tdhttp

package
v1.9.2 Latest Latest
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 Go to latest Published: Mar 18, 2021 License: BSD-2-Clause Imports: 21 Imported by: 0

Documentation

Overview

Package tdhttp provides some functions to easily test HTTP handlers.

Combined to td package (https://pkg.go.dev/github.com/maxatome/go-testdeep/td) it provides powerful testing features.

TestAPI

The better way to test HTTP APIs using this package. 

ta := tdhttp.NewTestAPI(t, mux)

ta.Get("/person/42", "Accept", "application/xml").
  CmpStatus(http.StatusOK).
  CmpHeader(td.ContainsKey("X-Custom-Header")).
  CmpXMLBody(Person{
    ID:   ta.Anchor(td.NotZero(), uint64(0)).(uint64),
    Name: "Bob",
    Age:  26,
  })

ta.Get("/person/42", "Accept", "application/json").
  CmpStatus(http.StatusOK).
  CmpHeader(td.ContainsKey("X-Custom-Header")).
  CmpJSONBody(td.JSON(`
{
  "id":   $1,
  "name": "Bob",
  "age":  26
}`,
    td.NotZero()))

See the full example below.

Cmp…Response functions

Historically, it was the only way to test HTTP APIs using this package. 

ok := tdhttp.CmpJSONResponse(t,
  tdhttp.Get("/person/42"),
  myAPI.ServeHTTP,
  Response{
    Status: http.StatusOK,
    Header: td.ContainsKey("X-Custom-Header"),
    Body:   Person{
      ID:   42,
      Name: "Bob",
      Age:  26,
    },
  },
  "/person/{id} route")

It now uses TestAPI behind the scene. It is better to directly use TestAPI and its methods instead, as it is more flexible and readable.

Example 
package main

import (
	"encoding/json"
	"encoding/xml"
	"fmt"
	"io/ioutil"
	"net/http"
	"net/url"
	"strconv"
	"strings"
	"sync"
	"testing"
	"time"

	"github.com/maxatome/go-testdeep/helpers/tdhttp"
	"github.com/maxatome/go-testdeep/td"
)

func main() {
	t := &testing.T{}

	// Our API handle Persons with 3 routes:
	// - POST /person
	// - GET /person/{personID}
	// - DELETE /person/{personID}

	// Person describes a person.
	type Person struct {
		ID        int64      `json:"id,omitempty" xml:"ID,omitempty"`
		Name      string     `json:"name" xml:"Name"`
		Age       int        `json:"age" xml:"Age"`
		CreatedAt *time.Time `json:"created_at,omitempty" xml:"CreatedAt,omitempty"`
	}

	// Error is returned to the client in case of error.
	type Error struct {
		Mesg string `json:"message" xml:"Message"`
		Code int    `json:"code" xml:"Code"`
	}

	// Our µDB :)
	var mu sync.Mutex
	personByID := map[int64]*Person{}
	personByName := map[string]*Person{}
	var lastID int64

	// reply is a helper to send responses.
	reply := func(w http.ResponseWriter, status int, contentType string, body interface{}) {
		if body == nil {
			w.WriteHeader(status)
			return
		}

		w.Header().Set("Content-Type", contentType)
		w.WriteHeader(status)
		switch contentType {
		case "application/json":
			json.NewEncoder(w).Encode(body) //nolint: errcheck
		case "application/xml":
			xml.NewEncoder(w).Encode(body) //nolint: errcheck
		default: // text/plain
			fmt.Fprintf(w, "%+v", body)
		}
	}

	// Our API
	mux := http.NewServeMux()

	// POST /person
	mux.HandleFunc("/person", func(w http.ResponseWriter, req *http.Request) {
		if req.Method != http.MethodPost {
			http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
			return
		}

		if req.Body == nil {
			http.Error(w, "Bad request", http.StatusBadRequest)
			return
		}
		defer req.Body.Close()

		var in Person
		var contentType string

		switch req.Header.Get("Content-Type") {
		case "application/json":
			err := json.NewDecoder(req.Body).Decode(&in)
			if err != nil {
				http.Error(w, "Bad request", http.StatusBadRequest)
				return
			}
		case "application/xml":
			err := xml.NewDecoder(req.Body).Decode(&in)
			if err != nil {
				http.Error(w, "Bad request", http.StatusBadRequest)
				return
			}
		case "application/x-www-form-urlencoded":
			b, err := ioutil.ReadAll(req.Body)
			if err != nil {
				http.Error(w, "Bad request", http.StatusBadRequest)
				return
			}
			v, err := url.ParseQuery(string(b))
			if err != nil {
				http.Error(w, "Bad request", http.StatusBadRequest)
				return
			}
			in.Name = v.Get("name")
			in.Age, err = strconv.Atoi(v.Get("age"))
			if err != nil {
				http.Error(w, "Bad request", http.StatusBadRequest)
				return
			}
		default:
			http.Error(w, "Unsupported media type", http.StatusUnsupportedMediaType)
			return
		}

		contentType = req.Header.Get("Accept")

		if in.Name == "" || in.Age <= 0 {
			reply(w, http.StatusBadRequest, contentType, Error{
				Mesg: "Empty name or bad age",
				Code: http.StatusBadRequest,
			})
			return
		}

		mu.Lock()
		defer mu.Unlock()
		if personByName[in.Name] != nil {
			reply(w, http.StatusConflict, contentType, Error{
				Mesg: "Person already exists",
				Code: http.StatusConflict,
			})
			return
		}
		lastID++
		in.ID = lastID
		now := time.Now()
		in.CreatedAt = &now
		personByID[in.ID] = &in
		personByName[in.Name] = &in
		reply(w, http.StatusCreated, contentType, in)
	})

