1 files changed, 171 insertions, 0 deletions
diff --git a/3rdparty/pybind11/tests/test_sequences_and_iterators.py b/3rdparty/pybind11/tests/test_sequences_and_iterators.py
new file mode 100644
index 00000000..6bd16064
--- /dev/null
+++ b/3rdparty/pybind11/tests/test_sequences_and_iterators.py
@@ -0,0 +1,171 @@
+import pytest
+from pybind11_tests import sequences_and_iterators as m
+from pybind11_tests import ConstructorStats
+
+
+def isclose(a, b, rel_tol=1e-05, abs_tol=0.0):
+    """Like math.isclose() from Python 3.5"""
+    return abs(a - b) <= max(rel_tol * max(abs(a), abs(b)), abs_tol)
+
+
+def allclose(a_list, b_list, rel_tol=1e-05, abs_tol=0.0):
+    return all(isclose(a, b, rel_tol=rel_tol, abs_tol=abs_tol) for a, b in zip(a_list, b_list))
+
+
+def test_generalized_iterators():
+    assert list(m.IntPairs([(1, 2), (3, 4), (0, 5)]).nonzero()) == [(1, 2), (3, 4)]
+    assert list(m.IntPairs([(1, 2), (2, 0), (0, 3), (4, 5)]).nonzero()) == [(1, 2)]
+    assert list(m.IntPairs([(0, 3), (1, 2), (3, 4)]).nonzero()) == []
+
+    assert list(m.IntPairs([(1, 2), (3, 4), (0, 5)]).nonzero_keys()) == [1, 3]
+    assert list(m.IntPairs([(1, 2), (2, 0), (0, 3), (4, 5)]).nonzero_keys()) == [1]
+    assert list(m.IntPairs([(0, 3), (1, 2), (3, 4)]).nonzero_keys()) == []
+
+    # __next__ must continue to raise StopIteration
+    it = m.IntPairs([(0, 0)]).nonzero()
+    for _ in range(3):
+        with pytest.raises(StopIteration):
+            next(it)
+
+    it = m.IntPairs([(0, 0)]).nonzero_keys()
+    for _ in range(3):
+        with pytest.raises(StopIteration):
+            next(it)
+
+
+def test_sliceable():
+    sliceable = m.Sliceable(100)
+    assert sliceable[::] == (0, 100, 1)
+    assert sliceable[10::] == (10, 100, 1)
+    assert sliceable[:10:] == (0, 10, 1)
+    assert sliceable[::10] == (0, 100, 10)
+    assert sliceable[-10::] == (90, 100, 1)
+    assert sliceable[:-10:] == (0, 90, 1)
+    assert sliceable[::-10] == (99, -1, -10)
+    assert sliceable[50:60:1] == (50, 60, 1)
+    assert sliceable[50:60:-1] == (50, 60, -1)
+
+
+def test_sequence():
+    cstats = ConstructorStats.get(m.Sequence)
+
+    s = m.Sequence(5)
+    assert cstats.values() == ['of size', '5']
+
+    assert "Sequence" in repr(s)
+    assert len(s) == 5
+    assert s[0] == 0 and s[3] == 0
+    assert 12.34 not in s
+    s[0], s[3] = 12.34, 56.78
+    assert 12.34 in s
+    assert isclose(s[0], 12.34) and isclose(s[3], 56.78)
+
+    rev = reversed(s)
+    assert cstats.values() == ['of size', '5']
+
+    rev2 = s[::-1]
+    assert cstats.values() == ['of size', '5']
+
+    it = iter(m.Sequence(0))
+    for _ in range(3):  # __next__ must continue to raise StopIteration
+        with pytest.raises(StopIteration):
+            next(it)
+    assert cstats.values() == ['of size', '0']
+
+    expected = [0, 56.78, 0, 0, 12.34]
+    assert allclose(rev, expected)
+    assert allclose(rev2, expected)
+    assert rev == rev2
+
+    rev[0::2] = m.Sequence([2.0, 2.0, 2.0])
+    assert cstats.values() == ['of size', '3', 'from std::vector']
+
+    assert allclose(rev, [2, 56.78, 2, 0, 2])
+
+    assert cstats.alive() == 4
+    del it
+    assert cstats.alive() == 3
+    del s
+    assert cstats.alive() == 2
+    del rev
+    assert cstats.alive() == 1
+    del rev2
+    assert cstats.alive() == 0
+
+    assert cstats.values() == []
+    assert cstats.default_constructions == 0
+    assert cstats.copy_constructions == 0
+    assert cstats.move_constructions >= 1
+    assert cstats.copy_assignments == 0
+    assert cstats.move_assignments == 0
+
+
+def test_map_iterator():
+    sm = m.StringMap({'hi': 'bye', 'black': 'white'})
+    assert sm['hi'] == 'bye'
+    assert len(sm) == 2
+    assert sm['black'] == 'white'
+
+    with pytest.raises(KeyError):
+        assert sm['orange']
+    sm['orange'] = 'banana'
+    assert sm['orange'] == 'banana'
+
+    expected = {'hi': 'bye', 'black': 'white', 'orange': 'banana'}
+    for k in sm:
+        assert sm[k] == expected[k]
+    for k, v in sm.items():
+        assert v == expected[k]
+
+    it = iter(m.StringMap({}))
+    for _ in range(3):  # __next__ must continue to raise StopIteration
+        with pytest.raises(StopIteration):
+            next(it)
+
+
+def test_python_iterator_in_cpp():
+    t = (1, 2, 3)
+    assert m.object_to_list(t) == [1, 2, 3]
+    assert m.object_to_list(iter(t)) == [1, 2, 3]
+    assert m.iterator_to_list(iter(t)) == [1, 2, 3]
+
+    with pytest.raises(TypeError) as excinfo:
+        m.object_to_list(1)
+    assert "object is not iterable" in str(excinfo.value)
+
+    with pytest.raises(TypeError) as excinfo:
+        m.iterator_to_list(1)
+    assert "incompatible function arguments" in str(excinfo.value)
+
+    def bad_next_call():
+        raise RuntimeError("py::iterator::advance() should propagate errors")
+
+    with pytest.raises(RuntimeError) as excinfo:
+        m.iterator_to_list(iter(bad_next_call, None))
+    assert str(excinfo.value) == "py::iterator::advance() should propagate errors"
+
+    lst = [1, None, 0, None]
+    assert m.count_none(lst) == 2
+    assert m.find_none(lst) is True
+    assert m.count_nonzeros({"a": 0, "b": 1, "c": 2}) == 2
+
+    r = range(5)
+    assert all(m.tuple_iterator(tuple(r)))
+    assert all(m.list_iterator(list(r)))
+    assert all(m.sequence_iterator(r))
+
+
+def test_iterator_passthrough():
+    """#181: iterator passthrough did not compile"""
+    from pybind11_tests.sequences_and_iterators import iterator_passthrough
+
+    assert list(iterator_passthrough(iter([3, 5, 7, 9, 11, 13, 15]))) == [3, 5, 7, 9, 11, 13, 15]
+
+
+def test_iterator_rvp():
+    """#388: Can't make iterators via make_iterator() with different r/v policies """
+    import pybind11_tests.sequences_and_iterators as m
+
+    assert list(m.make_iterator_1()) == [1, 2, 3]
+    assert list(m.make_iterator_2()) == [1, 2, 3]
+    assert not isinstance(m.make_iterator_1(), type(m.make_iterator_2()))