engine_test.rb in radiant-0.9.0.rc2

- old
+ new

@@ -1,76 +1,123 @@
 #!/usr/bin/env ruby
 require File.dirname(__FILE__) + '/../test_helper'
 require 'sass/engine'
+require 'stringio'
 
 class SassEngineTest < Test::Unit::TestCase
   # A map of erroneous Sass documents to the error messages they should produce.
   # The error messages may be arrays;
   # if so, the second element should be the line number that should be reported for the error.
   # If this isn't provided, the tests will assume the line number should be the last line of the document.
   EXCEPTION_MAP = {
-    "!a = 1 + " => 'Constant arithmetic error: "1 +".',
-    "!a = 1 + 2 +" => 'Constant arithmetic error: "1 + 2 +".',
-    "!a = \"b" => 'Unterminated string: "\\"b".',
-    "!a = #aaa - a" => 'Undefined operation: "#aaaaaa minus a".',
-    "!a = #aaa / a" => 'Undefined operation: "#aaaaaa div a".',
-    "!a = #aaa * a" => 'Undefined operation: "#aaaaaa times a".',
-    "!a = #aaa % a" => 'Undefined operation: "#aaaaaa mod a".',
-    "!a = 1 - a" => 'Undefined operation: "1 minus a".',
-    "!a = 1 * a" => 'Undefined operation: "1 times a".',
-    "!a = 1 / a" => 'Undefined operation: "1 div a".',
-    "!a = 1 % a" => 'Undefined operation: "1 mod a".',
-    ":" => 'Invalid attribute: ":".',
-    ": a" => 'Invalid attribute: ": a".',
-    ":= a" => 'Invalid attribute: ":= a".',
-    "a\n  :b" => 'Invalid attribute: ":b ".',
-    "a\n  :b: c" => 'Invalid attribute: ":b: c".',
-    "a\n  :b:c d" => 'Invalid attribute: ":b:c d".',
-    "a\n  :b=c d" => 'Invalid attribute: ":b=c d".',
-    "a\n  :b c;" => 'Invalid attribute: ":b c;" (This isn\'t CSS!).',
-    "a\n  b : c" => 'Invalid attribute: "b : c".',
-    "a\n  b=c: d" => 'Invalid attribute: "b=c: d".',
-    ":a" => 'Attributes aren\'t allowed at the root of a document.',
-    "!" => 'Invalid constant: "!".',
-    "!a" => 'Invalid constant: "!a".',
-    "! a" => 'Invalid constant: "! a".',
-    "!a b" => 'Invalid constant: "!a b".',
-    "a\n\t:b c" => <<END.strip,
-A tab character was used for indentation. Sass must be indented using two spaces.
-Are you sure you have soft tabs enabled in your editor?
-END
-    "a\n :b c" => "1 space was used for indentation. Sass must be indented using two spaces.",
-    "a\n    :b c" => "4 spaces were used for indentation. Sass must be indented using two spaces.",
-    "a\n  :b c\n  !d = 3" => "Constants may only be declared at the root of a document.",
-    "!a = 1b + 2c" => "Incompatible units: b and c.",
+    "!a = 1 + " => 'Expected expression, was end of text.',
+    "!a = 1 + 2 +" => 'Expected expression, was end of text.',
+    "!a = 1 + 2 + %" => 'Expected expression, was mod token.',
+    "!a = foo(\"bar\"" => 'Expected rparen token, was end of text.',
+    "!a = 1 }" => 'Unexpected end_interpolation token.',
+    "!a = 1 }foo\"" => 'Unexpected end_interpolation token.',
+    ":" => 'Invalid property: ":".',
+    ": a" => 'Invalid property: ": a".',
+    ":= a" => 'Invalid property: ":= a".',
+    "a\n  :b" => <<MSG,
+Invalid property: ":b" (no value).
+If ":b" should be a selector, use "\\:b" instead.
+MSG
+    "a\n  b:" => 'Invalid property: "b:" (no value).',
+    "a\n  :b: c" => 'Invalid property: ":b: c".',
+    "a\n  :b:c d" => 'Invalid property: ":b:c d".',
+    "a\n  :b=c d" => 'Invalid property: ":b=c d".',
+    "a\n  :b c;" => 'Invalid property: ":b c;" (no ";" required at end-of-line).',
+    "a\n  b: c;" => 'Invalid property: "b: c;" (no ";" required at end-of-line).',
+    "a\n  b : c" => 'Invalid property: "b : c".',
+    "a\n  b=c: d" => 'Invalid property: "b=c: d".',
+    ":a b" => 'Properties aren\'t allowed at the root of a document.',
+    "a:" => 'Properties aren\'t allowed at the root of a document.',
+    ":a" => <<MSG,
+Properties aren't allowed at the root of a document.
+If ":a" should be a selector, use "\\:a" instead.
+MSG
+    "!" => 'Invalid variable: "!".',
+    "!a" => 'Invalid variable: "!a".',
+    "! a" => 'Invalid variable: "! a".',
+    "!a b" => 'Invalid variable: "!a b".',
+    "!a = 1b + 2c" => "Incompatible units: 'c' and 'b'.",
+    "!a = 1b < 2c" => "Incompatible units: 'c' and 'b'.",
+    "!a = 1b > 2c" => "Incompatible units: 'c' and 'b'.",
+    "!a = 1b <= 2c" => "Incompatible units: 'c' and 'b'.",
+    "!a = 1b >= 2c" => "Incompatible units: 'c' and 'b'.",
+    "a\n  :b= 1b * 2c" => "2b*c isn't a valid CSS value.",
+    "a\n  :b= 1b % 2c" => "Cannot modulo by a number with units: 2c.",
+    "!a = 2px + #ccc" => "Cannot add a number with units (2px) to a color (#cccccc).",
+    "!a = #ccc + 2px" => "Cannot add a number with units (2px) to a color (#cccccc).",
     "& a\n  :b c" => ["Base-level rules cannot contain the parent-selector-referencing character '&'.", 1],
