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packages/csslib/test/error_test.dart

Index: packages/csslib/test/error_test.dart
diff --git a/packages/csslib/test/error_test.dart b/packages/csslib/test/error_test.dart
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+++ b/packages/csslib/test/error_test.dart
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+// Copyright (c) 2013, 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 error_test;
+
+import 'package:csslib/src/messages.dart';
+import 'package:test/test.dart';
+
+import 'testing.dart';
+
+/**
+ * Test for unsupported font-weights values of bolder, lighter and inherit.
+ */
+void testUnsupportedFontWeights() {
+  var errors = [];
+
+  // TODO(terry): Need to support bolder.
+  // font-weight value bolder.
+  var input = ".foobar { font-weight: bolder; }";
+  var stylesheet = parseCss(input, errors: errors);
+
+  expect(errors.isEmpty, false);
+  expect(errors[0].toString(), r'''
+error on line 1, column 24: Unknown property value bolder
+.foobar { font-weight: bolder; }
+                       ^^^^^^''');
+  expect(stylesheet != null, true);
+
+  expect(prettyPrint(stylesheet), r'''
+.foobar {
+  font-weight: bolder;
+}''');
+
+  // TODO(terry): Need to support lighter.
+  // font-weight value lighter.
+  input = ".foobar { font-weight: lighter; }";
+  stylesheet = parseCss(input, errors: errors..clear());
+
+  expect(errors.isEmpty, false);
+  expect(errors[0].toString(), r'''
+error on line 1, column 24: Unknown property value lighter
+.foobar { font-weight: lighter; }
+                       ^^^^^^^''');
+  expect(stylesheet != null, true);
+  expect(prettyPrint(stylesheet), r'''
+.foobar {
+  font-weight: lighter;
+}''');
+
+  // TODO(terry): Need to support inherit.
+  // font-weight value inherit.
+  input = ".foobar { font-weight: inherit; }";
+  stylesheet = parseCss(input, errors: errors..clear());
+
+  expect(errors.isEmpty, false);
+  expect(errors[0].toString(), r'''
+error on line 1, column 24: Unknown property value inherit
+.foobar { font-weight: inherit; }
+                       ^^^^^^^''');
+  expect(stylesheet != null, true);
+  expect(prettyPrint(stylesheet), r'''
+.foobar {
+  font-weight: inherit;
+}''');
+}
+
+/**
+ * Test for unsupported line-height values of units other than px, pt and
+ * inherit.
+ */
+void testUnsupportedLineHeights() {
+  var errors = [];
+
+  // line-height value in percentge unit.
+  var input = ".foobar { line-height: 120%; }";
+  var stylesheet = parseCss(input, errors: errors);
+
+  expect(errors.isEmpty, false);
+  expect(errors[0].toString(), r'''
+error on line 1, column 24: Unexpected value for line-height
+.foobar { line-height: 120%; }
+                       ^^^''');
+  expect(stylesheet != null, true);
+  expect(prettyPrint(stylesheet), r'''
+.foobar {
+  line-height: 120%;
+}''');
+
+  // TODO(terry): Need to support all units.
+  // line-height value in cm unit.
+  input = ".foobar { line-height: 20cm; }";
+  stylesheet = parseCss(input, errors: errors..clear());
+
+  expect(errors.isEmpty, false);
+  expect(errors[0].toString(), r'''
+error on line 1, column 24: Unexpected unit for line-height
+.foobar { line-height: 20cm; }
+                       ^^''');
+  expect(stylesheet != null, true);
+  expect(prettyPrint(stylesheet), r'''
+.foobar {
+  line-height: 20cm;
+}''');
+
+  // TODO(terry): Need to support inherit.
+  // line-height value inherit.
+  input = ".foobar { line-height: inherit; }";
+  stylesheet = parseCss(input, errors: errors..clear());
+
+  expect(errors.isEmpty, false);
+  expect(errors[0].toString(), r'''
+error on line 1, column 24: Unknown property value inherit
+.foobar { line-height: inherit; }
+                       ^^^^^^^''');
+  expect(stylesheet != null, true);
+  expect(prettyPrint(stylesheet), r'''
+.foobar {
+  line-height: inherit;
+}''');
+}
+
+/** Test for bad selectors. */
+void testBadSelectors() {
+  var errors = [];
+
+  // Invalid id selector.
