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test_pytest_cov.py
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test_pytest_cov.py
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import glob
import os
import platform
import subprocess
import sys
from distutils.version import StrictVersion
from itertools import chain
import coverage
import py
import pytest
import virtualenv
import xdist
from fields import Namespace
from process_tests import TestProcess as _TestProcess
from process_tests import dump_on_error
from process_tests import wait_for_strings
from six import exec_
try:
from StringIO import StringIO
except ImportError:
from io import StringIO
import pytest_cov.plugin
from pytest_cov import compat
coverage, platform, StrictVersion # required for skipif mark on test_cov_min_from_coveragerc
max_worker_restart_0 = "--max-" + compat.worker + "-restart=0"
SCRIPT = '''
import sys, helper
def pytest_generate_tests(metafunc):
for i in [10]:
metafunc.parametrize('p', range(i))
def test_foo(p):
x = True
helper.do_stuff() # get some coverage in some other completely different location
if sys.version_info[0] > 5:
assert False
'''
SCRIPT2 = '''
#
def test_bar():
x = True
assert x
'''
COVERAGERC_SOURCE = '''\
[run]
source = .
'''
SCRIPT_CHILD = '''
import sys
idx = int(sys.argv[1])
if idx == 0:
foo = "a" # previously there was a "pass" here but Python 3.5 optimizes it away.
if idx == 1:
foo = "b" # previously there was a "pass" here but Python 3.5 optimizes it away.
'''
SCRIPT_PARENT = '''
import os
import subprocess
import sys
def pytest_generate_tests(metafunc):
for i in [2]:
metafunc.parametrize('idx', range(i))
def test_foo(idx):
out, err = subprocess.Popen(
[sys.executable, os.path.join(os.path.dirname(__file__), 'child_script.py'), str(idx)],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE).communicate()
# there is a issue in coverage.py with multiline statements at
# end of file: https://bitbucket.org/ned/coveragepy/issue/293
pass
'''
SCRIPT_PARENT_CHANGE_CWD = '''
import subprocess
import sys
import os
def pytest_generate_tests(metafunc):
for i in [2]:
metafunc.parametrize('idx', range(i))
def test_foo(idx):
os.mkdir("foobar")
os.chdir("foobar")
subprocess.check_call([
sys.executable,
os.path.join(os.path.dirname(__file__), 'child_script.py'),
str(idx)
])
# there is a issue in coverage.py with multiline statements at
# end of file: https://bitbucket.org/ned/coveragepy/issue/293
pass
'''
SCRIPT_PARENT_CHANGE_CWD_IMPORT_CHILD = '''
import subprocess
import sys
import os
def pytest_generate_tests(metafunc):
for i in [2]:
if metafunc.function is test_foo: metafunc.parametrize('idx', range(i))
def test_foo(idx):
os.mkdir("foobar")
os.chdir("foobar")
subprocess.check_call([
sys.executable,
'-c', 'import sys; sys.argv = ["", str(%s)]; import child_script' % idx
])
# there is a issue in coverage.py with multiline statements at
# end of file: https://bitbucket.org/ned/coveragepy/issue/293
pass
'''
SCRIPT_FUNCARG = '''
import coverage
def test_foo(cov):
assert isinstance(cov, coverage.Coverage)
'''
SCRIPT_FUNCARG_NOT_ACTIVE = '''
def test_foo(cov):
assert cov is None
'''
CHILD_SCRIPT_RESULT = '[56] * 100%'
PARENT_SCRIPT_RESULT = '9 * 100%'
DEST_DIR = 'cov_dest'
REPORT_NAME = 'cov.xml'
xdist_params = pytest.mark.parametrize('opts', [
'',
pytest.param('-n 1', marks=pytest.mark.skipif('sys.platform == "win32" and platform.python_implementation() == "PyPy"'))
], ids=['nodist', 'xdist'])
@pytest.fixture(scope='session', autouse=True)
def adjust_sys_path():
"""Adjust PYTHONPATH during tests to make "helper" importable in SCRIPT."""
