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meson/unittests/failuretests.py

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# Copyright 2016-2021 The Meson development team
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# http://www.apache.org/licenses/LICENSE-2.0
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import subprocess
import tempfile
import os
import shutil
import unittest
from contextlib import contextmanager
from mesonbuild.mesonlib import (
MachineChoice, is_windows, is_osx, windows_proof_rmtree, windows_proof_rm
)
from mesonbuild.compilers import (
detect_objc_compiler, detect_objcpp_compiler
)
from mesonbuild.mesonlib import EnvironmentException, MesonException
from mesonbuild.programs import ExternalProgram
from run_tests import (
get_fake_env
)
from .baseplatformtests import BasePlatformTests
from .helpers import *
@contextmanager
def no_pkgconfig():
'''
A context manager that overrides shutil.which and ExternalProgram to force
them to return None for pkg-config to simulate it not existing.
'''
old_which = shutil.which
old_search = ExternalProgram._search
def new_search(self, name, search_dir):
if name == 'pkg-config':
return [None]
return old_search(self, name, search_dir)
def new_which(cmd, *kwargs):
if cmd == 'pkg-config':
return None
return old_which(cmd, *kwargs)
shutil.which = new_which
ExternalProgram._search = new_search
try:
yield
finally:
shutil.which = old_which
ExternalProgram._search = old_search
class FailureTests(BasePlatformTests):
'''
Tests that test failure conditions. Build files here should be dynamically
generated and static tests should go into `test cases/failing*`.
This is useful because there can be many ways in which a particular
function can fail, and creating failing tests for all of them is tedious
and slows down testing.
'''
dnf = "[Dd]ependency.*not found(:.*)?"
nopkg = '[Pp]kg-config.*not found'
def setUp(self):
super().setUp()
self.srcdir = os.path.realpath(tempfile.mkdtemp())
self.mbuild = os.path.join(self.srcdir, 'meson.build')
self.moptions = os.path.join(self.srcdir, 'meson_options.txt')
def tearDown(self):
super().tearDown()
windows_proof_rmtree(self.srcdir)
def assertMesonRaises(self, contents, match, *,
extra_args=None,
langs=None,
meson_version=None,
options=None,
override_envvars=None):
'''
Assert that running meson configure on the specified @contents raises
a error message matching regex @match.
'''
if langs is None:
langs = []
with open(self.mbuild, 'w', encoding='utf-8') as f:
f.write("project('failure test', 'c', 'cpp'")
if meson_version:
f.write(f", meson_version: '{meson_version}'")
f.write(")\n")
for lang in langs:
f.write(f"add_languages('{lang}', required : false)\n")
f.write(contents)
if options is not None:
with open(self.moptions, 'w', encoding='utf-8') as f:
f.write(options)
o = {'MESON_FORCE_BACKTRACE': '1'}
if override_envvars is None:
override_envvars = o
else:
override_envvars.update(o)
# Force tracebacks so we can detect them properly
with self.assertRaisesRegex(MesonException, match, msg=contents):
# Must run in-process or we'll get a generic CalledProcessError
self.init(self.srcdir, extra_args=extra_args,
inprocess=True,
override_envvars = override_envvars)
def obtainMesonOutput(self, contents, match, extra_args, langs, meson_version=None):
if langs is None:
langs = []
with open(self.mbuild, 'w', encoding='utf-8') as f:
f.write("project('output test', 'c', 'cpp'")
if meson_version:
f.write(f", meson_version: '{meson_version}'")
f.write(")\n")
for lang in langs:
f.write(f"add_languages('{lang}', required : false)\n")
f.write(contents)
# Run in-process for speed and consistency with assertMesonRaises
return self.init(self.srcdir, extra_args=extra_args, inprocess=True)
def assertMesonOutputs(self, contents, match, extra_args=None, langs=None, meson_version=None):
'''
Assert that running meson configure on the specified @contents outputs
something that matches regex @match.
