def test_inconsistent_parameters():
"""Throws an error when inconsistent parameters are given."""
with pytest.raises(ValueError) as e:
parametrize_cases(Case(foo=10, bar=20), Case(foo=10, baz=30))
assert e.match(r"Inconsistent parametrization: "
r"Case\(foo=10, bar=20,\), Case\(foo=10, baz=30,\)")
def test_one_parameter():
"""parametrize_cases matches mark.parametrize when only one parameter given."""
standard = pytest.mark.parametrize(
argnames="bar",
argvalues=[3, -100, ...],
)
wrapped = parametrize_cases(Case(bar=3), Case(bar=-100), Case(bar=...))
assert wrapped == standard
def test_case_repr():
"""Case has a sensible __repr__ method."""
case = Case("foo", bar=10, baz=...)
assert repr(case) == "Case('foo', bar=10, baz=Ellipsis,)"
assert eval(repr(case)) == case
case = Case(var1="something", var2="something else")
assert repr(case) == "Case(var1='something', var2='something else',)"
assert eval(repr(case)) == case
def test_case_eq():
"""Case has a sensible __eq__ method."""
case_1 = Case("foo", bar=10, baz=...)
case_2 = Case(bar=10, baz=...)
case_3 = Case("foo", bar=11, baz=...)
assert case_1 == case_1
assert case_1 != case_2
assert case_2 != case_3
assert case_1 != case_3
assert case_1 != 10
def test_multiple_cases():
"""parametrize_cases matches mark.parametrize for multiple Cases."""
standard = pytest.mark.parametrize(
argnames="foo,bar",
argvalues=[(3, "something"), (None, -100), ([10, 20, 30], ...)],
)
wrapped = parametrize_cases(
Case(foo=3, bar="something"),
Case(foo=None, bar=-100),
Case(foo=[10, 20, 30], bar=...),
)
assert wrapped == standard
def test_ids():
"""parametrize_cases produces appropriate test IDs."""
standard = pytest.mark.parametrize(
argnames="foo,bar",
argvalues=[(3, "something"), (None, -100), ([10, 20, 30], ...)],
ids=["thing_1", None, "thing_3"],
)
wrapped = parametrize_cases(
Case("thing_1", foo=3, bar="something"),
Case(foo=None, bar=-100),
Case("thing_3", foo=[10, 20, 30], bar=...),
)
assert wrapped == standard
def test_one_case():
"""parametrize_cases matches mark.parametrize for one Case."""
standard = pytest.mark.parametrize(argnames="foo,bar",
argvalues=[(3, "something")])
wrapped = parametrize_cases(Case(foo=3, bar="something"))
assert wrapped == standard
def test_param_reorder():
"""Parameters can be reordered and doesn't affect the outcome."""
standard = pytest.mark.parametrize(
argnames="foo,bar,baz",
argvalues=[
(3, "something", 777),
(None, -100, "aaaaa"),
([10, 20, 30], ..., 0),
],
)
wrapped = parametrize_cases(
Case(foo=3, bar="something", baz=777),
Case(bar=-100, baz="aaaaa", foo=None),
Case(baz=0, bar=..., foo=[10, 20, 30]),
)
assert wrapped == standard