orig_path = os.environ.get('PYTHONPATH', None)
new_path = os.path.dirname(__file__)
if orig_path is not None:
new_path = os.pathsep.join([new_path, orig_path])
os.environ['PYTHONPATH'] = new_path
yield
if orig_path is None:
del os.environ['PYTHONPATH']
else:
os.environ['PYTHONPATH'] = orig_path
@pytest.fixture(params=[
('branch=true', '--cov-branch', '9 * 85%', '3 * 100%'),
('branch=true', '', '9 * 85%', '3 * 100%'),
('', '--cov-branch', '9 * 85%', '3 * 100%'),
('', '', '9 * 89%', '3 * 100%'),
], ids=['branch2x', 'branch1c', 'branch1a', 'nobranch'])
def prop(request):
return Namespace(
code=SCRIPT,
code2=SCRIPT2,
conf=request.param[0],
fullconf='[run]\n%s\n' % request.param[0],
prefixedfullconf='[coverage:run]\n%s\n' % request.param[0],
args=request.param[1].split(),
result=request.param[2],
result2=request.param[3],
)
def test_central(testdir, prop):
script = testdir.makepyfile(prop.code)
testdir.tmpdir.join('.coveragerc').write(prop.fullconf)
result = testdir.runpytest('-v',
'--cov=%s' % script.dirpath(),
'--cov-report=term-missing',
script,
*prop.args)
result.stdout.fnmatch_lines([
'*- coverage: platform *, python * -*',
'test_central* %s *' % prop.result,
'*10 passed*'
])
assert result.ret == 0
def test_annotate(testdir):
script = testdir.makepyfile(SCRIPT)
result = testdir.runpytest('-v',
'--cov=%s' % script.dirpath(),
'--cov-report=annotate',
script)
result.stdout.fnmatch_lines([
'*- coverage: platform *, python * -*',
'Coverage annotated source written next to source',
'*10 passed*',
])
assert result.ret == 0
def test_annotate_output_dir(testdir):
script = testdir.makepyfile(SCRIPT)
result = testdir.runpytest('-v',
'--cov=%s' % script.dirpath(),
'--cov-report=annotate:' + DEST_DIR,
script)
result.stdout.fnmatch_lines([
'*- coverage: platform *, python * -*',
'Coverage annotated source written to dir ' + DEST_DIR,
'*10 passed*',
])
dest_dir = testdir.tmpdir.join(DEST_DIR)
assert dest_dir.check(dir=True)
assert dest_dir.join(script.basename + ",cover").check()
assert result.ret == 0
def test_html_output_dir(testdir, prop):
script = testdir.makepyfile(SCRIPT)
result = testdir.runpytest('-v',
'--cov=%s' % script.dirpath(),
'--cov-report=html:' + DEST_DIR,
script)
result.stdout.fnmatch_lines([
'*- coverage: platform *, python * -*',
'Coverage HTML written to dir ' + DEST_DIR,
'*10 passed*',
])
dest_dir = testdir.tmpdir.join(DEST_DIR)
assert dest_dir.check(dir=True)
assert dest_dir.join("index.html").check()
assert result.ret == 0
def test_xml_output_dir(testdir):
script = testdir.makepyfile(SCRIPT)
result = testdir.runpytest('-v',
'--cov=%s' % script.dirpath(),
'--cov-report=xml:' + REPORT_NAME,
script)
result.stdout.fnmatch_lines([
'*- coverage: platform *, python * -*',
'Coverage XML written to file ' + REPORT_NAME,
'*10 passed*',
])
assert testdir.tmpdir.join(REPORT_NAME).check()
assert result.ret == 0
def test_term_output_dir(testdir):
script = testdir.makepyfile(SCRIPT)
result = testdir.runpytest('-v',
'--cov=%s' % script.dirpath(),
'--cov-report=term:' + DEST_DIR,
script)
result.stderr.fnmatch_lines([
'*argument --cov-report: output specifier not supported for: "term:%s"*' % DEST_DIR,
])
assert result.ret != 0
def test_term_missing_output_dir(testdir):
script = testdir.makepyfile(SCRIPT)
result = testdir.runpytest('-v',
'--cov=%s' % script.dirpath(),
'--cov-report=term-missing:' + DEST_DIR,
script)
result.stderr.fnmatch_lines([
'*argument --cov-report: output specifier not supported for: '
'"term-missing:%s"*' % DEST_DIR,