	// GET /person/{id}
	// DELETE /person/{id}
	mux.HandleFunc("/person/", func(w http.ResponseWriter, req *http.Request) {
		id, err := strconv.ParseInt(strings.TrimPrefix(req.URL.Path, "/person/"), 10, 64)
		if err != nil {
			http.Error(w, "Bad request", http.StatusBadRequest)
			return
		}

		accept := req.Header.Get("Accept")

		mu.Lock()
		defer mu.Unlock()
		if personByID[id] == nil {
			reply(w, http.StatusNotFound, accept, Error{
				Mesg: "Person does not exist",
				Code: http.StatusNotFound,
			})
			return
		}

		switch req.Method {
		case http.MethodGet:
			reply(w, http.StatusOK, accept, personByID[id])
		case http.MethodDelete:
			delete(personByID, id)
			reply(w, http.StatusNoContent, "", nil)
		default:
			http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
		}
	})

	//
	// Let's test our API
	//
	ta := tdhttp.NewTestAPI(t, mux)

	// Re-usable custom operator to check Content-Type header
	contentTypeIs := func(ct string) td.TestDeep {
		return td.SuperMapOf(http.Header{"Content-Type": []string{ct}}, nil)
	}

	//
	// Person not found
	//
	ta.Get("/person/42", "Accept", "application/json").
		Name("GET /person/42 - JSON").
		CmpStatus(404).
		CmpHeader(contentTypeIs("application/json")).
		CmpJSONBody(Error{
			Mesg: "Person does not exist",
			Code: 404,
		})
	fmt.Println("GET /person/42 - JSON:", !ta.Failed())

	ta.Get("/person/42", "Accept", "application/xml").
		Name("GET /person/42 - XML").
		CmpStatus(404).
		CmpHeader(contentTypeIs("application/xml")).
		CmpXMLBody(Error{
			Mesg: "Person does not exist",
			Code: 404,
		})
	fmt.Println("GET /person/42 - XML:", !ta.Failed())

	ta.Get("/person/42", "Accept", "text/plain").
		Name("GET /person/42 - raw").
		CmpStatus(404).
		CmpHeader(contentTypeIs("text/plain")).
		CmpBody("{Mesg:Person does not exist Code:404}")
	fmt.Println("GET /person/42 - raw:", !ta.Failed())

	//
	// Create a Person
	//
	var bobID int64
	ta.PostXML("/person", Person{Name: "Bob", Age: 32},
		"Accept", "application/xml").
		Name("POST /person - XML").
		CmpStatus(201).
		CmpHeader(contentTypeIs("application/xml")).
		CmpXMLBody(Person{ // using operator anchoring directly in litteral
			ID:        ta.A(td.Catch(&bobID, td.NotZero()), int64(0)).(int64),
			Name:      "Bob",
			Age:       32,
			CreatedAt: ta.A(td.Ptr(td.Between(ta.SentAt(), time.Now()))).(*time.Time),
		})
	fmt.Printf("POST /person - XML: %t → Bob ID=%d\n", !ta.Failed(), bobID)

	var aliceID int64
	ta.PostJSON("/person", Person{Name: "Alice", Age: 35},
		"Accept", "application/json").
		Name("POST /person - JSON").
		CmpStatus(201).
		CmpHeader(contentTypeIs("application/json")).
		CmpJSONBody(td.JSON(` // using JSON operator (yes comment allowed in JSON!)
{
  "id":         $1,
  "name":       "Alice",
  "age":        35,
  "created_at": $2
}`,
			td.Catch(&aliceID, td.NotZero()),
			td.Smuggle(func(date string) (time.Time, error) {
				return time.Parse(time.RFC3339Nano, date)
			}, td.Between(ta.SentAt(), time.Now()))))
	fmt.Printf("POST /person - JSON: %t → Alice ID=%d\n", !ta.Failed(), aliceID)

	var brittID int64
	ta.PostForm("/person",
		url.Values{
			"name": []string{"Britt"},
			"age":  []string{"29"},
		},
		"Accept", "text/plain").
		Name("POST /person - raw").
		CmpStatus(201).
		CmpHeader(contentTypeIs("text/plain")).
		// using Re (= Regexp) operator
		CmpBody(td.Re(`\{ID:(\d+) Name:Britt Age:29 CreatedAt:.*\}\z`,
			td.Smuggle(func(groups []string) (int64, error) {
				return strconv.ParseInt(groups[0], 10, 64)
			}, td.Catch(&brittID, td.NotZero()))))
	fmt.Printf("POST /person - raw: %t → Britt ID=%d\n", !ta.Failed(), brittID)

	//
	// Get a Person
	//
	ta.Get(fmt.Sprintf("/person/%d", aliceID), "Accept", "application/xml").
		Name("GET Alice - XML (ID #%d)", aliceID).
		CmpStatus(200).
		CmpHeader(contentTypeIs("application/xml")).
		CmpXMLBody(td.SStruct( // using SStruct operator
			Person{
				ID:   aliceID,
				Name: "Alice",
				Age:  35,
			},
			td.StructFields{
				"CreatedAt": td.Ptr(td.NotZero()),
			},
		))
	fmt.Println("GET XML Alice:", !ta.Failed())

	ta.Get(fmt.Sprintf("/person/%d", aliceID), "Accept", "application/json").
		Name("GET Alice - JSON (ID #%d)", aliceID).
		CmpStatus(200).
		CmpHeader(contentTypeIs("application/json")).
		CmpJSONBody(td.JSON(` // using JSON operator (yes comment allowed in JSON!)
{
  "id":         $1,
  "name":       "Alice",
  "age":        35,
  "created_at": $2
}`,
			aliceID,
			td.Not(td.Re(`^0001-01-01`)), // time is not 0001-01-01… aka zero time.Time
		))
	fmt.Println("GET JSON Alice:", !ta.Failed())

	//
	// Delete a Person
	//
	ta.Delete(fmt.Sprintf("/person/%d", aliceID), nil).
		Name("DELETE Alice (ID #%d)", aliceID).
		CmpStatus(204).
		CmpHeader(td.Not(td.ContainsKey("Content-Type"))).
		NoBody()
	fmt.Println("DELETE Alice:", !ta.Failed())

	// Check Alice is deleted
	ta.Get(fmt.Sprintf("/person/%d", aliceID), "Accept", "application/json").
		Name("GET (deleted) Alice - JSON (ID #%d)", aliceID).
		CmpStatus(404).
		CmpHeader(contentTypeIs("application/json")).
		CmpJSONBody(td.JSON(`
{
  "message": "Person does not exist",
  "code":    404
}`))
	fmt.Println("Alice is not found anymore:", !ta.Failed())

}

Output:

GET /person/42 - JSON: true
GET /person/42 - XML: true
GET /person/42 - raw: true
POST /person - XML: true → Bob ID=1
POST /person - JSON: true → Alice ID=2
POST /person - raw: true → Britt ID=3
GET XML Alice: true
GET JSON Alice: true
DELETE Alice: true
Alice is not found anymore: true

Index

Examples

Constants

This section is empty.

