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import pytest
def test_foo(datadir, num_regression):
"""
Dumb test, just to generate a expected csv file that must be different from the one gathered
from `TestClass::test_foo`.
"""
data = {"ones": [1, 1, 1, 1], "zeros": [0, 0, 0, 0]}
num_regression.check(data)
expected_filename = f"{test_foo.__name__}.csv"
obtained_filename = f"{test_foo.__name__}.obtained.csv"
assert (datadir / expected_filename).exists()
assert (datadir / obtained_filename).exists()
class TestClass:
def test_foo(self, datadir, num_regression):
"""
Since 2.2.1, pytest-regressions use the test class name to compose the name of the datafiles, by default.
This tests asserts this behavior.
"""
data = {"twos": [2, 2, 2, 2], "threes": [3, 3, 3, 3]}
# equivalent to use "--with-test-class-names" parameter
num_regression._with_test_class_names = True
num_regression.check(data)
expected_filename = f"{TestClass.__name__}_{TestClass.test_foo.__name__}.csv"
obtained_filename = (
f"{TestClass.__name__}_{TestClass.test_foo.__name__}.obtained.csv"
)
assert (datadir / expected_filename).exists()
assert (datadir / obtained_filename).exists()
class TestClassWithIgnoredName:
def test_foo(self, datadir, num_regression):
"""
Specifies to not use the class name to compose the expected data filename. The filename coincides with the
expected data filename used by `test_foo` function. The regression test then fails because the expected
data is different.
"""
data = {"fours": [4, 4, 4, 4], "fives": [5, 5, 5, 5]}
# Trying to compare this data with `test_foo` expected data.
with pytest.raises(AssertionError):
num_regression.check(data)
# Assert that we have the expected names, without class name
expected_filename = f"{TestClassWithIgnoredName.test_foo.__name__}.csv"
obtained_filename = f"{TestClassWithIgnoredName.test_foo.__name__}.obtained.csv"
assert (datadir / expected_filename).exists()
assert (datadir / obtained_filename).exists()
# Assert that don't have files with class name
expected_with_class_name = f"{TestClassWithIgnoredName.__name__}_{TestClassWithIgnoredName.test_foo.__name__}.csv"
obtained_with_class_name = f"{TestClassWithIgnoredName.__name__}_{TestClassWithIgnoredName.test_foo.__name__}.obtained.csv"
assert not (datadir / expected_with_class_name).exists()
assert not (datadir / obtained_with_class_name).exists()
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