How to use test_function_with_poison method in hypothesis

Best Python code snippet using hypothesis

test_poisoned_trees.py

Source: test_poisoned_trees.py Github

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...78 # must be preserved. The marker means that we are not allow to rely on79 # discarding the end of the buffer to get the desired shrink.80 u = starts[i]81 marker = bytes([1, 2, 3, 4])82 def test_function_with_poison(data):83 v = data.draw(strat)84 m = data.draw_bytes(len(marker))85 if POISON in v and m == marker:86 data.mark_interesting()87 runner = ConjectureRunner(88 test_function_with_poison, random=random, settings=TEST_SETTINGS89 )90 runner.cached_test_function(91 data.buffer[:u] + bytes([255]) * 4 + data.buffer[u + 4 :] + marker92 )93 assert runner.interesting_examples94 runner.shrink_interesting_examples()95 (shrunk,) = runner.interesting_examples.values()96 assert ConjectureData.for_buffer(shrunk.buffer).draw(strat) == (POISON,)

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