Peter von der Ahé
a92ddcf34b
Change-Id: I671f317ee2c806380584646c75412762e549418e Reviewed-on: https://dart-review.googlesource.com/c/93023 Reviewed-by: Jens Johansen <jensj@google.com>
55 lines
1.8 KiB
Dart
55 lines
1.8 KiB
Dart
// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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/// This library is supposed help to remove dependencies on package:test from
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/// an existing test.
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///
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/// Feel free to add more matchers, as long as they remain lite. Batteries
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/// aren't included here. This is intended to be used in low-level platform
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/// tests and shouldn't rely on advanced features such as reflection. Using
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/// asynchronous code is acceptable, but only for testing code that is
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/// *already* asynchronous, but try to avoid using "async" and other generators
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/// (it's hard testing the implemention of generators if the test
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/// infrastructure relies on them itself).
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library expect.matchers_lite;
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import "expect.dart" show Expect;
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typedef Matcher = void Function(Object actual);
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void expect(Object actual, Object expected) {
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if (expected is Matcher) {
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expected(actual);
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} else {
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equals(expected)(actual);
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}
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}
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Matcher unorderedEquals(Iterable<Object> expected) {
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return (Object actual) => Expect.setEquals(expected, actual);
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}
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fail(String message) {
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Expect.fail(message);
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}
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Matcher same(Object expected) {
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return (Object actual) => Expect.identical(expected, actual);
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}
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Matcher equals(Object expected) {
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if (expected is String) {
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return (Object actual) => Expect.stringEquals(expected, actual);
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} else if (expected is Iterable<Object>) {
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return (dynamic actual) =>
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Expect.listEquals(expected.toList(), actual.toList());
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} else {
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return (Object actual) => Expect.equals(expected, actual);
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}
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}
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final Matcher isEmpty = (dynamic actual) => Expect.isTrue(actual.isEmpty);
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final Matcher isNull = (Object actual) => Expect.isNull(actual);
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