Function testImpl

internal/test/parameters/param_roundtrip_test.go:95–517

testImpl runs the full parameter roundtrip test suite against any http.Handler. The generated client serializes Go values into an HTTP request, the server deserializes them and echoes them back as JSON, and we compare the response body against the original values.

(t *testing.T, handler http.Handler)

// deserializes them and echoes them back as JSON, and we compare the response
// body against the original values.
func testImpl(t *testing.T, handler http.Handler) {
	t.Helper()

	server := "http://example.com"

	expectedObject := paramclient.Object{
		FirstName: "Alex",
		Role:      "admin",
	}

	expectedComplexObject := paramclient.ComplexObject{
		Object:  expectedObject,
		Id:      12345,
		IsAdmin: true,
	}

	expectedArray := []int32{3, 4, 5}

	var expectedPrimitive int32 = 5

	// doRoundTrip sends a request to the handler, asserts 200, and decodes the JSON response.
	doRoundTrip := func(t *testing.T, req *http.Request, target interface{}) {
		t.Helper()
		// The generated client produces requests via http.NewRequest which
		// leaves RequestURI empty. Some adapters (notably Fiber) need it
		// set to route correctly.
		req.RequestURI = req.URL.RequestURI()
		rec := httptest.NewRecorder()
		handler.ServeHTTP(rec, req)
		if !assert.Equal(t, http.StatusOK, rec.Code, "server returned %d; body: %s", rec.Code, rec.Body.String()) {
			return
		}
		if target != nil {
			require.NoError(t, json.NewDecoder(rec.Body).Decode(target), "failed to decode response body")
		}
	}

	// =========================================================================
	// Path Parameters
	// =========================================================================
	t.Run("path", func(t *testing.T) {
		t.Run("simple", func(t *testing.T) {
			t.Run("primitive", func(t *testing.T) {
				req, err := paramclient.NewGetSimplePrimitiveRequest(server, expectedPrimitive)
				require.NoError(t, err)
				var got int32
				doRoundTrip(t, req, &got)
				assert.Equal(t, expectedPrimitive, got)
			})

			t.Run("primitive explode", func(t *testing.T) {
				req, err := paramclient.NewGetSimpleExplodePrimitiveRequest(server, expectedPrimitive)
				require.NoError(t, err)
				var got int32
				doRoundTrip(t, req, &got)
				assert.Equal(t, expectedPrimitive, got)
			})