-    "a\n  :b\n    c" => "Illegal nesting: Only attributes may be nested beneath attributes.",
-    "a,\n  :b c" => "Rules can\'t end in commas.",
+    "a\n  :b\n    c" => "Illegal nesting: Only properties may be nested beneath properties.",
+    "a,\n  :b c" => ["Rules can\'t end in commas.", 1],
     "a," => "Rules can\'t end in commas.",
-    "a,\n!b = c" => "Rules can\'t end in commas.",
-    "!a = b\n  :c d\n" => "Illegal nesting: Nothing may be nested beneath constants.",
+    "a,\n!b = 1" => ["Rules can\'t end in commas.", 1],
+    "!a = b\n  :c d\n" => "Illegal nesting: Nothing may be nested beneath variable declarations.",
     "@import foo.sass" => "File to import not found or unreadable: foo.sass.",
     "@import templates/basic\n  foo" => "Illegal nesting: Nothing may be nested beneath import directives.",
     "foo\n  @import templates/basic" => "Import directives may only be used at the root of a document.",
-    "!foo = bar baz !" => "Unterminated constant.",
-    "!foo = !(foo)" => "Invalid constant.",
+    "foo\n  @import #{File.dirname(__FILE__)}/templates/basic" => "Import directives may only be used at the root of a document.",
+    %Q{!foo = "bar" "baz" !} => %Q{Syntax error in '"bar" "baz" !' at character 20.},
     "=foo\n  :color red\n.bar\n  +bang" => "Undefined mixin 'bang'.",
-    ".bar\n  =foo\n    :color red\n" => "Mixins may only be defined at the root of a document.",
+    ".bar\n  =foo\n    :color red\n" => ["Mixins may only be defined at the root of a document.", 2],
     "=foo\n  :color red\n.bar\n  +foo\n    :color red" => "Illegal nesting: Nothing may be nested beneath mixin directives.",
     "    a\n  b: c" => ["Indenting at the beginning of the document is illegal.", 1],
     " \n   \n\t\n  a\n  b: c" => ["Indenting at the beginning of the document is illegal.", 4],
+    "a\n  b: c\n b: c" => ["Inconsistent indentation: 1 space was used for indentation, but the rest of the document was indented using 2 spaces.", 3],
+    "a\n  b: c\na\n b: c" => ["Inconsistent indentation: 1 space was used for indentation, but the rest of the document was indented using 2 spaces.", 4],
+    "a\n\t\tb: c\n\tb: c" => ["Inconsistent indentation: 1 tab was used for indentation, but the rest of the document was indented using 2 tabs.", 3],
+    "a\n  b: c\n   b: c" => ["Inconsistent indentation: 3 spaces were used for indentation, but the rest of the document was indented using 2 spaces.", 3],
+    "a\n  b: c\n  a\n   d: e" => ["Inconsistent indentation: 3 spaces were used for indentation, but the rest of the document was indented using 2 spaces.", 4],
+    "a\n  b: c\na\n    d: e" => ["The line was indented 2 levels deeper than the previous line.", 4],
+    "a\n  b: c\n  a\n        d: e" => ["The line was indented 3 levels deeper than the previous line.", 4],
+    "a\n \tb: c" => ["Indentation can't use both tabs and spaces.", 2],
+    "=a(" => 'Expected rparen token, was end of text.',
+    "=a(b)" => 'Expected rparen token, was ident token.',
+    "=a(,)" => "Expected rparen token, was comma token.",
+    "=a(!)" => "Syntax error in '(!)' at character 4.",
+    "=a(!foo bar)" => "Expected rparen token, was ident token.",
+    "=foo\n  bar: baz\n+foo" => ["Properties aren't allowed at the root of a document.", 2],
+    "a-\#{!b\n  c: d" => ["Expected end_interpolation token, was end of text.", 1],
+    "=a(!b = 1, !c)" => "Required argument !c must come before any optional arguments.",
+    "=a(!b = 1)\n  :a= !b\ndiv\n  +a(1,2)" => "Mixin a takes 1 argument but 2 were passed.",
+    "=a(!b)\n  :a= !b\ndiv\n  +a" => "Mixin a is missing parameter !b.",
+    "@else\n  a\n    b: c" => ["@else must come after @if.", 1],
+    "@if false\n@else foo" => "Invalid else directive '@else foo': expected 'if <expr>'.",
+    "@if false\n@else if " => "Invalid else directive '@else if': expected 'if <expr>'.",
+    "a\n  !b = 12\nc\n  d = !b" => 'Undefined variable: "!b".',
+    "=foo\n  !b = 12\nc\n  +foo\n  d = !b" => 'Undefined variable: "!b".',
+    '@for !a from "foo" to 1' => '"foo" is not an integer.',
+    '@for !a from 1 to "2"' => '"2" is not an integer.',
+    '@for !a from 1 to "foo"' => '"foo" is not an integer.',
+    '@for !a from 1 to 1.232323' => '1.232 is not an integer.',
+    '@for !a from 1px to 3em' => "Incompatible units: 'em' and 'px'.",
+    '@if' => "Invalid if directive '@if': expected expression.",
+    '@while' => "Invalid while directive '@while': expected expression.",
+    '@debug' => "Invalid debug directive '@debug': expected expression.",
+    "/* foo\n    bar\n  baz" => "Inconsistent indentation: previous line was indented by 4 spaces, but this line was indented by 2 spaces.",
 