])
assert result.ret != 0
def test_cov_min_100(testdir):
script = testdir.makepyfile(SCRIPT)
result = testdir.runpytest('-v',
'--cov=%s' % script.dirpath(),
'--cov-report=term-missing',
'--cov-fail-under=100',
script)
assert result.ret != 0
result.stdout.fnmatch_lines([
'FAIL Required test coverage of 100% not reached. Total coverage: *%'
])
def test_cov_min_50(testdir):
script = testdir.makepyfile(SCRIPT)
result = testdir.runpytest('-v',
'--cov=%s' % script.dirpath(),
'--cov-report=term-missing',
'--cov-fail-under=50',
script)
assert result.ret == 0
result.stdout.fnmatch_lines([
'Required test coverage of 50% reached. Total coverage: *%'
])
def test_cov_min_float_value(testdir):
script = testdir.makepyfile(SCRIPT)
result = testdir.runpytest('-v',
'--cov=%s' % script.dirpath(),
'--cov-report=term-missing',
'--cov-fail-under=88.88',
script)
assert result.ret == 0
result.stdout.fnmatch_lines([
'Required test coverage of 88.88% reached. Total coverage: 88.89%'
])
def test_cov_min_float_value_not_reached(testdir):
script = testdir.makepyfile(SCRIPT)
result = testdir.runpytest('-v',
'--cov=%s' % script.dirpath(),
'--cov-report=term-missing',
'--cov-fail-under=88.89',
script)
assert result.ret == 1
result.stdout.fnmatch_lines([
'FAIL Required test coverage of 88.89% not reached. Total coverage: 88.89%'
])
def test_cov_min_no_report(testdir):
script = testdir.makepyfile(SCRIPT)
result = testdir.runpytest('-v',
'--cov=%s' % script.dirpath(),
'--cov-report=',
'--cov-fail-under=50',
script)
assert result.ret == 0
result.stdout.fnmatch_lines([
'Required test coverage of 50% reached. Total coverage: *%'
])
def test_central_nonspecific(testdir, prop):
script = testdir.makepyfile(prop.code)
testdir.tmpdir.join('.coveragerc').write(prop.fullconf)
result = testdir.runpytest('-v',
'--cov',
'--cov-report=term-missing',
script, *prop.args)
result.stdout.fnmatch_lines([
'*- coverage: platform *, python * -*',
'test_central_nonspecific* %s *' % prop.result,
'*10 passed*'
])
# multi-module coverage report
assert any(line.startswith('TOTAL ') for line in result.stdout.lines)
assert result.ret == 0
@pytest.mark.skipif('StrictVersion(coverage.__version__) <= StrictVersion("3.8")')
def test_cov_min_from_coveragerc(testdir):
script = testdir.makepyfile(SCRIPT)
testdir.tmpdir.join('.coveragerc').write("""
[report]
fail_under = 100
""")
result = testdir.runpytest('-v',
'--cov=%s' % script.dirpath(),
'--cov-report=term-missing',
script)
assert result.ret != 0
def test_central_coveragerc(testdir, prop):
script = testdir.makepyfile(prop.code)
testdir.tmpdir.join('.coveragerc').write(COVERAGERC_SOURCE + prop.conf)
result = testdir.runpytest('-v',
'--cov',
'--cov-report=term-missing',
script, *prop.args)
result.stdout.fnmatch_lines([
'*- coverage: platform *, python * -*',
'test_central_coveragerc* %s *' % prop.result,
'*10 passed*',
])
# single-module coverage report
assert all(not line.startswith('TOTAL ') for line in result.stdout.lines[-4:])
assert result.ret == 0
@xdist_params
def test_central_with_path_aliasing(testdir, monkeypatch, opts, prop):
mod1 = testdir.mkdir('src').join('mod.py')
mod1.write(SCRIPT)
mod2 = testdir.mkdir('aliased').join('mod.py')
mod2.write(SCRIPT)
script = testdir.makepyfile('''
from mod import *
''')
testdir.tmpdir.join('setup.cfg').write("""
[coverage:paths]
source =
src
aliased
[coverage:run]
source = mod
parallel = true
%s
""" % prop.conf)
monkeypatch.setitem(os.environ, 'PYTHONPATH', os.pathsep.join([os.environ.get('PYTHONPATH', ''), 'aliased']))