Variables

This section is empty.

Functions

func CmpJSONResponse 

func CmpJSONResponse(t testing.TB,
	req *http.Request,
	handler func(w http.ResponseWriter, r *http.Request),
	expectedResp Response,
	args ...interface{},
) bool

CmpJSONResponse is used to match a JSON response body. The req *http.Request is launched against handler. If expectedResp.Body is non-nil, the response body is json.Unmarshal'ed. The response is then tested against expectedResp.

"args..." are optional and allow to name the test, a t.Log() done before starting any test. If len(args) > 1 and the first item of "args" is a string and contains a '%' rune then fmt.Fprintf is used to compose the name, else "args" are passed to fmt.Fprint.

It returns true if the tests succeed, false otherwise. 

ok := tdhttp.CmpJSONResponse(t,
  tdhttp.Get("/person/42"),
  myAPI.ServeHTTP,
  Response{
    Status: http.StatusOK,
    Header: td.ContainsKey("X-Custom-Header"),
    Body:   Person{
      ID:   42,
      Name: "Bob",
      Age:  26,
    },
  },
  "/person/{id} route")

Status, Header and Body fields of Response struct can all be TestDeep operators as it is for Header field here. Otherwise, Status should be an int, Header a http.Header and Body any type encoding/json can Unmarshal into.

If Status and Header are omitted (or nil), they are not tested.

If Body is omitted (or nil), it means the body response has to be empty. If you want to ignore the body response, use td.Ignore() explicitly.

See TestAPI type and its methods for more flexible tests.

func CmpJSONResponseFunc 

func CmpJSONResponseFunc(req *http.Request,
	handler func(w http.ResponseWriter, r *http.Request),
	expectedResp Response) func(t *testing.T)

CmpJSONResponseFunc returns a function ready to be used with testing.Run, calling CmpJSONResponse behind the scene. As it is intended to be used in conjunction with testing.Run() which names the sub-test, the test name part (args...) is voluntary omitted. 

t.Run("Subtest name", tdhttp.CmpJSONResponseFunc(
  tdhttp.Get("/json"),
  mux.ServeHTTP,
  tdhttp.Response{
    Status: http.StatusOK,
    Body:   JResp{Comment: "expected comment!"},
  }))

See CmpJSONResponse documentation for details.

See TestAPI type and its methods for more flexible tests.

func CmpMarshaledResponse 

func CmpMarshaledResponse(t testing.TB,
	req *http.Request,
	handler func(w http.ResponseWriter, r *http.Request),
	unmarshal func([]byte, interface{}) error,
	expectedResp Response,
	args ...interface{},
) bool

CmpMarshaledResponse is the base function used by some others in tdhttp package. The req *http.Request is launched against handler. The response body is unmarshaled using unmarshal. The response is then tested against expectedResp.

"args..." are optional and allow to name the test, a t.Log() done before starting any test. If len(args) > 1 and the first item of "args" is a string and contains a '%' rune then fmt.Fprintf is used to compose the name, else "args" are passed to fmt.Fprint.

It returns true if the tests succeed, false otherwise.

See TestAPI type and its methods for more flexible tests.

func CmpMarshaledResponseFunc 

func CmpMarshaledResponseFunc(req *http.Request,
	handler func(w http.ResponseWriter, r *http.Request),
	unmarshal func([]byte, interface{}) error,
	expectedResp Response) func(t *testing.T)

CmpMarshaledResponseFunc returns a function ready to be used with testing.Run, calling CmpMarshaledResponse behind the scene. As it is intended to be used in conjunction with testing.Run() which names the sub-test, the test name part (args...) is voluntary omitted. 

t.Run("Subtest name", tdhttp.CmpMarshaledResponseFunc(
  tdhttp.Get("/text"),
  mux.ServeHTTP,
  tdhttp.Response{
    Status: http.StatusOK,
  }))

See CmpMarshaledResponse documentation for details.

See TestAPI type and its methods for more flexible tests.

func CmpResponse 

func CmpResponse(t testing.TB,
	req *http.Request,
	handler func(w http.ResponseWriter, r *http.Request),
	expectedResp Response,
	args ...interface{}) bool

CmpResponse is used to match a []byte or string response body. The req *http.Request is launched against handler. If expectedResp.Body is non-nil, the response body is converted to []byte or string, depending on the expectedResp.Body type. The response is then tested against expectedResp.

"args..." are optional and allow to name the test, a t.Log() done before starting any test. If len(args) > 1 and the first item of "args" is a string and contains a '%' rune then fmt.Fprintf is used to compose the name, else "args" are passed to fmt.Fprint.

It returns true if the tests succeed, false otherwise. 

ok := tdhttp.CmpResponse(t,
  tdhttp.Get("/test"),
  myAPI.ServeHTTP,
  Response{
    Status: http.StatusOK,
    Header: td.ContainsKey("X-Custom-Header"),
    Body:   "OK!\n",
  },
  "/test route")

Status, Header and Body fields of Response struct can all be TestDeep operators as it is for Header field here. Otherwise, Status should be an int, Header a http.Header and Body a []byte or a string.

