blob: 4be183a6401c3365f141b985c0e7fa34e1b54b5d [file] [log] [blame]
// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
// Dart test program for the "is" type test operator.
// @dart = 2.9
import "package:expect/expect.dart";
testTryCatch(x) {
try {
throw x;"Exception '$x' should've been thrown");
} on Object catch (obj) {
Expect.equals(obj, x);
main() {
var evalCount = 0;
testEval(x) {
return x;
// Test that types that match JS primitive types compare correctly to Object
var x = 1;
Expect.isTrue(x is Object);
var x2 = 'hi';
Expect.isTrue(x2 is Object);
var x3 = true;
Expect.isTrue(x3 is Object);
var x4 = null;
Expect.isTrue(x4 is Object);
var y;
Expect.isTrue(y is Object);
// Verify that operand is evaluated
Expect.isTrue(testEval(123) is Object);
Expect.equals(1, evalCount);
Expect.isTrue(testEval('world') is Object);
Expect.equals(2, evalCount);
Expect.isTrue(testEval(false) is Object);
Expect.equals(3, evalCount);
Expect.isTrue(testEval(null) is Object);
Expect.equals(4, evalCount);
// Verify that these objects are catchable