| // Copyright (c) 2014, 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 string_scanner.error_format_test; |
| |
| import 'package:string_scanner/string_scanner.dart'; |
| import 'package:unittest/unittest.dart'; |
| |
| void main() { |
| test('points to the first unconsumed character', () { |
| var scanner = new StringScanner('foo bar baz'); |
| scanner.expect('foo '); |
| expect(() => scanner.expect('foo'), throwsFormattedError(''' |
| Expected "foo" on line 1, column 5. |
| foo bar baz |
| ^''')); |
| }); |
| |
| test('prints the correct line', () { |
| var scanner = new StringScanner('foo bar baz\ndo re mi\nearth fire water'); |
| scanner.expect('foo bar baz\ndo '); |
| expect(() => scanner.expect('foo'), throwsFormattedError(''' |
| Expected "foo" on line 2, column 4. |
| do re mi |
| ^''')); |
| }); |
| |
| test('handles the beginning of the string correctly', () { |
| var scanner = new StringScanner('foo bar baz'); |
| expect(() => scanner.expect('zap'), throwsFormattedError(''' |
| Expected "zap" on line 1, column 1. |
| foo bar baz |
| ^''')); |
| }); |
| |
| test('handles the end of the string correctly', () { |
| var scanner = new StringScanner('foo bar baz'); |
| scanner.expect('foo bar baz'); |
| expect(() => scanner.expect('bang'), throwsFormattedError(''' |
| Expected "bang" on line 1, column 12. |
| foo bar baz |
| ^''')); |
| }); |
| |
| test('handles an empty string correctly', () { |
| expect(() => new StringScanner('').expect('foo'), throwsFormattedError(''' |
| Expected "foo" on line 1, column 1. |
| |
| ^''')); |
| }); |
| |
| group("expected name", () { |
| test("uses the provided name", () { |
| expect(() => new StringScanner('').expect('foo bar', name: 'zap'), |
| throwsFormattedError(''' |
| Expected zap on line 1, column 1. |
| |
| ^''')); |
| }); |
| |
| test("escapes string quotes", () { |
| expect(() => new StringScanner('').expect('foo"bar'), |
| throwsFormattedError(''' |
| Expected "foo\\"bar" on line 1, column 1. |
| |
| ^''')); |
| }); |
| |
| test("escapes string backslashes", () { |
| expect(() => new StringScanner('').expect('foo\\bar'), |
| throwsFormattedError(''' |
| Expected "foo\\\\bar" on line 1, column 1. |
| |
| ^''')); |
| }); |
| |
| test("prints PERL-style regexps", () { |
| expect(() => new StringScanner('').expect(new RegExp(r'foo')), |
| throwsFormattedError(''' |
| Expected /foo/ on line 1, column 1. |
| |
| ^''')); |
| }); |
| |
| test("escape regexp forward slashes", () { |
| expect(() => new StringScanner('').expect(new RegExp(r'foo/bar')), |
| throwsFormattedError(''' |
| Expected /foo\\/bar/ on line 1, column 1. |
| |
| ^''')); |
| }); |
| |
| test("does not escape regexp backslashes", () { |
| expect(() => new StringScanner('').expect(new RegExp(r'foo\bar')), |
| throwsFormattedError(''' |
| Expected /foo\\bar/ on line 1, column 1. |
| |
| ^''')); |
| }); |
| }); |
| } |
| |
| Matcher throwsFormattedError(String format) { |
| return throwsA(predicate((error) { |
| expect(error, isFormatException); |
| expect(error.message, equals(format)); |
| return true; |
| })); |
| } |