See TestAPI type and its methods for more flexible tests.

func CmpResponseFunc 

func CmpResponseFunc(req *http.Request,
	handler func(w http.ResponseWriter, r *http.Request),
	expectedResp Response) func(t *testing.T)

CmpResponseFunc returns a function ready to be used with testing.Run, calling CmpResponse behind the scene. As it is intended to be used in conjunction with testing.Run() which names the sub-test, the test name part (args...) is voluntary omitted. 

t.Run("Subtest name", tdhttp.CmpResponseFunc(
  tdhttp.Get("/text"),
  mux.ServeHTTP,
  tdhttp.Response{
    Status: http.StatusOK,
  }))

See CmpResponse documentation for details.

See TestAPI type and its methods for more flexible tests.

func CmpXMLResponse 

func CmpXMLResponse(t testing.TB,
	req *http.Request,
	handler func(w http.ResponseWriter, r *http.Request),
	expectedResp Response,
	args ...interface{},
) bool

CmpXMLResponse is used to match an XML response body. The req *http.Request is launched against handler. If expectedResp.Body is non-nil, the response body is xml.Unmarshal'ed. The response is then tested against expectedResp.

"args..." are optional and allow to name the test, a t.Log() done before starting any test. If len(args) > 1 and the first item of "args" is a string and contains a '%' rune then fmt.Fprintf is used to compose the name, else "args" are passed to fmt.Fprint.

It returns true if the tests succeed, false otherwise. 

ok := tdhttp.CmpXMLResponse(t,
  tdhttp.Get("/person/42"),
  myAPI.ServeHTTP,
  Response{
    Status: http.StatusOK,
    Header: td.ContainsKey("X-Custom-Header"),
    Body:   Person{
      ID:   42,
      Name: "Bob",
      Age:  26,
    },
  },
  "/person/{id} route")

Status, Header and Body fields of Response struct can all be TestDeep operators as it is for Header field here. Otherwise, Status should be an int, Header a http.Header and Body any type encoding/xml can Unmarshal into.

If Status and Header are omitted (or nil), they are not tested.

If Body is omitted (or nil), it means the body response has to be empty. If you want to ignore the body response, use td.Ignore() explicitly.

See TestAPI type and its methods for more flexible tests.

func CmpXMLResponseFunc 

func CmpXMLResponseFunc(req *http.Request,
	handler func(w http.ResponseWriter, r *http.Request),
	expectedResp Response) func(t *testing.T)

CmpXMLResponseFunc returns a function ready to be used with testing.Run, calling CmpXMLResponse behind the scene. As it is intended to be used in conjunction with testing.Run() which names the sub-test, the test name part (args...) is voluntary omitted. 

t.Run("Subtest name", tdhttp.CmpXMLResponseFunc(
  tdhttp.Get("/xml"),
  mux.ServeHTTP,
  tdhttp.Response{
    Status: http.StatusOK,
    Body:   JResp{Comment: "expected comment!"},
  }))

See CmpXMLResponse documentation for details.

See TestAPI type and its methods for more flexible tests.

func Delete added in v1.1.1 

func Delete(target string, body io.Reader, headers ...interface{}) *http.Request

Delete creates a HTTP DELETE. It is a shortcut for: 

NewRequest(http.MethodDelete, target, body, headers...)

See NewRequest for all possible formats accepted in headers.

func DeleteJSON added in v1.1.1 

func DeleteJSON(target string, body interface{}, headers ...interface{}) *http.Request

DeleteJSON creates a HTTP DELETE with body marshaled to JSON. "Content-Type" header is automatically set to "application/json". It is a shortcut for: 

NewJSONRequest(http.MethodDelete, target, body, headers...)

See NewRequest for all possible formats accepted in headers.

func DeleteXML added in v1.1.1 

func DeleteXML(target string, body interface{}, headers ...interface{}) *http.Request

DeleteXML creates a HTTP DELETE with body marshaled to XML. "Content-Type" header is automatically set to "application/xml". It is a shortcut for: 

NewXMLRequest(http.MethodDelete, target, body, headers...)

See NewRequest for all possible formats accepted in headers.

func Get added in v1.1.1 

func Get(target string, headers ...interface{}) *http.Request

Get creates a new HTTP GET. It is a shortcut for: 

NewRequest(http.MethodGet, target, nil, headers...)

See NewRequest for all possible formats accepted in headers. 

func Head(target string, headers ...interface{}) *http.Request

Head creates a new HTTP HEAD. It is a shortcut for: 

NewRequest(http.MethodHead, target, nil, headers...)

See NewRequest for all possible formats accepted in headers.

func NewJSONRequest 

func NewJSONRequest(method, target string, body interface{}, headers ...interface{}) *http.Request

NewJSONRequest creates a new HTTP request with body marshaled to JSON. "Content-Type" header is automatically set to "application/json". Other headers can be added via headers, as in: 

req := NewJSONRequest("POST", "/data", body,
  "X-Foo", "Foo-value",
  "X-Zip", "Zip-value",
)

See NewRequest for all possible formats accepted in headers.

func NewRequest 

func NewRequest(method, target string, body io.Reader, headers ...interface{}) *http.Request

NewRequest creates a new HTTP request as net/http/httptest.NewRequest does, with the ability to immediately add some headers using string pairs as in: 

req := NewRequest("POST", "/pdf", body,
  "Content-type", "application/pdf",
  "X-Test", "value",
)

or using http.Header as in: 

req := NewRequest("POST", "/pdf", body,
  http.Header{"Content-type": []string{"application/pdf"}},
)

Several header sources are combined: 

req := NewRequest("POST", "/pdf", body,
  "Content-type", "application/pdf",
  http.Header{"X-Test": []string{"value1"}},
  "X-Test", "value2",
)

Produce the following http.Header: 

http.Header{
  "Content-type": []string{"application/pdf"},
  "X-Test":       []string{"value1", "value2"},
}

A string slice or a map can be flatened as well. As NewRequest() expects ...interface{}, td.Flatten() can help here too: 

strHeaders := map[string]string{
  "X-Length": "666",
  "X-Foo":    "bar",
}
req := NewRequest("POST", "/pdf", body, td.Flatten(strHeaders))