     # Regression tests
-    "a\n  b:\n    c\n    d" => ["Illegal nesting: Only attributes may be nested beneath attributes.", 3],
+    "a\n  b:\n    c\n    d" => ["Illegal nesting: Only properties may be nested beneath properties.", 3],
     "& foo\n  bar: baz\n  blat: bang" => ["Base-level rules cannot contain the parent-selector-referencing character '&'.", 1],
     "a\n  b: c\n& foo\n  bar: baz\n  blat: bang" => ["Base-level rules cannot contain the parent-selector-referencing character '&'.", 3],
   }
-  
+
+  def teardown
+    clean_up_sassc
+  end
+
   def test_basic_render
     renders_correctly "basic", { :style => :compact }
   end
 
+  def test_empty_render
+    assert_equal "", render("")
+  end
+
   def test_multiple_calls_to_render
     sass = Sass::Engine.new("a\n  b: c")
     assert_equal sass.render, sass.render
   end
 
@@ -79,40 +126,72 @@
     renders_correctly "compact", { :style => :compact }
     renders_correctly "nested", { :style => :nested }
     renders_correctly "compressed", { :style => :compressed }
   end
   
-  def test_exceptions
-    EXCEPTION_MAP.each do |key, value|
+  def test_flexible_tabulation
+    assert_equal("p {\n  a: b; }\n  p q {\n    c: d; }\n",
+                 render("p\n a: b\n q\n  c: d\n"))
+    assert_equal("p {\n  a: b; }\n  p q {\n    c: d; }\n",
+                 render("p\n\ta: b\n\tq\n\t\tc: d\n"))
+  end
+  
+  EXCEPTION_MAP.each do |key, value|
+    define_method("test_exception (#{key.inspect})") do
+      line = 10
       begin
-        Sass::Engine.new(key).render
+        silence_warnings {Sass::Engine.new(key, :filename => __FILE__, :line => line).render}
       rescue Sass::SyntaxError => err
         value = [value] unless value.is_a?(Array)
 
