apitest

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 Go to latest Published: Feb 20, 2019 License: MIT Imports: 24 Imported by: 16

README

apitest

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A simple and extensible behavioural testing library in golang. Supports mocking external http calls and renders sequence diagrams on completion.

In behavioural tests the internal structure of the app is not known by the tests. Data is input to the system and the outputs are expected to meet certain conditions.

Installation

go get -u github.com/steinfletcher/apitest

Examples

Framework and library integration examples
Example Comment
gin popular martini-like web framework
gorilla the gorilla web toolkit
iris iris web framework
echo High performance, extensible, minimalist Go web framework
mocks example mocking out external http calls
sequence diagrams generate sequence diagrams from tests. See the demo
Companion libraries
Library Comment
JSONPath JSONPath assertion addons
Code snippets
JSON body matcher
func TestApi(t *testing.T) {
	apitest.New().
		Handler(handler).
		Get("/user/1234").
		Expect(t).
		Body(`{"id": "1234", "name": "Tate"}`).
		Status(http.StatusCreated).
		End()
}
JSONPath

For asserting on parts of the response body JSONPath may be used. A separate module must be installed which provides these assertions - go get -u github.com/steinfletcher/apitest-jsonpath. This is packaged separately to keep this library dependency free.

Given the response is {"a": 12345, "b": [{"key": "c", "value": "result"}]}

func TestApi(t *testing.T) {
	apitest.New().
		Handler(handler).
		Get("/hello").
		Expect(t).
		Assert(jsonpath.Contains(`$.b[? @.key=="c"].value`, "result")).
		End()
}

and jsonpath.Equals checks for value equality

func TestApi(t *testing.T) {
	apitest.New(handler).
		Get("/hello").
		Expect(t).
		Assert(jsonpath.Equal(`$.a`, float64(12345))).
		End()
}
Custom assert functions
func TestApi(t *testing.T) {
	apitest.New().
		Handler(handler).
		Get("/hello").
		Expect(t).
		Assert(func(res *http.Response, req *http.Request) {
			assert.Equal(t, http.StatusOK, res.StatusCode)
		}).
		End()
}
Assert cookies
func TestApi(t *testing.T) {
	apitest.New().
		Handler(handler).
		Patch("/hello").
		Expect(t).
		Status(http.StatusOK).
		Cookies(apitest.Cookie"ABC").Value("12345")).
		CookiePresent("Session-Token").
		CookieNotPresent("XXX").
			Cookies(
			apitest.Cookie("ABC").Value("12345"),
			apitest.Cookie("DEF").Value("67890"),
		).
		End()
}
Assert headers
func TestApi(t *testing.T) {
	apitest.New().
		Handler(handler).
		Get("/hello").
		Expect(t).
		Status(http.StatusOK).
		Headers(map[string]string{"ABC": "12345"}).
		End()
}
Mocking external http calls
var getUser = apitest.NewMock().
	Get("/user/12345").
	RespondWith().
	Body(`{"name": "jon", "id": "1234"}`).
	Status(http.StatusOK).
	End()

var getPreferences = apitest.NewMock().
	Get("/preferences/12345").
	RespondWith().
	Body(`{"is_contactable": true}`).
	Status(http.StatusOK).
	End()

func TestApi(t *testing.T) {
	apitest.New().
		Mocks(getUser, getPreferences).
		Handler(handler).
		Get("/hello").
		Expect(t).
		Status(http.StatusOK).
		Body(`{"name": "jon", "id": "1234"}`).
		End()
}
Generating sequence diagrams from tests

func TestApi(t *testing.T) {
	apitest.New().
		Report(apitest.SequenceDiagram()).
		Mocks(getUser, getPreferences).
		Handler(handler).
		Get("/hello").
		Expect(t).
		Status(http.StatusOK).
		Body(`{"name": "jon", "id": "1234"}`).
		End()
}

It is possible to override the default storage location by passing the formatter instance Report(apitest.NewSequenceDiagramFormatter(".sequence-diagrams")). You can bring your own formatter too if you want to produce custom output. By default a sequence diagram is rendered on a html page. See the demo

