Index: pkg/shelf/test/string_scanner_test.dart |
diff --git a/pkg/shelf/test/string_scanner_test.dart b/pkg/shelf/test/string_scanner_test.dart |
new file mode 100644 |
index 0000000000000000000000000000000000000000..4d3d259e5802361fc2ff9737345b16e8571afbe9 |
--- /dev/null |
+++ b/pkg/shelf/test/string_scanner_test.dart |
@@ -0,0 +1,266 @@ |
+// 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 shelf.string_scanner_test; |
+ |
+import 'package:shelf/src/string_scanner.dart'; |
+import 'package:unittest/unittest.dart'; |
+ |
+void main() { |
+ group('with an empty string', () { |
+ var scanner; |
+ setUp(() { |
+ scanner = new StringScanner(''); |
+ }); |
+ |
+ test('is done', () { |
+ expect(scanner.isDone, isTrue); |
+ }); |
+ |
+ test('rest is empty', () { |
+ expect(scanner.rest, isEmpty); |
+ }); |
+ |
+ test('lastMatch is null', () { |
+ expect(scanner.lastMatch, isNull); |
+ }); |
+ |
+ test('position is zero', () { |
+ expect(scanner.position, equals(0)); |
+ }); |
+ |
+ test("scan returns false and doesn't change the state", () { |
+ expect(scanner.scan(new RegExp('.')), isFalse); |
+ expect(scanner.lastMatch, isNull); |
+ expect(scanner.position, equals(0)); |
+ }); |
+ |
+ test("expect throws a FormatException and doesn't change the state", () { |
+ expect(() => scanner.expect(new RegExp('.'), 'error'), |
+ throwsFormatException); |
+ expect(scanner.lastMatch, isNull); |
+ expect(scanner.position, equals(0)); |
+ }); |
+ |
+ test("matches returns false and doesn't change the state", () { |
+ expect(scanner.matches(new RegExp('.')), isFalse); |
+ expect(scanner.lastMatch, isNull); |
+ expect(scanner.position, equals(0)); |
+ }); |
+ |
+ test('setting position to 1 throws an ArgumentError', () { |
+ expect(() { |
+ scanner.position = 1; |
+ }, throwsArgumentError); |
+ }); |
+ |
+ test('setting position to -1 throws an ArgumentError', () { |
+ expect(() { |
+ scanner.position = -1; |
+ }, throwsArgumentError); |
+ }); |
+ }); |
+ |
+ group('at the beginning of a string', () { |
+ var scanner; |
+ setUp(() { |
+ scanner = new StringScanner('foo bar'); |
+ }); |
+ |
+ test('is not done', () { |
+ expect(scanner.isDone, isFalse); |
+ }); |
+ |
+ test('rest is the whole string', () { |
+ expect(scanner.rest, equals('foo bar')); |
+ }); |
+ |
+ test('lastMatch is null', () { |
+ expect(scanner.lastMatch, isNull); |
+ }); |
+ |
+ test('position is zero', () { |
+ expect(scanner.position, equals(0)); |
+ }); |
+ |
+ test("a matching scan returns true and changes the state", () { |
+ expect(scanner.scan(new RegExp('f(..)')), isTrue); |
+ expect(scanner.lastMatch[1], equals('oo')); |
+ expect(scanner.position, equals(3)); |
+ expect(scanner.rest, equals(' bar')); |
+ }); |
+ |
+ test("a non-matching scan returns false and sets lastMatch to null", () { |
+ expect(scanner.matches(new RegExp('f(..)')), isTrue); |
+ expect(scanner.lastMatch, isNotNull); |
+ |
+ expect(scanner.scan(new RegExp('b(..)')), isFalse); |
+ expect(scanner.lastMatch, isNull); |
+ expect(scanner.position, equals(0)); |
+ expect(scanner.rest, equals('foo bar')); |
+ }); |
+ |
+ test("a matching expect changes the state", () { |
+ scanner.expect(new RegExp('f(..)'), 'error'); |
+ expect(scanner.lastMatch[1], equals('oo')); |
+ expect(scanner.position, equals(3)); |
+ expect(scanner.rest, equals(' bar')); |
+ }); |
+ |
+ test("a non-matching expect throws a FormatException and sets lastMatch to " |
+ "null", () { |
+ expect(scanner.matches(new RegExp('f(..)')), isTrue); |
+ expect(scanner.lastMatch, isNotNull); |
+ |
+ expect(() => scanner.expect(new RegExp('b(..)'), 'error'), |
+ throwsFormatException); |
+ expect(scanner.lastMatch, isNull); |
+ expect(scanner.position, equals(0)); |
+ expect(scanner.rest, equals('foo bar')); |
+ }); |
+ |
+ test("a matching matches returns true and only changes lastMatch", () { |
+ expect(scanner.matches(new RegExp('f(..)')), isTrue); |
+ expect(scanner.lastMatch[1], equals('oo')); |
+ expect(scanner.position, equals(0)); |
+ expect(scanner.rest, equals('foo bar')); |
+ }); |
+ |
+ test("a non-matching matches returns false and doesn't change the state", |
+ () { |
