Function TestCopyJSONNegativeUTF8

msgp/json_test.go:104–128

Encoder should generate valid utf-8 even if passed bad input

(t *testing.T)

// Encoder should generate valid utf-8 even if passed bad input
func TestCopyJSONNegativeUTF8(t *testing.T) {
	// Single string with non-compliant utf-8 byte
	stringWithBadUTF8 := []byte{
		0xa1, 0xe0,
	}

	src := bytes.NewBuffer(stringWithBadUTF8)

	var js bytes.Buffer
	_, err := CopyToJSON(&js, src)
	if err != nil {
		t.Fatal(err)
	}

	// Even though we provided bad input, should have escaped the naughty character
	if !utf8.Valid(js.Bytes()) {
		t.Errorf("Expected JSON to be valid utf-8 even when provided bad input")
	}

	// Expect a bad character string
	expected := `"\ufffd"`
	if js.String() != expected {
		t.Errorf("Expected: '%s', got: '%s'", expected, js.String())
	}
}

func BenchmarkCopyToJSON(b *testing.B) {
	var buf bytes.Buffer