feat: add httpc.Parse (#1698)

rest/httpc/responses_test.go

@@ -0,0 +1,58 @@
+package httpc
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestParse(t *testing.T) {
+	var val struct {
+		Foo   string `header:"foo"`
+		Name  string `json:"name"`
+		Value int    `json:"value"`
+	}
+	svr := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("foo", "bar")
+		w.Header().Set(contentType, applicationJson)
+		w.Write([]byte(`{"name":"kevin","value":100}`))
+	}))
+	defer svr.Close()
+	resp, err := Get("foo", svr.URL)
+	assert.Nil(t, err)
+	assert.Nil(t, Parse(resp, &val))
+	assert.Equal(t, "bar", val.Foo)
+	assert.Equal(t, "kevin", val.Name)
+	assert.Equal(t, 100, val.Value)
+}
+
+func TestParseHeaderError(t *testing.T) {
+	var val struct {
+		Foo int `header:"foo"`
+	}
+	svr := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("foo", "bar")
+		w.Header().Set(contentType, applicationJson)
+	}))
+	defer svr.Close()
+	resp, err := Get("foo", svr.URL)
+	assert.Nil(t, err)
+	assert.NotNil(t, Parse(resp, &val))
+}
+
+func TestParseNoBody(t *testing.T) {
+	var val struct {
+		Foo string `header:"foo"`
+	}
+	svr := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("foo", "bar")
+		w.Header().Set(contentType, applicationJson)
+	}))
+	defer svr.Close()
+	resp, err := Get("foo", svr.URL)
+	assert.Nil(t, err)
+	assert.Nil(t, Parse(resp, &val))
+	assert.Equal(t, "bar", val.Foo)
+}