# This file is part of Hypothesis, which may be found at
# https://github.com/HypothesisWorks/hypothesis/
#
# Copyright the Hypothesis Authors.
# Individual contributors are listed in AUTHORS.rst and the git log.
#
# This Source Code Form is subject to the terms of the Mozilla Public License,
# v. 2.0. If a copy of the MPL was not distributed with this file, You can
# obtain one at https://mozilla.org/MPL/2.0/.

from hypothesis import given, strategies as st

from tests.common.debug import find_any, minimal

x = st.shared(st.integers())


@given(x, x)
def test_sharing_is_by_instance_by_default(a, b):
    assert a == b


@given(st.shared(st.integers(), key="hi"), st.shared(st.integers(), key="hi"))
def test_different_instances_with_the_same_key_are_shared(a, b):
    assert a == b


def test_different_instances_are_not_shared():
    find_any(
        st.tuples(st.shared(st.integers()), st.shared(st.integers())),
        lambda x: x[0] != x[1],
    )


def test_different_keys_are_not_shared():
    find_any(
        st.tuples(st.shared(st.integers(), key=1), st.shared(st.integers(), key=2)),
        lambda x: x[0] != x[1],
    )


def test_keys_and_default_are_not_shared():
    find_any(
        st.tuples(st.shared(st.integers(), key=1), st.shared(st.integers())),
        lambda x: x[0] != x[1],
    )


def test_can_simplify_shared_lists():
    xs = minimal(
        st.lists(st.shared(st.integers())), lambda x: len(x) >= 10 and x[0] != 0
    )
    assert xs == [1] * 10


def test_simplify_shared_linked_to_size():
    xs = minimal(st.lists(st.shared(st.integers())), lambda t: sum(t) >= 1000)
    assert sum(xs[:-1]) < 1000
    assert (xs[0] - 1) * len(xs) < 1000