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Use httpexpect to test server

 2 years ago
source link: https://dannypsnl.github.io/blog/2018/09/16/cs/httpexpect-go/
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Use httpexpect to test server

Use builtin functionality to test a Go server is a panicful experience. The problem is because we have to handle too many error and get so much thing we aren't always need.

Of course, we will create a abstraction to reduce this panic. But if we already have a mature solution? That is httpexpect

We have two options about import:

  • import "github.com/gavv/httpexpect.v1"
  • import "github.com/gavv/httpexpect"

The different is v1 is stable branch, another is master branch on github.

I suggest pick stable one for company project, but it's fine to use master branch at side project.

httpexpect works pretty good with httptest. A simple example:

type fakeHandler struct {
}

func (h *fakeHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	fmt.Fprint(w, "Hello")
}

func TestIt(t *testing.T) {
	handler := &fakeHandler{}
	server := httptest.NewServer(handler)
	defer server.Close()

	e := httpexpect.New(t, server.URL)

	e.GET("/").
		Expect().
		Status(http.StatusOK).
		Body().Equal("Hello")
}

How about add form value?

e.PATCH("/test/patch").WithFormField("value", "patch").
	Expect().Status(http.StatusOK).
	Body().Equal("patch")

JSON response?

e.POST("/post").
	Expect().Status(http.StatusOK).
	ContentType("application/json", "").
	JSON().Equal(expected)

Query?

e.GET("/user").WithQuery("name", "Danny").
	Expect().Status(http.StatusOK).

Hope you would feel happy with this little introduction.


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