+ expect(scanner.matches(new RegExp('b(..)')), isFalse); |
+ expect(scanner.lastMatch, isNull); |
+ expect(scanner.position, equals(0)); |
+ expect(scanner.rest, equals('foo bar')); |
+ }); |
+ |
+ test('setting position to 1 moves the cursor forward', () { |
+ scanner.position = 1; |
+ expect(scanner.position, equals(1)); |
+ expect(scanner.rest, equals('oo bar')); |
+ |
+ expect(scanner.scan(new RegExp('oo.')), isTrue); |
+ expect(scanner.lastMatch[0], equals('oo ')); |
+ expect(scanner.position, equals(4)); |
+ expect(scanner.rest, equals('bar')); |
+ }); |
+ |
+ test('setting position beyond the string throws an ArgumentError', () { |
+ expect(() { |
+ scanner.position = 8; |
+ }, throwsArgumentError); |
+ }); |
+ |
+ test('setting position to -1 throws an ArgumentError', () { |
+ expect(() { |
+ scanner.position = -1; |
+ }, throwsArgumentError); |
+ }); |
+ |
+ test('scan accepts any Pattern', () { |
+ expect(scanner.scan('foo'), isTrue); |
+ expect(scanner.lastMatch[0], equals('foo')); |
+ expect(scanner.position, equals(3)); |
+ expect(scanner.rest, equals(' bar')); |
+ }); |
+ |
+ test('scans multiple times', () { |
+ expect(scanner.scan(new RegExp('f(..)')), isTrue); |
+ expect(scanner.lastMatch[1], equals('oo')); |
+ expect(scanner.position, equals(3)); |
+ expect(scanner.rest, equals(' bar')); |
+ |
+ expect(scanner.scan(new RegExp(' b(..)')), isTrue); |
+ expect(scanner.lastMatch[1], equals('ar')); |
+ expect(scanner.position, equals(7)); |
+ expect(scanner.rest, equals('')); |
+ expect(scanner.isDone, isTrue); |
+ }); |
+ }); |
+ |
+ group('at the end of a string', () { |
+ var scanner; |
+ setUp(() { |
+ scanner = new StringScanner('foo bar'); |
+ expect(scanner.scan('foo bar'), isTrue); |
+ }); |
+ |
+ test('is done', () { |
+ expect(scanner.isDone, isTrue); |
+ }); |
+ |
+ test('rest is empty', () { |
+ expect(scanner.rest, isEmpty); |
+ }); |
+ |
+ test('position is zero', () { |
+ expect(scanner.position, equals(7)); |
+ }); |
+ |
+ test("scan returns false and sets lastMatch to null", () { |
+ expect(scanner.scan(new RegExp('.')), isFalse); |
+ expect(scanner.lastMatch, isNull); |
+ expect(scanner.position, equals(7)); |
+ }); |
+ |
+ test("expect throws a FormatException and sets lastMatch to null", () { |
+ expect(() => scanner.expect(new RegExp('.'), 'error'), |
+ throwsFormatException); |
+ expect(scanner.lastMatch, isNull); |
+ expect(scanner.position, equals(7)); |
+ }); |
+ |
+ test("matches returns false sets lastMatch to null", () { |
+ expect(scanner.matches(new RegExp('.')), isFalse); |
+ expect(scanner.lastMatch, isNull); |
+ expect(scanner.position, equals(7)); |
+ }); |
+ |
+ test('setting position to 1 moves the cursor backward', () { |
+ scanner.position = 1; |
+ expect(scanner.position, equals(1)); |
+ expect(scanner.rest, equals('oo bar')); |
+ |
+ expect(scanner.scan(new RegExp('oo.')), isTrue); |
+ expect(scanner.lastMatch[0], equals('oo ')); |
+ expect(scanner.position, equals(4)); |
+ expect(scanner.rest, equals('bar')); |
+ }); |
+ |
+ test('setting position beyond the string throws an ArgumentError', () { |
+ expect(() { |
+ scanner.position = 8; |
+ }, throwsArgumentError); |
+ }); |
+ |
+ test('setting position to -1 throws an ArgumentError', () { |
+ expect(() { |
+ scanner.position = -1; |
+ }, throwsArgumentError); |
+ }); |
+ }); |
+ |
+ group('a scanner constructed with a custom position', () { |
+ test('starts scanning from that position', () { |
+ var scanner = new StringScanner('foo bar', position: 1); |
+ expect(scanner.position, equals(1)); |
+ expect(scanner.rest, equals('oo bar')); |
+ |
+ expect(scanner.scan(new RegExp('oo.')), isTrue); |
+ expect(scanner.lastMatch[0], equals('oo ')); |
+ expect(scanner.position, equals(4)); |
+ expect(scanner.rest, equals('bar')); |
+ }); |
+ |
+ test('throws an ArgumentError if the position is -1', () { |
+ expect(() => new StringScanner('foo bar', position: -1), |
+ throwsArgumentError); |
+ }); |
+ |
+ test('throws an ArgumentError if the position is beyond the string', () { |
+ expect(() => new StringScanner('foo bar', position: 8), |
+ throwsArgumentError); |
+ }); |
+ }); |
+} |