(object interface{}, msg string, args ...interface{}) bool

Emptyf asserts that the specified object is empty. I.e. nil, "", false, 0 or either a slice or a channel with len == 0.

a.Emptyf(obj, "error message %s", "formatted")

func (*Assertions) Equal

func (a *Assertions) Equal(expected interface{}, actual interface{}, msgAndArgs ...interface{}) bool

Equal asserts that two objects are equal.

a.Equal(123, 123)

Pointer variable equality is determined based on the equality of the referenced values (as opposed to the memory addresses). Function equality cannot be determined and will always fail.

func (*Assertions) EqualError

func (a *Assertions) EqualError(theError error, errString string, msgAndArgs ...interface{}) bool

EqualError asserts that a function returned an error (i.e. not `nil`) and that it is equal to the provided error.

actualObj, err := SomeFunction()
a.EqualError(err,  expectedErrorString)

func (*Assertions) EqualErrorf

func (a *Assertions) EqualErrorf(theError error, errString string, msg string, args ...interface{}) bool

EqualErrorf asserts that a function returned an error (i.e. not `nil`) and that it is equal to the provided error.

actualObj, err := SomeFunction()
a.EqualErrorf(err,  expectedErrorString, "error message %s", "formatted")

func (*Assertions) EqualValues

func (a *Assertions) EqualValues(expected interface{}, actual interface{}, msgAndArgs ...interface{}) bool

EqualValues asserts that two objects are equal or convertable to the same types and equal.

a.EqualValues(uint32(123), int32(123))

func (*Assertions) EqualValuesf

func (a *Assertions) EqualValuesf(expected interface{}, actual interface{}, msg string, args ...interface{}) bool

EqualValuesf asserts that two objects are equal or convertable to the same types and equal.

a.EqualValuesf(uint32(123, "error message %s", "formatted"), int32(123))

func (*Assertions) Equalf

func (a *Assertions) Equalf(expected interface{}, actual interface{}, msg string, args ...interface{}) bool

Equalf asserts that two objects are equal.

a.Equalf(123, 123, "error message %s", "formatted")

Pointer variable equality is determined based on the equality of the referenced values (as opposed to the memory addresses). Function equality cannot be determined and will always fail.

func (*Assertions) Error

func (a *Assertions) Error(err error, msgAndArgs ...interface{}) bool

Error asserts that a function returned an error (i.e. not `nil`).

  actualObj, err := SomeFunction()
  if a.Error(err) {
	   assert.Equal(t, expectedError, err)
  }

func (*Assertions) Errorf

func (a *Assertions) Errorf(err error, msg string, args ...interface{}) bool

Errorf asserts that a function returned an error (i.e. not `nil`).

  actualObj, err := SomeFunction()
  if a.Errorf(err, "error message %s", "formatted") {
	   assert.Equal(t, expectedErrorf, err)
  }

func (*Assertions) Eventually

func (a *Assertions) Eventually(condition func() bool, waitFor time.Duration, tick time.Duration, msgAndArgs ...interface{}) bool

Eventually asserts that given condition will be met in waitFor time, periodically checking target function each tick.

a.Eventually(func() bool { return true; }, time.Second, 10*time.Millisecond)

func (*Assertions) Eventuallyf

func (a *Assertions) Eventuallyf(condition func() bool, waitFor time.Duration, tick time.Duration, msg string, args ...interface{}) bool

Eventuallyf asserts that given condition will be met in waitFor time, periodically checking target function each tick.

a.Eventuallyf(func() bool { return true; }, time.Second, 10*time.Millisecond, "error message %s", "formatted")

func (*Assertions) Exactly

func (a *Assertions) Exactly(expected interface{}, actual interface{}, msgAndArgs ...interface{}) bool

Exactly asserts that two objects are equal in value and type.

a.Exactly(int32(123), int64(123))

func (*Assertions) Exactlyf

func (a *Assertions) Exactlyf(expected interface{}, actual interface{}, msg string, args ...interface{}) bool

Exactlyf asserts that two objects are equal in value and type.

a.Exactlyf(int32(123, "error message %s", "formatted"), int64(123))

func (*Assertions) Fail

func (a *Assertions) Fail(failureMessage string, msgAndArgs ...interface{}) bool

Fail reports a failure through

func (*Assertions) FailNow

func (a *Assertions) FailNow(failureMessage string, msgAndArgs ...interface{}) bool

