Fix selectors :not(.a,.b)

Fix #160

lib/css_parser/parser.rb

@@ -7,6 +7,25 @@ class RemoteFileError < IOError; end
   # Exception class used if a request is made to load a CSS file more than once.
   class CircularReferenceError < StandardError; end
 
+  # We have a Parser class which you create and instance of but we have some
+  # functions which is nice to have outside of this instance
+  module ParserFx
+    def self.split_selectors(tokens)
+      # it is expecting the selector tokens from node: :style_rule, not just
+      # from Crass::Tokenizer.tokenize(input)
+
+      tokens
+        .each_with_object([[]]) do |token, sum|
+          case token
+          in node: :comma
+            sum << []
+          else
+            sum.last << token
+          end
+        end
+    end
+  end
+
   # == Parser class
   #
   # All CSS is converted to UTF-8.
@@ -80,7 +99,7 @@ def find_rule_sets(selectors, media_types = :all)
       rule_sets = []
 
       selectors.each do |selector|
-        selector = selector.gsub(/\s+/, ' ').strip
+        selector = selector.strip
         each_rule_set(media_types) do |rule_set, _media_type|
           if !rule_sets.member?(rule_set) && rule_set.selectors.member?(selector)
             rule_sets << rule_set
@@ -130,9 +149,12 @@ def add_block!(block, options = {})
         case node
         in node: :style_rule
           declarations = create_declaration_from_properties(node[:children])
+          selectors = ParserFx
+                      .split_selectors(node[:selector][:tokens])
+                      .map { Crass::Parser.stringify(_1).strip }
 
           add_rule_options = {
-            selectors: node[:selector][:value],
+            selectors: selectors,
             block: declarations,
             media_types: current_media_queries
           }

lib/css_parser/rule_set.rb

@@ -59,7 +59,7 @@ def initialize(selectors: nil, block: nil, offset: nil, filename: nil, specifici
       @offset = offset
       @filename = filename
 
-      parse_selectors!(selectors) if selectors
+      @selectors = Array(selectors) if selectors
       parse_declarations!(block)
     end
 
@@ -450,17 +450,6 @@ def parse_declarations!(block) # :nodoc:
       end
     end
 
-    #--
-    # TODO: way too simplistic
-    #++
-    def parse_selectors!(selectors) # :nodoc:
-      @selectors = selectors.split(',').map do |s|
-        s.gsub!(/\s+/, ' ')
-        s.strip!
-        s
-      end
-    end
-
     def split_value_preserving_function_whitespace(value)
       split_value = value.gsub(RE_FUNCTIONS) do |c|
         c.gsub!(/\s+/, WHITESPACE_REPLACEMENT)

test/test_css_parser_misc.rb

@@ -133,7 +133,7 @@ def test_multiline_declarations
   end
 
   def test_find_rule_sets
-    css = <<-CSS
+    css = <<~CSS
       h1, h2 { color: blue; }
       h1 { font-size: 10px; }
       h2 { font-size: 5px; }
@@ -144,9 +144,37 @@ def test_find_rule_sets
 
     @cp.add_block!(css)
     assert_equal 2, @cp.find_rule_sets(["h2"]).size
+    assert_equal 2, @cp.find_rule_sets(["  h2  "]).size
     assert_equal 3, @cp.find_rule_sets(["h1", "h2"]).size
-    assert_equal 2, @cp.find_rule_sets(["article h3"]).size
-    assert_equal 2, @cp.find_rule_sets(["  article \t  \n  h3 \n "]).size
+    assert_equal 1, @cp.find_rule_sets(["article  h3"]).size
+    assert_equal 1, @cp.find_rule_sets(["article\nh3"]).size
+    assert_equal 0, @cp.find_rule_sets(["  article \t  \n  h3 \n "]).size
+  end
+
+  def test_whitespace_in_selector_names
+    css = <<~CSS
+      h1        {}
+        h1 pre{}
+      .a.b.c
+      .d.e.f {}
+      h1     > pre {}
+      input[name="Joe"]{}
+      input[name="Joe    Doe"]{}
+      input:not(a,b){}
+    CSS
+
+    @cp.add_block!(css)
+
+    assert_equal(
+      ["h1",
+       "h1 pre",
+       ".a.b.c\n.d.e.f",
+       "h1     > pre",
+       "input[name=\"Joe\"]",
+       "input[name=\"Joe    Doe\"]",
+       "input:not(a,b)"],
+      @cp.rules_by_media_query[:all].flat_map(&:selectors)
+    )
   end
 
   def test_calculating_specificity
@@ -171,13 +199,17 @@ def test_calculating_specificity
 
   def test_converting_uris
     base_uri = 'http://www.example.org/style/basic.css'
-    ["body { background: url(yellow) };", "body { background: url('yellow') };",
-     "body { background: url('/style/yellow') };",
-     "body { background: url(\"../style/yellow\") };",
-     "body { background: url(\"lib/../../style/yellow\") };"].each do |css|
-      converted_css = CssParser.convert_uris(css, base_uri)
-      assert_equal "body { background: url('http://www.example.org/style/yellow') };", converted_css
-    end
+    [
+      "body { background: url(yellow) };",
+      "body { background: url('yellow') };",
+      "body { background: url('/style/yellow') };",
+      "body { background: url(\"../style/yellow\") };",
+      "body { background: url(\"lib/../../style/yellow\") };"
+    ]
+      .each do |css|
+        converted_css = CssParser.convert_uris(css, base_uri)
+        assert_equal "body { background: url('http://www.example.org/style/yellow') };", converted_css
+      end
 
     converted_css = CssParser.convert_uris("body { background: url(../style/yellow-dot_symbol$.png?abc=123&amp;def=456&ghi=789#1011) };", base_uri)
     assert_equal "body { background: url('http://www.example.org/style/yellow-dot_symbol$.png?abc=123&amp;def=456&ghi=789#1011') };", converted_css

test/test_rule_set.rb

@@ -38,7 +38,7 @@ def test_each_selector
     ]
 
     actual = []
-    rs = RuleSet.new(selectors: '#content p, a', block: 'color: #fff;')
+    rs = RuleSet.new(selectors: ['#content p', 'a'], block: 'color: #fff;')
     rs.each_selector do |sel, decs, spec|
       actual << {selector: sel, declarations: decs, specificity: spec}
     end
@@ -78,12 +78,6 @@ def test_each_declaration_containing_semicolons
     assert_equal('no-repeat;', rs['background-repeat'])
   end
 
-  def test_selector_sanitization
-    selectors = "h1, h2,\nh3 "
-    rs = RuleSet.new(selectors: selectors, block: "color: #fff;")
-    assert rs.selectors.member?("h3")
-  end
-
   def test_multiple_selectors_to_s
     selectors = "#content p, a"
     rs = RuleSet.new(selectors: selectors, block: "color: #fff;")