result = testdir.runpytest('-v', '-s',
'--cov',
'--cov-report=term-missing',
script, *opts.split()+prop.args)
result.stdout.fnmatch_lines([
'*- coverage: platform *, python * -*',
'src[\\/]mod* %s *' % prop.result,
'*10 passed*',
])
# single-module coverage report
assert all(not line.startswith('TOTAL ') for line in result.stdout.lines[-4:])
assert result.ret == 0
def test_subprocess_with_path_aliasing(testdir, monkeypatch):
src = testdir.mkdir('src')
src.join('parent_script.py').write(SCRIPT_PARENT)
src.join('child_script.py').write(SCRIPT_CHILD)
aliased = testdir.mkdir('aliased')
parent_script = aliased.join('parent_script.py')
parent_script.write(SCRIPT_PARENT)
aliased.join('child_script.py').write(SCRIPT_CHILD)
testdir.tmpdir.join('.coveragerc').write("""
[paths]
source =
src
aliased
[run]
source =
parent_script
child_script
parallel = true
""")
monkeypatch.setitem(os.environ, 'PYTHONPATH', os.pathsep.join([
os.environ.get('PYTHONPATH', ''), 'aliased']))
result = testdir.runpytest('-v',
'--cov',
'--cov-report=term-missing',
parent_script)
result.stdout.fnmatch_lines([
'*- coverage: platform *, python * -*',
'src[\\/]child_script* %s*' % CHILD_SCRIPT_RESULT,
'src[\\/]parent_script* %s*' % PARENT_SCRIPT_RESULT,
])
assert result.ret == 0
def test_show_missing_coveragerc(testdir, prop):
script = testdir.makepyfile(prop.code)
testdir.tmpdir.join('.coveragerc').write("""
[run]
source = .
%s
[report]
show_missing = true
""" % prop.conf)
result = testdir.runpytest('-v',
'--cov',
'--cov-report=term',
script, *prop.args)
result.stdout.fnmatch_lines([
'*- coverage: platform *, python * -*',
'Name * Stmts * Miss * Cover * Missing',
'test_show_missing_coveragerc* %s * 11*' % prop.result,
'*10 passed*',
])
# single-module coverage report
assert all(not line.startswith('TOTAL ') for line in result.stdout.lines[-4:])
assert result.ret == 0
def test_no_cov_on_fail(testdir):
script = testdir.makepyfile('''
def test_fail():
assert False
''')
result = testdir.runpytest('-v',
'--cov=%s' % script.dirpath(),
'--cov-report=term-missing',
'--no-cov-on-fail',
script)
assert 'coverage: platform' not in result.stdout.str()
result.stdout.fnmatch_lines(['*1 failed*'])
def test_no_cov(testdir):
script = testdir.makepyfile(SCRIPT)
result = testdir.runpytest('-vvv',
'--cov=%s' % script.dirpath(),
'--cov-report=term-missing',
'--no-cov',
'-rw',
script)
result.stdout.fnmatch_lines_random([
'WARNING: Coverage disabled via --no-cov switch!',
'*Coverage disabled via --no-cov switch!',
])
def test_cov_and_failure_report_on_fail(testdir):
script = testdir.makepyfile(SCRIPT + '''
def test_fail(p):
assert False
''')
result = testdir.runpytest('-v',
'--cov=%s' % script.dirpath(),
'--cov-fail-under=100',
script)
result.stdout.fnmatch_lines_random([
'*10 failed*',
'*coverage: platform*',
'*FAIL Required test coverage of 100% not reached*',
'*assert False*',
])
@pytest.mark.skipif('sys.platform == "win32" or platform.python_implementation() == "PyPy"')
def test_dist_combine_racecondition(testdir):
script = testdir.makepyfile("""
import pytest
@pytest.mark.parametrize("foo", range(1000))
def test_foo(foo):
""" + "\n".join("""
if foo == %s:
assert True
""" % i for i in range(1000)))
result = testdir.runpytest('-v',
'--cov=%s' % script.dirpath(),
'--cov-report=term-missing',
'-n', '5', '-s',
script)
result.stdout.fnmatch_lines([
'*- coverage: platform *, python * -*',
'test_dist_combine_racecondition* 2002 * 0 * 100%*',
'*1000 passed*'
])