FailNow fails test

func (*Assertions) FailNowf

func (a *Assertions) FailNowf(failureMessage string, msg string, args ...interface{}) bool

FailNowf fails test

func (*Assertions) Failf

func (a *Assertions) Failf(failureMessage string, msg string, args ...interface{}) bool

Failf reports a failure through

func (*Assertions) False

func (a *Assertions) False(value bool, msgAndArgs ...interface{}) bool

False asserts that the specified value is false.

a.False(myBool)

func (*Assertions) Falsef

func (a *Assertions) Falsef(value bool, msg string, args ...interface{}) bool

Falsef asserts that the specified value is false.

a.Falsef(myBool, "error message %s", "formatted")

func (*Assertions) FileExists

func (a *Assertions) FileExists(path string, msgAndArgs ...interface{}) bool

FileExists checks whether a file exists in the given path. It also fails if the path points to a directory or there is an error when trying to check the file.

func (*Assertions) FileExistsf

func (a *Assertions) FileExistsf(path string, msg string, args ...interface{}) bool

FileExistsf checks whether a file exists in the given path. It also fails if the path points to a directory or there is an error when trying to check the file.

func (*Assertions) Greater

func (a *Assertions) Greater(e1 interface{}, e2 interface{}, msgAndArgs ...interface{}) bool

Greater asserts that the first element is greater than the second

a.Greater(2, 1)
a.Greater(float64(2), float64(1))
a.Greater("b", "a")

func (*Assertions) GreaterOrEqual

func (a *Assertions) GreaterOrEqual(e1 interface{}, e2 interface{}, msgAndArgs ...interface{}) bool

GreaterOrEqual asserts that the first element is greater than or equal to the second

a.GreaterOrEqual(2, 1)
a.GreaterOrEqual(2, 2)
a.GreaterOrEqual("b", "a")
a.GreaterOrEqual("b", "b")

func (*Assertions) GreaterOrEqualf

func (a *Assertions) GreaterOrEqualf(e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool

GreaterOrEqualf asserts that the first element is greater than or equal to the second

a.GreaterOrEqualf(2, 1, "error message %s", "formatted")
a.GreaterOrEqualf(2, 2, "error message %s", "formatted")
a.GreaterOrEqualf("b", "a", "error message %s", "formatted")
a.GreaterOrEqualf("b", "b", "error message %s", "formatted")

func (*Assertions) Greaterf

func (a *Assertions) Greaterf(e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool

Greaterf asserts that the first element is greater than the second

a.Greaterf(2, 1, "error message %s", "formatted")
a.Greaterf(float64(2, "error message %s", "formatted"), float64(1))
a.Greaterf("b", "a", "error message %s", "formatted")

func (*Assertions) HTTPBodyContains

func (a *Assertions) HTTPBodyContains(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msgAndArgs ...interface{}) bool

HTTPBodyContains asserts that a specified handler returns a body that contains a string.

a.HTTPBodyContains(myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky")

Returns whether the assertion was successful (true) or not (false).

func (*Assertions) HTTPBodyContainsf

func (a *Assertions) HTTPBodyContainsf(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msg string, args ...interface{}) bool

HTTPBodyContainsf asserts that a specified handler returns a body that contains a string.

a.HTTPBodyContainsf(myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")

Returns whether the assertion was successful (true) or not (false).

func (*Assertions) HTTPBodyNotContains

func (a *Assertions) HTTPBodyNotContains(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msgAndArgs ...interface{}) bool

HTTPBodyNotContains asserts that a specified handler returns a body that does not contain a string.

a.HTTPBodyNotContains(myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky")

Returns whether the assertion was successful (true) or not (false).

func (*Assertions) HTTPBodyNotContainsf

func (a *Assertions) HTTPBodyNotContainsf(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msg string, args ...interface{}) bool

HTTPBodyNotContainsf asserts that a specified handler returns a body that does not contain a string.

a.HTTPBodyNotContainsf(myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")

Returns whether the assertion was successful (true) or not (false).

func (*Assertions) HTTPError

func (a *Assertions) HTTPError(handler http.HandlerFunc, method string, url string, values url.Values, msgAndArgs ...interface{}) bool

HTTPError asserts that a specified handler returns an error status code.

a.HTTPError(myHandler, "POST", "/a/b/c", url.Values{"a": []string{"b", "c"}}

Returns whether the assertion was successful (true) or not (false).

