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packages/csslib/test/nested_test.dart

Index: packages/csslib/test/nested_test.dart
diff --git a/packages/csslib/test/nested_test.dart b/packages/csslib/test/nested_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 nested_test;
+
+import 'package:test/test.dart';
+
+import 'testing.dart';
+
+compileAndValidate(String input, String generated) {
+  var errors = [];
+  var stylesheet = compileCss(input, errors: errors, opts: simpleOptions);
+  expect(stylesheet != null, true);
+  expect(errors.isEmpty, true, reason: errors.toString());
+  expect(prettyPrint(stylesheet), generated);
+}
+
+selectorVariations() {
+  final input1 = r'''html { color: red; }''';
+  final generated1 = r'''html {
+  color: #f00;
+}''';
+  compileAndValidate(input1, generated1);
+
+  final input2 = r'''button { span { height: 200 } }''';
+  final generated2 = r'''button {
+}
+button span {
+  height: 200;
+}''';
+  compileAndValidate(input2, generated2);
+
+  final input3 = r'''div { color: red; } button { span { height: 200 } }''';
+  final generated3 = r'''div {
+  color: #f00;
+}
+button {
+}
+button span {
+  height: 200;
+}''';
+  compileAndValidate(input3, generated3);
+
+  final input4 = r'''#header { color: red; h1 { font-size: 26px; } }''';
+  final generated4 = r'''#header {
+  color: #f00;
+}
+#header h1 {
+  font-size: 26px;
+}''';
+  compileAndValidate(input4, generated4);
+
+  final input5 = r'''
+#header {
+  color: red;
+  h1 { font-size: 26px; }
+  background-color: blue;
+}''';
+  final generated5 = r'''#header {
+  color: #f00;
+  background-color: #00f;
+}
+#header h1 {
+  font-size: 26px;
+}''';
+  compileAndValidate(input5, generated5);
+
+  final input6 = r'''html { body {color: red; }}''';
+  final generated6 = r'''html {
+}
+html body {
+  color: #f00;
+}''';
+  compileAndValidate(input6, generated6);
+
+  final input7 = r'''html body {color: red; }''';
+  final generated7 = r'''html body {
+  color: #f00;
+}''';
+  compileAndValidate(input7, generated7);
+
+  final input8 = r'''
+html, body { color: red; }
+button { height: 200 }
+body { width: 300px; }''';
+  final generated8 = r'''html, body {
+  color: #f00;
+}
+button {
+  height: 200;
+}
+body {
+  width: 300px;
+}''';
+  compileAndValidate(input8, generated8);
+
+  final input9 = '''
+html, body {
+  color: red;
+  button { height: 200 }
+  div { width: 300px; }
+}''';
+  final generated9 = r'''html, body {
+  color: #f00;
+}
+html button, body button {
+  height: 200;
+}
+html div, body div {
+  width: 300px;
+}''';
+  compileAndValidate(input9, generated9);
+
+  final input10 = '''
+html {
+  color: red;
+  button, div { height: 200 }
+  body { width: 300px; }
+}''';
+  final generated10 = r'''html {
+  color: #f00;
+}
+html button, html div {
+  height: 200;
+}
+html body {
+  width: 300px;
+}''';
+  compileAndValidate(input10, generated10);
+
+  final input11 = '''
+html, body {
+  color: red;
+  button, div { height: 200 }
+  table { width: 300px; }
+}''';
+  final generated11 = r'''html, body {
+  color: #f00;
+}
+html button, body button, html div, body div {
+  height: 200;
+}
+html table, body table {
+  width: 300px;
+}''';
+  compileAndValidate(input11, generated11);
+
+  final input12 = '''
+html, body {
+  color: red;
+  button, div {
+    span, a, ul { height: 200 }
+  }
+  table { width: 300px; }
+}''';
+  final generated12 = r'''html, body {
+  color: #f00;
+}
+'''
+      'html button span, body button span, html div span, body div span, '
+      'html button a, body button a, html div a, body div a, html button ul, '
+      r'''body button ul, html div ul, body div ul {
+  height: 200;
+}
+html table, body table {
+  width: 300px;
+}''';
+  compileAndValidate(input12, generated12);
+
+  final input13 = r'''
+#header {
+  div {
+  width: 100px;
+  a { height: 200px; }
+  }
+  color: blue;
+}
+span { color: #1f1f1f; }
+''';
+  final generated13 = r'''#header {
+  color: #00f;
+}
+#header div {
+  width: 100px;
+}
+#header div a {
+  height: 200px;
+}
+span {
+  color: #1f1f1f;
+}''';
+  compileAndValidate(input13, generated13);
+}
+