for line in chain(result.stdout.lines, result.stderr.lines):
assert 'The following workers failed to return coverage data' not in line
assert 'INTERNALERROR' not in line
assert result.ret == 0
@pytest.mark.skipif('sys.platform == "win32" and platform.python_implementation() == "PyPy"')
def test_dist_collocated(testdir, prop):
script = testdir.makepyfile(prop.code)
testdir.tmpdir.join('.coveragerc').write(prop.fullconf)
result = testdir.runpytest('-v',
'--cov=%s' % script.dirpath(),
'--cov-report=term-missing',
'--dist=load',
'--tx=2*popen',
max_worker_restart_0,
script, *prop.args)
result.stdout.fnmatch_lines([
'*- coverage: platform *, python * -*',
'test_dist_collocated* %s *' % prop.result,
'*10 passed*'
])
assert result.ret == 0
@pytest.mark.skipif('sys.platform == "win32" and platform.python_implementation() == "PyPy"')
def test_dist_not_collocated(testdir, prop):
script = testdir.makepyfile(prop.code)
dir1 = testdir.mkdir('dir1')
dir2 = testdir.mkdir('dir2')
testdir.tmpdir.join('.coveragerc').write('''
[run]
%s
[paths]
source =
.
dir1
dir2''' % prop.conf)
result = testdir.runpytest('-v',
'--cov=%s' % script.dirpath(),
'--cov-report=term-missing',
'--dist=load',
'--tx=popen//chdir=%s' % dir1,
'--tx=popen//chdir=%s' % dir2,
'--rsyncdir=%s' % script.basename,
'--rsyncdir=.coveragerc',
max_worker_restart_0, '-s',
script, *prop.args)
result.stdout.fnmatch_lines([
'*- coverage: platform *, python * -*',
'test_dist_not_collocated* %s *' % prop.result,
'*10 passed*'
])
assert result.ret == 0
@pytest.mark.skipif('sys.platform == "win32" and platform.python_implementation() == "PyPy"')
def test_dist_not_collocated_coveragerc_source(testdir, prop):
script = testdir.makepyfile(prop.code)
dir1 = testdir.mkdir('dir1')
dir2 = testdir.mkdir('dir2')
testdir.tmpdir.join('.coveragerc').write('''
[run]
%s
source = %s
[paths]
source =
.
dir1
dir2''' % (prop.conf, script.dirpath()))
result = testdir.runpytest('-v',
'--cov',
'--cov-report=term-missing',
'--dist=load',
'--tx=popen//chdir=%s' % dir1,
'--tx=popen//chdir=%s' % dir2,
'--rsyncdir=%s' % script.basename,
'--rsyncdir=.coveragerc',
max_worker_restart_0, '-s',
script, *prop.args)
result.stdout.fnmatch_lines([
'*- coverage: platform *, python * -*',
'test_dist_not_collocated* %s *' % prop.result,
'*10 passed*'
])
assert result.ret == 0
def test_central_subprocess(testdir):
scripts = testdir.makepyfile(parent_script=SCRIPT_PARENT,
child_script=SCRIPT_CHILD)
parent_script = scripts.dirpath().join('parent_script.py')
result = testdir.runpytest('-v',
'--cov=%s' % scripts.dirpath(),
'--cov-report=term-missing',
parent_script)
result.stdout.fnmatch_lines([
'*- coverage: platform *, python * -*',
'child_script* %s*' % CHILD_SCRIPT_RESULT,
'parent_script* %s*' % PARENT_SCRIPT_RESULT,
])
assert result.ret == 0
def test_central_subprocess_change_cwd(testdir):
scripts = testdir.makepyfile(parent_script=SCRIPT_PARENT_CHANGE_CWD,
child_script=SCRIPT_CHILD)
parent_script = scripts.dirpath().join('parent_script.py')
testdir.makefile('', coveragerc="""
[run]
branch = true
parallel = true
""")
result = testdir.runpytest('-v', '-s',
'--cov=%s' % scripts.dirpath(),
'--cov-config=coveragerc',
'--cov-report=term-missing',
parent_script)
result.stdout.fnmatch_lines([
'*- coverage: platform *, python * -*',
'*child_script* %s*' % CHILD_SCRIPT_RESULT,
'*parent_script* 100%*',
])
assert result.ret == 0
def test_central_subprocess_change_cwd_with_pythonpath(testdir, monkeypatch):
stuff = testdir.mkdir('stuff')
