added tests for crack's xml parser

test/parser_test.rb

@@ -0,0 +1,27 @@
+require 'test_helper'
+
+class ParserTest < Test::Unit::TestCase
+  should "default to REXMLParser" do
+    Crack::XML.parser.should == Crack::REXMLParser
+  end
+
+  context "with a custom Parser" do
+	  class CustomParser
+			def self.parse(xml)
+				xml
+			end
+		end
+
+    setup do
+      Crack::XML.parser = CustomParser
+    end
+
+    should "use the custom Parser" do
+			Crack::XML.parse("<xml/>").should == "<xml/>"
+    end
+
+    teardown do
+      Crack::XML.parser = nil
+    end
+  end
+end