Refactors common tests/helpers into a module

Author: zmoazeni

test/csscss/parser/background_test.rb

@@ -3,15 +3,13 @@
 module Csscss::Parser
   module Background
     describe Background do
+      include CommonParserTests
+
       before do
         @parser = Parser.new
         @trans = Transformer.new
       end
 
-      def trans(s)
-        @trans.apply(@parser.parse(s))
-      end
-
       it "parses position" do
         @parser.bg_position.must_parse("10.2%")
         @parser.bg_position.must_parse("left")
@@ -47,11 +45,6 @@ def trans(s)
 
         trans("#fff").must_equal([dec("background-color", "#fff")])
         trans("BLACK").must_equal([dec("background-color", "black")])
-        trans("inherit").must_equal([])
-      end
-
-      it "doesn't parse unknown values" do
-        @parser.wont_parse("foo")
       end
 
       it "tries the parse and returns false if it doesn't work" do

test/csscss/parser/list_style_test.rb

@@ -3,15 +3,13 @@
 module Csscss::Parser
   module ListStyle
     describe ListStyle do
+      include CommonParserTests
+
       before do
         @parser = Parser.new
         @trans = Transformer.new
       end
 
-      def trans(s)
-        @trans.apply(@parser.parse(s))
-      end
-
       it "converts shorthand rules to longhand" do
         trans("circle outside url('foo.jpg')").must_equal([
           dec("list-style-type", "circle"),
@@ -20,14 +18,6 @@ def trans(s)
         ])
       end
 
-      it "parses inherit" do
-        trans("inherit").must_equal([])
-      end
-
-      it "doesn't parse unknown values" do
-        @parser.wont_parse("foo")
-      end
-
       it "tries the parse and returns false if it doesn't work" do
         @parser.try_parse("foo").must_equal(false)
         parsed = @parser.try_parse("circle")

test/test_helper.rb

@@ -38,3 +38,26 @@ def assert_not_parse(parser, string)
 
 Parslet::Atoms::DSL.infect_an_assertion :assert_parse, :must_parse, :do_not_flip
 Parslet::Atoms::DSL.infect_an_assertion :assert_not_parse, :wont_parse, :do_not_flip
+
+module CommonParserTests
+  def self.included(base)
+    base.send(:include, Helpers)
+    base.instance_eval do
+      describe "common tests" do
+        it "parses inherit" do
+          trans("inherit").must_equal([])
+        end
+
+        it "doesn't parse unknown values" do
+          @parser.wont_parse("foo")
+        end
+      end
+    end
+  end
+
+  module Helpers
+    def trans(s)
+      @trans.apply(@parser.parse(s))
+    end
+  end
+end