func (*Assertions) HTTPErrorf

func (a *Assertions) HTTPErrorf(handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) bool

HTTPErrorf asserts that a specified handler returns an error status code.

a.HTTPErrorf(myHandler, "POST", "/a/b/c", url.Values{"a": []string{"b", "c"}}

Returns whether the assertion was successful (true, "error message %s", "formatted") or not (false).

func (*Assertions) HTTPRedirect

func (a *Assertions) HTTPRedirect(handler http.HandlerFunc, method string, url string, values url.Values, msgAndArgs ...interface{}) bool

HTTPRedirect asserts that a specified handler returns a redirect status code.

a.HTTPRedirect(myHandler, "GET", "/a/b/c", url.Values{"a": []string{"b", "c"}}

Returns whether the assertion was successful (true) or not (false).

func (*Assertions) HTTPRedirectf

func (a *Assertions) HTTPRedirectf(handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) bool

HTTPRedirectf asserts that a specified handler returns a redirect status code.

a.HTTPRedirectf(myHandler, "GET", "/a/b/c", url.Values{"a": []string{"b", "c"}}

Returns whether the assertion was successful (true, "error message %s", "formatted") or not (false).

func (*Assertions) HTTPSuccess

func (a *Assertions) HTTPSuccess(handler http.HandlerFunc, method string, url string, values url.Values, msgAndArgs ...interface{}) bool

HTTPSuccess asserts that a specified handler returns a success status code.

a.HTTPSuccess(myHandler, "POST", "http://www.google.com", nil)

Returns whether the assertion was successful (true) or not (false).

func (*Assertions) HTTPSuccessf

func (a *Assertions) HTTPSuccessf(handler http.HandlerFunc, method string, url string, values url.Values, msg string, args ...interface{}) bool

HTTPSuccessf asserts that a specified handler returns a success status code.

a.HTTPSuccessf(myHandler, "POST", "http://www.google.com", nil, "error message %s", "formatted")

Returns whether the assertion was successful (true) or not (false).

func (*Assertions) Implements

func (a *Assertions) Implements(interfaceObject interface{}, object interface{}, msgAndArgs ...interface{}) bool

Implements asserts that an object is implemented by the specified interface.

a.Implements((*MyInterface)(nil), new(MyObject))

func (*Assertions) Implementsf

func (a *Assertions) Implementsf(interfaceObject interface{}, object interface{}, msg string, args ...interface{}) bool

Implementsf asserts that an object is implemented by the specified interface.

a.Implementsf((*MyInterface, "error message %s", "formatted")(nil), new(MyObject))

func (*Assertions) InDelta

func (a *Assertions) InDelta(expected interface{}, actual interface{}, delta float64, msgAndArgs ...interface{}) bool

InDelta asserts that the two numerals are within delta of each other.

a.InDelta(math.Pi, 22/7.0, 0.01)

func (*Assertions) InDeltaMapValues

func (a *Assertions) InDeltaMapValues(expected interface{}, actual interface{}, delta float64, msgAndArgs ...interface{}) bool

InDeltaMapValues is the same as InDelta, but it compares all values between two maps. Both maps must have exactly the same keys.

func (*Assertions) InDeltaMapValuesf

func (a *Assertions) InDeltaMapValuesf(expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) bool

InDeltaMapValuesf is the same as InDelta, but it compares all values between two maps. Both maps must have exactly the same keys.

func (*Assertions) InDeltaSlice

func (a *Assertions) InDeltaSlice(expected interface{}, actual interface{}, delta float64, msgAndArgs ...interface{}) bool

InDeltaSlice is the same as InDelta, except it compares two slices.

func (*Assertions) InDeltaSlicef

func (a *Assertions) InDeltaSlicef(expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) bool

InDeltaSlicef is the same as InDelta, except it compares two slices.

func (*Assertions) InDeltaf

func (a *Assertions) InDeltaf(expected interface{}, actual interface{}, delta float64, msg string, args ...interface{}) bool

InDeltaf asserts that the two numerals are within delta of each other.

a.InDeltaf(math.Pi, 22/7.0, 0.01, "error message %s", "formatted")

func (*Assertions) InEpsilon

func (a *Assertions) InEpsilon(expected interface{}, actual interface{}, epsilon float64, msgAndArgs ...interface{}) bool

InEpsilon asserts that expected and actual have a relative error less than epsilon

func (*Assertions) InEpsilonSlice

func (a *Assertions) InEpsilonSlice(expected interface{}, actual interface{}, epsilon float64, msgAndArgs ...interface{}) bool