Or combined with forms seen above: 

req := NewRequest("POST", "/pdf",
  "Content-type", "application/pdf",
  http.Header{"X-Test": []string{"value1"}},
  td.Flatten(strHeaders),
  "X-Test", "value2",
)

func NewXMLRequest 

func NewXMLRequest(method, target string, body interface{}, headers ...interface{}) *http.Request

NewXMLRequest creates a new HTTP request with body marshaled to XML. "Content-Type" header is automatically set to "application/xml". Other headers can be added via headers, as in: 

req := NewXMLRequest("POST", "/data", body,
  "X-Foo", "Foo-value",
  "X-Zip", "Zip-value",
)

See NewRequest for all possible formats accepted in headers.

func Patch added in v1.1.1 

func Patch(target string, body io.Reader, headers ...interface{}) *http.Request

Patch creates a HTTP PATCH. It is a shortcut for: 

NewRequest(http.MethodPatch, target, body, headers...)

See NewRequest for all possible formats accepted in headers.

func PatchJSON added in v1.1.1 

func PatchJSON(target string, body interface{}, headers ...interface{}) *http.Request

PatchJSON creates a HTTP PATCH with body marshaled to JSON. "Content-Type" header is automatically set to "application/json". It is a shortcut for: 

NewJSONRequest(http.MethodPatch, target, body, headers...)

See NewRequest for all possible formats accepted in headers.

func PatchXML added in v1.1.1 

func PatchXML(target string, body interface{}, headers ...interface{}) *http.Request

PatchXML creates a HTTP PATCH with body marshaled to XML. "Content-Type" header is automatically set to "application/xml". It is a shortcut for: 

NewXMLRequest(http.MethodPatch, target, body, headers...)

See NewRequest for all possible formats accepted in headers.

func Post added in v1.1.1 

func Post(target string, body io.Reader, headers ...interface{}) *http.Request

Post creates a HTTP POST. It is a shortcut for: 

NewRequest(http.MethodPost, target, body, headers...)

See NewRequest for all possible formats accepted in headers.

func PostForm added in v1.4.0 

func PostForm(target string, data url.Values, headers ...interface{}) *http.Request

PostForm creates a HTTP POST with data's keys and values URL-encoded as the request body. "Content-Type" header is automatically set to "application/x-www-form-urlencoded". Other headers can be added via headers, as in: 

req := PostForm("/data",
  url.Values{
    "param1": []string{"val1", "val2"},
    "param2": []string{"zip"},
  },
  "X-Foo", "Foo-value",
  "X-Zip", "Zip-value",
)

See NewRequest for all possible formats accepted in headers.

func PostJSON added in v1.1.1 

func PostJSON(target string, body interface{}, headers ...interface{}) *http.Request

PostJSON creates a HTTP POST with body marshaled to JSON. "Content-Type" header is automatically set to "application/json". It is a shortcut for: 

NewJSONRequest(http.MethodPost, target, body, headers...)

See NewRequest for all possible formats accepted in headers.

func PostXML added in v1.1.1 

func PostXML(target string, body interface{}, headers ...interface{}) *http.Request

PostXML creates a HTTP POST with body marshaled to XML. "Content-Type" header is automatically set to "application/xml". It is a shortcut for: 

NewXMLRequest(http.MethodPost, target, body, headers...)

See NewRequest for all possible formats accepted in headers.

func Put added in v1.1.1 

func Put(target string, body io.Reader, headers ...interface{}) *http.Request

Put creates a HTTP PUT. It is a shortcut for: 

NewRequest(http.MethodPut, target, body, headers...)

See NewRequest for all possible formats accepted in headers.

func PutJSON added in v1.1.1 

func PutJSON(target string, body interface{}, headers ...interface{}) *http.Request

PutJSON creates a HTTP PUT with body marshaled to JSON. "Content-Type" header is automatically set to "application/json". It is a shortcut for: 

NewJSONRequest(http.MethodPut, target, body, headers...)

See NewRequest for all possible formats accepted in headers.

func PutXML added in v1.1.1 

func PutXML(target string, body interface{}, headers ...interface{}) *http.Request

PutXML creates a HTTP PUT with body marshaled to XML. "Content-Type" header is automatically set to "application/xml". It is a shortcut for: 

NewXMLRequest(http.MethodPut, target, body, headers...)

See NewRequest for all possible formats accepted in headers.

Types

type Response 

type Response struct {
	Status interface{} // Status is the expected status (ignored if nil)
	Header interface{} // Header is the expected header (ignored if nil)
	Body   interface{} // Body is the expected body (expected to be empty if nil)
}

Response is used by Cmp*Response functions to make the HTTP response match easier. Each field, can be a TestDeep operator as well as the exact expected value.

type TestAPI added in v1.4.0 

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

TestAPI allows to test one HTTP API. See NewTestAPI function to create a new instance and get some examples of use.

func NewTestAPI added in v1.4.0 

func NewTestAPI(tb testing.TB, handler http.Handler) *TestAPI

NewTestAPI creates a TestAPI that can be used to test routes of the API behind "handler". 

tdhttp.NewTestAPI(t, mux).
  Get("/test").
  CmpStatus(200).
  CmpBody("OK!")

