459 lines
13 KiB
Python
459 lines
13 KiB
Python
# -*- coding: utf8 -*-
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from __future__ import unicode_literals
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import sys
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import pytest
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WARNINGS_SUMMARY_HEADER = "warnings summary"
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@pytest.fixture
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def pyfile_with_warnings(testdir, request):
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"""
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Create a test file which calls a function in a module which generates warnings.
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"""
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testdir.syspathinsert()
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test_name = request.function.__name__
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module_name = test_name.lstrip("test_") + "_module"
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testdir.makepyfile(
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**{
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module_name: """
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import warnings
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def foo():
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warnings.warn(UserWarning("user warning"))
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warnings.warn(RuntimeWarning("runtime warning"))
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return 1
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""",
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test_name: """
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import {module_name}
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def test_func():
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assert {module_name}.foo() == 1
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""".format(
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module_name=module_name
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),
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}
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)
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@pytest.mark.filterwarnings("default")
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def test_normal_flow(testdir, pyfile_with_warnings):
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"""
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Check that the warnings section is displayed.
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"""
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result = testdir.runpytest()
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result.stdout.fnmatch_lines(
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[
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"*== %s ==*" % WARNINGS_SUMMARY_HEADER,
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"*normal_flow_module.py:3: UserWarning: user warning",
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'* warnings.warn(UserWarning("user warning"))',
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"*normal_flow_module.py:4: RuntimeWarning: runtime warning",
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'* warnings.warn(RuntimeWarning("runtime warning"))',
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"* 1 passed, 2 warnings*",
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]
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)
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@pytest.mark.filterwarnings("always")
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def test_setup_teardown_warnings(testdir, pyfile_with_warnings):
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testdir.makepyfile(
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"""
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import warnings
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import pytest
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@pytest.fixture
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def fix():
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warnings.warn(UserWarning("warning during setup"))
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yield
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warnings.warn(UserWarning("warning during teardown"))
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def test_func(fix):
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pass
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"""
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)
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result = testdir.runpytest()
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result.stdout.fnmatch_lines(
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[
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"*== %s ==*" % WARNINGS_SUMMARY_HEADER,
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"*test_setup_teardown_warnings.py:6: UserWarning: warning during setup",
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'*warnings.warn(UserWarning("warning during setup"))',
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"*test_setup_teardown_warnings.py:8: UserWarning: warning during teardown",
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'*warnings.warn(UserWarning("warning during teardown"))',
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"* 1 passed, 2 warnings*",
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]
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)
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@pytest.mark.parametrize("method", ["cmdline", "ini"])
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def test_as_errors(testdir, pyfile_with_warnings, method):
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args = ("-W", "error") if method == "cmdline" else ()
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if method == "ini":
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testdir.makeini(
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"""
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[pytest]
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filterwarnings= error
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"""
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)
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result = testdir.runpytest(*args)
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result.stdout.fnmatch_lines(
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[
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"E UserWarning: user warning",
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"as_errors_module.py:3: UserWarning",
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"* 1 failed in *",
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]
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)
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@pytest.mark.parametrize("method", ["cmdline", "ini"])
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def test_ignore(testdir, pyfile_with_warnings, method):
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args = ("-W", "ignore") if method == "cmdline" else ()
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if method == "ini":
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testdir.makeini(
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"""
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[pytest]
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filterwarnings= ignore
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"""
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)
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result = testdir.runpytest(*args)
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result.stdout.fnmatch_lines(["* 1 passed in *"])
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assert WARNINGS_SUMMARY_HEADER not in result.stdout.str()
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@pytest.mark.skipif(
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sys.version_info < (3, 0), reason="warnings message is unicode is ok in python3"
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)
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@pytest.mark.filterwarnings("always")
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def test_unicode(testdir, pyfile_with_warnings):
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testdir.makepyfile(
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"""
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# -*- coding: utf8 -*-
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import warnings
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import pytest
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@pytest.fixture
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def fix():
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warnings.warn(u"测试")
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yield
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def test_func(fix):
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pass
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"""
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)
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result = testdir.runpytest()
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result.stdout.fnmatch_lines(
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[
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"*== %s ==*" % WARNINGS_SUMMARY_HEADER,
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"*test_unicode.py:8: UserWarning: \u6d4b\u8bd5*",
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"* 1 passed, 1 warnings*",
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]
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)
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@pytest.mark.skipif(
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sys.version_info >= (3, 0),
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reason="warnings message is broken as it is not str instance",
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)
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def test_py2_unicode(testdir, pyfile_with_warnings):
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if getattr(sys, "pypy_version_info", ())[:2] == (5, 9) and sys.platform.startswith(
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"win"