Debugging http requests and responses generated by api test and any mocks
func TestApi(t *testing.T) {
	apitest.New().
		Debug().
		Handler(handler).
		Get("/hello").
		Expect(t).
		Status(http.StatusOK).
		End()
}
Provide basic auth in the request
func TestApi(t *testing.T) {
	apitest.New().
		Handler(handler).
		Get("/hello").
		BasicAuth("username:password").
		Expect(t).
		Status(http.StatusOK).
		End()
}
Provide cookies in the request
func TestApi(t *testing.T) {
	apitest.New().
		Handler(handler).
		Get("/hello").
		Cookies(apitest.Cookie("ABC").Value("12345")).
		Expect(t).
		Status(http.StatusOK).
		End()
}
Provide headers in the request
func TestApi(t *testing.T) {
	apitest.New().
		Handler(handler).
		Delete("/hello").
		Headers(map[string]string{"My-Header": "12345"}).
		Expect(t).
		Status(http.StatusOK).
		End()
}
Provide query parameters in the request

Query, QueryParams and QueryCollection can all be used in combination

func TestApi(t *testing.T) {
	apitest.New().
		Handler(handler).
		Get("/hello").
		QueryParams(map[string]string{"a": "1", "b": "2"}).
		Query("c", "d").
		Expect(t).
		Status(http.StatusOK).
		End()
}

Providing {"a": {"b", "c", "d"} results in parameters encoded as a=b&a=c&a=d. QueryCollection can be used in combination with Query

func TestApi(t *testing.T) {
	apitest.New().
		Handler(handler).
		Get("/hello").
		QueryCollection(map[string][]string{"a": {"b", "c", "d"}}).
		Expect(t).
		Status(http.StatusOK).
		End()
}
Capture the request and response data
func TestApi(t *testing.T) {
	apitest.New().
		Observe(func(res *http.Response, req *http.Request, apiTest *apitest.APITest) {
			// do something with res and req
		}).
		Handler(handler).
		Get("/hello").
		Expect(t).
		Status(http.StatusOK).
		End()
}
Intercept the request

This is useful for mutating the request before it is sent to the system under test.

func TestApi(t *testing.T) {
	apitest.New().
		Handler(handler).
		Intercept(func(req *http.Request) {
			req.URL.RawQuery = "a[]=xxx&a[]=yyy"
		}).
		Get("/hello").
		Expect(t).
		Status(http.StatusOK).
		End()
}

Contributing

View the contributing guide.

Documentation

Index

Constants

View Source 
const Template = `` /* 2256-byte string literal not displayed */

Variables

This section is empty.

Functions

This section is empty.

Types

type APITest 

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

APITest is the top level struct holding the test spec

func New 

func New(name ...string) *APITest

New creates a new api test. The name is optional and will appear in test reports

func (*APITest) BuildRequest 

func (a *APITest) BuildRequest() *http.Request

func (*APITest) Debug 

func (a *APITest) Debug() *APITest

Debug logs to the console the http wire representation of all http interactions that are intercepted by apitest. This includes the inbound request to the application under test, the response returned by the application and any interactions that are intercepted by the mock server.

func (*APITest) Delete added in v1.0.3 

func (a *APITest) Delete(url string) *Request

Delete is a convenience method for setting the request as http.MethodDelete

func (*APITest) Get added in v1.0.3 

func (a *APITest) Get(url string) *Request

Get is a convenience method for setting the request as http.MethodGet

func (*APITest) Handler 

func (a *APITest) Handler(handler http.Handler) *APITest

Handler defines the http handler that is invoked when the test is run

func (*APITest) HttpClient 

func (a *APITest) HttpClient(cli *http.Client) *APITest

HttpClient allows the developer to provide a custom http client when using mocks

func (*APITest) Intercept added in v1.0.3 

func (a *APITest) Intercept(interceptor Intercept) *APITest

Intercept is a builder method for setting the request interceptor

func (*APITest) Meta added in v1.0.2 

func (a *APITest) Meta(meta map[string]interface{}) *APITest

Meta provides a hook to add custom meta data to the test which can be picked up when defining a custom reporter