InEpsilonSlice is the same as InEpsilon, except it compares each value from two slices.

func (*Assertions) InEpsilonSlicef

func (a *Assertions) InEpsilonSlicef(expected interface{}, actual interface{}, epsilon float64, msg string, args ...interface{}) bool

InEpsilonSlicef is the same as InEpsilon, except it compares each value from two slices.

func (*Assertions) InEpsilonf

func (a *Assertions) InEpsilonf(expected interface{}, actual interface{}, epsilon float64, msg string, args ...interface{}) bool

InEpsilonf asserts that expected and actual have a relative error less than epsilon

func (*Assertions) IsType

func (a *Assertions) IsType(expectedType interface{}, object interface{}, msgAndArgs ...interface{}) bool

IsType asserts that the specified objects are of the same type.

func (*Assertions) IsTypef

func (a *Assertions) IsTypef(expectedType interface{}, object interface{}, msg string, args ...interface{}) bool

IsTypef asserts that the specified objects are of the same type.

func (*Assertions) JSONEq

func (a *Assertions) JSONEq(expected string, actual string, msgAndArgs ...interface{}) bool

JSONEq asserts that two JSON strings are equivalent.

a.JSONEq(`{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`)

func (*Assertions) JSONEqf

func (a *Assertions) JSONEqf(expected string, actual string, msg string, args ...interface{}) bool

JSONEqf asserts that two JSON strings are equivalent.

a.JSONEqf(`{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`, "error message %s", "formatted")

func (*Assertions) Len

func (a *Assertions) Len(object interface{}, length int, msgAndArgs ...interface{}) bool

Len asserts that the specified object has specific length. Len also fails if the object has a type that len() not accept.

a.Len(mySlice, 3)

func (*Assertions) Lenf

func (a *Assertions) Lenf(object interface{}, length int, msg string, args ...interface{}) bool

Lenf asserts that the specified object has specific length. Lenf also fails if the object has a type that len() not accept.

a.Lenf(mySlice, 3, "error message %s", "formatted")

func (*Assertions) Less

func (a *Assertions) Less(e1 interface{}, e2 interface{}, msgAndArgs ...interface{}) bool

Less asserts that the first element is less than the second

a.Less(1, 2)
a.Less(float64(1), float64(2))
a.Less("a", "b")

func (*Assertions) LessOrEqual

func (a *Assertions) LessOrEqual(e1 interface{}, e2 interface{}, msgAndArgs ...interface{}) bool

LessOrEqual asserts that the first element is less than or equal to the second

a.LessOrEqual(1, 2)
a.LessOrEqual(2, 2)
a.LessOrEqual("a", "b")
a.LessOrEqual("b", "b")

func (*Assertions) LessOrEqualf

func (a *Assertions) LessOrEqualf(e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool

LessOrEqualf asserts that the first element is less than or equal to the second

a.LessOrEqualf(1, 2, "error message %s", "formatted")
a.LessOrEqualf(2, 2, "error message %s", "formatted")
a.LessOrEqualf("a", "b", "error message %s", "formatted")
a.LessOrEqualf("b", "b", "error message %s", "formatted")

func (*Assertions) Lessf

func (a *Assertions) Lessf(e1 interface{}, e2 interface{}, msg string, args ...interface{}) bool

Lessf asserts that the first element is less than the second

a.Lessf(1, 2, "error message %s", "formatted")
a.Lessf(float64(1, "error message %s", "formatted"), float64(2))
a.Lessf("a", "b", "error message %s", "formatted")

func (*Assertions) Never

func (a *Assertions) Never(condition func() bool, waitFor time.Duration, tick time.Duration, msgAndArgs ...interface{}) bool

Never asserts that the given condition doesn't satisfy in waitFor time, periodically checking the target function each tick.

a.Never(func() bool { return false; }, time.Second, 10*time.Millisecond)

func (*Assertions) Neverf

func (a *Assertions) Neverf(condition func() bool, waitFor time.Duration, tick time.Duration, msg string, args ...interface{}) bool

Neverf asserts that the given condition doesn't satisfy in waitFor time, periodically checking the target function each tick.

a.Neverf(func() bool { return false; }, time.Second, 10*time.Millisecond, "error message %s", "formatted")

func (*Assertions) Nil

func (a *Assertions) Nil(object interface{}, msgAndArgs ...interface{}) bool

Nil asserts that the specified object is nil.

