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How to use clear_change_tracking method in hypothesis

Best Python code snippet using hypothesis

engine.py

Source:engine.py

...1601                new_blocks[i] = int_to_bytes(v + o, len(blocked[i]))1602            return self.incorporate_new_buffer(hbytes().join(new_blocks))1603        new_offset = Integer.shrink(offset, reoffset, random=self.random)1604        if new_offset == offset:1605            self.clear_change_tracking()1606    def shrink_offset_pairs(self):1607        """Lower any two blocks offset from each other the same ammount.1608        Before this shrink pass, two blocks explicitly offset from each1609        other would not get minimized properly:1610         >>> b = st.integers(0, 255)1611         >>> find(st.tuples(b, b), lambda x: x[0] == x[1] + 1)1612        (149,148)1613        This expensive (O(n^2)) pass goes through every pair of non-zero1614        blocks in the current shrink target and sees if the shrink1615        target can be improved by applying an offset to both of them.1616        """1617        current = [self.shrink_target.buffer[u:v] for u, v in self.blocks]1618        def int_from_block(i):1619            return int_from_bytes(current[i])1620        def block_len(i):1621            u, v = self.blocks[i]1622            return v - u1623        # Try reoffseting every pair1624        def reoffset_pair(pair, o):1625            n = len(self.blocks)1626            # Number of blocks may have changed, need to validate1627            valid_pair = [1628                p for p in pair if p < n and int_from_block(p) > 0 and1629                self.is_payload_block(p)1630            ]1631            if len(valid_pair) < 2:1632                return1633            m = min([int_from_block(p) for p in valid_pair])1634            new_blocks = [self.shrink_target.buffer[u:v]1635                          for u, v in self.blocks]1636            for i in valid_pair:1637                new_blocks[i] = int_to_bytes(1638                    int_from_block(i) + o - m, block_len(i))1639            buffer = hbytes().join(new_blocks)1640            return self.incorporate_new_buffer(buffer)1641        i = 01642        while i < len(self.blocks):1643            if self.is_payload_block(i) and int_from_block(i) > 0:1644                j = i + 11645                while j < len(self.shrink_target.blocks):1646                    block_val = int_from_block(j)1647                    i_block_val = int_from_block(i)1648                    if self.is_payload_block(j) \1649                       and block_val > 0 and i_block_val > 0:1650                        offset = min(int_from_block(i),1651                                     int_from_block(j))1652                        # Save current before shrinking1653                        current = [self.shrink_target.buffer[u:v]1654                                   for u, v in self.blocks]1655                        Integer.shrink(1656                            offset, lambda o: reoffset_pair((i, j), o),1657                            random=self.random1658                        )1659                    j += 11660            i += 11661    def mark_shrinking(self, blocks):1662        """Mark each of these blocks as a shrinking block: That is, lowering1663        its value lexicographically may cause less data to be drawn after."""1664        t = self.shrink_target1665        for i in blocks:1666            if self.__shrinking_block_cache.get(i) is True:1667                continue1668            self.__shrinking_block_cache[i] = True1669            prefix = t.buffer[:t.blocks[i][0]]1670            self.__shrinking_prefixes.add(prefix)1671    def clear_change_tracking(self):1672        self.__changed_blocks.clear()1673    def mark_changed(self, i):1674        self.__changed_blocks.add(i)1675    def update_shrink_target(self, new_target):1676        assert new_target.frozen1677        if self.shrink_target is not None:1678            current = self.shrink_target.buffer1679            new = new_target.buffer1680            assert sort_key(new) < sort_key(current)1681            self.shrinks += 11682            if new_target.blocks != self.shrink_target.blocks:1683                self.clear_change_tracking()1684            else:1685                for i, (u, v) in enumerate(self.shrink_target.blocks):1686                    if (1687                        i not in self.__changed_blocks and1688                        current[u:v] != new[u:v]1689                    ):1690                        self.mark_changed(i)1691        else:1692            self.__changed_blocks = set()1693        self.shrink_target = new_target1694        self.__shrinking_block_cache = {}1695    def try_shrinking_blocks(self, blocks, b):1696        """Attempts to replace each block in the blocks list with b. Returns1697        True if it succeeded (which may include some additional modifications...

shrinker.py

Source:shrinker.py

...643            for i, v in zip(changed, ints):644                new_blocks[i] = int_to_bytes(v + o, len(blocked[i]))645            return self.incorporate_new_buffer(b"".join(new_blocks))646        Integer.shrink(offset, reoffset, random=self.random)647        self.clear_change_tracking()648    def clear_change_tracking(self):649        self.__last_checked_changed_at = self.shrink_target650        self.__all_changed_blocks = set()651    def mark_changed(self, i):652        self.__changed_blocks.add(i)653    @property654    def __changed_blocks(self):655        if self.__last_checked_changed_at is not self.shrink_target:656            prev_target = self.__last_checked_changed_at657            new_target = self.shrink_target658            assert prev_target is not new_target659            prev = prev_target.buffer660            new = new_target.buffer661            assert sort_key(new) < sort_key(prev)662            if (...

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