parent_script = stuff.join('parent_script.py')
parent_script.write(SCRIPT_PARENT_CHANGE_CWD_IMPORT_CHILD)
stuff.join('child_script.py').write(SCRIPT_CHILD)
testdir.makefile('', coveragerc="""
[run]
parallel = true
""")
monkeypatch.setitem(os.environ, 'PYTHONPATH', str(stuff))
result = testdir.runpytest('-vv', '-s',
'--cov=child_script',
'--cov-config=coveragerc',
'--cov-report=term-missing',
'--cov-branch',
parent_script)
result.stdout.fnmatch_lines([
'*- coverage: platform *, python * -*',
'*child_script* %s*' % CHILD_SCRIPT_RESULT,
])
assert result.ret == 0
def test_central_subprocess_no_subscript(testdir):
script = testdir.makepyfile("""
import subprocess, sys
def test_foo():
subprocess.check_call([sys.executable, '-c', 'print("Hello World")'])
""")
testdir.makefile('', coveragerc="""
[run]
parallel = true
""")
result = testdir.runpytest('-v',
'--cov-config=coveragerc',
'--cov=%s' % script.dirpath(),
'--cov-branch',
script)
result.stdout.fnmatch_lines([
'*- coverage: platform *, python * -*',
'test_central_subprocess_no_subscript* * 3 * 0 * 100%*',
])
assert result.ret == 0
@pytest.mark.skipif('sys.platform == "win32" and platform.python_implementation() == "PyPy"')
def test_dist_subprocess_collocated(testdir):
scripts = testdir.makepyfile(parent_script=SCRIPT_PARENT,
child_script=SCRIPT_CHILD)
parent_script = scripts.dirpath().join('parent_script.py')
result = testdir.runpytest('-v',
'--cov=%s' % scripts.dirpath(),
'--cov-report=term-missing',
'--dist=load',
'--tx=2*popen',
max_worker_restart_0,
parent_script)
result.stdout.fnmatch_lines([
'*- coverage: platform *, python * -*',
'child_script* %s*' % CHILD_SCRIPT_RESULT,
'parent_script* %s*' % PARENT_SCRIPT_RESULT,
])
assert result.ret == 0
@pytest.mark.skipif('sys.platform == "win32" and platform.python_implementation() == "PyPy"')
def test_dist_subprocess_not_collocated(testdir, tmpdir):
scripts = testdir.makepyfile(parent_script=SCRIPT_PARENT,
child_script=SCRIPT_CHILD)
parent_script = scripts.dirpath().join('parent_script.py')
child_script = scripts.dirpath().join('child_script.py')
dir1 = tmpdir.mkdir('dir1')
dir2 = tmpdir.mkdir('dir2')
testdir.tmpdir.join('.coveragerc').write('''
[paths]
source =
%s
*/dir1
*/dir2
''' % scripts.dirpath())
result = testdir.runpytest('-v',
'--cov=%s' % scripts.dirpath(),
'--dist=load',
'--tx=popen//chdir=%s' % dir1,
'--tx=popen//chdir=%s' % dir2,
'--rsyncdir=%s' % child_script,
'--rsyncdir=%s' % parent_script,
'--rsyncdir=.coveragerc',
max_worker_restart_0,
parent_script)
result.stdout.fnmatch_lines([
'*- coverage: platform *, python * -*',
'child_script* %s*' % CHILD_SCRIPT_RESULT,
'parent_script* %s*' % PARENT_SCRIPT_RESULT,
])
assert result.ret == 0
def test_invalid_coverage_source(testdir):
script = testdir.makepyfile(SCRIPT)
testdir.makeini("""
[pytest]
console_output_style=classic
""")
result = testdir.runpytest('-v',
'--cov=non_existent_module',
'--cov-report=term-missing',
script)
result.stdout.fnmatch_lines([
'*10 passed*'
])
result.stderr.fnmatch_lines([
'Coverage.py warning: No data was collected.*'
])
result.stdout.fnmatch_lines([
'*Failed to generate report: No data to report.',
])
assert result.ret == 0
matching_lines = [line for line in result.outlines if '%' in line]
assert not matching_lines
@pytest.mark.skipif("'dev' in pytest.__version__")
@pytest.mark.skipif('sys.platform == "win32" and platform.python_implementation() == "PyPy"')
def test_dist_missing_data(testdir):
"""Test failure when using a worker without pytest-cov installed."""
