Function assert_immutability

tests/python/relax/test_binding_rewrite.py:39–43

(rwt, original_dfb, original_root_fn)

def assert_immutability(rwt, original_dfb, original_root_fn):
    assert rwt.mutated_dfb() != original_dfb
    assert rwt.mutated_root_fn() != original_root_fn
    assert rwt.mutated_root_fn().body.blocks[0] != original_dfb
    assert rwt.mutated_root_fn().body.blocks[0] == rwt.mutated_dfb()


def test_null_construct():