def test_cast(self):
from java.lang import Boolean, Object
b = Boolean(True)
b_Object = cast(Object, b)
self.assertIsNot(b, b_Object)
self.assertEqual(b, b_Object)
self.assertIs(Boolean.getClass(), b.getClass())
self.assertIs(Boolean.getClass(), b_Object.getClass())
self.assertIsNot(Object.getClass(), b_Object.getClass())
self.assertIs(b_Object, cast(Object, b))
self.assertIs(b, cast(Boolean, b_Object))
for obj in [Boolean, "Ljava/lang/Boolean;"]:
with self.subTest(obj=obj):
with self.assertRaisesRegex(TypeError, "cannot create java.lang.Boolean "
"proxy from java.lang.Object instance"):
cast(obj, Object())
with self.assertRaisesRegex(jclass("java.lang.NoClassDefFoundError"),
"java.lang.Nonexistent"):
cast("Ljava/lang/Nonexistent;", Object())
with self.assertRaisesRegex(ValueError, "Invalid JNI signature: 'java.lang.Object'"):
cast("java.lang.Object", Object())
for obj in [0, True, None, int, str]:
with self.subTest(obj=obj):
with self.assertRaisesRegex(TypeError, f"{obj!r} is not a Java type"):
cast(obj, Object())
def test_cast(self):
from java.lang import Boolean, Object
b = Boolean(True)
b_Object = cast(Object, b)
self.assertIsNot(b, b_Object)
self.assertEqual(b, b_Object)
self.assertIs(Boolean.getClass(), b.getClass())
self.assertIs(Boolean.getClass(), b_Object.getClass())
self.assertIsNot(Object.getClass(), b_Object.getClass())
self.assertIs(b_Object, cast(Object, b))
self.assertIs(b, cast(Boolean, b_Object))
with self.assertRaisesRegexp(
TypeError, "cannot create java.lang.Boolean proxy from "
"java.lang.Object instance"):
cast(Boolean, Object())
