Function assert_changed

vispy/visuals/shaders/tests/test_function.py:325–328

(*objs)

    ch_obj = C()

    def assert_changed(*objs):
        assert set(ch) == set(objs)
        while ch:
            ch.pop()

    fun1 = Function('void main(){$var1; $var2;}')
    fun1._dependents[ch_obj] = None