Dean Moldovan | 6fccf69 | 2016-10-11 01:12:48 +0200 | [diff] [blame] | 1 | import pytest |
Dean Moldovan | a0c1ccf | 2016-08-12 13:50:00 +0200 | [diff] [blame] | 2 | from pybind11_tests import ExampleMandA, ConstructorStats |
| 3 | |
| 4 | |
| 5 | def test_methods_and_attributes(): |
| 6 | instance1 = ExampleMandA() |
| 7 | instance2 = ExampleMandA(32) |
| 8 | |
| 9 | instance1.add1(instance2) |
| 10 | instance1.add2(instance2) |
| 11 | instance1.add3(instance2) |
| 12 | instance1.add4(instance2) |
| 13 | instance1.add5(instance2) |
| 14 | instance1.add6(32) |
| 15 | instance1.add7(32) |
| 16 | instance1.add8(32) |
| 17 | instance1.add9(32) |
| 18 | instance1.add10(32) |
| 19 | |
| 20 | assert str(instance1) == "ExampleMandA[value=320]" |
| 21 | assert str(instance2) == "ExampleMandA[value=32]" |
| 22 | assert str(instance1.self1()) == "ExampleMandA[value=320]" |
| 23 | assert str(instance1.self2()) == "ExampleMandA[value=320]" |
| 24 | assert str(instance1.self3()) == "ExampleMandA[value=320]" |
| 25 | assert str(instance1.self4()) == "ExampleMandA[value=320]" |
| 26 | assert str(instance1.self5()) == "ExampleMandA[value=320]" |
| 27 | |
| 28 | assert instance1.internal1() == 320 |
| 29 | assert instance1.internal2() == 320 |
| 30 | assert instance1.internal3() == 320 |
| 31 | assert instance1.internal4() == 320 |
| 32 | assert instance1.internal5() == 320 |
| 33 | |
| 34 | assert instance1.value == 320 |
| 35 | instance1.value = 100 |
| 36 | assert str(instance1) == "ExampleMandA[value=100]" |
| 37 | |
| 38 | cstats = ConstructorStats.get(ExampleMandA) |
| 39 | assert cstats.alive() == 2 |
| 40 | del instance1, instance2 |
| 41 | assert cstats.alive() == 0 |
| 42 | assert cstats.values() == ["32"] |
| 43 | assert cstats.default_constructions == 1 |
| 44 | assert cstats.copy_constructions == 3 |
| 45 | assert cstats.move_constructions >= 1 |
| 46 | assert cstats.copy_assignments == 0 |
| 47 | assert cstats.move_assignments == 0 |
Dean Moldovan | 6fccf69 | 2016-10-11 01:12:48 +0200 | [diff] [blame] | 48 | |
| 49 | |
Dean Moldovan | 5b7e190 | 2016-10-21 18:51:14 +0200 | [diff] [blame] | 50 | def test_properties(): |
| 51 | from pybind11_tests import TestProperties |
| 52 | |
| 53 | instance = TestProperties() |
| 54 | |
| 55 | assert instance.def_readonly == 1 |
| 56 | with pytest.raises(AttributeError): |
| 57 | instance.def_readonly = 2 |
| 58 | |
| 59 | instance.def_readwrite = 2 |
| 60 | assert instance.def_readwrite == 2 |
| 61 | |
| 62 | assert instance.def_property_readonly == 2 |
| 63 | with pytest.raises(AttributeError): |
| 64 | instance.def_property_readonly = 3 |
| 65 | |
| 66 | instance.def_property = 3 |
| 67 | assert instance.def_property == 3 |
| 68 | |
| 69 | |
| 70 | def test_static_properties(): |
| 71 | from pybind11_tests import TestProperties as Type |
| 72 | |
| 73 | assert Type.def_readonly_static == 1 |
| 74 | with pytest.raises(AttributeError): |
| 75 | Type.def_readonly_static = 2 |
| 76 | |
| 77 | Type.def_readwrite_static = 2 |
| 78 | assert Type.def_readwrite_static == 2 |
| 79 | |
| 80 | assert Type.def_property_readonly_static == 2 |
| 81 | with pytest.raises(AttributeError): |
| 82 | Type.def_property_readonly_static = 3 |
| 83 | |
| 84 | Type.def_property_static = 3 |
| 85 | assert Type.def_property_static == 3 |
| 86 | |
| 87 | |
Dean Moldovan | 03f627e | 2016-11-01 11:44:57 +0100 | [diff] [blame^] | 88 | @pytest.mark.parametrize("access", ["ro", "rw", "static_ro", "static_rw"]) |
| 89 | def test_property_return_value_policies(access): |
| 90 | from pybind11_tests import TestPropRVP |
| 91 | |
| 92 | if not access.startswith("static"): |
| 93 | obj = TestPropRVP() |
| 94 | else: |
| 95 | obj = TestPropRVP |
| 96 | |
| 97 | ref = getattr(obj, access + "_ref") |
