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"""Test that the checks run correct."""
import pytest
from hypothesis import given
from hypothesis import strategies as st
from quality_control.checks import decimal_places_pattern
@pytest.mark.unit_test
@given(numstr=st.from_regex(r"^[0-9]+$", fullmatch=True))
def test_matches_whole_numbers(numstr):
"""
GIVEN: 'numstr' is an arbitrary string that represents a whole number,
e.g. 45342
WHEN: We test for a match made by 'decimal_places_pattern'
THEN: The string in 'numstr' always matches.
"""
assert bool(decimal_places_pattern(3, 6).search(numstr))
@pytest.mark.unit_test
@given(numstr=st.from_regex(r"^0+\.?0*$", fullmatch=True))
def test_matches_zeroes(numstr):
"""
GIVEN: 'numstr' is an arbitrary string that represents zero,
e.g. 0, 00, 000, 0.0, 00.00, 000.0
WHEN: We test for a match made by 'decimal_places_pattern'
THEN: The string in 'numstr' always matches.
"""
assert bool(decimal_places_pattern(3, 6).search(numstr))
@pytest.mark.unit_test
@given(numstr=st.from_regex(r"^[0-9]+\.[1-9]{1,5}$", fullmatch=True))
def test_does_not_match_fewer_decimal_places(numstr):
"""
GIVEN: 'numstr' is an arbitrary string that represents a non-whole decimal
number with fewer decimal places than allowed
WHEN: We test for a match made by 'decimal_places_pattern'
THEN: The string in 'numstr' always fails to match
"""
assert decimal_places_pattern(6).match(numstr) is None
@pytest.mark.unit_test
@given(numstr=st.from_regex(r"^[0-9]+\.[1-9]{7}$", fullmatch=True))
def test_does_not_match_more_decimal_places(numstr):
"""
GIVEN: 'numstr' is an arbitrary string that represents a non-whole decimal
number with more decimal places than allowed
WHEN: We test for a match made by 'decimal_places_pattern'
THEN: The string in 'numstr' always fails to match
"""
assert decimal_places_pattern(3, 6).match(numstr) is None
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