-        assert_equal(value.first, err.message, "Line: #{key}")
-        assert_equal(value[1] || key.split("\n").length, err.sass_line, "Line: #{key}")
-        assert_match(/\(sass\):[0-9]+/, err.backtrace[0], "Line: #{key}")
+        assert_equal(value.first.rstrip, err.message, "Line: #{key}")
+        assert_equal(__FILE__, err.sass_filename)
+        assert_equal((value[1] || key.split("\n").length) + line - 1, err.sass_line, "Line: #{key}")
+        assert_match(/#{Regexp.escape(__FILE__)}:[0-9]+/, err.backtrace[0], "Line: #{key}")
       else
         assert(false, "Exception not raised for\n#{key}")
       end
     end
   end
 
   def test_exception_line
-    to_render = "rule\n  :attr val\n// comment!\n\n  :broken\n"
+    to_render = <<SASS
+rule
+  :prop val
+  // comment!
+
+  :broken
+SASS
     begin
       Sass::Engine.new(to_render).render
     rescue Sass::SyntaxError => err
       assert_equal(5, err.sass_line)
     else
       assert(false, "Exception not raised for '#{to_render}'!")
     end
   end
 
+  def test_exception_location
+    to_render = <<SASS
+rule
+  :prop val
+  // comment!
+
+  :broken
+SASS
+    begin
+      Sass::Engine.new(to_render, :filename => __FILE__, :line => (__LINE__-7)).render
+    rescue Sass::SyntaxError => err
+      assert_equal(__FILE__, err.sass_filename)
+      assert_equal((__LINE__-6), err.sass_line)
+    else
+      assert(false, "Exception not raised for '#{to_render}'!")
+    end
+  end
+
   def test_imported_exception
-    [1, 2].each do |i|
-      i = nil if i == 1
+    [nil, 2].each do |i|
       begin
         Sass::Engine.new("@import bork#{i}", :load_paths => [File.dirname(__FILE__) + '/templates/']).render
       rescue Sass::SyntaxError => err
         assert_equal(2, err.sass_line)
         assert_match(/bork#{i}\.sass$/, err.sass_filename)
@@ -121,23 +200,58 @@
       end
     end
   end
 
   def test_css_import
-    assert_equal("@import url(./fonts.css) screen;", render("@import url(./fonts.css) screen"))
-    assert_equal("@import \"./fonts.css\" screen;", render("@import \"./fonts.css\" screen"))
+    assert_equal("@import url(./fonts.css) screen;\n", render("@import url(./fonts.css) screen"))
+    assert_equal("@import \"./fonts.css\" screen;\n", render("@import \"./fonts.css\" screen"))
   end
 
   def test_sass_import
+    assert !File.exists?(sassc_path("importee"))
     renders_correctly "import", { :style => :compact, :load_paths => [File.dirname(__FILE__) + "/templates"] }
+    assert File.exists?(sassc_path("importee"))
   end
 
+  def test_nonexistent_extensionless_import
+    assert_warning(<<WARN) do
+WARNING: nonexistent.sass not found. Using nonexistent.css instead.
+This behavior is deprecated and will be removed in a future version.
+If you really need nonexistent.css, import it explicitly.
+WARN
+      assert_equal("@import url(nonexistent.css);\n", render("@import nonexistent"))
+    end
+  end
+
+  def test_no_cache
+    assert !File.exists?(sassc_path("importee"))
+    renders_correctly("import", {
+        :style => :compact, :cache => false,
+        :load_paths => [File.dirname(__FILE__) + "/templates"],
+      })
+    assert !File.exists?(sassc_path("importee"))
+  end
+
+  def test_units
+    renders_correctly "units"
+  end
+
   def test_default_function
-    assert_equal("foo {\n  bar: url(foo.png); }\n", render("foo\n  bar = url(foo.png)\n"));
+    assert_equal("foo {\n  bar: url(foo.png); }\n", render(%Q{foo\n  bar = url("foo.png")\n}));
     assert_equal("foo {\n  bar: url(); }\n", render("foo\n  bar = url()\n"));
   end
 
