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How to use stop_example method in hypothesis

Best Python code snippet using hypothesis

tstl_hypothesis.py

Source:tstl_hypothesis.py

...46    while True:47        data.start_example(CHOICE)48        i = data.draw_bits(n_bits)49        if i >= n:50            data.stop_example(discard=True)51            continue52        data.stop_example()53        return i54FILTERED_ACTIONS = calc_label_from_name("FILTERED ACTIONS")55@click.group()56@click.option('--sut-file')57@click.option('--log-file')58@click.option('--seed')59@click.option('--n-steps')60@click.pass_context61def tstl(ctx, sut_file, log_file, seed, n_steps):62    eng.BUFFER_SIZE = 10 ** 663    eng.MAX_SHRINKS = 10 ** 664    with open(sut_file) as i:65        source = i.read()66    exec_globals = {}67    exec(source, exec_globals)68    sut_class = exec_globals["sut"]69    seed = int(seed)70    n_steps = int(n_steps)71    def run_tstl(data):72        data.extra_information.tstl_steps = getattr(data, 'tstl_steps', [])73        run_checks = False74        count = 075        sut = sut_class()76        sut.restart()77        random.seed(0)78        actions = list(sut.actions())79        actions.sort(key=lambda t: t[0])80        while True:81            # We draw a value which in normal random mode will almost never be82            # zero, but when we are shrinking can be easily turned into a zero.83            data.start_example(STEP_LABEL)84            if count >= n_steps:85                should_continue = data.draw_bits(64, forced=0)86            else:87                should_continue = data.draw_bits(64)88            if not should_continue:89                data.stop_example()90                break91            count_discarded = data.draw_bits(64) == 092            count += 193            if count_discarded:94                data.start_example(CHOICE)95                i = choice(data, len(actions))96                _, guard, _ = actions[i]97                if not guard():98                    data.stop_example(discard=False)99                    continue100                else:101                    data.stop_example(discard=False)102            else:103                for _ in range(3):104                    data.start_example(CHOICE)105                    i = choice(data, len(actions))106                    _, guard, _ = actions[i]107                    succeeded = guard()108                    data.stop_example(discard=not succeeded)109                    if succeeded:110                        break111                else:112                    data.start_example(FILTERED_ACTIONS)113                    valid_actions = [i for i in range(len(actions)) if actions[i][1]()]114                    if not valid_actions:115                        data.mark_invalid()116                    j = choice(data, len(valid_actions))117                    i = valid_actions[j]118                    data.stop_example(discard=True)119                    data.draw_bits(len(actions).bit_length(), forced=i)120            name, guard, action = actions[i]121            assert guard()122            data.stop_example()123            data.extra_information.tstl_steps.append(name)124            failure = None125            try:126                with timeout(5):127                    action()128                    if run_checks and not sut.check():129                        failure = sut.failure()130            except TimeoutExpired:131                data.mark_invalid()132            # FIXME: Sympy specific hack133            except RecursionError:134                data.mark_invalid()135            except StopTest:136                raise...

collections.py

Source:collections.py

...84        while len(result) < self.max_size:85            data.start_example()86            more = cu.biased_coin(data, stopping_value)87            if not more:88                data.stop_example()89                if len(result) < self.min_size:90                    continue91                else:92                    break93            value = data.draw(self.element_strategy)94            data.stop_example()95            result.append(value)96        else:97            cu.write(data, b'\0')98        return result99    def __repr__(self):100        return (101            'ListStrategy(%r, min_size=%r, average_size=%r, max_size=%r)'102        ) % (103            self.element_strategy, self.min_size, self.average_length,104            self.max_size105        )106class UniqueListStrategy(SearchStrategy):107    def __init__(108        self,109        elements, min_size, max_size, average_size,110        key111    ):112        super(UniqueListStrategy, self).__init__()113        assert min_size <= average_size <= max_size114        self.min_size = min_size115        self.max_size = max_size116        self.average_size = average_size117        self.element_strategy = elements118        self.key = key119    def validate(self):120        self.element_strategy.validate()121    Parameter = namedtuple(122        'Parameter', ('parameter_seed', 'parameter')123    )124    def do_draw(self, data):125        seen = set()126        result = []127        if self.max_size == self.min_size:128            while len(result) < self.max_size:129                v = data.draw(self.element_strategy)130                k = self.key(v)131                if k not in seen:132                    result.append(v)133                    seen.add(k)134            return result135        stopping_value = 1 - 1.0 / (1 + self.average_size)136        duplicates = 0137        while len(result) < self.max_size:138            data.start_example()139            if len(result) >= self.min_size:140                more = cu.biased_coin(data, stopping_value)141            else:142                more = True143            if not more:144                data.stop_example()145                break146            value = data.draw(self.element_strategy)147            data.stop_example()148            k = self.key(value)149            if k in seen:150                duplicates += 1151                assume(duplicates <= len(result))152                continue153            seen.add(k)154            result.append(value)155        assume(len(result) >= self.min_size)156        return result157class FixedKeysDictStrategy(MappedSearchStrategy):158    """A strategy which produces dicts with a fixed set of keys, given a159    strategy for each of their equivalent values.160    e.g. {'foo' : some_int_strategy} would161    generate dicts with the single key 'foo' mapping to some integer....

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