+void simpleNest() {
+  final input = '''
+div span { color: green; }
+#header {
+  color: red;
+  h1 {
+    font-size: 26px;
+    font-weight: bold;
+  }
+  p {
+    font-size: 12px;
+    a {
+      text-decoration: none;
+    }
+  }
+  background-color: blue;
+}
+div > span[attr="foo"] { color: yellow; }
+''';
+
+  final generated = r'''div span {
+  color: #008000;
+}
+#header {
+  color: #f00;
+  background-color: #00f;
+}
+#header h1 {
+  font-size: 26px;
+  font-weight: bold;
+}
+#header p {
+  font-size: 12px;
+}
+#header p a {
+  text-decoration: none;
+}
+div > span[attr="foo"] {
+  color: #ff0;
+}''';
+  compileAndValidate(input, generated);
+}
+
+void complexNest() {
+  final input = '''
+@font-face  { font-family: arial; }
+div { color: #f0f0f0; }
+#header + div {
+  color: url(abc.png);
+  *[attr="bar"] {
+    font-size: 26px;
+    font-weight: bold;
+  }
+  p~ul {
+    font-size: 12px;
+    :not(p) {
+      text-decoration: none;
+      div > span[attr="foo"] { color: yellow; }
+    }
+  }
+  background-color: blue;
+  span {
+    color: red;
+    .one { color: blue; }
+    .two { color: green; }
+    .three { color: yellow; }
+    .four {
+       .four-1 { background-color: #00000f; }
+       .four-2 { background-color: #0000ff; }
+       .four-3 { background-color: #000fff; }
+       .four-4 {
+         height: 44px;
+         .four-4-1 { height: 10px; }
+         .four-4-2 { height: 20px; }
+         .four-4-3 { height: 30px; }
+         width: 44px;
+       }
+    }
+  }
+}
+span { color: #1f1f2f; }
+''';
+
+  final generated = r'''@font-face  {
+  font-family: arial;
+}
+div {
+  color: #f0f0f0;
+}
+#header + div {
+  color: url("abc.png");
+  background-color: #00f;
+}
+#header + div *[attr="bar"] {
+  font-size: 26px;
+  font-weight: bold;
+}
+#header + div p ~ ul {
+  font-size: 12px;
+}
+#header + div p ~ ul :not(p) {
+  text-decoration: none;
+}
+#header + div p ~ ul :not(p) div > span[attr="foo"] {
+  color: #ff0;
+}
+#header + div span {
+  color: #f00;
+}
+#header + div span .one {
+  color: #00f;
+}
+#header + div span .two {
+  color: #008000;
+}
+#header + div span .three {
+  color: #ff0;
+}
+#header + div span .four .four-1 {
+  background-color: #00000f;
+}
+#header + div span .four .four-2 {
+  background-color: #00f;
+}
+#header + div span .four .four-3 {
+  background-color: #000fff;
+}
+#header + div span .four .four-4 {
+  height: 44px;
+  width: 44px;
+}
+#header + div span .four .four-4 .four-4-1 {
+  height: 10px;
+}
+#header + div span .four .four-4 .four-4-2 {
+  height: 20px;
+}
+#header + div span .four .four-4 .four-4-3 {
+  height: 30px;
+}
+span {
+  color: #1f1f2f;
+}''';
+
+  compileAndValidate(input, generated);
+}
+
+void mediaNesting() {
+  final input = r'''
+@media screen and (-webkit-min-device-pixel-ratio:0) {
+  #toggle-all {
+    image: url(test.jpb);
+    div, table {
+      background: none;
+      a { width: 100px; }
+    }
+    color: red;
+  }
+}
+''';
+  final generated = r'''@media screen AND (-webkit-min-device-pixel-ratio:0) {
+#toggle-all {
+  image: url("test.jpb");
+  color: #f00;
+}
+#toggle-all div, #toggle-all table {
+  background: none;
+}
+#toggle-all div a, #toggle-all table a {
+  width: 100px;
+}
+}''';
+
+  compileAndValidate(input, generated);
+}
+
+void simpleThis() {
+  final input = '''#header {
+  h1 {
+    font-size: 26px;
+    font-weight: bold;
+  }
+  p { font-size: 12px;
+    a { text-decoration: none;
+      &:hover { border-width: 1px }
+    }
+  }
+}
+''';
+
+  final generated = r'''#header {
+}
+#header h1 {
+  font-size: 26px;
+  font-weight: bold;
+}
+#header p {
+  font-size: 12px;
+}
+#header p a {
+  text-decoration: none;
+}
+#header p a:hover {
+  border-width: 1px;
+}''';
+
+  compileAndValidate(input, generated);
+}
+
+void complexThis() {
+  final input1 = r'''
+.light {
+  .leftCol {
+    .textLink {
+      color: fooL1;
+      &:hover { color: barL1;}
+    }
+    .picLink {
+      background-image: url(/fooL1.jpg);
+      &:hover { background-image: url(/barL1.jpg);}
+    }
+    .textWithIconLink {
+      color: fooL2;
+      background-image: url(/fooL2.jpg);