+  def test_string_minus
+    assert_equal("foo {\n  bar: baz-boom-bat; }\n", render(%Q{foo\n  bar = "baz"-"boom"-"bat"}))
+    assert_equal("foo {\n  bar: -baz-boom; }\n", render(%Q{foo\n  bar = -"baz"-"boom"}))
+  end
+
+  def test_string_div
+    assert_equal("foo {\n  bar: baz/boom/bat; }\n", render(%Q{foo\n  bar = "baz"/"boom"/"bat"}))
+    assert_equal("foo {\n  bar: /baz/boom; }\n", render(%Q{foo\n  bar = /"baz"/"boom"}))
+  end
+
   def test_basic_multiline_selector
     assert_equal("#foo #bar,\n#baz #boom {\n  foo: bar; }\n",
                  render("#foo #bar,\n#baz #boom\n  :foo bar"))
     assert_equal("#foo #bar,\n#foo #baz {\n  foo: bar; }\n",
                  render("#foo\n  #bar,\n  #baz\n    :foo bar"))
@@ -154,25 +268,27 @@
     renders_correctly "multiline"
   end
 
   def test_colon_only
     begin
-      render("a\n  b: c", :attribute_syntax => :normal)
+      render("a\n  b: c", :property_syntax => :old)
     rescue Sass::SyntaxError => e
-      assert_equal("Illegal attribute syntax: can't use alternate syntax when :attribute_syntax => :normal is set.",
+      assert_equal("Illegal property syntax: can't use new syntax when :property_syntax => :old is set.",
                    e.message)
+      assert_equal(2, e.sass_line)
     else
-      assert(false, "SyntaxError not raised for :attribute_syntax => :normal")
+      assert(false, "SyntaxError not raised for :property_syntax => :old")
     end
 
     begin
-      render("a\n  :b c", :attribute_syntax => :alternate)
+      render("a\n  :b c", :property_syntax => :new)
+      assert_equal(2, e.sass_line)
     rescue Sass::SyntaxError => e
-      assert_equal("Illegal attribute syntax: can't use normal syntax when :attribute_syntax => :alternate is set.",
+      assert_equal("Illegal property syntax: can't use old syntax when :property_syntax => :new is set.",
                    e.message)
     else
-      assert(false, "SyntaxError not raised for :attribute_syntax => :alternate")
+      assert(false, "SyntaxError not raised for :property_syntax => :new")
     end
   end
 
   def test_pseudo_elements
     assert_equal(<<CSS, render(<<SASS))
@@ -183,11 +299,11 @@
   size: 10em
 SASS
   end
 
   def test_directive
-    assert_equal("@a b;", render("@a b"))
+    assert_equal("@a b;\n", render("@a b"))
 
     assert_equal("@a {\n  b: c; }\n", render("@a\n  :b c"))
     assert_equal("@a { b: c; }\n", render("@a\n  :b c", :style => :compact))
     assert_equal("@a {\n  b: c;\n}\n", render("@a\n  :b c", :style => :expanded))
     assert_equal("@a{b:c}\n", render("@a\n  :b c", :style => :compressed))
@@ -243,10 +359,58 @@
     assert_equal(rendered, render(to_render, :style => :compact))
     
     assert_equal("@a{b:c;#d{e:f}g:h}\n", render(to_render, :style => :compressed))
   end
 
+  def test_line_annotations
+    assert_equal(<<CSS, render(<<SASS, :line_comments => true, :style => :compact))
+/* line 2, test_line_annotations_inline.sass */
+foo bar { foo: bar; }
+/* line 5, test_line_annotations_inline.sass */
+foo baz { blip: blop; }
+
+/* line 9, test_line_annotations_inline.sass */
+floodle { flop: blop; }
+
+/* line 18, test_line_annotations_inline.sass */
+bup { mix: on; }
+/* line 15, test_line_annotations_inline.sass */
+bup mixin { moop: mup; }
+
+/* line 22, test_line_annotations_inline.sass */
+bip hop, skip hop { a: b; }
+CSS
+foo
+  bar
+    foo: bar
+
+  baz
+    blip: blop
+
+
+floodle
+
+  flop: blop
+
+=mxn
+  mix: on
+  mixin
+    moop: mup
+
+bup
+  +mxn
+
+bip, skip
+  hop
+    a: b
+SASS
+  end
+
+  def test_line_annotations_with_filename
+    renders_correctly "line_numbers", :line_comments => true, :load_paths => [File.dirname(__FILE__) + "/templates"]
+  end
+
   def test_empty_first_line
     assert_equal("#a {\n  b: c; }\n", render("#a\n\n  b: c"))
   end
 
   def test_escaped_rule
@@ -257,38 +421,550 @@
   def test_cr_newline
     assert_equal("foo {\n  a: b;\n  c: d;\n  e: f; }\n", render("foo\r  a: b\r\n  c: d\n\r  e: f"))
   end
 
