Merge pull request carrierwaveuploader#434 from commuter/add_descript…

…ion_to_matchers

add descriptions for matchers called without a string

lib/carrierwave/test/matchers.rb

@@ -13,16 +13,23 @@ class BeIdenticalTo # :nodoc:
         def initialize(expected)
           @expected = expected
         end
+
         def matches?(actual)
           @actual = actual
           FileUtils.identical?(@actual, @expected)
         end
+
         def failure_message
           "expected #{@actual.inspect} to be identical to #{@expected.inspect}"
         end
+
         def negative_failure_message
           "expected #{@actual.inspect} to not be identical to #{@expected.inspect}"
         end
+
+        def description
+          "be identical to #{@expected.inspect}"
+        end
       end
 
       def be_identical_to(expected)
@@ -47,6 +54,10 @@ def failure_message
         def negative_failure_message
           "expected #{@actual.inspect} not to have permissions #{@expected.to_s(8)}, but it did"
         end
+
+        def description
+          "have permissions #{@expected.to_s(8)}"
+        end
       end
 
       def have_permissions(expected)
@@ -75,6 +86,9 @@ def negative_failure_message
           "expected #{@actual.current_path.inspect} to be larger than #{@width} by #{@height}, but it wasn't."
         end
 
+        def description
+          "be no larger than #{@width} by #{@height}"
+        end
       end
 
       def be_no_larger_than(width, height)
@@ -103,6 +117,9 @@ def negative_failure_message
           "expected #{@actual.current_path.inspect} not to have an exact size of #{@width} by #{@height}, but it did."
         end
 
+        def description
+          "have an exact size of #{@width} by #{@height}"
+        end
       end
 
       def have_dimensions(width, height)