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.