'''
out = self.obtainMesonOutput(contents, match, extra_args, langs, meson_version)
self.assertRegex(out, match)
def assertMesonDoesNotOutput(self, contents, match, extra_args=None, langs=None, meson_version=None):
'''
Assert that running meson configure on the specified @contents does not output
something that matches regex @match.
'''
out = self.obtainMesonOutput(contents, match, extra_args, langs, meson_version)
self.assertNotRegex(out, match)
@skipIfNoPkgconfig
def test_dependency(self):
if subprocess.call(['pkg-config', '--exists', 'zlib']) != 0:
raise unittest.SkipTest('zlib not found with pkg-config')
a = (("dependency('zlib', method : 'fail')", "'fail' is invalid"),
("dependency('zlib', static : '1')", "[Ss]tatic.*boolean"),
("dependency('zlib', version : 1)", "Item must be a list or one of <class 'str'>"),
("dependency('zlib', required : 1)", "[Rr]equired.*boolean"),
("dependency('zlib', method : 1)", "[Mm]ethod.*string"),
("dependency('zlibfail')", self.dnf),)
for contents, match in a:
self.assertMesonRaises(contents, match)
def test_apple_frameworks_dependency(self):
if not is_osx():
raise unittest.SkipTest('only run on macOS')
self.assertMesonRaises("dependency('appleframeworks')",
"requires at least one module")
def test_extraframework_dependency_method(self):
code = "dependency('metal', method : 'extraframework')"
if not is_osx():
self.assertMesonRaises(code, self.dnf)
else:
# metal framework is always available on macOS
self.assertMesonOutputs(code, '[Dd]ependency.*metal.*found.*YES')
def test_sdl2_notfound_dependency(self):
# Want to test failure, so skip if available
if shutil.which('sdl2-config'):
raise unittest.SkipTest('sdl2-config found')
self.assertMesonRaises("dependency('sdl2', method : 'sdlconfig')", self.dnf)
if shutil.which('pkg-config'):
self.assertMesonRaises("dependency('sdl2', method : 'pkg-config')", self.dnf)
with no_pkgconfig():
# Look for pkg-config, cache it, then
# Use cached pkg-config without erroring out, then
# Use cached pkg-config to error out
code = "dependency('foobarrr', method : 'pkg-config', required : false)\n" \
"dependency('foobarrr2', method : 'pkg-config', required : false)\n" \
"dependency('sdl2', method : 'pkg-config')"
self.assertMesonRaises(code, self.nopkg)
def test_gnustep_notfound_dependency(self):
# Want to test failure, so skip if available
if shutil.which('gnustep-config'):
raise unittest.SkipTest('gnustep-config found')
self.assertMesonRaises("dependency('gnustep')",
f"(requires a Objc compiler|{self.dnf})",
langs = ['objc'])
def test_wx_notfound_dependency(self):
# Want to test failure, so skip if available
if shutil.which('wx-config-3.0') or shutil.which('wx-config') or shutil.which('wx-config-gtk3'):
raise unittest.SkipTest('wx-config, wx-config-3.0 or wx-config-gtk3 found')
self.assertMesonRaises("dependency('wxwidgets')", self.dnf)
self.assertMesonOutputs("dependency('wxwidgets', required : false)",
"Run-time dependency .*WxWidgets.* found: .*NO.*")
def test_wx_dependency(self):
if not shutil.which('wx-config-3.0') and not shutil.which('wx-config') and not shutil.which('wx-config-gtk3'):
raise unittest.SkipTest('Neither wx-config, wx-config-3.0 nor wx-config-gtk3 found')
self.assertMesonRaises("dependency('wxwidgets', modules : 1)",
"module argument is not a string")
def test_llvm_dependency(self):
self.assertMesonRaises("dependency('llvm', modules : 'fail')",
f"(required.*fail|{self.dnf})")
def test_boost_notfound_dependency(self):
