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from __future__ import annotations
import importlib
import re
import pytest
from coverage.config import CoverageConfig
from coverage.config import DEFAULT_EXCLUDE
from coverage.plugin_support import Plugins
import covdefaults
configure = covdefaults.CovDefaults().configure
def test_plat_impl_pragmas():
pragmas = covdefaults._plat_impl_pragmas()
assert {p.split()[2] for p in pragmas} == set(covdefaults._ALL)
# other pragmas
for s in pragmas[:-3]:
c, pragma, _, cover = s.split()
assert (c, pragma, cover) == ('#', 'pragma:', r'cover\b'), s
# self pragmas
for s in pragmas[-3:]:
c, pragma, _, no, cover = s.split()
assert (c, pragma, no, cover) == ('#', 'pragma:', 'no', r'cover\b'), s
def _matches_version_pragma(major, minor, s):
regexes = covdefaults._version_pragmas(major, minor)
return any(re.match(reg, s) for reg in regexes)
@pytest.mark.parametrize(
('s', 'expected'),
(
# <
('# pragma: <2.7 cover', True),
('# pragma: <3.6 cover', True),
('# pragma: <3.7 cover', True),
('# pragma: <3.8 cover', False),
('# pragma: <3.10 cover', False),
# <=
('# pragma: <=2.7 cover', True),
('# pragma: <=3.6 cover', True),
('# pragma: <=3.7 cover', False),
('# pragma: <=3.8 cover', False),
('# pragma: <=3.10 cover', False),
# >
('# pragma: >2.7 cover', False),
('# pragma: >3.6 cover', False),
('# pragma: >3.7 cover', True),
('# pragma: >3.8 cover', True),
('# pragma: >3.10 cover', True),
# >=
('# pragma: >=2.7 cover', False),
('# pragma: >=3.6 cover', False),
('# pragma: >=3.7 cover', False),
('# pragma: >=3.8 cover', True),
('# pragma: >=3.10 cover', True),
# ==
('# pragma: ==3.6 cover', True),
('# pragma: ==3.7 cover', False),
('# pragma: ==3.8 cover', True),
# !=
('# pragma: !=3.6 cover', False),
('# pragma: !=3.7 cover', True),
('# pragma: !=3.8 cover', False),
),
)
def test_version_pragmas_py37(s, expected):
assert _matches_version_pragma(3, 7, s) == expected
@pytest.mark.parametrize(
('s', 'expected'),
(
# <
('# pragma: <2.7 cover', True),
('# pragma: <3.9 cover', True),
('# pragma: <3.10 cover', True),
('# pragma: <3.11 cover', False),
# <=
('# pragma: <=2.7 cover', True),
('# pragma: <=3.9 cover', True),
('# pragma: <=3.10 cover', False),
('# pragma: <=3.11 cover', False),
# >
('# pragma: >2.7 cover', False),
('# pragma: >3.9 cover', False),
('# pragma: >3.10 cover', True),
('# pragma: >3.11 cover', True),
# >=
('# pragma: >=2.7 cover', False),
('# pragma: >=3.9 cover', False),
('# pragma: >=3.10 cover', False),
('# pragma: >=3.11 cover', True),
# ==
('# pragma: ==3.9 cover', True),
('# pragma: ==3.10 cover', False),
('# pragma: ==3.11 cover', True),
# !=
('# pragma: !=3.9 cover', False),
('# pragma: !=3.10 cover', True),
('# pragma: !=3.11 cover', False),
),
)
def test_version_pragmas_py310(s, expected):
assert _matches_version_pragma(3, 10, s) == expected
@pytest.fixture
def configured():
cfg = CoverageConfig()
configure(cfg)
return cfg
def test_constant_options(configured):
assert configured.get_option('run:branch') is True
assert configured.get_option('run:source') == ['.']