a.Nil(err)

func (*Assertions) Nilf

func (a *Assertions) Nilf(object interface{}, msg string, args ...interface{}) bool

Nilf asserts that the specified object is nil.

a.Nilf(err, "error message %s", "formatted")

func (*Assertions) NoDirExists

func (a *Assertions) NoDirExists(path string, msgAndArgs ...interface{}) bool

NoDirExists checks whether a directory does not exist in the given path. It fails if the path points to an existing _directory_ only.

func (*Assertions) NoDirExistsf

func (a *Assertions) NoDirExistsf(path string, msg string, args ...interface{}) bool

NoDirExistsf checks whether a directory does not exist in the given path. It fails if the path points to an existing _directory_ only.

func (*Assertions) NoError

func (a *Assertions) NoError(err error, msgAndArgs ...interface{}) bool

NoError asserts that a function returned no error (i.e. `nil`).

  actualObj, err := SomeFunction()
  if a.NoError(err) {
	   assert.Equal(t, expectedObj, actualObj)
  }

func (*Assertions) NoErrorf

func (a *Assertions) NoErrorf(err error, msg string, args ...interface{}) bool

NoErrorf asserts that a function returned no error (i.e. `nil`).

  actualObj, err := SomeFunction()
  if a.NoErrorf(err, "error message %s", "formatted") {
	   assert.Equal(t, expectedObj, actualObj)
  }

func (*Assertions) NoFileExists

func (a *Assertions) NoFileExists(path string, msgAndArgs ...interface{}) bool

NoFileExists checks whether a file does not exist in a given path. It fails if the path points to an existing _file_ only.

func (*Assertions) NoFileExistsf

func (a *Assertions) NoFileExistsf(path string, msg string, args ...interface{}) bool

NoFileExistsf checks whether a file does not exist in a given path. It fails if the path points to an existing _file_ only.

func (*Assertions) NotContains

func (a *Assertions) NotContains(s interface{}, contains interface{}, msgAndArgs ...interface{}) bool

NotContains asserts that the specified string, list(array, slice...) or map does NOT contain the specified substring or element.

a.NotContains("Hello World", "Earth")
a.NotContains(["Hello", "World"], "Earth")
a.NotContains({"Hello": "World"}, "Earth")

func (*Assertions) NotContainsf

func (a *Assertions) NotContainsf(s interface{}, contains interface{}, msg string, args ...interface{}) bool

NotContainsf asserts that the specified string, list(array, slice...) or map does NOT contain the specified substring or element.

a.NotContainsf("Hello World", "Earth", "error message %s", "formatted")
a.NotContainsf(["Hello", "World"], "Earth", "error message %s", "formatted")
a.NotContainsf({"Hello": "World"}, "Earth", "error message %s", "formatted")

func (*Assertions) NotEmpty

func (a *Assertions) NotEmpty(object interface{}, msgAndArgs ...interface{}) bool

NotEmpty asserts that the specified object is NOT empty. I.e. not nil, "", false, 0 or either a slice or a channel with len == 0.

if a.NotEmpty(obj) {
  assert.Equal(t, "two", obj[1])
}

func (*Assertions) NotEmptyf

func (a *Assertions) NotEmptyf(object interface{}, msg string, args ...interface{}) bool

NotEmptyf asserts that the specified object is NOT empty. I.e. not nil, "", false, 0 or either a slice or a channel with len == 0.

if a.NotEmptyf(obj, "error message %s", "formatted") {
  assert.Equal(t, "two", obj[1])
}

func (*Assertions) NotEqual

func (a *Assertions) NotEqual(expected interface{}, actual interface{}, msgAndArgs ...interface{}) bool

NotEqual asserts that the specified values are NOT equal.

a.NotEqual(obj1, obj2)

Pointer variable equality is determined based on the equality of the referenced values (as opposed to the memory addresses).

func (*Assertions) NotEqualf

func (a *Assertions) NotEqualf(expected interface{}, actual interface{}, msg string, args ...interface{}) bool

NotEqualf asserts that the specified values are NOT equal.

a.NotEqualf(obj1, obj2, "error message %s", "formatted")

Pointer variable equality is determined based on the equality of the referenced values (as opposed to the memory addresses).

func (*Assertions) NotNil

func (a *Assertions) NotNil(object interface{}, msgAndArgs ...interface{}) bool

NotNil asserts that the specified object is not nil.

