pkg/matcher: reapply 36881,36896 working around Issue 19173

pkg/matcher/test/core_matchers_test.dart

Index: pkg/matcher/test/core_matchers_test.dart
diff --git a/pkg/matcher/test/core_matchers_test.dart b/pkg/matcher/test/core_matchers_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..3f694f31c49a8739236d5b4a319ec217f0a7a786
--- /dev/null
+++ b/pkg/matcher/test/core_matchers_test.dart
@@ -0,0 +1,211 @@
+// 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.
+
+library matcher.core_matchers_test;
+
+import 'package:matcher/matcher.dart';
+import 'package:unittest/unittest.dart' show test, group;
+
+import 'test_utils.dart';
+
+void main() {
+  initUtils();
+
+  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('same', () {
+    var a = new Map();
+    var b = new Map();
+    shouldPass(a, same(a));
+    shouldFail(b, same(a), "Expected: same instance as {} Actual: {}");
+  });
+
+  test('equals', () {
+    var a = new Map();
+    var b = new Map();
+    shouldPass(a, equals(a));
+    shouldPass(a, equals(b));
+  });
+
+  test('anything', () {
+    var a = new Map();
+    shouldPass(0, anything);
+    shouldPass(null, anything);
+    shouldPass(a, anything);
+    shouldFail(a, isNot(anything), "Expected: not anything Actual: {}");
+  });
+
+  test('throws', () {
+    shouldFail(doesNotThrow, throws,
+        matches(
+            r"Expected: throws"
+            r"  Actual: <Closure(: \(\) => dynamic "
+            r"from Function 'doesNotThrow': static\.)?>"
+            r"   Which: did not throw"));
+    shouldPass(doesThrow, throws);
+    shouldFail(true, throws,
+        "Expected: throws"
+        "  Actual: <true>"
+        "   Which: is not a Function or Future");
+  });
+
+  test('throwsA', () {
+    shouldPass(doesThrow, throwsA(equals('X')));
+    shouldFail(doesThrow, throwsA(equals('Y')),
+        matches(
+            r"Expected: throws 'Y'"
+            r"  Actual: <Closure(: \(\) => dynamic "
+            r"from Function 'doesThrow': static\.)?>"
+            r"   Which: threw 'X'"));
+  });
+
+  test('throwsA', () {
+    shouldPass(doesThrow, throwsA(equals('X')));
+    shouldFail(doesThrow, throwsA(equals('Y')),
+        matches("Expected: throws 'Y'.*"
+        "Actual: <Closure.*"
+        "Which: threw 'X'"));
+  });
+
+  test('returnsNormally', () {
+    shouldPass(doesNotThrow, returnsNormally);
+    shouldFail(doesThrow, returnsNormally,
+        matches(
+            r"Expected: return normally"
+            r"  Actual: <Closure(: \(\) => dynamic "
+            r"from Function 'doesThrow': static\.)?>"
+            r"   Which: threw 'X'"));
+  });
+
+
+  test('hasLength', () {
+    var a = new Map();
+    var b = new List();
+    shouldPass(a, hasLength(0));
+    shouldPass(b, hasLength(0));
+    shouldPass('a', hasLength(1));
+    shouldFail(0, hasLength(0), new PrefixMatcher(
+        "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: was 'error' instead of <5.1> at location [0]");
+  });
+
+  test('doubly-nested type mismatch', () {
+    shouldFail([['error']], equals([[5.1]]),
+        "Expected: [[5.1]] "
+        "Actual: [['error']] "
+        "Which: was 'error' instead of <5.1> at location [0][0]");
+  });
+
+  test('doubly nested inequality', () {
+    var actual1 = [['foo', 'bar'], ['foo'], 3, []];
+    var expected1 = [['foo', 'bar'], ['foo'], 4, []];
+    var reason1 = "Expected: [['foo', 'bar'], ['foo'], 4, []] "
+        "Actual: [['foo', 'bar'], ['foo'], 3, []] "
+        "Which: was <3> instead of <4> at location [2]";
+
+    var actual2 = [['foo', 'barry'], ['foo'], 4, []];
+    var expected2 = [['foo', 'bar'], ['foo'], 4, []];
+    var reason2 = "Expected: [['foo', 'bar'], ['foo'], 4, []] "
+        "Actual: [['foo', 'barry'], ['foo'], 4, []] "
+        "Which: was 'barry' instead of 'bar' at location [0][1]";
+
+    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: was 'bar' instead of 'barry' at location [3]['foo']";
+
+    shouldFail(actual1, equals(expected1), reason1);
+    shouldFail(actual2, equals(expected2), reason2);
+    shouldFail(actual3, equals(expected3), reason3);
+  });
+
+  test('isInstanceOf', () {
+    shouldFail(0, new isInstanceOf<String>('String'),
+        "Expected: an instance of String Actual: <0>");
+    shouldPass('cow', new isInstanceOf<String>('String'));
+  });
+
+  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"));
+    });
+  });
+
+  group('exception/error matchers', () {
+    test('throwsCyclicInitializationError', () {
+      expect(() => _Bicycle.foo, throwsCyclicInitializationError);
+    });
+
+    test('throwsConcurrentModificationError', () {
+      expect(() {
+        var a = { 'foo': 'bar' };
+        for (var k in a.keys) {
+          a.remove(k);
+        }
+      }, throwsConcurrentModificationError);
+    });
+
+    test('throwsNullThrownError', () {
+      expect(() => throw null, throwsNullThrownError);
+    });
+  });
+}
+
+class _Bicycle {
+  static final foo = bar();
+
+  static bar() {
+    return foo + 1;
+  }
+}