| // Copyright (c) 2012, 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. |
| |
| import 'package:matcher/expect.dart'; |
| import 'package:test/test.dart' show TestFailure, group, test; |
| |
| import 'test_utils.dart'; |
| |
| void main() { |
| test('isTrue', () { |
| shouldPass(true, isTrue); |
| shouldFail(false, isTrue, 'Expected: true Actual: <false>'); |
| }); |
| |
| test('isFalse', () { |
| shouldPass(false, isFalse); |
| shouldFail(10, isFalse, 'Expected: false Actual: <10>'); |
| shouldFail(true, isFalse, 'Expected: false Actual: <true>'); |
| }); |
| |
| test('isNull', () { |
| shouldPass(null, isNull); |
| shouldFail(false, isNull, 'Expected: null Actual: <false>'); |
| }); |
| |
| test('isNotNull', () { |
| shouldPass(false, isNotNull); |
| shouldFail(null, isNotNull, 'Expected: not null Actual: <null>'); |
| }); |
| |
| test('isNaN', () { |
| shouldPass(double.nan, isNaN); |
| shouldFail(3.1, isNaN, 'Expected: NaN Actual: <3.1>'); |
| shouldFail('not a num', isNaN, endsWith('not an <Instance of \'num\'>')); |
| }); |
| |
| test('isNotNaN', () { |
| shouldPass(3.1, isNotNaN); |
| shouldFail(double.nan, isNotNaN, 'Expected: not NaN Actual: <NaN>'); |
| shouldFail('not a num', isNotNaN, endsWith('not an <Instance of \'num\'>')); |
| }); |
| |
| test('same', () { |
| var a = <Object?, Object?>{}; |
| var b = <Object?, Object?>{}; |
| shouldPass(a, same(a)); |
| shouldFail(b, same(a), 'Expected: same instance as {} Actual: {}'); |
| }); |
| |
| test('equals', () { |
| var a = <Object?, Object?>{}; |
| var b = <Object?, Object?>{}; |
| shouldPass(a, equals(a)); |
| shouldPass(a, equals(b)); |
| }); |
| |
| test('equals with null', () { |
| Object? a; // null |
| var b = <Object?, Object?>{}; |
| shouldPass(a, equals(a)); |
| shouldFail( |
| a, |
| equals(b), |
| 'Expected: {} Actual: <null> Which: expected a map', |
| ); |
| shouldFail(b, equals(a), 'Expected: <null> Actual: {}'); |
| }); |
| |
| test('equals with a set', () { |
| var numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]; |
| var set1 = numbers.toSet(); |
| numbers.shuffle(); |
| var set2 = numbers.toSet(); |
| |
| shouldPass(set2, equals(set1)); |
| shouldPass(numbers, equals(set1)); |
| shouldFail( |
| [1, 2, 3, 4, 5, 6, 7, 8, 9], |
| equals(set1), |
| matches( |
| r'Expected: .*:\[1, 2, 3, 4, 5, 6, 7, 8, 9, 10\]' |
| r' Actual: \[1, 2, 3, 4, 5, 6, 7, 8, 9\]' |
| r' Which: does not contain <10>', |
| ), |
| ); |
| shouldFail( |
| [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11], |
| equals(set1), |
| matches( |
| r'Expected: .*:\[1, 2, 3, 4, 5, 6, 7, 8, 9, 10\]' |
| r' Actual: \[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11\]' |
| r' Which: larger than expected', |
| ), |
| ); |
| }); |
| |
| test('equals with NaN', () { |
| final a = double.nan; |
| final b = 0; |
| shouldPass(a, equals(a)); |
| shouldFail(a, equals(b), 'Expected: <0> Actual: <NaN>'); |
| shouldFail(b, equals(a), 'Expected: <NaN> Actual: <0>'); |
| }); |
| |
| test('equals with NaN in a collection', () { |
| final a = {double.nan}; |
| final b = {0}; |
| shouldPass(a, equals(a)); |
| shouldFail( |
| a, |
| equals(b), |
| 'Expected: Set:[0] Actual: Set:[NaN] ' |
| 'Which: does not contain <0>', |
| ); |
| shouldFail( |
| b, |
| equals(a), |
| 'Expected: Set:[NaN] Actual: Set:[0] ' |
| 'Which: does not contain <NaN>', |
| ); |
| }); |
| |
| test('equals that throw expose the exception', () { |
| expect( |
| () { |
| expect(0, isNot(equals(_ThrowingEquals()))); |
| }, |
| throwsA( |
| isA<TestFailure>().having( |
| (e) => e.message, |
| 'message', |
| contains(_ThrowingEquals.message), |
| ), |
| ), |
| ); |
| }); |
| |
| test('anything', () { |
| var a = <Object?, Object?>{}; |
| shouldPass(0, anything); |
| shouldPass(null, anything); |
| shouldPass(a, anything); |
| shouldFail(a, isNot(anything), 'Expected: not anything Actual: {}'); |
| }); |
| |
| test('returnsNormally', () { |
| shouldPass(doesNotThrow, returnsNormally); |
| shouldFail( |
| doesThrow, |
| returnsNormally, |