func (*APITest) Method added in v1.0.3 

func (a *APITest) Method(method string) *Request

Method is a builder method for setting the http method of the request

func (*APITest) Mocks 

func (a *APITest) Mocks(mocks ...*Mock) *APITest

Mocks is a builder method for setting the mocks

func (*APITest) Observe 

func (a *APITest) Observe(observers ...Observe) *APITest

Observe is a builder method for setting the observers

func (*APITest) ObserveMocks 

func (a *APITest) ObserveMocks(observer Observe) *APITest

ObserveMocks is a builder method for setting the mocks observers

func (*APITest) Patch added in v1.0.3 

func (a *APITest) Patch(url string) *Request

Patch is a convenience method for setting the request as http.MethodPatch

func (*APITest) Post added in v1.0.3 

func (a *APITest) Post(url string) *Request

Post is a convenience method for setting the request as http.MethodPost

func (*APITest) Put added in v1.0.3 

func (a *APITest) Put(url string) *Request

Put is a convenience method for setting the request as http.MethodPut

func (*APITest) RecorderHook 

func (a *APITest) RecorderHook(hook RecorderHook) *APITest

RecorderHook allows the consumer to provider a function that will receive the recorder instance before the test runs. This can be used to inject custom events which can then be rendered in diagrams

func (*APITest) Report added in v1.0.2 

func (a *APITest) Report(reporter ReportFormatter) *APITest

Reporter provides a hook to add custom formatting to the output of the test

func (*APITest) Request 

func (a *APITest) Request() *Request

Request returns the request spec

func (*APITest) Response 

func (a *APITest) Response() *Response

Response returns the expected response

type Assert 

type Assert func(*http.Response, *http.Request) error

Assert is a user defined custom assertion function 

var IsClientError Assert = func(response *http.Response, request *http.Request) error {
	if response.StatusCode >= 400 && response.StatusCode < 500 {
		return nil
	}
	return errors.New("not a client error. Status code=" + strconv.Itoa(response.StatusCode))
}

IsClientError is a convenience function to assert on a range of client error status codes 

var IsServerError Assert = func(response *http.Response, request *http.Request) error {
	if response.StatusCode >= 500 {
		return nil
	}
	return errors.New("not a server error. Status code=" + strconv.Itoa(response.StatusCode))
}

IsServerError is a convenience function to assert on a range of server error status codes 

var IsSuccess Assert = func(response *http.Response, request *http.Request) error {
	if response.StatusCode >= 200 && response.StatusCode < 400 {
		return nil
	}
	return errors.New("not a client error. Status code=" + strconv.Itoa(response.StatusCode))
}

IsSuccess is a convenience function to assert on a range of happy path status codes 

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

func NewCookie 

func NewCookie(name string) *Cookie

func (*Cookie) Domain 

func (cookie *Cookie) Domain(domain string) *Cookie

func (*Cookie) Expires 

func (cookie *Cookie) Expires(expires time.Time) *Cookie

func (*Cookie) HttpOnly 

func (cookie *Cookie) HttpOnly(httpOnly bool) *Cookie

func (*Cookie) MaxAge 

func (cookie *Cookie) MaxAge(maxAge int) *Cookie

func (*Cookie) Path 

func (cookie *Cookie) Path(path string) *Cookie

func (*Cookie) Secure 

func (cookie *Cookie) Secure(secure bool) *Cookie

func (*Cookie) ToHttpCookie 

func (cookie *Cookie) ToHttpCookie() *http.Cookie

func (*Cookie) Value 

func (cookie *Cookie) Value(value string) *Cookie

type Event 

type Event interface {
	GetTime() time.Time
}

type FinalResponse 

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

type HTMLTemplateModel 

type HTMLTemplateModel struct {
	Title          string
	SubTitle       string
	StatusCode     int
	BadgeClass     string
	LogEntries     []LogEntry
	WebSequenceDSL string
	MetaJSON       template.JS
}

func NewHTMLTemplateModel 

func NewHTMLTemplateModel(r *Recorder) (HTMLTemplateModel, error)

type HttpRequest 

type HttpRequest struct {
	Source    string
	Target    string
	Value     *http.Request
	Timestamp time.Time
}

func (HttpRequest) GetTime 

func (r HttpRequest) GetTime() time.Time

type HttpResponse 

type HttpResponse struct {
	Source    string
	Target    string
	Value     *http.Response
	Timestamp time.Time
}

func (HttpResponse) GetTime 

func (r HttpResponse) GetTime() time.Time

type InboundRequest 

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

type Intercept 

type Intercept func(*http.Request)