Several routes can be tested with the same instance as in: 

ta := tdhttp.NewTestAPI(t, mux)

ta.Get("/test").
  CmpStatus(200).
  CmpBody("OK!")

ta.Get("/ping").
  CmpStatus(200).
  CmpBody("pong")

Note that "tb" can be a *testing.T as well as a *td.T.

func (*TestAPI) A added in v1.4.0 

func (t *TestAPI) A(operator td.TestDeep, model ...interface{}) interface{}

A is a synonym for Anchor. It returns a typed value allowing to anchor the TestDeep operator "operator" in a go classic litteral like a struct, slice, array or map value. 

ta := tdhttp.NewTestAPI(tt, mux)

ta.Get("/person/42").
  CmpStatus(http.StatusOK).
  CmpJSONBody(Person{
    ID:   ta.A(td.NotZero(), uint64(0)).(uint64),
    Name: "Bob",
    Age:  26,
  })

See (*td.T).Anchor documentation https://pkg.go.dev/github.com/maxatome/go-testdeep/td#T.Anchor for details.

func (*TestAPI) Anchor added in v1.4.0 

func (t *TestAPI) Anchor(operator td.TestDeep, model ...interface{}) interface{}

Anchor returns a typed value allowing to anchor the TestDeep operator "operator" in a go classic litteral like a struct, slice, array or map value. 

ta := tdhttp.NewTestAPI(tt, mux)

ta.Get("/person/42").
  CmpStatus(http.StatusOK).
  CmpJSONBody(Person{
    ID:   ta.Anchor(td.NotZero(), uint64(0)).(uint64),
    Name: "Bob",
    Age:  26,
  })

See (*td.T).Anchor documentation for details https://pkg.go.dev/github.com/maxatome/go-testdeep/td#T.Anchor

See A method for a shorter synonym of Anchor.

func (*TestAPI) AutoDumpResponse added in v1.9.0 

func (t *TestAPI) AutoDumpResponse() *TestAPI

AutoDumpResponse allows to dump the HTTP response when the first error is encountered after a request.

func (*TestAPI) CmpBody added in v1.4.0 

func (t *TestAPI) CmpBody(expectedBody interface{}) *TestAPI

CmpBody tests the last request response body against expectedBody. expectedBody can be a []byte, a string or a TestDeep operator. 

ta := tdhttp.NewTestAPI(t, mux)

ta.Get("/test").
  CmpStatus(http.StatusOK).
  CmpBody("OK!\n")

ta.Get("/test").
  CmpStatus(http.StatusOK).
  CmpBody(td.Contains("OK"))

It fails if no request has been sent yet.

func (*TestAPI) CmpHeader added in v1.4.0 

func (t *TestAPI) CmpHeader(expectedHeader interface{}) *TestAPI

CmpHeader tests the last request response header against expectedHeader. expectedHeader can be a http.Header or a TestDeep operator. Keep in mind that if it is a http.Header, it has to match exactly the response header. Often only the presence of a header key is needed: 

ta := tdhttp.NewTestAPI(t, mux).
  PostJSON("/new", map[string]string{"name": "Bob"}).
  CmdStatus(201).
  CmpHeader(td.ContainsKey("X-Custom"))

or some specific key, value pairs: 

ta.CmpHeader(td.SuperMapOf(
  http.Header{
    "X-Account": []string{"Bob"},
  },
  td.MapEntries{
    "X-Token": td.Re(`^[a-z0-9-]{32}\z`),
  }),
)

Note that CmpHeader calls can be chained: 

ta.CmpHeader(td.ContainsKey("X-Account")).
  CmpHeader(td.ContainsKey("X-Token"))

instead of doing all tests in one call as All operator allows it: 

ta.CmpHeader(td.All(
  td.ContainsKey("X-Account"),
  td.ContainsKey("X-Token")),
)

It fails if no request has been sent yet.

func (*TestAPI) CmpJSONBody added in v1.4.0 

func (t *TestAPI) CmpJSONBody(expectedBody interface{}) *TestAPI

CmpJSONBody tests that the last request response body can be encoding/json.Unmarshall'ed and that it matches expectedBody. expectedBody can be any type encoding/json can Unmarshal into, or a TestDeep operator. 

ta := tdhttp.NewTestAPI(t, mux)

ta.Get("/person/42").
  CmpStatus(http.StatusOK).
  CmpJSONBody(Person{
    ID:   42,
    Name: "Bob",
    Age:  26,
  })

ta.PostJSON("/person", Person{Name: "Bob", Age: 23}).
  CmpStatus(http.StatusCreated).
  CmpJSONBody(td.SStruct(
    Person{
      Name: "Bob",
      Age:  26,
    },
    td.StructFields{
      "ID": td.NotZero(),
    }))

The same with anchoring, and so without td.SStruct(): 

ta := tdhttp.NewTestAPI(tt, mux)

ta.PostJSON("/person", Person{Name: "Bob", Age: 23}).
  CmpStatus(http.StatusCreated).
  CmpJSONBody(Person{
    ID:   ta.Anchor(td.NotZero(), uint64(0)).(uint64),
    Name: "Bob",
    Age:  26,
  })

The same using td.JSON(): 

ta.PostJSON("/person", Person{Name: "Bob", Age: 23}).
  CmpStatus(http.StatusCreated).
  CmpJSONBody(td.JSON(`
{
  "id":   NotZero(),
  "name": "Bob",
  "age":  26
}`))

It fails if no request has been sent yet.

func (*TestAPI) CmpMarshaledBody added in v1.4.0 

func (t *TestAPI) CmpMarshaledBody(unmarshal func([]byte, interface{}) error, expectedBody interface{}) *TestAPI

CmpMarshaledBody tests that the last request response body can be unmarshalled using unmarhsal function and then, that it matches expectedBody. expectedBody can be any type unmarshal function can handle, or a TestDeep operator.

See CmpJSONBody and CmpXMLBody sources for examples of use.

