Alexander Hess
7e3e67c300
- extend `pytest` with an option to run only the minimum number
of (unit) test cases to just keep the coverage at 100%
- rationale:
+ many of the unit test cases partly overlap with
respect to the lines of source code executed
+ also, integration tests, by definition, do not
contribute to a higher test coverage
- implementation: mark "redundant" test cases as one of:
+ `pytest.mark.integration_test`
=> code usage from the perspective of the end user
+ `pytest.mark.overlapping_test`
=> tests not contributing to the 100% coverage
+ `pytest.mark.sanity_test`
=> tests providing confidence in the test data
- add `tests.conftest` module
=> programatically convert the above markers into
`@pytest.mark.no_cover` and collect the non-"redundant" tests
- add nox session "test-fast" to run only the minimum
number of (unit) test while holding coverage at 100%
- refactor some test modules
+ wrap some test cases in a class
+ move sanity tests to the end of the files
100 lines
3.1 KiB
Python
100 lines
3.1 KiB
Python
"""Tests for the `lalib.fields.complex_.ComplexField` only."""
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import random
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import pytest
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from lalib import fields
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from tests.fields import utils
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# None of the test cases below contributes towards higher coverage
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pytestmark = pytest.mark.overlapping_test
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C = fields.C
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class TestCastAndValidateFieldElements:
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"""Test specifics for `C.cast()` and `C.validate()`."""
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@pytest.mark.parametrize("pre_value", [1, 0, +42, -42])
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def test_complex_number_is_field_element(self, pre_value):
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"""`C` must be able to process `complex` numbers."""
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value = complex(pre_value, 0)
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utils.is_field_element(C, value)
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@pytest.mark.parametrize("pre_value", ["NaN", "+inf", "-inf"])
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def test_non_finite_complex_number_is_not_field_element(self, pre_value):
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"""For now, we only allow finite numbers as field elements.
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This also holds true for `complex` numbers
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with a non-finite `.real` part.
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"""
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value = complex(pre_value)
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utils.is_not_field_element(C, value)
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class TestIsZero:
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"""Test specifics for `C.zero` and `C.is_zero()`."""
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def test_is_almost_zero(self):
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"""`value` is within an acceptable threshold of `C.zero`."""
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value = 0.0 + utils.WITHIN_THRESHOLD
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assert pytest.approx(C.zero, abs=utils.DEFAULT_THRESHOLD) == value
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assert C.is_zero(value)
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def test_is_slightly_not_zero(self):
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"""`value` is not within an acceptable threshold of `C.zero`."""
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value = 0.0 + utils.NOT_WITHIN_THRESHOLD
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assert pytest.approx(C.zero, abs=utils.DEFAULT_THRESHOLD) != value
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assert not C.is_zero(value)
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class TestIsOne:
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"""Test specifics for `C.one` and `C.is_one()`."""
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def test_is_almost_one(self):
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"""`value` is within an acceptable threshold of `C.one`."""
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value = 1.0 + utils.WITHIN_THRESHOLD
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assert pytest.approx(C.one, abs=utils.DEFAULT_THRESHOLD) == value
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assert C.is_one(value)
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def test_is_slightly_not_one(self):
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"""`value` is not within an acceptable threshold of `C.one`."""
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value = 1.0 + utils.NOT_WITHIN_THRESHOLD
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assert pytest.approx(C.one, abs=utils.DEFAULT_THRESHOLD) != value
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assert not C.is_one(value)
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@pytest.mark.repeat(utils.N_RANDOM_DRAWS)
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class TestDrawRandomFieldElement:
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"""Test specifics for `C.random()`."""
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def test_draw_elements_with_custom_bounds(self):
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"""Draw a random element from `C` ...
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... within the bounds passed in as arguments.
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For `C`, the bounds are interpreted in a 2D fashion.
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"""
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lower = complex(
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200 * random.random() - 100, # noqa: S311
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200 * random.random() - 100, # noqa: S311
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)
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upper = complex(
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200 * random.random() - 100, # noqa: S311
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200 * random.random() - 100, # noqa: S311
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)
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element = C.random(lower=lower, upper=upper)
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l_r, u_r = min(lower.real, upper.real), max(lower.real, upper.real)
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l_i, u_i = min(lower.imag, upper.imag), max(lower.imag, upper.imag)
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assert l_r <= element.real <= u_r
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assert l_i <= element.imag <= u_i
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