Intercept will be called before the request is made. Updates to the request will be reflected in the test

type LogEntry 

type LogEntry struct {
	Header    string
	Body      string
	Timestamp time.Time
}

func NewHttpRequestLogEntry added in v1.0.6 

func NewHttpRequestLogEntry(req *http.Request) (LogEntry, error)

func NewHttpResponseLogEntry added in v1.0.6 

func NewHttpResponseLogEntry(res *http.Response) (LogEntry, error)

type Matcher 

type Matcher func(*http.Request, *MockRequest) error

Matcher type accepts the actual request and a mock request to match against. Will return an error that describes why there was a mismatch if the inputs do not match or nil if they do.

type MessageRequest 

type MessageRequest struct {
	Source    string
	Target    string
	Header    string
	Body      string
	Timestamp time.Time
}

func (MessageRequest) GetTime 

func (r MessageRequest) GetTime() time.Time

type MessageResponse 

type MessageResponse struct {
	Source    string
	Target    string
	Header    string
	Body      string
	Timestamp time.Time
}

func (MessageResponse) GetTime 

func (r MessageResponse) GetTime() time.Time

type Mock 

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

func NewMock 

func NewMock() *Mock

func (*Mock) Delete 

func (m *Mock) Delete(u string) *MockRequest

func (*Mock) Get 

func (m *Mock) Get(u string) *MockRequest

func (*Mock) Method 

func (m *Mock) Method(method string) *MockRequest

func (*Mock) Patch 

func (m *Mock) Patch(u string) *MockRequest

func (*Mock) Post 

func (m *Mock) Post(u string) *MockRequest

func (*Mock) Put 

func (m *Mock) Put(u string) *MockRequest

type MockRequest 

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

func (*MockRequest) Body 

func (r *MockRequest) Body(b string) *MockRequest

func (*MockRequest) Header 

func (r *MockRequest) Header(key, value string) *MockRequest

func (*MockRequest) Headers 

func (r *MockRequest) Headers(headers map[string]string) *MockRequest

func (*MockRequest) Query 

func (r *MockRequest) Query(key, value string) *MockRequest

func (*MockRequest) QueryParams 

func (r *MockRequest) QueryParams(queryParams map[string]string) *MockRequest

func (*MockRequest) QueryPresent 

func (r *MockRequest) QueryPresent(key string) *MockRequest

func (*MockRequest) RespondWith 

func (r *MockRequest) RespondWith() *MockResponse

type MockResponse 

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

func (*MockResponse) Body 

func (r *MockResponse) Body(body string) *MockResponse

func (*MockResponse) Cookie 

func (r *MockResponse) Cookie(name, value string) *MockResponse

func (*MockResponse) Cookies 

func (r *MockResponse) Cookies(cookie ...*Cookie) *MockResponse

func (*MockResponse) End 

func (r *MockResponse) End() *Mock

func (*MockResponse) Header 

func (r *MockResponse) Header(key string, value string) *MockResponse

func (*MockResponse) Headers 

func (r *MockResponse) Headers(headers map[string]string) *MockResponse

func (*MockResponse) Status 

func (r *MockResponse) Status(statusCode int) *MockResponse

func (*MockResponse) Times 

func (r *MockResponse) Times(times int) *MockResponse

type Observe 

type Observe func(*http.Response, *http.Request, *APITest)

Observe will be called by with the request and response on completion

type Recorder 

type Recorder struct {
	Title    string
	SubTitle string
	Meta     map[string]interface{}
	Events   []Event
}

func NewTestRecorder 

func NewTestRecorder() *Recorder

func (*Recorder) AddHttpRequest 

func (r *Recorder) AddHttpRequest(req HttpRequest) *Recorder

func (*Recorder) AddHttpResponse 

func (r *Recorder) AddHttpResponse(req HttpResponse) *Recorder

func (*Recorder) AddMessageRequest 

func (r *Recorder) AddMessageRequest(m MessageRequest) *Recorder

func (*Recorder) AddMessageResponse 

func (r *Recorder) AddMessageResponse(m MessageResponse) *Recorder

func (*Recorder) AddMeta 

func (r *Recorder) AddMeta(meta map[string]interface{}) *Recorder

func (*Recorder) AddSubTitle 

func (r *Recorder) AddSubTitle(subTitle string) *Recorder

func (*Recorder) AddTitle 

func (r *Recorder) AddTitle(title string) *Recorder

func (*Recorder) ResponseStatus 

func (r *Recorder) ResponseStatus() (int, error)

