ProductPromotion
Logo

Go.Lang

made by https://0x3d.site

GitHub - jarcoal/httpmock: HTTP mocking for Golang
HTTP mocking for Golang. Contribute to jarcoal/httpmock development by creating an account on GitHub.
Visit Site

GitHub - jarcoal/httpmock: HTTP mocking for Golang

GitHub - jarcoal/httpmock: HTTP mocking for Golang

httpmock Build Status Coverage Status GoDoc Version Mentioned in Awesome Go

Easy mocking of http responses from external resources.

Install

Currently supports Go 1.13 to 1.23 and is regularly tested against tip.

v1 branch has to be used instead of master.

In your go files, simply use:

import "github.com/jarcoal/httpmock"

Then next go mod tidy or go test invocation will automatically populate your go.mod with the latest httpmock release, now Version.

Usage

Simple Example:

func TestFetchArticles(t *testing.T) {
  httpmock.Activate()
  t.Cleanup(httpmock.DeactivateAndReset)

  // Exact URL match
  httpmock.RegisterResponder("GET", "https://api.mybiz.com/articles",
    httpmock.NewStringResponder(200, `[{"id": 1, "name": "My Great Article"}]`))

  // Regexp match (could use httpmock.RegisterRegexpResponder instead)
  httpmock.RegisterResponder("GET", `=~^https://api\.mybiz\.com/articles/id/\d+\z`,
    httpmock.NewStringResponder(200, `{"id": 1, "name": "My Great Article"}`))

  // do stuff that makes a request to articles
  ...

  // get count info
  httpmock.GetTotalCallCount()

  // get the amount of calls for the registered responder
  info := httpmock.GetCallCountInfo()
  info["GET https://api.mybiz.com/articles"] // number of GET calls made to https://api.mybiz.com/articles
  info["GET https://api.mybiz.com/articles/id/12"] // number of GET calls made to https://api.mybiz.com/articles/id/12
  info[`GET =~^https://api\.mybiz\.com/articles/id/\d+\z`] // number of GET calls made to https://api.mybiz.com/articles/id/<any-number>
}

Advanced Example:

func TestFetchArticles(t *testing.T) {
  httpmock.Activate()
  t.Cleanup(httpmock.DeactivateAndReset)

  // our database of articles
  articles := make([]map[string]interface{}, 0)

  // mock to list out the articles
  httpmock.RegisterResponder("GET", "https://api.mybiz.com/articles",
    func(req *http.Request) (*http.Response, error) {
      resp, err := httpmock.NewJsonResponse(200, articles)
      if err != nil {
        return httpmock.NewStringResponse(500, ""), nil
      }
      return resp, nil
    })

  // return an article related to the request with the help of regexp submatch (\d+)
  httpmock.RegisterResponder("GET", `=~^https://api\.mybiz\.com/articles/id/(\d+)\z`,
    func(req *http.Request) (*http.Response, error) {
      // Get ID from request
      id := httpmock.MustGetSubmatchAsUint(req, 1) // 1=first regexp submatch
      return httpmock.NewJsonResponse(200, map[string]interface{}{
        "id":   id,
        "name": "My Great Article",
      })
    })

  // mock to add a new article
  httpmock.RegisterResponder("POST", "https://api.mybiz.com/articles",
    func(req *http.Request) (*http.Response, error) {
      article := make(map[string]interface{})
      if err := json.NewDecoder(req.Body).Decode(&article); err != nil {
        return httpmock.NewStringResponse(400, ""), nil
      }

      articles = append(articles, article)

      resp, err := httpmock.NewJsonResponse(200, article)
      if err != nil {
        return httpmock.NewStringResponse(500, ""), nil
      }
      return resp, nil
    })

  // mock to add a specific article, send a Bad Request response
  // when the request body contains `"type":"toy"`
  httpmock.RegisterMatcherResponder("POST", "https://api.mybiz.com/articles",
    httpmock.BodyContainsString(`"type":"toy"`),
    httpmock.NewStringResponder(400, `{"reason":"Invalid article type"}`))

  // do stuff that adds and checks articles
}

Algorithm

When GET http://example.tld/some/path?b=12&a=foo&a=bar request is caught, all standard responders are checked against the following URL or paths, the first match stops the search:

  1. http://example.tld/some/path?b=12&a=foo&a=bar (original URL)
  2. http://example.tld/some/path?a=bar&a=foo&b=12 (sorted query params)
  3. http://example.tld/some/path (without query params)
  4. /some/path?b=12&a=foo&a=bar (original URL without scheme and host)
  5. /some/path?a=bar&a=foo&b=12 (same, but sorted query params)
  6. /some/path (path only)

If no standard responder matched, the regexp responders are checked, in the same order, the first match stops the search.

go-testdeep + tdsuite example:

// article_test.go

import (
  "testing"

