| // 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. |
| |
| import 'package:matcher/src/util.dart'; |
| import 'package:test/test.dart'; |
| |
| void main() { |
| group('escaping should work with', () { |
| _testEscaping('no escaped chars', 'Hello, world!', 'Hello, world!'); |
| _testEscaping('newline', '\n', r'\n'); |
| _testEscaping('carriage return', '\r', r'\r'); |
| _testEscaping('form feed', '\f', r'\f'); |
| _testEscaping('backspace', '\b', r'\b'); |
| _testEscaping('tab', '\t', r'\t'); |
| _testEscaping('vertical tab', '\v', r'\v'); |
| _testEscaping('null byte', '\x00', r'\x00'); |
| _testEscaping('ASCII control character', '\x11', r'\x11'); |
| _testEscaping('delete', '\x7F', r'\x7F'); |
| _testEscaping('escape combos', r'\n', r'\\n'); |
| _testEscaping( |
| 'All characters', |
| 'A new line\nA charriage return\rA form feed\fA backspace\b' |
| 'A tab\tA vertical tab\vA slash\\A null byte\x00A control char\x1D' |
| 'A delete\x7F', |
| r'A new line\nA charriage return\rA form feed\fA backspace\b' |
| r'A tab\tA vertical tab\vA slash\\A null byte\x00A control char\x1D' |
| r'A delete\x7F'); |
| }); |
| |
| group('unequal strings remain unequal when escaped', () { |
| _testUnequalStrings('with a newline', '\n', r'\n'); |
| _testUnequalStrings('with slash literals', '\\', r'\\'); |
| }); |
| } |
| |
| /// Creates a [test] with name [name] that verifies [source] escapes to value |
| /// [target]. |
| void _testEscaping(String name, String source, String target) { |
| test(name, () { |
| var escaped = escape(source); |
| expect(escaped == target, isTrue, |
| reason: "Expected escaped value: $target\n" |
| " Actual escaped value: $escaped"); |
| }); |
| } |
| |
| /// Creates a [test] with name [name] that ensures two different [String] values |
| /// [s1] and [s2] remain unequal when escaped. |
| void _testUnequalStrings(String name, String s1, String s2) { |
| test(name, () { |
| // Explicitly not using the equals matcher |
| expect(s1 != s2, isTrue, reason: 'The source values should be unequal'); |
| |
| var escapedS1 = escape(s1); |
| var escapedS2 = escape(s2); |
| |
| // Explicitly not using the equals matcher |
| expect(escapedS1 != escapedS2, isTrue, |
| reason: 'Unequal strings, when escaped, should remain unequal.'); |
| }); |
| } |