http server测试

func TestHelloHandleFunc(t *testing.T) {
	rw := httptest.NewRecorder()
	req := httptest.NewRequest(http.MethodPost, "/hello, nil)
	handleHello(rw, req)

	if rw.Code != http.StatusOK {
		t.Errorf("status code not ok, status code is %v", rw.Code)
	}

}

func TestHTTPServer(t *testing.T) {
	ts := httptest.NewServer(http.HandlerFunc(handleHello))
	defer ts.Close()

	log.Printf("server url: %s", ts.URL)

	testURL := ts.URL + "/hello
	resp, err := http.Get(testURL)
	if err != nil {
		t.Error(err)
		return
	}
	if g, w := resp.StatusCode, http.StatusOK; g != w {
		t.Errorf("status code = %q; want %q", g, w)
		return
	}
}

go test cover
go test -coverprofile=coverage.out
go tool cover -html=coverage.out

go test -race