a.NotNil(err)

func (*Assertions) NotNilf

func (a *Assertions) NotNilf(object interface{}, msg string, args ...interface{}) bool

NotNilf asserts that the specified object is not nil.

a.NotNilf(err, "error message %s", "formatted")

func (*Assertions) NotPanics

func (a *Assertions) NotPanics(f PanicTestFunc, msgAndArgs ...interface{}) bool

NotPanics asserts that the code inside the specified PanicTestFunc does NOT panic.

a.NotPanics(func(){ RemainCalm() })

func (*Assertions) NotPanicsf

func (a *Assertions) NotPanicsf(f PanicTestFunc, msg string, args ...interface{}) bool

NotPanicsf asserts that the code inside the specified PanicTestFunc does NOT panic.

a.NotPanicsf(func(){ RemainCalm() }, "error message %s", "formatted")

func (*Assertions) NotRegexp

func (a *Assertions) NotRegexp(rx interface{}, str interface{}, msgAndArgs ...interface{}) bool

NotRegexp asserts that a specified regexp does not match a string.

a.NotRegexp(regexp.MustCompile("starts"), "it's starting")
a.NotRegexp("^start", "it's not starting")

func (*Assertions) NotRegexpf

func (a *Assertions) NotRegexpf(rx interface{}, str interface{}, msg string, args ...interface{}) bool

NotRegexpf asserts that a specified regexp does not match a string.

a.NotRegexpf(regexp.MustCompile("starts", "error message %s", "formatted"), "it's starting")
a.NotRegexpf("^start", "it's not starting", "error message %s", "formatted")

func (*Assertions) NotSame

func (a *Assertions) NotSame(expected interface{}, actual interface{}, msgAndArgs ...interface{}) bool

NotSame asserts that two pointers do not reference the same object.

a.NotSame(ptr1, ptr2)

Both arguments must be pointer variables. Pointer variable sameness is determined based on the equality of both type and value.

func (*Assertions) NotSamef

func (a *Assertions) NotSamef(expected interface{}, actual interface{}, msg string, args ...interface{}) bool

NotSamef asserts that two pointers do not reference the same object.

a.NotSamef(ptr1, ptr2, "error message %s", "formatted")

Both arguments must be pointer variables. Pointer variable sameness is determined based on the equality of both type and value.

func (*Assertions) NotSubset

func (a *Assertions) NotSubset(list interface{}, subset interface{}, msgAndArgs ...interface{}) bool

NotSubset asserts that the specified list(array, slice...) contains not all elements given in the specified subset(array, slice...).

a.NotSubset([1, 3, 4], [1, 2], "But [1, 3, 4] does not contain [1, 2]")

func (*Assertions) NotSubsetf

func (a *Assertions) NotSubsetf(list interface{}, subset interface{}, msg string, args ...interface{}) bool

NotSubsetf asserts that the specified list(array, slice...) contains not all elements given in the specified subset(array, slice...).

a.NotSubsetf([1, 3, 4], [1, 2], "But [1, 3, 4] does not contain [1, 2]", "error message %s", "formatted")

func (*Assertions) NotZero

func (a *Assertions) NotZero(i interface{}, msgAndArgs ...interface{}) bool

NotZero asserts that i is not the zero value for its type.

func (*Assertions) NotZerof

func (a *Assertions) NotZerof(i interface{}, msg string, args ...interface{}) bool

NotZerof asserts that i is not the zero value for its type.

func (*Assertions) Panics

func (a *Assertions) Panics(f PanicTestFunc, msgAndArgs ...interface{}) bool

Panics asserts that the code inside the specified PanicTestFunc panics.

a.Panics(func(){ GoCrazy() })

func (*Assertions) PanicsWithError

func (a *Assertions) PanicsWithError(errString string, f PanicTestFunc, msgAndArgs ...interface{}) bool

PanicsWithError asserts that the code inside the specified PanicTestFunc panics, and that the recovered panic value is an error that satisfies the EqualError comparison.

a.PanicsWithError("crazy error", func(){ GoCrazy() })

func (*Assertions) PanicsWithErrorf

func (a *Assertions) PanicsWithErrorf(errString string, f PanicTestFunc, msg string, args ...interface{}) bool

PanicsWithErrorf asserts that the code inside the specified PanicTestFunc panics, and that the recovered panic value is an error that satisfies the EqualError comparison.

