Added .scss transform

pkg/csslib/test/transform/simple_test.dart

+// 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 csslib.test.transform.simple_test;
+
+import 'package:csslib/transform.dart';
+import 'package:unittest/compact_vm_config.dart';
+
+import 'common.dart';
+
+void testPseudo() {
+  testSass('Pseudo', r"""
+html:lang(fr-ca) { quotes: '" ' ' "' }
+zoom: { }
+
+a:link { color: red }
+:link  { color: blue }
+
+a:focus { background: yellow }
+a:focus:hover { background: white }
+
+p.special:first-letter {color: #ffd800}
+
+p:not(#example){
+  background-color: yellow;
+}
+
+input:not([DISABLED]){
+  background-color: yellow;
+}
+
+html|*:not(:link):not(:visited) {
+  border: 1px solid black;
+}
+
+*:not(FOO) {
+  height: 20px;
+}
+
+*|*:not(*) {
+  color: orange;
+}
+
+*|*:not(:hover) {
+  color: magenta;
+}
+
+p:nth-child(3n-3) { }
+
+div:nth-child(2n) { color : red; }
+""", r"""html:lang(fr-ca) {
+  quotes: "\" " " \"";
+}
+zoom {
+}
+a:link {
+  color: #f00;
+}
+:link {
+  color: #00f;
+}
+a:focus {
+  background: #ff0;
+}
+a:focus:hover {
+  background: #fff;
+}
+p.special:first-letter {
+  color: #ffd800;
+}
+p:not(#example) {
+  background-color: #ff0;
+}
+input:not([DISABLED]) {
+  background-color: #ff0;
+}
+html|*:not(:link):not(:visited) {
+  border: 1px solid #000;
+}
+*:not(FOO) {
+  height: 20px;
+}
+*|*:not(*) {
+  color: #ffa500;
+}
+*|*:not(:hover) {
+  color: #f0f;
+}
+p:nth-child(3n-3) {
+}
+div:nth-child(2n) {
+  color: #f00;
+}""");
+}
+
+void testHost() {
+  var input = r"""
+@host {
+  :scope {
+    white-space: nowrap;
+    overflow-style: marquee-line;
+    overflow-x: marquee;
+  }
+  * { color: red; }
+  *:hover { font-weight: bold; }
+  :nth-child(odd) { color: blue; }
+};""";
+var expected = r"""
+@host {
+:scope {
+  white-space: nowrap;
+  overflow-style: marquee-line;
+  overflow-x: marquee;
+}
+* {
+  color: #f00;
+}
+*:hover {
+  font-weight: bold;
+}
+:nth-child(odd) {
+  color: #00f;
+}
+}""";
+  testSass("@host", input, expected);
+}
+
+// TODO(terry): Move to emitter_test.dart when real emitter exist.
+void testEmitter() {
+  var errors = [];
+  var input = r"""
+.foo {
+  color: red; left: 20px; top: 20px; width: 100px; height:200px
+  }
+#div {
+  color : #00F578; border-color: #878787;
+}""";
+  var expected = r"""
+.foo {
+  color: #f00;
+  left: 20px;
+  top: 20px;
+  width: 100px;
+  height: 200px;
+}
+#div {
+  color: #00F578;
+  border-color: #878787;
+}""";
+  testSass("Emitter", input, expected);
+}
+
+void testSimple() {
+  var input = r"""
+.foo {
+  color: red; left: 20px; top: 20px; width: 100px; height:200px
+  }
+#div {
+  color : #00F578; border-color: #878787;
+}""";
+  var expected = r""".foo {
+  color: #f00;
+  left: 20px;
+  top: 20px;
+  width: 100px;
+  height: 200px;
+}
+#div {
+  color: #00F578;
+  border-color: #878787;
+}""";
+  testSass('Simple', input, expected);
+}
+
+testSass(String testName, String inputFile, String expectedFile) {
+  var transform = new ScssTransformer();
+  expectedFile = "/***** Generated by SCSS transform. *****/\n\n$expectedFile";
+  testPhases(testName, [[transform]], { 'a|web/test.scss' : inputFile },
+      { 'a|web/test.css' : expectedFile });
+  // TODO(terry): Test for any errors reported in logger.
+}
+
+void main() {
+  useCompactVMConfiguration();
+
+  testSimple();
+  testPseudo();
+  testHost();
+  testEmitter();
+}
+