[Sass] Add some basic tests for css2sass. Not all of them pass right now.

test/sass/css2sass/css2sass_test.rb

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+require 'test/unit'
+require File.dirname(__FILE__) + '/../../../lib/sass/css'
+
+class CSS2SassTest < Test::Unit::TestCase
+  def test_basic
+    css = <<-CSS
+h1 {
+  color: red;
+}
+    CSS
+    sass = <<-SASS
+h1
+  :color red
+    SASS
+    sass_alt = <<-SASS_ALT
+h1
+  color: red
+SASS_ALT
+    assert_equal(sass, css2sass(css))
+    assert_equal(sass_alt, css2sass(css, :alternate => true))
+  end
+
+  def test_nesting_1
+    css = <<-CSS
+li {
+  display: none;
+}
+
+li a {
+  text-decoration: none;
+}
+
+li a span {
+  color: yellow;
+}
+
+li a:hover {
+  text-decoration: underline;
+}
+CSS
+
+    sass = <<-SASS
+li
+  :display none
+
+  a
+    :text-decoration none
+
+    span
+      :color yellow
+
+    &:hover
+      :text-decoration underline
+SASS
+    assert_equal(sass, css2sass(css))
+  end
+
+  def test_nesting_2
+    css = <<-CSS
+li.menu {
+  display: none;
+}
+
+li.menu a {
+  text-decoration: none;
+}
+
+li.menu a:hover {
+  text-decoration: underline;
+}
+
+li a:hover {
+  color: red;
+}
+CSS
+
+    sass = <<-SASS
+li.menu
+  :display none
+
+  a
+    :text-decoration none
+
+    &:hover
+        :text-decoration underline
+
+  a:hover
+    :color red
+SASS
+    assert_equal(sass, css2sass(css))
+  end
+
+  def test_comments_oneline
+    css = <<-CSS
+// This is a comment!
+foo {
+  bar: baz;
+}
+
+monkey { // This is another comment!
+  tree: true;
+}
+
+div.banana {
+  // Who doesn't like bananas
+  potassium: high;
+}
+
+#pomegranate {
+  omnom: nom; // fruity goodness
+}
+
+.arewethereyet {
+  almost: there;
+} // hum...
+CSS
+    sass = <<-SASS
+foo
+  :bar baz
+
+
+monkey
+  :tree true
+
+
+div.banana
+  :potassium high
+
+
+.arewethereyet
+  :almost there
+SASS
+    assert_equal(sass, css2sass(css))
+  end
+
+  def test_comments_multiline
+    css = <<-CSS
+/* comment */
+elephant.rawr {
+  rampages: excessively;
+}
+
+/* actual multiline
+  comment */
+span.turkey {
+  isdinner: true;
+}
+
+.turducken {
+  /* Sounds funny
+     doesn't it */
+  chimera: not_really;
+}
+
+#overhere {
+  bored: sorta; /* it's for a good
+  cause */
+  better_than: thread_pools;
+}
+
+#one_more {
+  finally: srsly;
+} /* just a line here */
+CSS
+    sass = <<-SASS
+elephant.rawr
+  :rampages excessively
+
+
+span.turkey
+  :isdinner true
+
+
+.turducken
+  :chimera not_really
+
+
+#overhere
+  :bored sorta
+  :better_than thread_pools
+
+
+#one_more
+  :finally srsly
+SASS
+    assert_equal(css2sass(css), sass)
+  end
+
+  def test_fold_commas_1
+    css = <<-CSS
+li .one {
+  color: red;
+}
+li .two {
+  color: red;
+}
+CSS
+    sass = <<-SASS
+li
+  .one, .two
+    :color red
+SASS
+    assert_equal(sass, css2sass(css))
+  end
+
+  def test_fold_commas_2
+    css = <<-CSS
+li .one {
+  color: red;
+}
+li .two {
+  color: red;
+}
+li .three {
+  color: red;
+  mu: fasa;
+}
+CSS
+    sass = <<-SASS
+li
+  .one, .two, .three
+    :color red
+  .three
+    :mu fasa
+SASS
+    assert_equal(sass, css2sass(css))
+  end
+
+  def test_fold_commas_3
+    css = <<-CSS
+.one, .two {
+  color: green;
+}
+
+.two, .three {
+  color: red;
+}
+CSS
+    sass = <<-SASS
+.one
+  :color green
+
+
+.two
+  :color green
+  :color red
+
+
+.three
+  :color red
+SASS
+    assert_equal(sass, css2sass(css))
+  end
+
+  def test_bad_formatting
+    css = <<-CSS
+hello {
+  parent: true;
+}
+
+hello  there {
+  parent: false;
+}
+hello who  {
+  hoo: false;
+}
+hello why {
+   y: true;
+}
+hello when {
+  wen:  nao;
+}
+
+
+down_here { yeah: true; }
+CSS
+    sass = <<-SASS
+hello
+  :parent true
+
+  there
+    :parent false
+
+  who
+    :hoo false
+
+  why
+    :y true
+
+  when
+    :wen nao
+
+
+down_here
+  :yeah true
+SASS
+    assert_equal(sass, css2sass(css))
+  end
+
+  private
+  def css2sass(string, opts={})
+    Sass::CSS.new(string, opts).render
+  end
+end