Complete the test case.

test/DoCommandTest.py

@@ -152,6 +152,9 @@ class DoCommandTest(CommandTest.CommandTest):
         command = DoCommand.DoCommand(["3"], self.todolist, self.out, self.error)
         command.execute()
 
+        self.assertEquals(self.output, first_output + "x %s Baz p:1\nThe following todo item(s) became active:\nFoo id:1\n" % self.today)
+        self.assertEquals(self.errors, "")
+
     def test_activated_todos2(self):
         command = DoCommand.DoCommand(["7"], self.todolist, self.out, self.error)
         command.execute()