| // 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. |
| |
| import 'package:unittest/unittest.dart'; |
| import 'package:source_span/source_span.dart'; |
| |
| main() { |
| var location; |
| setUp(() { |
| location = new SourceLocation(15, |
| line: 2, column: 6, sourceUrl: "foo.dart"); |
| }); |
| |
| group('errors', () { |
| group('for new SourceLocation()', () { |
| test('offset may not be negative', () { |
| expect(() => new SourceLocation(-1), throwsRangeError); |
| }); |
| |
| test('line may not be negative', () { |
| expect(() => new SourceLocation(0, line: -1), throwsRangeError); |
| }); |
| |
| test('column may not be negative', () { |
| expect(() => new SourceLocation(0, column: -1), throwsRangeError); |
| }); |
| }); |
| |
| test('for distance() source URLs must match', () { |
| expect(() => location.distance(new SourceLocation(0)), |
| throwsArgumentError); |
| }); |
| |
| test('for compareTo() source URLs must match', () { |
| expect(() => location.compareTo(new SourceLocation(0)), |
| throwsArgumentError); |
| }); |
| }); |
| |
| test('fields work correctly', () { |
| expect(location.sourceUrl, equals(Uri.parse("foo.dart"))); |
| expect(location.offset, equals(15)); |
| expect(location.line, equals(2)); |
| expect(location.column, equals(6)); |
| }); |
| |
| group('toolString', () { |
| test('returns a computer-readable representation', () { |
| expect(location.toolString, equals('foo.dart:3:7')); |
| }); |
| |
| test('gracefully handles a missing source URL', () { |
| var location = new SourceLocation(15, line: 2, column: 6); |
| expect(location.toolString, equals('unknown source:3:7')); |
| }); |
| }); |
| |
| test("distance returns the absolute distance between locations", () { |
| var other = new SourceLocation(10, sourceUrl: "foo.dart"); |
| expect(location.distance(other), equals(5)); |
| expect(other.distance(location), equals(5)); |
| }); |
| |
| test("pointSpan returns an empty span at location", () { |
| var span = location.pointSpan(); |
| expect(span.start, equals(location)); |
| expect(span.end, equals(location)); |
| expect(span.text, isEmpty); |
| }); |
| |
| group("compareTo()", () { |
| test("sorts by offset", () { |
| var other = new SourceLocation(20, sourceUrl: "foo.dart"); |
| expect(location.compareTo(other), lessThan(0)); |
| expect(other.compareTo(location), greaterThan(0)); |
| }); |
| |
| test("considers equal locations equal", () { |
| expect(location.compareTo(location), equals(0)); |
| }); |
| }); |
| |
| |
| group("equality", () { |
| test("two locations with the same offset and source are equal", () { |
| var other = new SourceLocation(15, sourceUrl: "foo.dart"); |
| expect(location, equals(other)); |
| }); |
| |
| test("a different offset isn't equal", () { |
| var other = new SourceLocation(10, sourceUrl: "foo.dart"); |
| expect(location, isNot(equals(other))); |
| }); |
| |
| test("a different source isn't equal", () { |
| var other = new SourceLocation(15, sourceUrl: "bar.dart"); |
| expect(location, isNot(equals(other))); |
| }); |
| }); |
| } |