  "github.com/jarcoal/httpmock"
  "github.com/maxatome/go-testdeep/helpers/tdsuite"
  "github.com/maxatome/go-testdeep/td"
)

type MySuite struct{}

func (s *MySuite) Setup(t *td.T) error {
  // block all HTTP requests
  httpmock.Activate()
  return nil
}

func (s *MySuite) PostTest(t *td.T, testName string) error {
  // remove any mocks after each test
  httpmock.Reset()
  return nil
}

func (s *MySuite) Destroy(t *td.T) error {
  httpmock.DeactivateAndReset()
  return nil
}

func TestMySuite(t *testing.T) {
  tdsuite.Run(t, &MySuite{})
}

func (s *MySuite) TestArticles(assert, require *td.T) {
  httpmock.RegisterResponder("GET", "https://api.mybiz.com/articles.json",
    httpmock.NewStringResponder(200, `[{"id": 1, "name": "My Great Article"}]`))

  // do stuff that makes a request to articles.json
}

Ginkgo example:

// article_suite_test.go

import (
  // ...
  "github.com/jarcoal/httpmock"
)
// ...
var _ = BeforeSuite(func() {
  // block all HTTP requests
  httpmock.Activate()
})

var _ = BeforeEach(func() {
  // remove any mocks
  httpmock.Reset()
})

var _ = AfterSuite(func() {
  httpmock.DeactivateAndReset()
})


// article_test.go

import (
  // ...
  "github.com/jarcoal/httpmock"
)

var _ = Describe("Articles", func() {
  It("returns a list of articles", func() {
    httpmock.RegisterResponder("GET", "https://api.mybiz.com/articles.json",
      httpmock.NewStringResponder(200, `[{"id": 1, "name": "My Great Article"}]`))

    // do stuff that makes a request to articles.json
  })
})

Ginkgo + Resty Example:

// article_suite_test.go

import (
  // ...
  "github.com/jarcoal/httpmock"
  "github.com/go-resty/resty"
)
// ...
var _ = BeforeSuite(func() {
  // block all HTTP requests
  httpmock.ActivateNonDefault(resty.DefaultClient.GetClient())
})

var _ = BeforeEach(func() {
  // remove any mocks
  httpmock.Reset()
})

var _ = AfterSuite(func() {
  httpmock.DeactivateAndReset()
})


// article_test.go

import (
  // ...
  "github.com/jarcoal/httpmock"
  "github.com/go-resty/resty"
)

var _ = Describe("Articles", func() {
  It("returns a list of articles", func() {
    fixture := `{"status":{"message": "Your message", "code": 200}}`
    responder := httpmock.NewStringResponder(200, fixture)
    fakeUrl := "https://api.mybiz.com/articles.json"
    httpmock.RegisterResponder("GET", fakeUrl, responder)

    // fetch the article into struct
    articleObject := &models.Article{}
    _, err := resty.R().SetResult(articleObject).Get(fakeUrl)

    // do stuff with the article object ...
  })
})

Articles
to learn more about the golang concepts.

Resources
which are currently available to browse on.

mail [email protected] to add your project or resources here ๐Ÿ”ฅ.

FAQ's
to know more about the topic.

mail [email protected] to add your project or resources here ๐Ÿ”ฅ.

Queries
or most google FAQ's about GoLang.

mail [email protected] to add more queries here ๐Ÿ”.

More Sites
to check out once you're finished browsing here.

0x3d
https://www.0x3d.site/
0x3d is designed for aggregating information.
NodeJS
https://nodejs.0x3d.site/
NodeJS Online Directory
Cross Platform
https://cross-platform.0x3d.site/
Cross Platform Online Directory
Open Source
https://open-source.0x3d.site/
Open Source Online Directory
Analytics
https://analytics.0x3d.site/
Analytics Online Directory
JavaScript
https://javascript.0x3d.site/
JavaScript Online Directory
GoLang
https://golang.0x3d.site/
GoLang Online Directory
Python
https://python.0x3d.site/
Python Online Directory
Swift
https://swift.0x3d.site/
Swift Online Directory
Rust
https://rust.0x3d.site/
Rust Online Directory
Scala
https://scala.0x3d.site/
Scala Online Directory
Ruby
https://ruby.0x3d.site/
Ruby Online Directory
Clojure
https://clojure.0x3d.site/
Clojure Online Directory
Elixir
https://elixir.0x3d.site/
Elixir Online Directory
Elm
https://elm.0x3d.site/
Elm Online Directory
Lua
https://lua.0x3d.site/
Lua Online Directory
C Programming
https://c-programming.0x3d.site/
C Programming Online Directory
C++ Programming
https://cpp-programming.0x3d.site/
C++ Programming Online Directory
R Programming
https://r-programming.0x3d.site/
R Programming Online Directory
Perl
https://perl.0x3d.site/
Perl Online Directory
Java
https://java.0x3d.site/
Java Online Directory
Kotlin
https://kotlin.0x3d.site/
Kotlin Online Directory
PHP
https://php.0x3d.site/
PHP Online Directory
React JS
https://react.0x3d.site/
React JS Online Directory
Angular
https://angular.0x3d.site/
Angular JS Online Directory