   def test_or_eq
-    assert_equal("foo {\n  a: b; }\n", render("!foo = b\n!foo ||= c\nfoo\n  a = !foo"))
-    assert_equal("foo {\n  a: b; }\n", render("!foo ||= b\nfoo\n  a = !foo"))
+    assert_equal("foo {\n  a: b; }\n", render(%Q{!foo = "b"\n!foo ||= "c"\nfoo\n  a = !foo}))
+    assert_equal("foo {\n  a: b; }\n", render(%Q{!foo ||= "b"\nfoo\n  a = !foo}))
   end
   
   def test_mixins
     renders_correctly "mixins", { :style => :expanded }
   end
 
   def test_mixins_dont_interfere_with_sibling_combinator
-    assert_equal("foo + bar {\n  a: b; }\n", render("foo\n  + bar\n    a: b"))
     assert_equal("foo + bar {\n  a: b; }\nfoo + baz {\n  c: d; }\n",
                  render("foo\n  +\n    bar\n      a: b\n    baz\n      c: d"))
   end
 
-  private
+  def test_mixin_args
+    assert_equal("blat {\n  baz: hi; }\n", render(<<SASS))
+=foo(!bar)
+  baz = !bar
+blat
+  +foo(\"hi\")
+SASS
+    assert_equal("blat {\n  baz: 3; }\n", render(<<SASS))
+=foo(!a, !b)
+  baz = !a + !b
+blat
+  +foo(1, 2)
+SASS
+    assert_equal("blat {\n  baz: 4;\n  baz: 3;\n  baz: 5;\n  bang: 3; }\n", render(<<SASS))
+=foo(!c = (6 + 4) / 2)
+  baz = !c
+!c = 3
+blat
+  +foo(!c + 1)
+  +foo((!c + 3)/2)
+  +foo
+  bang = !c
+SASS
+  end
 