| matches( |
| r'Expected: return normally' |
| r' Actual: <Closure.*>' |
| r' Which: threw StateError:<Bad state: X>', |
| ), |
| ); |
| shouldFail( |
| 'not a function', |
| returnsNormally, |
| contains('not an <Instance of \'Function\'>'), |
| ); |
| }); |
| |
| test('hasLength', () { |
| var a = <Object?, Object?>{}; |
| var b = <Object?>[]; |
| shouldPass(a, hasLength(0)); |
| shouldPass(b, hasLength(0)); |
| shouldPass('a', hasLength(1)); |
| shouldFail( |
| 0, |
| hasLength(0), |
| 'Expected: an object with length of <0> ' |
| 'Actual: <0> ' |
| 'Which: has no length property', |
| ); |
| |
| b.add(0); |
| shouldPass(b, hasLength(1)); |
| shouldFail( |
| b, |
| hasLength(2), |
| 'Expected: an object with length of <2> ' |
| 'Actual: [0] ' |
| 'Which: has length of <1>', |
| ); |
| |
| b.add(0); |
| shouldFail( |
| b, |
| hasLength(1), |
| 'Expected: an object with length of <1> ' |
| 'Actual: [0, 0] ' |
| 'Which: has length of <2>', |
| ); |
| shouldPass(b, hasLength(2)); |
| }); |
| |
| test('scalar type mismatch', () { |
| shouldFail( |
| 'error', |
| equals(5.1), |
| 'Expected: <5.1> ' |
| "Actual: 'error'", |
| ); |
| }); |
| |
| test('nested type mismatch', () { |
| shouldFail( |
| ['error'], |
| equals([5.1]), |
| 'Expected: [5.1] ' |
| "Actual: ['error'] " |
| "Which: at location [0] is 'error' instead of <5.1>", |
| ); |
| }); |
| |
| test('doubly-nested type mismatch', () { |
| shouldFail( |
| [ |
| ['error'], |
| ], |
| equals([ |
| [5.1], |
| ]), |
| 'Expected: [[5.1]] ' |
| "Actual: [['error']] " |
| "Which: at location [0][0] is 'error' instead of <5.1>", |
| ); |
| }); |
| |
| test('doubly nested inequality', () { |
| var actual1 = [ |
| ['foo', 'bar'], |
| ['foo'], |
| 3, |
| <Object?>[], |
| ]; |
| var expected1 = [ |
| ['foo', 'bar'], |
| ['foo'], |
| 4, |
| <Object?>[], |
| ]; |
| var reason1 = |
| "Expected: [['foo', 'bar'], ['foo'], 4, []] " |
| "Actual: [['foo', 'bar'], ['foo'], 3, []] " |
| 'Which: at location [2] is <3> instead of <4>'; |
| |
| var actual2 = [ |
| ['foo', 'barry'], |
| ['foo'], |
| 4, |
| <Object?>[], |
| ]; |
| var expected2 = [ |
| ['foo', 'bar'], |
| ['foo'], |
| 4, |
| <Object?>[], |
| ]; |
| var reason2 = |
| "Expected: [['foo', 'bar'], ['foo'], 4, []] " |
| "Actual: [['foo', 'barry'], ['foo'], 4, []] " |
| "Which: at location [0][1] is 'barry' instead of 'bar'"; |
| |
| var actual3 = [ |
| ['foo', 'bar'], |
| ['foo'], |
| 4, |
| {'foo': 'bar'}, |
| ]; |
| var expected3 = [ |
| ['foo', 'bar'], |
| ['foo'], |
| 4, |
| {'foo': 'barry'}, |
| ]; |
| var reason3 = |
| "Expected: [['foo', 'bar'], ['foo'], 4, {'foo': 'barry'}] " |
| "Actual: [['foo', 'bar'], ['foo'], 4, {'foo': 'bar'}] " |
| "Which: at location [3]['foo'] is 'bar' instead of 'barry'"; |
| |
| shouldFail(actual1, equals(expected1), reason1); |
| shouldFail(actual2, equals(expected2), reason2); |
| shouldFail(actual3, equals(expected3), reason3); |
| }); |
| |
| group('Predicate Matchers', () { |
| test('isInstanceOf', () { |
| shouldFail( |
| 0, |
| predicate((x) => x is String, 'an instance of String'), |
| 'Expected: an instance of String Actual: <0>', |
| ); |
| shouldPass('cow', predicate((x) => x is String, 'an instance of String')); |
| |
| shouldFail( |
| 0, |
| predicate((bool x) => x, 'bool value is true'), |
| endsWith("not an <Instance of 'bool'>"), |
| ); |
| }); |
| }); |
| |
| group('wrapMatcher', () { |
| test('wraps a predicate which allows a nullable argument', () { |
| final matcher = wrapMatcher((_) => true); |
| shouldPass(null, matcher); |
| }); |
| |
| test('wraps a predicate which has a typed argument check', () { |
| final matcher = wrapMatcher((int _) => true); |
| shouldPass(1, matcher); |
| }); |
| }); |
| } |
| |
| class _ThrowingEquals implements Exception { |
| static const message = 'Exception thrown in operator =='; |
| @override |
| bool operator ==(Object other) { |
| throw this; |
| } |
| |
| @override |
| int get hashCode => super.hashCode + 1; |
| |
| @override |
| String toString() => message; |
| } |
