def test_python_cmdline(testcase: DataDrivenTestCase, step: int) -> None:
assert testcase.old_cwd is not None, "test was not properly set up"
# Write the program to a file.
program = '_program.py'
program_path = os.path.join(test_temp_dir, program)
with open(program_path, 'w', encoding='utf8') as file:
for s in testcase.input:
file.write('{}\n'.format(s))
args = parse_args(testcase.input[0])
args.append('--show-traceback')
args.append('--no-site-packages')
if '--error-summary' not in args:
args.append('--no-error-summary')
# Type check the program.
fixed = [python3_path, '-m', 'mypy']
env = os.environ.copy()
env['PYTHONPATH'] = PREFIX
process = subprocess.Popen(fixed + args,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
cwd=test_temp_dir,
env=env)
outb, errb = process.communicate()
result = process.returncode
# Split output into lines.
out = [s.rstrip('\n\r') for s in str(outb, 'utf8').splitlines()]
err = [s.rstrip('\n\r') for s in str(errb, 'utf8').splitlines()]
if "PYCHARM_HOSTED" in os.environ:
for pos, line in enumerate(err):
if line.startswith('pydev debugger: '):
# Delete the attaching debugger message itself, plus the extra newline added.
del err[pos:pos + 2]
break
# Remove temp file.
os.remove(program_path)
# Compare actual output to expected.
if testcase.output_files:
# Ignore stdout, but we insist on empty stderr and zero status.
if err or result:
raise AssertionError(
'Expected zero status and empty stderr%s, got %d and\n%s' %
(' on step %d' % step if testcase.output2 else '', result,
'\n'.join(err + out)))
check_test_output_files(testcase, step)
else:
if testcase.normalize_output:
out = normalize_error_messages(err + out)
obvious_result = 1 if out else 0
if obvious_result != result:
out.append('== Return code: {}'.format(result))
expected_out = testcase.output if step == 1 else testcase.output2[step]
# Strip "tmp/" out of the test so that # E: works...
expected_out = [s.replace("tmp" + os.sep, "") for s in expected_out]
assert_string_arrays_equal(
expected_out, out, 'Invalid output ({}, line {}){}'.format(
testcase.file, testcase.line,
' on step %d' % step if testcase.output2 else ''))
def run_case_once(self,
testcase: DataDrivenTestCase,
operations: List[FileOperation] = [],
incremental_step: int = 0) -> None:
original_program_text = '\n'.join(testcase.input)
module_data = self.parse_module(original_program_text,
incremental_step)
# Unload already loaded plugins, they may be updated.
for file, _ in testcase.files:
module = module_from_path(file)
if module.endswith('_plugin') and module in sys.modules:
del sys.modules[module]
if incremental_step == 0 or incremental_step == 1:
# In run 1, copy program text to program file.
for module_name, program_path, program_text in module_data:
if module_name == '__main__':
with open(program_path, 'w', encoding='utf8') as f:
f.write(program_text)
break
elif incremental_step > 1:
# In runs 2+, copy *.[num] files to * files.
for op in operations:
if isinstance(op, UpdateFile):
# Modify/create file
copy_and_fudge_mtime(op.source_path, op.target_path)
else:
# Delete file
# Use retries to work around potential flakiness on Windows (AppVeyor).
path = op.path
retry_on_error(lambda: os.remove(path))
# Parse options after moving files (in case mypy.ini is being moved).
options = parse_options(original_program_text, testcase,
incremental_step)
options.use_builtins_fixtures = True
options.show_traceback = True
# Enable some options automatically based on test file name.
if 'optional' in testcase.file:
options.strict_optional = True
if 'columns' in testcase.file:
options.show_column_numbers = True
if 'errorcodes' in testcase.file:
options.show_error_codes = True
if incremental_step and options.incremental:
# Don't overwrite # flags: --no-incremental in incremental test cases
options.incremental = True
else:
options.incremental = False
# Don't waste time writing cache unless we are specifically looking for it
if not testcase.writescache:
options.cache_dir = os.devnull
sources = []
for module_name, program_path, program_text in module_data:
# Always set to none so we're forced to reread the module in incremental mode
sources.append(
BuildSource(program_path, module_name,
None if incremental_step else program_text))
plugin_dir = os.path.join(test_data_prefix, 'plugins')
sys.path.insert(0, plugin_dir)
res = None
try:
res = build.build(sources=sources,
options=options,
alt_lib_path=test_temp_dir)
a = res.errors
except CompileError as e:
a = e.messages
finally:
assert sys.path[0] == plugin_dir
del sys.path[0]
if testcase.normalize_output:
a = normalize_error_messages(a)
# Make sure error messages match
if incremental_step == 0:
# Not incremental
msg = 'Unexpected type checker output ({}, line {})'
output = testcase.output
elif incremental_step == 1:
msg = 'Unexpected type checker output in incremental, run 1 ({}, line {})'
output = testcase.output
elif incremental_step > 1:
msg = ('Unexpected type checker output in incremental, run {}'.
format(incremental_step) + ' ({}, line {})')
output = testcase.output2.get(incremental_step, [])
else:
raise AssertionError()
if output != a and testcase.config.getoption('--update-data', False):
update_testcase_output(testcase, a)
assert_string_arrays_equal(output, a,
msg.format(testcase.file, testcase.line))
if res:
if options.cache_dir != os.devnull:
self.verify_cache(module_data, res.errors, res.manager,
res.graph)
name = 'targets'
if incremental_step:
name += str(incremental_step + 1)
expected = testcase.expected_fine_grained_targets.get(
incremental_step + 1)
actual = res.manager.processed_targets
# Skip the initial builtin cycle.
actual = [
t for t in actual if not any(
t.startswith(mod)
for mod in core_modules + ['mypy_extensions'])
]
if expected is not None:
assert_target_equivalence(name, expected, actual)
if incremental_step > 1:
suffix = '' if incremental_step == 2 else str(
incremental_step - 1)
expected_rechecked = testcase.expected_rechecked_modules.get(
incremental_step - 1)
if expected_rechecked is not None:
assert_module_equivalence('rechecked' + suffix,
expected_rechecked,
res.manager.rechecked_modules)
expected_stale = testcase.expected_stale_modules.get(
incremental_step - 1)
if expected_stale is not None:
assert_module_equivalence('stale' + suffix, expected_stale,
res.manager.stale_modules)
if testcase.output_files:
check_test_output_files(testcase,
incremental_step,
strip_prefix='tmp/')
