Function TestCodec

json/json_test.go:367–422

(t *testing.T)

}

func TestCodec(t *testing.T) {
	for _, v1 := range testValues {
		t.Run(testName(v1), func(t *testing.T) {
			v2 := newValue(v1)

			a, err := json.MarshalIndent(v1, "", "\t")
			if err != nil {
				t.Error(err)
				return
			}
			a = append(a, '\n')

			buf := &bytes.Buffer{}
			enc := NewEncoder(buf)
			enc.SetIndent("", "\t")

			if err := enc.Encode(v1); err != nil {
				t.Error(err)
				return
			}
			b := buf.Bytes()

			if !Valid(b) {
				t.Error("invalid JSON representation")
			}

			if !bytes.Equal(a, b) {
				t.Error("JSON representations mismatch")
				t.Log("expected:", string(a))
				t.Log("found:   ", string(b))
			}

			dec := NewDecoder(bytes.NewBuffer(b))

			if err := dec.Decode(v2.Interface()); err != nil {
				t.Errorf("%T: %v", err, err)
				return
			}

			x1 := v1
			x2 := v2.Elem().Interface()

			if !reflect.DeepEqual(x1, x2) {
				t.Error("values mismatch")
				t.Logf("expected: %#v", x1)
				t.Logf("found:    %#v", x2)
			}

			if b, err := io.ReadAll(dec.Buffered()); err != nil {
				t.Error(err)
			} else if len(b) != 0 {
				t.Errorf("leftover trailing bytes in the decoder: %q", b)
			}
		})
	}
}

// TestCodecDuration isolates testing of time.Duration.  The stdlib un/marshals