Roll Observatory packages and add a roll script

packages/matcher/test/string_matchers_test.dart

+// 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.string_matchers_test;
+
+import 'package:matcher/matcher.dart';
+import 'package:test/test.dart' show test, group, expect;
+
+import 'test_utils.dart';
+
+void main() {
+  test('Reports mismatches in whitespace and escape sequences', () {
+    shouldFail('before\nafter', equals('before\\nafter'),
+        contains('Differ at offset 7'));
+  });
+
+  test('collapseWhitespace', () {
+    var source = '\t\r\n hello\t\r\n world\r\t \n';
+    expect(collapseWhitespace(source), 'hello world');
+  });
+
+  test('isEmpty', () {
+    shouldPass('', isEmpty);
+    shouldFail(null, isEmpty, startsWith("Expected: empty  Actual: <null>"));
+    shouldFail(0, isEmpty, startsWith("Expected: empty  Actual: <0>"));
+    shouldFail('a', isEmpty, startsWith("Expected: empty  Actual: 'a'"));
+  });
+
+  // Regression test for: https://code.google.com/p/dart/issues/detail?id=21562
+  test('isNot(isEmpty)', () {
+    shouldPass('a', isNot(isEmpty));
+    shouldFail('', isNot(isEmpty), 'Expected: not empty Actual: \'\'');
+    shouldFail(null, isNot(isEmpty),
+        startsWith('Expected: not empty  Actual: <null>'));
+  });
+
+  test('isNotEmpty', () {
+    shouldFail('', isNotEmpty, startsWith("Expected: non-empty  Actual: ''"));
+    shouldFail(
+        null, isNotEmpty, startsWith("Expected: non-empty  Actual: <null>"));
+    shouldFail(0, isNotEmpty, startsWith("Expected: non-empty  Actual: <0>"));
+    shouldPass('a', isNotEmpty);
+  });
+
+  test('equalsIgnoringCase', () {
+    shouldPass('hello', equalsIgnoringCase('HELLO'));
+    shouldFail('hi', equalsIgnoringCase('HELLO'),
+        "Expected: 'HELLO' ignoring case Actual: 'hi'");
+  });
+
+  test('equalsIgnoringWhitespace', () {
+    shouldPass(' hello   world  ', equalsIgnoringWhitespace('hello world'));
+    shouldFail(' helloworld  ', equalsIgnoringWhitespace('hello world'),
+        "Expected: 'hello world' ignoring whitespace "
+        "Actual: ' helloworld ' "
+        "Which: is 'helloworld' with whitespace compressed");
+  });
+
+  test('startsWith', () {
+    shouldPass('hello', startsWith(''));
+    shouldPass('hello', startsWith('hell'));
+    shouldPass('hello', startsWith('hello'));
+    shouldFail('hello', startsWith('hello '),
+        "Expected: a string starting with 'hello ' "
+        "Actual: 'hello'");
+  });
+
+  test('endsWith', () {
+    shouldPass('hello', endsWith(''));
+    shouldPass('hello', endsWith('lo'));
+    shouldPass('hello', endsWith('hello'));
+    shouldFail('hello', endsWith(' hello'),
+        "Expected: a string ending with ' hello' "
+        "Actual: 'hello'");
+  });
+
+  test('contains', () {
+    shouldPass('hello', contains(''));
+    shouldPass('hello', contains('h'));
+    shouldPass('hello', contains('o'));
+    shouldPass('hello', contains('hell'));
+    shouldPass('hello', contains('hello'));
+    shouldFail(
+        'hello', contains(' '), "Expected: contains ' ' Actual: 'hello'");
+  });
+
+  test('stringContainsInOrder', () {
+    shouldPass('goodbye cruel world', stringContainsInOrder(['']));
+    shouldPass('goodbye cruel world', stringContainsInOrder(['goodbye']));
+    shouldPass('goodbye cruel world', stringContainsInOrder(['cruel']));
+    shouldPass('goodbye cruel world', stringContainsInOrder(['world']));
+    shouldPass(
+        'goodbye cruel world', stringContainsInOrder(['good', 'bye', 'world']));
+    shouldPass(
+        'goodbye cruel world', stringContainsInOrder(['goodbye', 'cruel']));
+    shouldPass(
+        'goodbye cruel world', stringContainsInOrder(['cruel', 'world']));
+    shouldPass('goodbye cruel world',
+        stringContainsInOrder(['goodbye', 'cruel', 'world']));
+    shouldFail('goodbye cruel world',
+        stringContainsInOrder(['goo', 'cruel', 'bye']),
+        "Expected: a string containing 'goo', 'cruel', 'bye' in order "
+        "Actual: 'goodbye cruel world'");
+  });
+
+  test('matches', () {
+    shouldPass('c0d', matches('[a-z][0-9][a-z]'));
+    shouldPass('c0d', matches(new RegExp('[a-z][0-9][a-z]')));
+    shouldFail('cOd', matches('[a-z][0-9][a-z]'),
+        "Expected: match '[a-z][0-9][a-z]' Actual: 'cOd'");
+  });
+}