+  def test_default_values_for_mixin_arguments
+    assert_equal("white {\n  color: white; }\n\nblack {\n  color: black; }\n", render(<<SASS))
+=foo(!a = #FFF)
+  :color= !a
+white
+  +foo
+black
+  +foo(#000)
+SASS
+    assert_equal(<<CSS, render(<<SASS))
+one {
+  color: white;
+  padding: 1px;
+  margin: 4px; }
+
+two {
+  color: white;
+  padding: 2px;
+  margin: 5px; }
+
+three {
+  color: white;
+  padding: 2px;
+  margin: 3px; }
+CSS
+!a = 5px
+=foo(!a, !b = 1px, !c = 3px + !b)
+  :color= !a
+  :padding= !b
+  :margin= !c
+one
+  +foo(#fff)
+two
+  +foo(#fff, 2px)
+three
+  +foo(#fff, 2px, 3px)
+SASS
+  end
+
+  def test_interpolation
+    assert_equal("a-1 {\n  b-2-3: c-3; }\n", render(<<SASS))
+!a = 1
+!b = 2
+!c = 3
+a-\#{!a}
+  b-\#{!b}-\#{!c}: c-\#{!a + !b}
+SASS
+  end
+
+  def test_if_directive
+    assert_equal("a {\n  b: 1; }\n", render(<<SASS))
+!var = true
+a
+  @if !var
+    b: 1
+  @if not !var
+    b: 2
+SASS
+  end
+
+  def test_for
+    assert_equal(<<CSS, render(<<SASS))
+a-0 {
+  2i: 0; }
+
+a-1 {
+  2i: 2; }
+
+a-2 {
+  2i: 4; }
+
+a-3 {
+  2i: 6; }
+
+b-1 {
+  j-1: 0; }
+
+b-2 {
+  j-1: 1; }
+
+b-3 {
+  j-1: 2; }
+
+b-4 {
+  j-1: 3; }
+CSS
+!a = 3
+@for !i from 0 to !a + 1
+  a-\#{!i}
+    2i = 2 * !i
+
+@for !j from 1 through 4
+  b-\#{!j}
+    j-1 = !j - 1
+SASS
+  end
+
+  def test_while
+    assert_equal(<<CSS, render(<<SASS))
+a-5 {
+  blooble: gloop; }
+
+a-4 {
+  blooble: gloop; }
+
+a-3 {
+  blooble: gloop; }
+
+a-2 {
+  blooble: gloop; }
+
+a-1 {
+  blooble: gloop; }
+CSS
+!a = 5
+@while !a != 0
+  a-\#{!a}
+    blooble: gloop
+  !a = !a - 1
+SASS
+  end
+
+  def test_else
+    assert_equal(<<CSS, render(<<SASS))
+a {
+  t1: t;
+  t2: t;
+  t3: t;
+  t4: t; }
+CSS
+a
+  @if true
+    t1: t
+  @else
+    f1: f
+
+  @if false
+    f2: f
+  @else
+    t2: t
+
+  @if false
+    f3: f1
+  @else if 1 + 1 == 3
+    f3: f2
+  @else
+    t3: t
+
+  @if false
+    f4: f1
+  @else if 1 + 1 == 2
+    t4: t
+  @else
+    f4: f2
+
+  @if false
+    f5: f1
+  @else if false
+    f5: f2
+SASS
+  end
+
+  def test_variable_reassignment
+    assert_equal(<<CSS, render(<<SASS))
+a {
+  b: 1;
+  c: 2; }
+CSS
+!a = 1
+a
+  b = !a
+  !a = 2
+  c = !a
+SASS
+  end
+
+  def test_variable_scope
+    assert_equal(<<CSS, render(<<SASS))
+a {
+  b-1: c;
+  b-2: c;
+  d: 12; }
+
+b {
+  d: 17; }
+CSS
+!i = 12
+a
+  @for !i from 1 through 2
+    b-\#{!i}: c
+  d = !i
+
+=foo
+  !i = 17
+
+b
+  +foo
+  d = !i
+SASS
+  end
+
+  def test_argument_error
+    assert_raise(Sass::SyntaxError) { render("a\n  b = hsl(1)") }
+  end
+
+  def test_comments_at_the_top_of_a_document
+    render(<<SASS)
+//
+  This is a comment that
+  continues to the second line.
+foo
+  bar: baz
+SASS
+  end
+
+  def test_loud_comments_containing_a_comment_close
+    actual_css = render(<<SASS)
+/*
+  This is a comment that
+  continues to the second line. */
+foo
+  bar: baz
+SASS
+assert_equal(<<CSS, actual_css)
+/* This is a comment that
+ * continues to the second line. */
+foo {
+  bar: baz; }
+CSS
+  end
+
+  def test_comment_indentation_at_beginning_of_doc
+    assert_equal <<CSS, render(<<SASS)
+/* foo
+ * bar
+ *   baz */
+foo {
+  a: b; }
+CSS
+/* foo
+   bar
+     baz
+foo
+  a: b
+SASS
+  end
+
+  def test_unusual_comment_indentation
+    assert_equal <<CSS, render(<<SASS)
+foo {
+  /* foo
+   * bar
+   *   baz */ }
+CSS
+foo
+  /* foo
+     bar
+       baz
+SASS
+  end
+
+  def test_attribute_selector_with_spaces
+    assert_equal(<<CSS, render(<<SASS))
+a b[foo = bar] {
+  c: d; }
+CSS
+a
+  b[foo = bar]
+    c: d
+SASS
+  end
+
+  def test_quoted_colon
+    assert_equal(<<CSS, render(<<SASS))
+a b[foo="bar: baz"] {
+  c: d; }
+CSS
+a
+  b[foo="bar: baz"]
+    c: d
+SASS
+  end
+
+  def test_quoted_comma
+    assert_equal(<<CSS, render(<<SASS))
+a b[foo="bar, baz"] {
+  c: d; }
+CSS
+a
+  b[foo="bar, baz"]
+    c: d
+SASS
+  end
+
+  def test_quoted_ampersand
+    assert_equal(<<CSS, render(<<SASS))
+a b[foo="bar & baz"] {
+  c: d; }
+CSS
+a
+  b[foo="bar & baz"]
+    c: d
+SASS
+  end