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):
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pytest.xfail("fails with unicode error on PyPy2 5.9 and Windows (#2905)")
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testdir.makepyfile(
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"""
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# -*- coding: utf8 -*-
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import warnings
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import pytest
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@pytest.fixture
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def fix():
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warnings.warn(u"测试")
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yield
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@pytest.mark.filterwarnings('always')
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def test_func(fix):
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pass
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"""
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)
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result = testdir.runpytest()
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result.stdout.fnmatch_lines(
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[
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"*== %s ==*" % WARNINGS_SUMMARY_HEADER,
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"*test_py2_unicode.py:8: UserWarning: \\u6d4b\\u8bd5",
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'*warnings.warn(u"\u6d4b\u8bd5")',
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"*warnings.py:*: UnicodeWarning: Warning is using unicode non*",
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"* 1 passed, 2 warnings*",
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]
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)
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def test_py2_unicode_ascii(testdir):
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"""Ensure that our warning about 'unicode warnings containing non-ascii messages'
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does not trigger with ascii-convertible messages"""
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testdir.makeini("[pytest]")
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testdir.makepyfile(
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"""
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import pytest
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import warnings
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@pytest.mark.filterwarnings('always')
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def test_func():
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warnings.warn(u"hello")
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"""
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)
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result = testdir.runpytest()
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result.stdout.fnmatch_lines(
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[
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"*== %s ==*" % WARNINGS_SUMMARY_HEADER,
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'*warnings.warn(u"hello")',
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"* 1 passed, 1 warnings in*",
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]
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)
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def test_works_with_filterwarnings(testdir):
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"""Ensure our warnings capture does not mess with pre-installed filters (#2430)."""
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testdir.makepyfile(
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"""
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import warnings
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class MyWarning(Warning):
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pass
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warnings.filterwarnings("error", category=MyWarning)
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class TestWarnings(object):
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def test_my_warning(self):
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try:
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warnings.warn(MyWarning("warn!"))
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assert False
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except MyWarning:
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assert True
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"""
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)
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result = testdir.runpytest()
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result.stdout.fnmatch_lines(["*== 1 passed in *"])
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@pytest.mark.parametrize("default_config", ["ini", "cmdline"])
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def test_filterwarnings_mark(testdir, default_config):
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"""
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Test ``filterwarnings`` mark works and takes precedence over command line and ini options.
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"""
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if default_config == "ini":
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testdir.makeini(
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"""
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[pytest]
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filterwarnings = always
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"""
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)
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testdir.makepyfile(
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"""
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import warnings
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import pytest
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@pytest.mark.filterwarnings('ignore::RuntimeWarning')
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def test_ignore_runtime_warning():
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warnings.warn(RuntimeWarning())
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@pytest.mark.filterwarnings('error')
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def test_warning_error():
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warnings.warn(RuntimeWarning())
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def test_show_warning():
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warnings.warn(RuntimeWarning())
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"""
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)
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result = testdir.runpytest("-W always" if default_config == "cmdline" else "")
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result.stdout.fnmatch_lines(["*= 1 failed, 2 passed, 1 warnings in *"])
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def test_non_string_warning_argument(testdir):
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"""Non-str argument passed to warning breaks pytest (#2956)"""
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testdir.makepyfile(
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"""
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import warnings
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import pytest
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def test():
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warnings.warn(UserWarning(1, u'foo'))
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"""
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)
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result = testdir.runpytest("-W", "always")
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result.stdout.fnmatch_lines(["*= 1 passed, 1 warnings in *"])
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def test_filterwarnings_mark_registration(testdir):
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"""Ensure filterwarnings mark is registered"""
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testdir.makepyfile(
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"""
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import pytest
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@pytest.mark.filterwarnings('error')
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def test_func():
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pass
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"""
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)
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result = testdir.runpytest("--strict")
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assert result.ret == 0
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@pytest.mark.filterwarnings("always")
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def test_warning_captured_hook(testdir, pyfile_with_warnings):
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collected = []
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class WarningCollector:
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def pytest_warning_captured(self, warning_message, when, item):
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collected.append((warning_message.category, when, item.name))
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result = testdir.runpytest(plugins=[WarningCollector()])
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result.stdout.fnmatch_lines(["*1 passed*"])
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expected = [
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(UserWarning, "runtest", "test_func"),
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(RuntimeWarning, "runtest", "test_func"),
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]
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assert collected == expected
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@pytest.mark.filterwarnings("always")
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def test_collection_warnings(testdir):
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"""
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Check that we also capture warnings issued during test collection (#3251).
