+/**
+ * GTestFixtureFunc:
+ * @fixture: the test fixture
+ * @user_data: the data provided when registering the test
+ *
+ * The type used for functions that operate on test fixtures. This is
+ * used for the fixture setup and teardown functions as well as for the
+ * testcases themselves.
+ *
+ * @user_data is a pointer to the data that was given when registering
+ * the test case.
+ *
+ * @fixture will be a pointer to the area of memory allocated by the
+ * test framework, of the size requested. If the requested size was
+ * zero then @fixture will be equal to @user_data.
+ **/