dart-sdk/tests/lib/html/js_dart_to_string_test.dart
Srujan Gaddam 39509bae5f [dart:html] Migrate html js tests to NNBD
Change-Id: I01cf3de95f4d7c67f97d440187a2d7254c7daecc
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/140646
Reviewed-by: Bob Nystrom <rnystrom@google.com>
2020-04-03 17:43:57 +00:00

44 lines
999 B
Dart

// Copyright (c) 2015, 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.
@JS()
library js_dart_to_string_test;
import 'dart:html';
import 'package:js/js.dart';
import 'package:expect/minitest.dart';
_injectJs() {
document.body!.append(new ScriptElement()
..type = 'text/javascript'
..innerHtml = r"""
function jsToStringViaCoercion(a) {
return a + '';
};
""");
}
@JS()
external String jsToStringViaCoercion(obj);
class ExampleClassWithCustomToString {
var x;
ExampleClassWithCustomToString(this.x);
String toString() => "#$x#";
}
main() {
_injectJs();
group('toString', () {
test('custom dart', () {
var x = new ExampleClassWithCustomToString("fooBar");
expect(jsToStringViaCoercion(x), equals("#fooBar#"));
expect(jsToStringViaCoercion({'a': 1, 'b': 2}), equals("{a: 1, b: 2}"));
});
});
}