It fails if no request has been sent yet.

func (*TestAPI) CmpStatus added in v1.4.0 

func (t *TestAPI) CmpStatus(expectedStatus interface{}) *TestAPI

CmpStatus tests the last request response status against expectedStatus. expectedStatus can be an int to match a fixed HTTP status code, or a TestDeep operator. 

ta := tdhttp.NewTestAPI(t, mux)

ta.Get("/test").
  CmpStatus(http.StatusOK)

ta.PostJSON("/new", map[string]string{"name": "Bob"}).
  CmpStatus(td.Between(200, 202))

It fails if no request has been sent yet.

func (*TestAPI) CmpXMLBody added in v1.4.0 

func (t *TestAPI) CmpXMLBody(expectedBody interface{}) *TestAPI

CmpXMLBody tests that the last request response body can be encoding/xml.Unmarshall'ed and that it matches expectedBody. expectedBody can be any type encoding/xml can Unmarshal into, or a TestDeep operator. 

ta := tdhttp.NewTestAPI(t, mux)

ta.Get("/person/42").
  CmpStatus(http.StatusOK).
  CmpXMLBody(Person{
    ID:   42,
    Name: "Bob",
    Age:  26,
  })

ta.Get("/person/43").
  CmpStatus(http.StatusOK).
  CmpXMLBody(td.SStruct(
    Person{
      Name: "Bob",
      Age:  26,
    },
    td.StructFields{
      "ID": td.NotZero(),
    }))

The same with anchoring: 

ta := tdhttp.NewTestAPI(tt, mux)

ta.Get("/person/42").
  CmpStatus(http.StatusOK).
  CmpXMLBody(Person{
    ID:   ta.Anchor(td.NotZero(), uint64(0)).(uint64),
    Name: "Bob",
    Age:  26,
  })

It fails if no request has been sent yet.

func (*TestAPI) Delete added in v1.4.0 

func (t *TestAPI) Delete(target string, body io.Reader, headers ...interface{}) *TestAPI

Delete sends a HTTP DELETE to the tested API. Any Cmp* or NoBody methods can now be called.

Note that Failed() status is reset just after this call.

See NewRequest for all possible formats accepted in headers.

func (*TestAPI) DeleteJSON added in v1.4.0 

func (t *TestAPI) DeleteJSON(target string, body interface{}, headers ...interface{}) *TestAPI

DeleteJSON sends a HTTP DELETE with body marshaled to JSON. "Content-Type" header is automatically set to "application/json". Any Cmp* or NoBody methods can now be called.

Note that Failed() status is reset just after this call.

See NewRequest for all possible formats accepted in headers.

func (*TestAPI) DeleteXML added in v1.4.0 

func (t *TestAPI) DeleteXML(target string, body interface{}, headers ...interface{}) *TestAPI

DeleteXML sends a HTTP DELETE with body marshaled to XML. "Content-Type" header is automatically set to "application/xml". Any Cmp* or NoBody methods can now be called.

Note that Failed() status is reset just after this call.

See NewRequest for all possible formats accepted in headers.

func (*TestAPI) Failed added in v1.4.0 

func (t *TestAPI) Failed() bool

Failed returns true if any Cmp* or NoBody method failed since last request sending.

func (*TestAPI) Get added in v1.4.0 

func (t *TestAPI) Get(target string, headers ...interface{}) *TestAPI

Get sends a HTTP GET to the tested API. Any Cmp* or NoBody methods can now be called.

Note that Failed() status is reset just after this call.

See NewRequest for all possible formats accepted in headers.

func (*TestAPI) Head added in v1.4.0 

func (t *TestAPI) Head(target string, headers ...interface{}) *TestAPI

Head sends a HTTP HEAD to the tested API. Any Cmp* or NoBody methods can now be called.

Note that Failed() status is reset just after this call.

See NewRequest for all possible formats accepted in headers.

func (*TestAPI) Name added in v1.4.0 

func (t *TestAPI) Name(args ...interface{}) *TestAPI

Name allows to name the series of tests that follow. This name is used as a prefix for all following tests, in case of failure to qualify each test. If len(args) > 1 and the first item of "args" is a string and contains a '%' rune then fmt.Fprintf is used to compose the name, else "args" are passed to fmt.Fprint.

func (*TestAPI) NewJSONRequest added in v1.4.0 

func (t *TestAPI) NewJSONRequest(method, target string, body interface{}, headers ...interface{}) *TestAPI

NewJSONRequest sends a HTTP request with body marshaled to JSON. "Content-Type" header is automatically set to "application/json". Any Cmp* or NoBody methods can now be called.

Note that Failed() status is reset just after this call.

See NewRequest for all possible formats accepted in headers.

func (*TestAPI) NewXMLRequest added in v1.4.0 

func (t *TestAPI) NewXMLRequest(method, target string, body interface{}, headers ...interface{}) *TestAPI

NewXMLRequest sends a HTTP request with body marshaled to XML. "Content-Type" header is automatically set to "application/xml". Any Cmp* or NoBody methods can now be called.

Note that Failed() status is reset just after this call.

See NewRequest for all possible formats accepted in headers.

func (*TestAPI) NoBody added in v1.4.0 

func (t *TestAPI) NoBody() *TestAPI

NoBody tests that the last request response body is empty.

It fails if no request has been sent yet.

func (*TestAPI) Or added in v1.7.0 

func (t *TestAPI) Or(fn interface{}) *TestAPI

Or executes function "fn" if t.Failed() is true at the moment it is called.

"fn" can have several types:

  • func(body string) or func(t *td.T, body string) → "fn" is called with response body as a string. If no response has been received yet, body is "";
  • func(body []byte) or func(t *td.T, body []byte) → "fn" is called with response body as a []byte. If no response has been received yet, body is nil;
  • func(t *td.T, resp *httptest.ResponseRecorder) → "fn" is called with the internal object containing the response. See net/http/httptest for details. If no response has been received yet, resp is nil.

If "fn" type is not one of these types, it panics.

func (*TestAPI) OrDumpResponse added in v1.9.0 

func (t *TestAPI) OrDumpResponse() *TestAPI

OrDumpResponse dumps the response if at least one previous test failed. 

ta := tdhttp.NewTestAPI(t, handler)

ta.Get("/foo").
  CmpStatus(200).
  OrDumpResponse(). // if status check failed, dumps the response
  CmpBody("bar")    // if it fails, the response is not dumped

ta.Get("/foo").
  CmpStatus(200).
  CmpBody("bar").
  OrDumpResponse() // dumps the response if status and/or body checks fail

See AutoDumpResponse method to automatize this dump.

func (*TestAPI) Patch added in v1.4.0 

func (t *TestAPI) Patch(target string, body io.Reader, headers ...interface{}) *TestAPI

Patch sends a HTTP PATCH to the tested API. Any Cmp* or NoBody methods can now be called.