+      &:hover { color: barL2; background-image: url(/barL2.jpg);}
+    }
+  }
+}''';
+
+  final generated1 = r'''.light {
+}
+.light .leftCol .textLink {
+  color: fooL1;
+}
+.light .leftCol .textLink:hover {
+  color: barL1;
+}
+.light .leftCol .picLink {
+  background-image: url("/fooL1.jpg");
+}
+.light .leftCol .picLink:hover {
+  background-image: url("/barL1.jpg");
+}
+.light .leftCol .textWithIconLink {
+  color: fooL2;
+  background-image: url("/fooL2.jpg");
+}
+.light .leftCol .textWithIconLink:hover {
+  color: barL2;
+  background-image: url("/barL2.jpg");
+}''';
+
+  compileAndValidate(input1, generated1);
+
+  final input2 = r'''
+.textLink {
+  .light .leftCol & {
+    color: fooL1;
+    &:hover { color: barL1; }
+  }
+  .light .rightCol & {
+    color: fooL3;
+    &:hover { color: barL3; }
+  }
+}''';
+
+  final generated2 = r'''
+.textLink {
+}
+.light .leftCol .textLink {
+  color: fooL1;
+}
+.light .leftCol .textLink:hover {
+  color: barL1;
+}
+.light .rightCol .textLink {
+  color: fooL3;
+}
+.light .rightCol .textLink:hover {
+  color: barL3;
+}''';
+
+  compileAndValidate(input2, generated2);
+}
+
+variationsThis() {
+  final input1 = r'''
+.textLink {
+  a {
+    light .leftCol & {
+      color: red;
+    }
+  }
+}''';
+  final generated1 = r'''.textLink {
+}
+light .leftCol .textLink a {
+  color: #f00;
+}''';
+
+  compileAndValidate(input1, generated1);
+
+  final input2 = r'''.textLink {
+  a {
+    & light .leftCol & {
+      color: red;
+    }
+  }
+}''';
+  final generated2 = r'''.textLink {
+}
+.textLink a light .leftCol .textLink a {
+  color: #f00;
+}''';
+  compileAndValidate(input2, generated2);
+
+  final input3 = r'''
+.textLink {
+  a {
+    & light .leftCol { color: red; }
+  }
+}''';
+  final generated3 = r'''.textLink {
+}
+.textLink a light .leftCol {
+  color: #f00;
+}''';
+  compileAndValidate(input3, generated3);
+
+  final input4 = r'''
+.textLink {
+  a {
+    & light .leftCol { color: red; }
+    &:hover { width: 100px; }
+  }
+}''';
+  final generated4 = r'''.textLink {
+}
+.textLink a light .leftCol {
+  color: #f00;
+}
+.textLink a:hover {
+  width: 100px;
+}''';
+  compileAndValidate(input4, generated4);
+
+  final input5 = r'''.textLink { a { &:hover { color: red; } } }''';
+  final generated5 = r'''.textLink {
+}
+.textLink a:hover {
+  color: #f00;
+}''';
+
+  compileAndValidate(input5, generated5);
+
+  final input6 = r'''.textLink { &:hover { color: red; } }''';
+  final generated6 = r'''.textLink {
+}
+.textLink:hover {
+  color: #f00;
+}''';
+  compileAndValidate(input6, generated6);
+
+  final input7 = r'''.textLink { a { & + & { color: red; } } }''';
+  final generated7 = r'''.textLink {
+}
+.textLink a + .textLink a {
+  color: #f00;
+}''';
+  compileAndValidate(input7, generated7);
+
+  final input8 = r'''.textLink { a { & { color: red; } } }''';
+  final generated8 = r'''.textLink {
+}
+.textLink a {
+  color: #f00;
+}''';
+  compileAndValidate(input8, generated8);
+
+  final input9 = r'''.textLink { a { & ~ & { color: red; } } }''';
+  final generated9 = r'''.textLink {
+}
+.textLink a ~ .textLink a {
+  color: #f00;
+}''';
+  compileAndValidate(input9, generated9);
+
+  final input10 = r'''.textLink { a { & & { color: red; } } }''';
+  final generated10 = r'''.textLink {
+}
+.textLink a .textLink a {
+  color: #f00;
+}''';
+  compileAndValidate(input10, generated10);
+}
+
+thisCombinator() {
+  var input = r'''
+.btn {
+  color: red;
+}
+.btn + .btn {
+  margin-left: 5px;
+}
+input.second {
+  & + label {
+    color: blue;
+  }
+}
+''';
+
+  var generated = r'''.btn {
+  color: #f00;
+}
+.btn + .btn {
+  margin-left: 5px;
+}
+input.second {
+}
+input.second + label {
+  color: #00f;
+}''';
+
+  compileAndValidate(input, generated);
+}
+
+main() {
+  test('Selector and Nested Variations', selectorVariations);
+  test('Simple nesting', simpleNest);
+  test('Complex nesting', complexNest);
+  test('@media nesting', mediaNesting);
+  test('Simple &', simpleThis);
+  test("Variations &", variationsThis);
+  test('Complex &', complexThis);
+  test('& with + selector', thisCombinator);
+}