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"""
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testdir.makepyfile(
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"""
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import warnings
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warnings.warn(UserWarning("collection warning"))
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def test_foo():
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pass
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"""
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)
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result = testdir.runpytest()
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result.stdout.fnmatch_lines(
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[
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"*== %s ==*" % WARNINGS_SUMMARY_HEADER,
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"*collection_warnings.py:3: UserWarning: collection warning",
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' warnings.warn(UserWarning("collection warning"))',
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"* 1 passed, 1 warnings*",
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]
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)
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@pytest.mark.filterwarnings("default")
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@pytest.mark.parametrize("ignore_pytest_warnings", ["no", "ini", "cmdline"])
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def test_hide_pytest_internal_warnings(testdir, ignore_pytest_warnings):
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"""Make sure we can ignore internal pytest warnings using a warnings filter."""
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testdir.makepyfile(
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"""
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import pytest
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import warnings
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warnings.warn(pytest.PytestWarning("some internal warning"))
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def test_bar():
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pass
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"""
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)
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if ignore_pytest_warnings == "ini":
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testdir.makeini(
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"""
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[pytest]
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filterwarnings = ignore::pytest.PytestWarning
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"""
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)
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args = (
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["-W", "ignore::pytest.PytestWarning"]
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if ignore_pytest_warnings == "cmdline"
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else []
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)
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result = testdir.runpytest(*args)
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if ignore_pytest_warnings != "no":
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assert WARNINGS_SUMMARY_HEADER not in result.stdout.str()
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else:
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result.stdout.fnmatch_lines(
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[
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"*== %s ==*" % WARNINGS_SUMMARY_HEADER,
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"*test_hide_pytest_internal_warnings.py:4: PytestWarning: some internal warning",
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"* 1 passed, 1 warnings *",
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]
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)
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class TestDeprecationWarningsByDefault:
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"""
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Note: all pytest runs are executed in a subprocess so we don't inherit warning filters
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from pytest's own test suite
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"""
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def create_file(self, testdir, mark=""):
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testdir.makepyfile(
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"""
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import pytest, warnings
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warnings.warn(DeprecationWarning("collection"))
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{mark}
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def test_foo():
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warnings.warn(PendingDeprecationWarning("test run"))
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""".format(
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mark=mark
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)
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)
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def test_shown_by_default(self, testdir):
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self.create_file(testdir)
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result = testdir.runpytest_subprocess()
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result.stdout.fnmatch_lines(
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[
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"*== %s ==*" % WARNINGS_SUMMARY_HEADER,
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"*test_shown_by_default.py:3: DeprecationWarning: collection",
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"*test_shown_by_default.py:7: PendingDeprecationWarning: test run",
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"* 1 passed, 2 warnings*",
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]
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)
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def test_hidden_by_ini(self, testdir):
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self.create_file(testdir)
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testdir.makeini(
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"""
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[pytest]
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filterwarnings = once::UserWarning
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"""
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)
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result = testdir.runpytest_subprocess()
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assert WARNINGS_SUMMARY_HEADER not in result.stdout.str()
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def test_hidden_by_mark(self, testdir):
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"""Should hide the deprecation warning from the function, but the warning during collection should
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be displayed normally.
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"""
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self.create_file(
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testdir, mark='@pytest.mark.filterwarnings("once::UserWarning")'
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)
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result = testdir.runpytest_subprocess()
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result.stdout.fnmatch_lines(
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[
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"*== %s ==*" % WARNINGS_SUMMARY_HEADER,
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"*test_hidden_by_mark.py:3: DeprecationWarning: collection",
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"* 1 passed, 1 warnings*",
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]
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)
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def test_hidden_by_cmdline(self, testdir):
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self.create_file(testdir)
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result = testdir.runpytest_subprocess("-W", "once::UserWarning")
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assert WARNINGS_SUMMARY_HEADER not in result.stdout.str()
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def test_hidden_by_system(self, testdir, monkeypatch):
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self.create_file(testdir)
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monkeypatch.setenv(str("PYTHONWARNINGS"), str("once::UserWarning"))
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result = testdir.runpytest_subprocess()
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assert WARNINGS_SUMMARY_HEADER not in result.stdout.str()
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