| 98 | assert ref.value == 1 |
| 99 | ref.value = 2 |
| 100 | assert getattr(obj, access + "_ref").value == 2 |
| 101 | ref.value = 1 # restore original value for static properties |
| 102 | |
| 103 | copy = getattr(obj, access + "_copy") |
| 104 | assert copy.value == 1 |
| 105 | copy.value = 2 |
| 106 | assert getattr(obj, access + "_copy").value == 1 |
| 107 | |
| 108 | copy = getattr(obj, access + "_func") |
| 109 | assert copy.value == 1 |
| 110 | copy.value = 2 |
| 111 | assert getattr(obj, access + "_func").value == 1 |
| 112 | |
| 113 | |
| 114 | def test_property_rvalue_policy(): |
| 115 | """When returning an rvalue, the return value policy is automatically changed from |
| 116 | `reference(_internal)` to `move`. The following would not work otherwise.""" |
| 117 | from pybind11_tests import TestPropRVP |
| 118 | |
| 119 | instance = TestPropRVP() |
| 120 | o = instance.rvalue |
| 121 | assert o.value == 1 |
| 122 | o = TestPropRVP.static_rvalue |
| 123 | assert o.value == 1 |
| 124 | |
| 125 | |
Dean Moldovan | 6fccf69 | 2016-10-11 01:12:48 +0200 | [diff] [blame] | 126 | def test_dynamic_attributes(): |
Dean Moldovan | b8cb5ca | 2016-10-14 18:01:17 +0200 | [diff] [blame] | 127 | from pybind11_tests import DynamicClass, CppDerivedDynamicClass |
Dean Moldovan | 6fccf69 | 2016-10-11 01:12:48 +0200 | [diff] [blame] | 128 | |
| 129 | instance = DynamicClass() |
| 130 | assert not hasattr(instance, "foo") |
| 131 | assert "foo" not in dir(instance) |
| 132 | |
| 133 | # Dynamically add attribute |
| 134 | instance.foo = 42 |
| 135 | assert hasattr(instance, "foo") |
| 136 | assert instance.foo == 42 |
| 137 | assert "foo" in dir(instance) |
| 138 | |
| 139 | # __dict__ should be accessible and replaceable |
| 140 | assert "foo" in instance.__dict__ |
| 141 | instance.__dict__ = {"bar": True} |
| 142 | assert not hasattr(instance, "foo") |
| 143 | assert hasattr(instance, "bar") |
| 144 | |
| 145 | with pytest.raises(TypeError) as excinfo: |
| 146 | instance.__dict__ = [] |
| 147 | assert str(excinfo.value) == "__dict__ must be set to a dictionary, not a 'list'" |
| 148 | |
| 149 | cstats = ConstructorStats.get(DynamicClass) |
| 150 | assert cstats.alive() == 1 |
| 151 | del instance |
| 152 | assert cstats.alive() == 0 |
| 153 | |
| 154 | # Derived classes should work as well |
Dean Moldovan | b8cb5ca | 2016-10-14 18:01:17 +0200 | [diff] [blame] | 155 | class PythonDerivedDynamicClass(DynamicClass): |
Dean Moldovan | 6fccf69 | 2016-10-11 01:12:48 +0200 | [diff] [blame] | 156 | pass |
| 157 | |
Dean Moldovan | b8cb5ca | 2016-10-14 18:01:17 +0200 | [diff] [blame] | 158 | for cls in CppDerivedDynamicClass, PythonDerivedDynamicClass: |
| 159 | derived = cls() |
| 160 | derived.foobar = 100 |
| 161 | assert derived.foobar == 100 |
Dean Moldovan | 6fccf69 | 2016-10-11 01:12:48 +0200 | [diff] [blame] | 162 | |
Dean Moldovan | b8cb5ca | 2016-10-14 18:01:17 +0200 | [diff] [blame] | 163 | assert cstats.alive() == 1 |
| 164 | del derived |
| 165 | assert cstats.alive() == 0 |
Dean Moldovan | 6fccf69 | 2016-10-11 01:12:48 +0200 | [diff] [blame] | 166 | |
| 167 | |
| 168 | def test_cyclic_gc(): |
| 169 | from pybind11_tests import DynamicClass |
| 170 | |
| 171 | # One object references itself |
| 172 | instance = DynamicClass() |
| 173 | instance.circular_reference = instance |
| 174 | |
| 175 | cstats = ConstructorStats.get(DynamicClass) |
| 176 | assert cstats.alive() == 1 |
| 177 | del instance |
| 178 | assert cstats.alive() == 0 |
| 179 | |
| 180 | # Two object reference each other |
| 181 | i1 = DynamicClass() |
| 182 | i2 = DynamicClass() |
| 183 | i1.cycle = i2 |
| 184 | i2.cycle = i1 |
| 185 | |
| 186 | assert cstats.alive() == 2 |
| 187 | del i1, i2 |
| 188 | assert cstats.alive() == 0 |