a.PanicsWithErrorf("crazy error", func(){ GoCrazy() }, "error message %s", "formatted")

func (*Assertions) PanicsWithValue

func (a *Assertions) PanicsWithValue(expected interface{}, f PanicTestFunc, msgAndArgs ...interface{}) bool

PanicsWithValue asserts that the code inside the specified PanicTestFunc panics, and that the recovered panic value equals the expected panic value.

a.PanicsWithValue("crazy error", func(){ GoCrazy() })

func (*Assertions) PanicsWithValuef

func (a *Assertions) PanicsWithValuef(expected interface{}, f PanicTestFunc, msg string, args ...interface{}) bool

PanicsWithValuef asserts that the code inside the specified PanicTestFunc panics, and that the recovered panic value equals the expected panic value.

a.PanicsWithValuef("crazy error", func(){ GoCrazy() }, "error message %s", "formatted")

func (*Assertions) Panicsf

func (a *Assertions) Panicsf(f PanicTestFunc, msg string, args ...interface{}) bool

Panicsf asserts that the code inside the specified PanicTestFunc panics.

a.Panicsf(func(){ GoCrazy() }, "error message %s", "formatted")

func (*Assertions) Regexp

func (a *Assertions) Regexp(rx interface{}, str interface{}, msgAndArgs ...interface{}) bool

Regexp asserts that a specified regexp matches a string.

a.Regexp(regexp.MustCompile("start"), "it's starting")
a.Regexp("start...$", "it's not starting")

func (*Assertions) Regexpf

func (a *Assertions) Regexpf(rx interface{}, str interface{}, msg string, args ...interface{}) bool

Regexpf asserts that a specified regexp matches a string.

a.Regexpf(regexp.MustCompile("start", "error message %s", "formatted"), "it's starting")
a.Regexpf("start...$", "it's not starting", "error message %s", "formatted")

func (*Assertions) Same

func (a *Assertions) Same(expected interface{}, actual interface{}, msgAndArgs ...interface{}) bool

Same asserts that two pointers reference the same object.

a.Same(ptr1, ptr2)

Both arguments must be pointer variables. Pointer variable sameness is determined based on the equality of both type and value.

func (*Assertions) Samef

func (a *Assertions) Samef(expected interface{}, actual interface{}, msg string, args ...interface{}) bool

Samef asserts that two pointers reference the same object.

a.Samef(ptr1, ptr2, "error message %s", "formatted")

Both arguments must be pointer variables. Pointer variable sameness is determined based on the equality of both type and value.

func (*Assertions) Subset

func (a *Assertions) Subset(list interface{}, subset interface{}, msgAndArgs ...interface{}) bool

Subset asserts that the specified list(array, slice...) contains all elements given in the specified subset(array, slice...).

a.Subset([1, 2, 3], [1, 2], "But [1, 2, 3] does contain [1, 2]")

func (*Assertions) Subsetf

func (a *Assertions) Subsetf(list interface{}, subset interface{}, msg string, args ...interface{}) bool

Subsetf asserts that the specified list(array, slice...) contains all elements given in the specified subset(array, slice...).

a.Subsetf([1, 2, 3], [1, 2], "But [1, 2, 3] does contain [1, 2]", "error message %s", "formatted")

func (*Assertions) True

func (a *Assertions) True(value bool, msgAndArgs ...interface{}) bool

True asserts that the specified value is true.

a.True(myBool)

func (*Assertions) Truef

func (a *Assertions) Truef(value bool, msg string, args ...interface{}) bool

Truef asserts that the specified value is true.

a.Truef(myBool, "error message %s", "formatted")

func (*Assertions) WithinDuration

func (a *Assertions) WithinDuration(expected time.Time, actual time.Time, delta time.Duration, msgAndArgs ...interface{}) bool

WithinDuration asserts that the two times are within duration delta of each other.

a.WithinDuration(time.Now(), time.Now(), 10*time.Second)

func (*Assertions) WithinDurationf

func (a *Assertions) WithinDurationf(expected time.Time, actual time.Time, delta time.Duration, msg string, args ...interface{}) bool

WithinDurationf asserts that the two times are within duration delta of each other.

a.WithinDurationf(time.Now(), time.Now(), 10*time.Second, "error message %s", "formatted")

func (*Assertions) YAMLEq

func (a *Assertions) YAMLEq(expected string, actual string, msgAndArgs ...interface{}) bool