assert configured.get_option('report:show_missing') is True
assert configured.get_option('report:skip_covered') is True
assert configured.get_option('report:fail_under') == 100
def test_source_already_set():
cfg = CoverageConfig()
cfg.set_option('run:source', ['/tmp/foo'])
configure(cfg)
assert cfg.get_option('run:source') == ['/tmp/foo']
def test_extends_existing_omit():
cfg = CoverageConfig()
cfg.set_option('run:omit', ['pre_commit/resources/*'])
configure(cfg)
assert cfg.get_option('run:omit') == [
'*/__main__.py',
'*/setup.py',
'pre_commit/resources/*',
]
def test_subtract_omit():
cfg = CoverageConfig()
covdefaults.CovDefaults(subtract_omit='*/__main__.py').configure(cfg)
assert cfg.get_option('run:omit') == [
'*/setup.py',
]
def test_exclude_lines_does_not_include_defaults(configured):
ret = set(configured.get_option('report:exclude_lines'))
assert set(DEFAULT_EXCLUDE) & ret == set()
@pytest.mark.parametrize(
'src',
(
'if x: # pragma: no cover\n',
'if x: # pragma: no cover (py38+)\n',
'if x: # noqa # pragma: no cover\n',
'if x: # pragma: no cover # noqa\n',
'raise AssertionError("unreachable!")\n',
'raise NotImplementedError("TODO!")\n',
' return NotImplemented\n',
' raise\n',
'if False:\n',
' if False:\n',
'if TYPE_CHECKING:\n',
' if TYPE_CHECKING:\n',
'assert_never(instance)',
'def f(x: int) -> int: ...\n',
'def f(x: int) -> int:\n ...\n',
'def f(x: int) -> C: ...# noqa: F821\n',
'def f(x: int) -> C: ... # noqa: F821\n',
'def never_returns() -> NoReturn:\n',
'def never_returns() -> "NoReturn":\n',
"def never_returns() -> 'NoReturn':\n",
'if __name__ == "__main__":\n',
"if __name__ == '__main__':\n",
),
)
def test_excludes_lines(configured, src):
for reg in configured.get_option('report:exclude_lines'):
if any(re.search(reg, line) for line in src.splitlines()):
break
else:
raise AssertionError(f'no regex matched {src!r}')
@pytest.mark.parametrize(
'src',
(
'if True: # pragma: no branch\n',
'if sys.platform == "win32": # pragma: win32 cover\n',
'if sys.platform != "win32": # pragma: win32 no cover\n',
'if sys.version_info >= (3, 9): # pragma: >=3.9 cover\n',
'if sys.version_info > (3, 9): # pragma: >3.9 cover\n',
'if sys.version_info <= (3, 9): # pragma: <=3.9 cover\n',
'if sys.version_info < (3, 9): # pragma: <3.9 cover\n',
'if sys.version_info == (3, 9): # pragma: ==3.9 cover\n',
'if sys.version_info != (3, 9): # pragma: !=3.9 cover\n',
),
)
def test_partial_branches(configured, src):
for reg in configured.get_option('report:partial_branches'):
if any(re.search(reg, line) for line in src.splitlines()):
break
else:
raise AssertionError(f'no regex matched {src!r}')
def test_extends_existing_exclude_lines():
cfg = CoverageConfig()
cfg.set_option('report:exclude_lines', ['^if MYPY:$'])
configure(cfg)
assert '^if MYPY:$' in cfg.get_option('report:exclude_lines')
def test_configure_keeps_existing_fail_under():
cfg = CoverageConfig()
cfg.set_option('report:fail_under', 42)
configure(cfg)
assert cfg.get_option('report:fail_under') == 42
def test_coverage_init():
cfg = CoverageConfig()
# Coverage 7.7.0 and above
if hasattr(Plugins, 'load_from_config'):
plugin_manager = Plugins()
plugin_manager.load_from_config(['covdefaults'], cfg)
# Coverage 7.6.12 and below
else: # pragma: no cover
plugin_manager = Plugins.load_plugins(['covdefaults'], cfg)
assert plugin_manager.get('covdefaults.CovDefaults')
def test_fix_coverage():
"""since we get imported as a coverage plugin -- need to re-scan module"""
importlib.reload(covdefaults)
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