def test_attach(self):
'''
Tests the following:
1. Attaching to a registered pdarray
2. The registered and attached pdarrays are equal
3. The attached pdarray is deleted server-side following
unregister of registered pdarray and invocation of
ak.clear()
4. method invocation on cleared attached array raises RuntimeError
'''
ar_array = self.a_array.register('test_int64_a')
aar_array = ak.attach_pdarray('test_int64_a')
self.assertEqual(ar_array.name, aar_array.name)
self.assertTrue(
(ar_array.to_ndarray() == aar_array.to_ndarray()).all())
ak.disconnect()
ak.connect(server=ArkoudaTest.server, port=ArkoudaTest.port)
aar_array = ak.attach_pdarray('test_int64_a')
self.assertEqual(ar_array.name, aar_array.name)
self.assertTrue(
(ar_array.to_ndarray() == aar_array.to_ndarray()).all())
ar_array.unregister()
ak.clear()
with self.assertRaises(RuntimeError):
str(aar_array)
with self.assertRaises(RuntimeError):
repr(aar_array)
def test_attach_weak_binding(self):
"""
Ultimately pdarrayclass issues delete calls to the server when a bound object goes out of scope, if you bind
to a server object more than once and one of those goes out of scope it affects all other references to it.
"""
cleanup()
a = ak.ones(3, dtype=ak.int64).register("a_reg")
self.assertTrue(str(a), "Expected to pass")
b = ak.attach_pdarray("a_reg")
b.unregister()
b = None # Force out of scope
with self.assertRaises(RuntimeError):
str(a)