+  var input = "# foo { color: #ff00ff; }";
+  var stylesheet = parseCss(input, errors: errors);
+
+  expect(errors.isEmpty, false);
+  expect(errors[0].toString(), r'''
+error on line 1, column 1: Not a valid ID selector expected #id
+# foo { color: #ff00ff; }
+^''');
+  expect(stylesheet != null, true);
+  expect(prettyPrint(stylesheet), r'''
+# foo {
+  color: #f0f;
+}''');
+
+  // Invalid class selector.
+  input = ". foo { color: #ff00ff; }";
+  stylesheet = parseCss(input, errors: errors..clear());
+
+  expect(errors.isEmpty, false);
+  expect(errors[0].toString(), r'''
+error on line 1, column 1: Not a valid class selector expected .className
+. foo { color: #ff00ff; }
+^''');
+  expect(stylesheet != null, true);
+  expect(prettyPrint(stylesheet), r'''
+. foo {
+  color: #f0f;
+}''');
+}
+
+/** Test for bad hex values. */
+void testBadHexValues() {
+  var errors = [];
+
+  // Invalid hex value.
+  var input = ".foobar { color: #AH787; }";
+  var stylesheet = parseCss(input, errors: errors);
+
+  expect(errors.isEmpty, false);
+  expect(errors[0].toString(), r'''
+error on line 1, column 18: Bad hex number
+.foobar { color: #AH787; }
+                 ^^^^^^''');
+  expect(stylesheet != null, true);
+  expect(prettyPrint(stylesheet), r'''
+.foobar {
+  color: #AH787;
+}''');
+
+  // Bad color constant.
+  input = ".foobar { color: redder; }";
+  stylesheet = parseCss(input, errors: errors..clear());
+
+  expect(errors.isEmpty, false);
+  expect(errors[0].toString(), r'''
+error on line 1, column 18: Unknown property value redder
+.foobar { color: redder; }
+                 ^^^^^^''');
+
+  expect(stylesheet != null, true);
+  expect(prettyPrint(stylesheet), r'''
+.foobar {
+  color: redder;
+}''');
+
+  // Bad hex color #<space>ffffff.
+  input = ".foobar { color: # ffffff; }";
+  stylesheet = parseCss(input, errors: errors..clear());
+
+  expect(errors.isEmpty, false);
+  expect(errors[0].toString(), r'''
+error on line 1, column 18: Expected hex number
+.foobar { color: # ffffff; }
+                 ^''');
+
+  expect(stylesheet != null, true);
+  expect(prettyPrint(stylesheet), r'''
+.foobar {
+  color: # ffffff;
+}''');
+
+  // Bad hex color #<space>123fff.
+  input = ".foobar { color: # 123fff; }";
+  stylesheet = parseCss(input, errors: errors..clear());
+
+  expect(errors.isEmpty, false);
+  expect(errors[0].toString(), r'''
+error on line 1, column 18: Expected hex number
+.foobar { color: # 123fff; }
+                 ^''');
+
+  expect(stylesheet != null, true);
+
+  // Formating is off with an extra space.  However, the entire value is bad
+  // and isn't processed anyway.
