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153 lines
4.3 KiB
153 lines
4.3 KiB
from __future__ import annotations |
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import pytest |
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from pybind11_tests import ConstructorStats |
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from pybind11_tests import operators as m |
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def test_operator_overloading(): |
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v1 = m.Vector2(1, 2) |
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v2 = m.Vector(3, -1) |
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v3 = m.Vector2(1, 2) # Same value as v1, but different instance. |
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assert v1 is not v3 |
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assert str(v1) == "[1.000000, 2.000000]" |
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assert str(v2) == "[3.000000, -1.000000]" |
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assert str(-v2) == "[-3.000000, 1.000000]" |
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assert str(v1 + v2) == "[4.000000, 1.000000]" |
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assert str(v1 - v2) == "[-2.000000, 3.000000]" |
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assert str(v1 - 8) == "[-7.000000, -6.000000]" |
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assert str(v1 + 8) == "[9.000000, 10.000000]" |
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assert str(v1 * 8) == "[8.000000, 16.000000]" |
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assert str(v1 / 8) == "[0.125000, 0.250000]" |
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assert str(8 - v1) == "[7.000000, 6.000000]" |
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assert str(8 + v1) == "[9.000000, 10.000000]" |
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assert str(8 * v1) == "[8.000000, 16.000000]" |
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assert str(8 / v1) == "[8.000000, 4.000000]" |
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assert str(v1 * v2) == "[3.000000, -2.000000]" |
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assert str(v2 / v1) == "[3.000000, -0.500000]" |
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assert v1 == v3 |
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assert v1 != v2 |
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assert hash(v1) == 4 |
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# TODO(eric.cousineau): Make this work. |
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# assert abs(v1) == "abs(Vector2)" |
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v1 += 2 * v2 |
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assert str(v1) == "[7.000000, 0.000000]" |
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v1 -= v2 |
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assert str(v1) == "[4.000000, 1.000000]" |
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v1 *= 2 |
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assert str(v1) == "[8.000000, 2.000000]" |
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v1 /= 16 |
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assert str(v1) == "[0.500000, 0.125000]" |
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v1 *= v2 |
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assert str(v1) == "[1.500000, -0.125000]" |
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v2 /= v1 |
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assert str(v2) == "[2.000000, 8.000000]" |
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cstats = ConstructorStats.get(m.Vector2) |
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assert cstats.alive() == 3 |
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del v1 |
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assert cstats.alive() == 2 |
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del v2 |
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assert cstats.alive() == 1 |
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del v3 |
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assert cstats.alive() == 0 |
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assert cstats.values() == [ |
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"[1.000000, 2.000000]", |
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"[3.000000, -1.000000]", |
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"[1.000000, 2.000000]", |
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"[-3.000000, 1.000000]", |
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"[4.000000, 1.000000]", |
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"[-2.000000, 3.000000]", |
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"[-7.000000, -6.000000]", |
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"[9.000000, 10.000000]", |
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"[8.000000, 16.000000]", |
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"[0.125000, 0.250000]", |
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"[7.000000, 6.000000]", |
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"[9.000000, 10.000000]", |
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"[8.000000, 16.000000]", |
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"[8.000000, 4.000000]", |
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"[3.000000, -2.000000]", |
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"[3.000000, -0.500000]", |
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"[6.000000, -2.000000]", |
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] |
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assert cstats.default_constructions == 0 |
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assert cstats.copy_constructions == 0 |
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assert cstats.move_constructions >= 10 |
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assert cstats.copy_assignments == 0 |
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assert cstats.move_assignments == 0 |
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def test_operators_notimplemented(): |
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"""#393: need to return NotSupported to ensure correct arithmetic operator behavior""" |
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c1, c2 = m.C1(), m.C2() |
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assert c1 + c1 == 11 |
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assert c2 + c2 == 22 |
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assert c2 + c1 == 21 |
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assert c1 + c2 == 12 |
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def test_nested(): |
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"""#328: first member in a class can't be used in operators""" |
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a = m.NestA() |
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b = m.NestB() |
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c = m.NestC() |
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a += 10 |
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assert m.get_NestA(a) == 13 |
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b.a += 100 |
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assert m.get_NestA(b.a) == 103 |
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c.b.a += 1000 |
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assert m.get_NestA(c.b.a) == 1003 |
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b -= 1 |
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assert m.get_NestB(b) == 3 |
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c.b -= 3 |
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assert m.get_NestB(c.b) == 1 |
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c *= 7 |
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assert m.get_NestC(c) == 35 |
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abase = a.as_base() |
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assert abase.value == -2 |
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a.as_base().value += 44 |
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assert abase.value == 42 |
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assert c.b.a.as_base().value == -2 |
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c.b.a.as_base().value += 44 |
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assert c.b.a.as_base().value == 42 |
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del c |
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pytest.gc_collect() |
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del a # Shouldn't delete while abase is still alive |
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pytest.gc_collect() |
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assert abase.value == 42 |
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del abase, b |
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pytest.gc_collect() |
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def test_overriding_eq_reset_hash(): |
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assert m.Comparable(15) is not m.Comparable(15) |
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assert m.Comparable(15) == m.Comparable(15) |
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with pytest.raises(TypeError) as excinfo: |
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hash(m.Comparable(15)) |
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assert str(excinfo.value).startswith("unhashable type:") |
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for hashable in (m.Hashable, m.Hashable2): |
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assert hashable(15) is not hashable(15) |
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assert hashable(15) == hashable(15) |
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assert hash(hashable(15)) == 15 |
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assert hash(hashable(15)) == hash(hashable(15)) |
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def test_return_set_of_unhashable(): |
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with pytest.raises(TypeError) as excinfo: |
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m.get_unhashable_HashMe_set() |
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assert str(excinfo.value.__cause__).startswith("unhashable type:")
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