lightning/tests/utilities/parsing.py

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import pytest
from pytorch_lightning.utilities.parsing import lightning_getattr, lightning_hasattr, lightning_setattr
def _get_test_cases():
class TestHparamsNamespace:
learning_rate = 1
TestHparamsDict = {'learning_rate': 2}
class TestModel1: # test for namespace
learning_rate = 0
model1 = TestModel1()
class TestModel2: # test for hparams namespace
hparams = TestHparamsNamespace()
model2 = TestModel2()
class TestModel3: # test for hparams dict
hparams = TestHparamsDict
model3 = TestModel3()
class TestModel4: # fail case
batch_size = 1
model4 = TestModel4()
return model1, model2, model3, model4
def test_lightning_hasattr(tmpdir):
""" Test that the lightning_hasattr works in all cases"""
model1, model2, model3, model4 = _get_test_cases()
assert lightning_hasattr(model1, 'learning_rate'), \
'lightning_hasattr failed to find namespace variable'
assert lightning_hasattr(model2, 'learning_rate'), \
'lightning_hasattr failed to find hparams namespace variable'
assert lightning_hasattr(model3, 'learning_rate'), \
'lightning_hasattr failed to find hparams dict variable'
assert not lightning_hasattr(model4, 'learning_rate'), \
'lightning_hasattr found variable when it should not'
def test_lightning_getattr(tmpdir):
""" Test that the lightning_getattr works in all cases"""
models = _get_test_cases()
for i, m in enumerate(models[:3]):
value = lightning_getattr(m, 'learning_rate')
assert value == i, 'attribute not correctly extracted'
def test_lightning_setattr(tmpdir):
""" Test that the lightning_setattr works in all cases"""
models = _get_test_cases()
for m in models[:3]:
lightning_setattr(m, 'learning_rate', 10)
assert lightning_getattr(m, 'learning_rate') == 10, \
'attribute not correctly set'