added RSpec and RSpec on Rails

[rails.git] / vendor / gems / rspec-1.1.2 / lib / spec / expectations / handler.rb

diff --git a/vendor/gems/rspec-1.1.2/lib/spec/expectations/handler.rb b/vendor/gems/rspec-1.1.2/lib/spec/expectations/handler.rb
new file mode 100644 (file)
index 0000000..e6dce08
--- /dev/null
+++ b/vendor/gems/rspec-1.1.2/lib/spec/expectations/handler.rb
@@ -0,0 +1,52 @@
+module Spec
+  module Expectations
+    class InvalidMatcherError < ArgumentError; end        
+    
+    module MatcherHandlerHelper
+      def describe_matcher(matcher)
+        matcher.respond_to?(:description) ? matcher.description : "[#{matcher.class.name} does not provide a description]"
+      end
+    end
+    
+    class ExpectationMatcherHandler        
+      class << self
+        include MatcherHandlerHelper
+        def handle_matcher(actual, matcher, &block)
+          unless matcher.respond_to?(:matches?)
+            raise InvalidMatcherError, "Expected a matcher, got #{matcher.inspect}."
+          end
+          
+          match = matcher.matches?(actual, &block)
+          ::Spec::Matchers.generated_description = "should #{describe_matcher(matcher)}"
+          Spec::Expectations.fail_with(matcher.failure_message) unless match
+        end
+      end
+    end
+
+    class NegativeExpectationMatcherHandler
+      class << self
+        include MatcherHandlerHelper
+        def handle_matcher(actual, matcher, &block)
+          unless matcher.respond_to?(:matches?)
+            raise InvalidMatcherError, "Expected a matcher, got #{matcher.inspect}."
+          end
+
+          unless matcher.respond_to?(:negative_failure_message)
+            Spec::Expectations.fail_with(
+<<-EOF
+Matcher does not support should_not.
+See Spec::Matchers for more information
+about matchers.
+EOF
+)
+          end
+          match = matcher.matches?(actual, &block)
+          ::Spec::Matchers.generated_description = "should not #{describe_matcher(matcher)}"
+          Spec::Expectations.fail_with(matcher.negative_failure_message) if match
+        end
+      end
+    end
+
+  end
+end
+