Merge branch 'master' of github.com:mbj/mutant

README.md

@@ -68,6 +68,17 @@ Private instance  methods: spec/unit/#{namespace}/#{class_name}/*_spec.rb
 Private singleton methods: spec/unit/#{namespace}/#{class_name}/class_methods/*_spec.rb
 ```
 
+#### Expansions:
+
+Symbolic operator like method are expanded. So for example ```Foo#<<``` is expanded to:
+```
+spec/unit/foo/left_shift_operator_spec.rb
+````
+
+The full list of expansion can be found here:
+
+https://github.com/mbj/mutant/blob/master/lib/mutant/constants.rb
+
 ### --rspec-unit
 
 This strategy executes all specs under ``./spec/unit`` for each mutation.

lib/mutant/reporter/cli.rb

@@ -270,7 +270,7 @@ module Mutant
       # @api private
       #
       def print_killer(color, word, killer)
-        puts(colorize(color, "#{word}: #{killer.identification} (%02.2fs)" % killer.runtime))
+        puts(colorize(color, "%s: %s (%02.2fs)" % [word, killer.identification, killer.runtime]))
       end
 
       # Test for output to tty