venv_path = os.path.join(str(testdir.tmpdir), 'venv')
virtualenv.create_environment(venv_path)
if sys.platform == 'win32':
if platform.python_implementation() == "PyPy":
exe = os.path.join(venv_path, 'bin', 'python.exe')
else:
exe = os.path.join(venv_path, 'Scripts', 'python.exe')
else:
exe = os.path.join(venv_path, 'bin', 'python')
subprocess.check_call([
exe,
'-mpip',
'install',
'py==%s' % py.__version__,
'pytest==%s' % pytest.__version__,
'pytest_xdist==%s' % xdist.__version__
])
script = testdir.makepyfile(SCRIPT)
result = testdir.runpytest('-v',
'--cov=%s' % script.dirpath(),
'--cov-report=term-missing',
'--dist=load',
'--tx=popen//python=%s' % exe,
max_worker_restart_0,
script)
assert result.ret == 0
result.stdout.fnmatch_lines([
'*- coverage: failed workers -*'
])
def test_funcarg(testdir):
script = testdir.makepyfile(SCRIPT_FUNCARG)
result = testdir.runpytest('-v',
'--cov=%s' % script.dirpath(),
'--cov-report=term-missing',
script)
result.stdout.fnmatch_lines([
'*- coverage: platform *, python * -*',
'test_funcarg* 3 * 100%*',
'*1 passed*'
])
assert result.ret == 0
def test_funcarg_not_active(testdir):
script = testdir.makepyfile(SCRIPT_FUNCARG_NOT_ACTIVE)
result = testdir.runpytest('-v',
script)
result.stdout.fnmatch_lines([
'*1 passed*'
])
assert result.ret == 0
@pytest.mark.skipif("sys.version_info[0] < 3", reason="no context manager api on Python 2")
@pytest.mark.skipif('sys.platform == "win32"', reason="multiprocessing support is broken on Windows")
@pytest.mark.skipif('platform.python_implementation() == "PyPy"', reason="often deadlocks on PyPy")
def test_multiprocessing_pool(testdir):
pytest.importorskip('multiprocessing.util')
script = testdir.makepyfile('''
import multiprocessing
def target_fn(a):
%sse: # pragma: nocover
return None
def test_run_target():
from pytest_cov.embed import cleanup_on_sigterm
cleanup_on_sigterm()
for i in range(33):
with multiprocessing.Pool(3) as p:
p.map(target_fn, [i * 3 + j for j in range(3)])
p.join()
''' % ''.join('''if a == %r:
return a
el''' % i for i in range(99)))
result = testdir.runpytest('-v',
'--cov=%s' % script.dirpath(),
'--cov-report=term-missing',
script)
assert "Doesn't seem to be a coverage.py data file" not in result.stdout.str()
assert "Doesn't seem to be a coverage.py data file" not in result.stderr.str()
assert not testdir.tmpdir.listdir(".coverage.*")
result.stdout.fnmatch_lines([
'*- coverage: platform *, python * -*',
'test_multiprocessing_pool* 100%*',
'*1 passed*'
])
assert result.ret == 0
@pytest.mark.skipif('sys.platform == "win32"', reason="multiprocessing support is broken on Windows")
@pytest.mark.skipif('platform.python_implementation() == "PyPy"', reason="often deadlocks on PyPy")
def test_multiprocessing_pool_terminate(testdir):
pytest.importorskip('multiprocessing.util')