YAMLEq asserts that two YAML strings are equivalent.

func (*Assertions) YAMLEqf

func (a *Assertions) YAMLEqf(expected string, actual string, msg string, args ...interface{}) bool

YAMLEqf asserts that two YAML strings are equivalent.

func (*Assertions) Zero

func (a *Assertions) Zero(i interface{}, msgAndArgs ...interface{}) bool

Zero asserts that i is the zero value for its type.

func (*Assertions) Zerof

func (a *Assertions) Zerof(i interface{}, msg string, args ...interface{}) bool

Zerof asserts that i is the zero value for its type.

type BoolAssertionFunc

type BoolAssertionFunc func(TestingT, bool, ...interface{}) bool

BoolAssertionFunc is a common function prototype when validating a bool value. Can be useful for table driven tests.

Example

Code:

t := &testing.T{} // provided by test

isOkay := func(x int) bool {
	return x >= 42
}

tests := []struct {
	name      string
	arg       int
	assertion BoolAssertionFunc
}{
	{"-1 is bad", -1, False},
	{"42 is good", 42, True},
	{"41 is bad", 41, False},
	{"45 is cool", 45, True},
}

for _, tt := range tests {
	t.Run(tt.name, func(t *testing.T) {
		tt.assertion(t, isOkay(tt.arg))
	})
}

type Comparison

type Comparison func() (success bool)

Comparison a custom function that returns true on success and false on failure

type ComparisonAssertionFunc

type ComparisonAssertionFunc func(TestingT, interface{}, interface{}, ...interface{}) bool

ComparisonAssertionFunc is a common function prototype when comparing two values. Can be useful for table driven tests.

Example

Code:

t := &testing.T{} // provided by test

adder := func(x, y int) int {
	return x + y
}

type args struct {
	x int
	y int
}

tests := []struct {
	name      string
	args      args
	expect    int
	assertion ComparisonAssertionFunc
}{
	{"2+2=4", args{2, 2}, 4, Equal},
	{"2+2!=5", args{2, 2}, 5, NotEqual},
	{"2+3==5", args{2, 3}, 5, Exactly},
}

for _, tt := range tests {
	t.Run(tt.name, func(t *testing.T) {
		tt.assertion(t, tt.expect, adder(tt.args.x, tt.args.y))
	})
}

type ErrorAssertionFunc

type ErrorAssertionFunc func(TestingT, error, ...interface{}) bool

ErrorAssertionFunc is a common function prototype when validating an error value. Can be useful for table driven tests.

Example

Code:

t := &testing.T{} // provided by test

dumbParseNum := func(input string, v interface{}) error {
	return json.Unmarshal([]byte(input), v)
}

tests := []struct {
	name      string
	arg       string
	assertion ErrorAssertionFunc
}{
	{"1.2 is number", "1.2", NoError},
	{"1.2.3 not number", "1.2.3", Error},
	{"true is not number", "true", Error},
	{"3 is number", "3", NoError},
}

for _, tt := range tests {
	t.Run(tt.name, func(t *testing.T) {
		var x float64
		tt.assertion(t, dumbParseNum(tt.arg, &x))
	})
}

type PanicTestFunc

type PanicTestFunc func()

PanicTestFunc defines a func that should be passed to the assert.Panics and assert.NotPanics methods, and represents a simple func that takes no arguments, and returns nothing.

type TestingT

type TestingT interface {
	Errorf(format string, args ...interface{})
}

TestingT is an interface wrapper around *testing.T

type ValueAssertionFunc

type ValueAssertionFunc func(TestingT, interface{}, ...interface{}) bool

ValueAssertionFunc is a common function prototype when validating a single value. Can be useful for table driven tests.

Example

Code:

t := &testing.T{} // provided by test

dumbParse := func(input string) interface{} {
	var x interface{}
	json.Unmarshal([]byte(input), &x)
	return x
}

tests := []struct {
	name      string
	arg       string
	assertion ValueAssertionFunc
}{
	{"true is not nil", "true", NotNil},
	{"empty string is nil", "", Nil},
	{"zero is not nil", "0", NotNil},
	{"zero is zero", "0", Zero},
	{"false is zero", "false", Zero},
}

for _, tt := range tests {
	t.Run(tt.name, func(t *testing.T) {
		tt.assertion(t, dumbParse(tt.arg))
	})
}
Documentation was rendered with GOOS=linux and GOARCH=amd64.

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