type RecorderHook 

type RecorderHook func(*Recorder)

type ReportFormatter 

type ReportFormatter interface {
	Format(*Recorder)
}

type Request 

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

Request is the user defined request that will be invoked on the handler under test

func (*Request) BasicAuth 

func (r *Request) BasicAuth(auth string) *Request

BasicAuth is a builder method to sets basic auth on the request. The credentials should be provided delimited by a colon, e.g. "username:password"

func (*Request) Body 

func (r *Request) Body(b string) *Request

Body is a builder method to set the request body

func (*Request) Cookie 

func (r *Request) Cookie(name, value string) *Request

Cookie is a convenience method for setting a single request cookies by name and value

func (*Request) Cookies 

func (r *Request) Cookies(c ...*Cookie) *Request

Cookies is a builder method to set the request cookies

func (*Request) Expect 

func (r *Request) Expect(t *testing.T) *Response

Expect marks the request spec as complete and following code will define the expected response

func (*Request) Header 

func (r *Request) Header(key, value string) *Request

Header is a builder method to set the request headers

func (*Request) Headers 

func (r *Request) Headers(headers map[string]string) *Request

Headers is a builder method to set the request headers

func (*Request) JSON 

func (r *Request) JSON(b string) *Request

JSON is a convenience method for setting the request body and content type header as "application/json"

func (*Request) Query 

func (r *Request) Query(key, value string) *Request

Query is a convenience method to add a query parameter to the request.

func (*Request) QueryCollection 

func (r *Request) QueryCollection(q map[string][]string) *Request

QueryCollection is a builder method to set the request query parameters This can be used in combination with request.Query

func (*Request) QueryParams 

func (r *Request) QueryParams(params map[string]string) *Request

QueryParams is a builder method to set the request query parameters. This can be used in combination with request.QueryCollection

func (*Request) URL 

func (r *Request) URL(url string) *Request

URL is a builder method for setting the url of the request

type Response 

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

Response is the user defined expected response from the application under test

func (*Response) Assert 

func (r *Response) Assert(fn func(*http.Response, *http.Request) error) *Response

Assert allows the consumer to provide a user defined function containing their own custom assertions

func (*Response) Body 

func (r *Response) Body(b string) *Response

Body is the expected response body

func (*Response) CookieNotPresent 

func (r *Response) CookieNotPresent(cookieName string) *Response

CookieNotPresent is used to assert that a cookie is not present in the response

func (*Response) CookiePresent 

func (r *Response) CookiePresent(cookieName string) *Response

CookiePresent is used to assert that a cookie is present in the response, regardless of its value

func (*Response) Cookies 

func (r *Response) Cookies(cookies ...*Cookie) *Response

Cookies is the expected response cookies

func (*Response) End 

func (r *Response) End()

End runs the test and all defined assertions

func (*Response) Header 

func (r *Response) Header(key, value string) *Response

Header is a builder method to set the request headers

func (*Response) Headers 

func (r *Response) Headers(headers map[string]string) *Response

Headers is a builder method to set the request headers

func (*Response) Status 

func (r *Response) Status(s int) *Response

Status is the expected response http status code

type SequenceDiagramFormatter 

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

func SequenceDiagram added in v1.0.2 

func SequenceDiagram(path ...string) *SequenceDiagramFormatter

func (*SequenceDiagramFormatter) Format 

func (r *SequenceDiagramFormatter) Format(recorder *Recorder)

type Transport 

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

func (*Transport) Hijack 

func (r *Transport) Hijack()

func (*Transport) Reset 

func (r *Transport) Reset()

func (*Transport) RoundTrip 

func (r *Transport) RoundTrip(req *http.Request) (mockResponse *http.Response, matchErrors error)

RoundTrip implementation intended to match a given expected mock request or throw an error with a list of reasons why no match was found.

type WebSequenceDiagramDSL 

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

func (*WebSequenceDiagramDSL) AddRequestRow 

func (r *WebSequenceDiagramDSL) AddRequestRow(source string, target string, description string)

func (*WebSequenceDiagramDSL) AddResponseRow 

func (r *WebSequenceDiagramDSL) AddResponseRow(source string, target string, description string)

func (*WebSequenceDiagramDSL) ToString 

func (r *WebSequenceDiagramDSL) ToString() string

Source Files

View all Source files

Directories

Path Synopsis
examples module

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