+
+  def test_empty_selector_warning
+    assert_warning(<<END) {render("foo bar")}
+WARNING on line 1 of test_empty_selector_warning_inline.sass:
+Selector "foo bar" doesn't have any properties and will not be rendered.
+END
+
+    assert_warning(<<END) {render(<<SASS)}
+WARNING on line 3 of test_empty_selector_warning_inline.sass:
+Selector
+  foo, bar, baz,
+  bang, bip, bop
+doesn't have any properties and will not be rendered.
+END
+
+
+foo, bar, baz,
+bang, bip, bop
+SASS
+
+    assert_warning(<<END) {render("foo bar", :filename => nil)}
+WARNING on line 1:
+Selector "foo bar" doesn't have any properties and will not be rendered.
+END
+  end
+
+  def test_root_level_pseudo_class_with_new_properties
+    assert_equal(<<CSS, render(<<SASS, :property_syntax => :new))
+:focus {
+  outline: 0; }
+CSS
+:focus
+  outline: 0
+SASS
+  end
+
+  def test_pseudo_class_with_new_properties
+    assert_equal(<<CSS, render(<<SASS, :property_syntax => :new))
+p :focus {
+  outline: 0; }
+CSS
+p
+  :focus
+    outline: 0
+SASS
+  end
+
+  def test_nil_option
+    assert_equal(<<CSS, render(<<SASS, :format => nil))
+foo {
+  a: b; }
+CSS
+foo
+  a: b
+SASS
+  end
+
+  # Regression tests
+
+  def test_parens_in_mixins
+    assert_equal(<<CSS, render(<<SASS))
+.foo {
+  color: #01ff7f;
+  background-color: #000102; }
+CSS
+=foo(!c1, !c2 = rgb(0, 1, 2))
+  color = !c1
+  background-color = !c2
+
+.foo
+  +foo(rgb(1,255,127))
+SASS
+  end
+
+  def test_comment_beneath_prop
+    assert_equal(<<RESULT, render(<<SOURCE))
+.box {
+  border-style: solid; }
+RESULT
+.box
+  :border
+    //:color black
+    :style solid
+SOURCE
+
+    assert_equal(<<RESULT, render(<<SOURCE))
+.box {
+  /* :color black */
+  border-style: solid; }
+RESULT
+.box
+  :border
+    /*:color black
+    :style solid
+SOURCE
+
+    assert_equal(<<RESULT, render(<<SOURCE, :style => :compressed))
+.box{border-style:solid}
+RESULT
+.box
+  :border
+    /*:color black
+    :style solid
+SOURCE
+  end
+
+  def test_compressed_comment_beneath_directive
+    assert_equal(<<RESULT, render(<<SOURCE, :style => :compressed))
+@foo{a:b}
+RESULT
+@foo
+  a: b
+  /*b: c
+SOURCE
+  end
+
+  def test_comment_with_crazy_indentation
+    assert_equal(<<CSS, render(<<SASS))
+/* This is a loud comment:
+ *          Where the indentation is wonky. */
+.comment {
+  width: 1px; }
+CSS
+/*
+  This is a loud comment:
+           Where the indentation is wonky.
+//
+  This is a silent comment:
+           Where the indentation is wonky.
+.comment
+  width: 1px
+SASS
+  end
+
+  def test_plus_with_space
+    assert_equal(<<CSS, render(<<SASS))
+a + b {
+  color: green; }
+CSS
+a
+  + b
+    color: green
+SASS
+  end
+
+  def test_empty_line_comment
+    assert_equal(<<CSS, render(<<SASS))
+/* Foo
+ *
+ * Bar */
+CSS
+/*
+  Foo
+
+  Bar
+SASS
+  end
+
+  def test_empty_comment
+    assert_equal(<<CSS, render(<<SASS))
+/* */
+a {
+  /* */
+  b: c; }
+CSS
+/*
+a
+  /*
+  b: c
+SASS
+  end
+
+  private
+  
   def render(sass, options = {})
+    munge_filename options
     Sass::Engine.new(sass, options).render
   end
 
   def renders_correctly(name, options={})
     sass_file  = load_file(name, "sass")
     css_file   = load_file(name, "css")
+    options[:filename] ||= filename(name, "sass")
+    options[:css_filename] ||= filename(name, "css")
     css_result = Sass::Engine.new(sass_file, options).render
     assert_equal css_file, css_result
   end
 
   def load_file(name, type = "sass")
     @result = ''
-    File.new(File.dirname(__FILE__) + "/#{type == 'sass' ? 'templates' : 'results'}/#{name}.#{type}").each_line { |l| @result += l }
+    File.new(filename(name, type)).each_line { |l| @result += l }
     @result
+  end
+
+  def filename(name, type)
+    File.dirname(__FILE__) + "/#{type == 'sass' ? 'templates' : 'results'}/#{name}.#{type}"
+  end
+
+  def sassc_path(template)
+    sassc_path = File.join(File.dirname(__FILE__) + "/templates/#{template}.sass")
+    Sass::Files.send(:sassc_filename, sassc_path, Sass::Engine::DEFAULT_OPTIONS)
   end
 end