Added minitest 1.3.0

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19740 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/minitest/mock.rb

@@ -0,0 +1,37 @@
+############################################################
+# This file is imported from a different project.
+# DO NOT make modifications in this repo.
+# File a patch instead and assign it to Ryan Davis
+############################################################
+
+class MockExpectationError < StandardError; end
+
+module MiniTest
+  class Mock
+    def initialize
+      @expected_calls = {}
+      @actual_calls = Hash.new {|h,k| h[k] = [] }
+    end
+
+    def expect(name, retval, args=[])
+      n, r, a = name, retval, args # for the closure below
+      @expected_calls[name] = { :retval => retval, :args => args }
+      self.class.__send__(:define_method, name) { |*x|
+        raise ArgumentError unless @expected_calls[n][:args].size == x.size
+        @actual_calls[n] << { :retval => r, :args => x }
+        retval
+      }
+      self
+    end
+
+    def verify
+      @expected_calls.each_key do |name|
+        expected = @expected_calls[name]
+        msg = "expected #{name}, #{expected.inspect}"
+        raise MockExpectationError, msg unless
+          @actual_calls.has_key? name and @actual_calls[name].include?(expected)
+      end
+      true
+    end
+  end
+end