# Can be run even if Boost is found or not
self.assertMesonRaises("dependency('boost', modules : 1)",
"module.*not a string")
self.assertMesonRaises("dependency('boost', modules : 'fail')",
f"(fail.*not found|{self.dnf})")
def test_boost_BOOST_ROOT_dependency(self):
# Test BOOST_ROOT; can be run even if Boost is found or not
self.assertMesonRaises("dependency('boost')",
f"(boost_root.*absolute|{self.dnf})",
override_envvars = {'BOOST_ROOT': 'relative/path'})
def test_dependency_invalid_method(self):
code = '''zlib_dep = dependency('zlib', required : false)
zlib_dep.get_configtool_variable('foo')
'''
self.assertMesonRaises(code, ".* is not a config-tool dependency")
code = '''zlib_dep = dependency('zlib', required : false)
dep = declare_dependency(dependencies : zlib_dep)
dep.get_pkgconfig_variable('foo')
'''
self.assertMesonRaises(code, "Method.*pkgconfig.*is invalid.*internal")
code = '''zlib_dep = dependency('zlib', required : false)
dep = declare_dependency(dependencies : zlib_dep)
dep.get_configtool_variable('foo')
'''
self.assertMesonRaises(code, "Method.*configtool.*is invalid.*internal")
def test_objc_cpp_detection(self):
'''
Test that when we can't detect objc or objcpp, we fail gracefully.
'''
env = get_fake_env()
try:
detect_objc_compiler(env, MachineChoice.HOST)
detect_objcpp_compiler(env, MachineChoice.HOST)
except EnvironmentException:
code = "add_languages('objc')\nadd_languages('objcpp')"
self.assertMesonRaises(code, "Unknown compiler")
return
raise unittest.SkipTest("objc and objcpp found, can't test detection failure")
def test_subproject_variables(self):
'''
Test that:
1. The correct message is outputted when a not-required dep is not
found and the fallback subproject is also not found.
2. A not-required fallback dependency is not found because the
subproject failed to parse.
3. A not-found not-required dep with a fallback subproject outputs the
correct message when the fallback subproject is found but the
variable inside it is not.
4. A fallback dependency is found from the subproject parsed in (3)
5. A wrap file from a subproject is used but fails because it does not
contain required keys.
'''
tdir = os.path.join(self.unit_test_dir, '20 subproj dep variables')
stray_file = os.path.join(tdir, 'subprojects/subsubproject.wrap')
if os.path.exists(stray_file):
windows_proof_rm(stray_file)
out = self.init(tdir, inprocess=True)
self.assertRegex(out, r"Neither a subproject directory nor a .*nosubproj.wrap.* file was found")
self.assertRegex(out, r'Function does not take positional arguments.')
self.assertRegex(out, r'Dependency .*somenotfounddep.* from subproject .*subprojects/somesubproj.* found: .*NO.*')
self.assertRegex(out, r'Dependency .*zlibproxy.* from subproject .*subprojects.*somesubproj.* found: .*YES.*')
self.assertRegex(out, r'Missing key .*source_filename.* in subsubproject.wrap')
windows_proof_rm(stray_file)
def test_exception_exit_status(self):
'''
Test exit status on python exception
'''
tdir = os.path.join(self.unit_test_dir, '21 exit status')
with self.assertRaises(subprocess.CalledProcessError) as cm:
self.init(tdir, inprocess=False, override_envvars = {'MESON_UNIT_TEST': '1', 'MESON_FORCE_BACKTRACE': ''})
self.assertEqual(cm.exception.returncode, 2)
self.wipe()
def test_dict_requires_key_value_pairs(self):
self.assertMesonRaises("dict = {3, 'foo': 'bar'}",
'Only key:value pairs are valid in dict construction.')
self.assertMesonRaises("{'foo': 'bar', 3}",
'Only key:value pairs are valid in dict construction.')