Note that Failed() status is reset just after this call.

See NewRequest for all possible formats accepted in headers.

func (*TestAPI) PatchJSON added in v1.4.0 

func (t *TestAPI) PatchJSON(target string, body interface{}, headers ...interface{}) *TestAPI

PatchJSON sends a HTTP PATCH with body marshaled to JSON. "Content-Type" header is automatically set to "application/json". Any Cmp* or NoBody methods can now be called.

Note that Failed() status is reset just after this call.

See NewRequest for all possible formats accepted in headers.

func (*TestAPI) PatchXML added in v1.4.0 

func (t *TestAPI) PatchXML(target string, body interface{}, headers ...interface{}) *TestAPI

PatchXML sends a HTTP PATCH with body marshaled to XML. "Content-Type" header is automatically set to "application/xml". Any Cmp* or NoBody methods can now be called.

Note that Failed() status is reset just after this call.

See NewRequest for all possible formats accepted in headers.

func (*TestAPI) Post added in v1.4.0 

func (t *TestAPI) Post(target string, body io.Reader, headers ...interface{}) *TestAPI

Post sends a HTTP POST to the tested API. Any Cmp* or NoBody methods can now be called.

Note that Failed() status is reset just after this call.

See NewRequest for all possible formats accepted in headers.

func (*TestAPI) PostForm added in v1.4.0 

func (t *TestAPI) PostForm(target string, data url.Values, headers ...interface{}) *TestAPI

PostForm sends a HTTP POST with data's keys and values URL-encoded as the request body to the tested API.. "Content-Type" header is automatically set to "application/x-www-form-urlencoded". Any Cmp* or NoBody methods can now be called.

Note that Failed() status is reset just after this call.

See NewRequest for all possible formats accepted in headers.

func (*TestAPI) PostJSON added in v1.4.0 

func (t *TestAPI) PostJSON(target string, body interface{}, headers ...interface{}) *TestAPI

PostJSON sends a HTTP POST with body marshaled to JSON. "Content-Type" header is automatically set to "application/json". Any Cmp* or NoBody methods can now be called.

Note that Failed() status is reset just after this call.

See NewRequest for all possible formats accepted in headers.

func (*TestAPI) PostXML added in v1.4.0 

func (t *TestAPI) PostXML(target string, body interface{}, headers ...interface{}) *TestAPI

PostXML sends a HTTP POST with body marshaled to XML. "Content-Type" header is automatically set to "application/xml". Any Cmp* or NoBody methods can now be called.

Note that Failed() status is reset just after this call.

See NewRequest for all possible formats accepted in headers.

func (*TestAPI) Put added in v1.4.0 

func (t *TestAPI) Put(target string, body io.Reader, headers ...interface{}) *TestAPI

Put sends a HTTP PUT to the tested API. Any Cmp* or NoBody methods can now be called.

Note that Failed() status is reset just after this call.

See NewRequest for all possible formats accepted in headers.

func (*TestAPI) PutJSON added in v1.4.0 

func (t *TestAPI) PutJSON(target string, body interface{}, headers ...interface{}) *TestAPI

PutJSON sends a HTTP PUT with body marshaled to JSON. "Content-Type" header is automatically set to "application/json". Any Cmp* or NoBody methods can now be called.

Note that Failed() status is reset just after this call.

See NewRequest for all possible formats accepted in headers.

func (*TestAPI) PutXML added in v1.4.0 

func (t *TestAPI) PutXML(target string, body interface{}, headers ...interface{}) *TestAPI

PutXML sends a HTTP PUT with body marshaled to XML. "Content-Type" header is automatically set to "application/xml". Any Cmp* or NoBody methods can now be called.

Note that Failed() status is reset just after this call.

See NewRequest for all possible formats accepted in headers.

func (*TestAPI) Request added in v1.4.0 

func (t *TestAPI) Request(req *http.Request) *TestAPI

Request sends a new HTTP request to the tested API. Any Cmp* or NoBody methods can now be called.

Note that Failed() status is reset just after this call.

func (*TestAPI) Run added in v1.9.0 

func (t *TestAPI) Run(name string, f func(t *TestAPI)) bool

Run runs "f" as a subtest of t called "name".

func (*TestAPI) SentAt added in v1.4.0 

func (t *TestAPI) SentAt() time.Time

SentAt returns the time just before the last request is handled. It can be used to check the time a route sets and returns, as in: 

ta.PostJSON("/person/42", Person{Name: "Bob", Age: 23}).
  CmpStatus(http.StatusCreated).
  CmpJSONBody(Person{
    ID:        ta.A(td.NotZero(), uint64(0)).(uint64),
    Name:      "Bob",
    Age:       23,
    CreatedAt: ta.A(td.Between(ta.SentAt(), time.Now())).(time.Time),
  })

checks that CreatedAt is included between the time when the request has been sent, and the time when the comparison occurs.

func (*TestAPI) T added in v1.9.0 

func (t *TestAPI) T() *td.T

T returns the internal instance of *td.T.

func (*TestAPI) With added in v1.9.0 

func (t *TestAPI) With(tb testing.TB) *TestAPI

With creates a new *TestAPI instance copied from "t", but resetting the testing.TB instance the tests are based on to "tb". The returned instance is independent from "t", sharing only the same handler.

It is typically used when the *TestAPI instance is "reused" in sub-tests, as in: 

func TestMyAPI(t *testing.T) {
  ta := tdhttp.NewTestAPI(t, MyAPIHandler())

  ta.Get("/test").CmpStatus(200)

  t.Run("errors", func (t *testing.T) {
    ta := ta.With(t)

    ta.Get("/test?bad=1").CmpStatus(400)
    ta.Get("/test?bad=buzz").CmpStatus(400)
  }

  ta.Get("/next").CmpStatus(200)
}

Note that "tb" can be a *testing.T as well as a *td.T.

See Run method for another way to handle subtests.

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