+  expect(prettyPrint(stylesheet), r'''
+.foobar {
+  color: # 123 fff;
+}''');
+}
+
+void testBadUnicode() {
+  var errors = [];
+  final String input = '''
+@font-face {
+  src: url(fonts/BBCBengali.ttf) format("opentype");
+  unicode-range: U+400-200;
+}''';
+
+  parseCss(input, errors: errors);
+
+  expect(errors.isEmpty, false);
+  expect(errors[0].toString(),
+      'error on line 3, column 20: unicode first range can not be greater than '
+      'last\n'
+      '  unicode-range: U+400-200;\n'
+      '                   ^^^^^^^');
+
+  final String input2 = '''
+@font-face {
+  src: url(fonts/BBCBengali.ttf) format("opentype");
+  unicode-range: U+12FFFF;
+}''';
+
+  parseCss(input2, errors: errors..clear());
+
+  expect(errors.isEmpty, false);
+  expect(errors[0].toString(),
+      'error on line 3, column 20: unicode range must be less than 10FFFF\n'
+      '  unicode-range: U+12FFFF;\n'
+      '                   ^^^^^^');
+}
+
+void testBadNesting() {
+  var errors = [];
+
+  // Test for bad declaration in a nested rule.
+  final String input = '''
+div {
+  width: 20px;
+  span + ul { color: blue; }
+  span + ul > #aaaa {
+    color: #ffghghgh;
+  }
+  background-color: red;
+}
+''';
+
+  parseCss(input, errors: errors);
+  expect(errors.length, 1);
+  var errorMessage = messages.messages[0];
+  expect(errorMessage.message, contains('Bad hex number'));
+  expect(errorMessage.span, isNotNull);
+  expect(errorMessage.span.start.line, 4);
+  expect(errorMessage.span.start.column, 11);
+  expect(errorMessage.span.text, '#ffghghgh');
+
+  // Test for bad selector syntax.
+  final String input2 = '''
+div {
+  span + ul #aaaa > (3333)  {
+    color: #ffghghgh;
+  }
+}
+''';
+  parseCss(input2, errors: errors..clear());
+  expect(errors.length, 4);
+  errorMessage = messages.messages[0];
+  expect(errorMessage.message, contains(':, but found +'));
+  expect(errorMessage.span, isNotNull);
+  expect(errorMessage.span.start.line, 1);
+  expect(errorMessage.span.start.column, 7);
+  expect(errorMessage.span.text, '+');
+
+  errorMessage = messages.messages[1];
+  expect(errorMessage.message, contains('Unknown property value ul'));
+  expect(errorMessage.span, isNotNull);
+  expect(errorMessage.span.start.line, 1);
+  expect(errorMessage.span.start.column, 9);
+  expect(errorMessage.span.text, 'ul');
+
+  errorMessage = messages.messages[2];
+  expect(errorMessage.message, contains('expected }, but found >'));
+  expect(errorMessage.span, isNotNull);
+  expect(errorMessage.span.start.line, 1);
+  expect(errorMessage.span.start.column, 18);
+  expect(errorMessage.span.text, '>');
+
+  errorMessage = messages.messages[3];
+  expect(errorMessage.message, contains('premature end of file unknown CSS'));
+  expect(errorMessage.span, isNotNull);
+  expect(errorMessage.span.start.line, 1);
+  expect(errorMessage.span.start.column, 20);
+  expect(errorMessage.span.text, '(');
+
+  // Test for missing close braces and bad declaration.
+  final String input3 = '''
+div {
+  span {
+    color: #green;
+}
+''';
+  parseCss(input3, errors: errors..clear());
+  expect(errors.length, 2);
+  errorMessage = messages.messages[0];
+  expect(errorMessage.message, contains('Bad hex number'));
+  expect(errorMessage.span, isNotNull);
+  expect(errorMessage.span.start.line, 2);
+  expect(errorMessage.span.start.column, 11);
+  expect(errorMessage.span.text, '#green');
+
+  errorMessage = messages.messages[1];
+  expect(errorMessage.message, contains('expected }, but found end of file'));
+  expect(errorMessage.span, isNotNull);
+  expect(errorMessage.span.start.line, 3);
+  expect(errorMessage.span.start.column, 1);
+  expect(errorMessage.span.text, '\n');
+}
+
+main() {
+  test('font-weight value errors', testUnsupportedFontWeights);
+  test('line-height value errors', testUnsupportedLineHeights);
+  test('bad selectors', testBadSelectors);
+  test('bad Hex values', testBadHexValues);
+  test('bad unicode ranges', testBadUnicode);
+  test('nested rules', testBadNesting);
+}