def test_dict_forbids_duplicate_keys(self):
self.assertMesonRaises("dict = {'a': 41, 'a': 42}",
'Duplicate dictionary key: a.*')
def test_dict_forbids_integer_key(self):
self.assertMesonRaises("dict = {3: 'foo'}",
'Key must be a string.*')
def test_using_too_recent_feature(self):
# Here we use a dict, which was introduced in 0.47.0
self.assertMesonOutputs("dict = {}",
".*WARNING.*Project targets.*but.*",
meson_version='>= 0.46.0')
def test_using_recent_feature(self):
# Same as above, except the meson version is now appropriate
self.assertMesonDoesNotOutput("dict = {}",
".*WARNING.*Project targets.*but.*",
meson_version='>= 0.47')
def test_using_too_recent_feature_dependency(self):
self.assertMesonOutputs("dependency('pcap', required: false)",
".*WARNING.*Project targets.*but.*",
meson_version='>= 0.41.0')
def test_vcs_tag_featurenew_build_always_stale(self):
'https://github.com/mesonbuild/meson/issues/3904'
vcs_tag = '''version_data = configuration_data()
version_data.set('PROJVER', '@VCS_TAG@')
vf = configure_file(output : 'version.h.in', configuration: version_data)
f = vcs_tag(input : vf, output : 'version.h')
'''
msg = '.*WARNING:.*feature.*build_always_stale.*custom_target.*'
self.assertMesonDoesNotOutput(vcs_tag, msg, meson_version='>=0.43')
def test_missing_subproject_not_required_and_required(self):
self.assertMesonRaises("sub1 = subproject('not-found-subproject', required: false)\n" +
"sub2 = subproject('not-found-subproject', required: true)",
""".*Subproject "subprojects/not-found-subproject" required but not found.*""")
def test_get_variable_on_not_found_project(self):
self.assertMesonRaises("sub1 = subproject('not-found-subproject', required: false)\n" +
"sub1.get_variable('naaa')",
"""Subproject "subprojects/not-found-subproject" disabled can't get_variable on it.""")
def test_version_checked_before_parsing_options(self):
'''
https://github.com/mesonbuild/meson/issues/5281
'''
options = "option('some-option', type: 'foo', value: '')"
match = 'Meson version is.*but project requires >=2000'
self.assertMesonRaises("", match, meson_version='>=2000', options=options)
def test_assert_default_message(self):
self.assertMesonRaises("k1 = 'a'\n" +
"assert({\n" +
" k1: 1,\n" +
"}['a'] == 2)\n",
r"Assert failed: {k1 : 1}\['a'\] == 2")
def test_wrap_nofallback(self):
self.assertMesonRaises("dependency('notfound', fallback : ['foo', 'foo_dep'])",
r"Dependency 'notfound' is required but not found.",
extra_args=['--wrap-mode=nofallback'])
def test_message(self):
self.assertMesonOutputs("message('Array:', ['a', 'b'])",
r"Message:.* Array: \['a', 'b'\]")
def test_warning(self):
self.assertMesonOutputs("warning('Array:', ['a', 'b'])",
r"WARNING:.* Array: \['a', 'b'\]")
def test_override_dependency_twice(self):
self.assertMesonRaises("meson.override_dependency('foo', declare_dependency())\n" +
"meson.override_dependency('foo', declare_dependency())",
"""Tried to override dependency 'foo' which has already been resolved or overridden""")
@unittest.skipIf(is_windows(), 'zlib is not available on Windows')
def test_override_resolved_dependency(self):
self.assertMesonRaises("dependency('zlib')\n" +
"meson.override_dependency('zlib', declare_dependency())",
"""Tried to override dependency 'zlib' which has already been resolved or overridden""")
def test_error_func(self):
self.assertMesonRaises("error('a', 'b', ['c', ['d', {'e': 'f'}]], 'g')",
r"Problem encountered: a b \['c', \['d', {'e' : 'f'}\]\] g")