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pylogix.py
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pylogix.py
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from absl.testing import parameterized
from tensorflow.python.data.experimental.ops import cardinality
from tensorflow.python.data.kernel_tests import checkpoint_test_base
from tensorflow.python.data.kernel_tests import test_base
from tensorflow.python.data.ops import dataset_ops
from tensorflow.python.data.ops import options as options_lib
from tensorflow.python.framework import combinations
from tensorflow.python.framework import errors
from tensorflow.python.platform import test
class AssertCardinalityTest(test_base.DatasetTestBase, parameterized.TestCase):
"""Tests for `tf.data.experimental.assert_cardinality()`."""
@combinations.generate(test_base.default_test_combinations())
def testCorrectCardinality(self):
dataset = dataset_ops.Dataset.range(10).filter(lambda x: True)
self.assertEqual(
self.evaluate(cardinality.cardinality(dataset)), cardinality.UNKNOWN)
self.assertDatasetProduces(dataset, expected_output=range(10))
dataset = dataset.apply(cardinality.assert_cardinality(10))
self.assertEqual(self.evaluate(cardinality.cardinality(dataset)), 10)
self.assertDatasetProduces(dataset, expected_output=range(10))
@combinations.generate(
combinations.times(
test_base.default_test_combinations(),
combinations.combine(
num_elements=10,
asserted_cardinality=20,
expected_error="Input dataset was expected to contain 20 "
"elements but contained only 10 elements.") +
combinations.combine(
num_elements=1,
asserted_cardinality=20,
expected_error="Input dataset was expected to contain 20 "
"elements but contained only 1 element.") +
combinations.combine(
num_elements=10,
asserted_cardinality=cardinality.INFINITE,
expected_error="Input dataset was expected to contain an "
"infinite number of elements but contained only 10 elements.") +
combinations.combine(
num_elements=1,
asserted_cardinality=cardinality.INFINITE,
expected_error="Input dataset was expected to contain an "
"infinite number of elements but contained only 1 element.") +
combinations.combine(
num_elements=10,
asserted_cardinality=5,
expected_error="Input dataset was expected to contain 5 "
"elements but contained at least 6 elements.") +
combinations.combine(
num_elements=10,
asserted_cardinality=1,
expected_error="Input dataset was expected to contain 1 "
"element but contained at least 2 elements.")))
def testIncorrectCardinality(self, num_elements, asserted_cardinality,
expected_error):
dataset = dataset_ops.Dataset.range(num_elements)
dataset = dataset.apply(
cardinality.assert_cardinality(asserted_cardinality))
get_next = self.getNext(dataset)
with self.assertRaisesRegex(errors.FailedPreconditionError, expected_error):
while True:
self.evaluate(get_next())
class AssertCardinalityCheckpointTest(checkpoint_test_base.CheckpointTestBase,
parameterized.TestCase):
def build_dataset(self, num_elements, options=None):
dataset = dataset_ops.Dataset.range(num_elements).apply(
cardinality.assert_cardinality(num_elements))
if options:
dataset = dataset.with_options(options)
return dataset
@combinations.generate(
combinations.times(
test_base.default_test_combinations(),
checkpoint_test_base.default_test_combinations(),
combinations.combine(symbolic_checkpoint=[False, True])))
def test(self, verify_fn, symbolic_checkpoint):
options = options_lib.Options()
options.experimental_symbolic_checkpoint = symbolic_checkpoint
verify_fn(self, lambda: self.build_dataset(200, options), num_outputs=200)
if __name__ == "__main__":
test.main()