blob: fa11e8f9643a6806da5fd1d9ba90e0f2f771d50c [file] [log] [blame]
# -*- Python -*-
import os
import platform
import sys
import subprocess
import lit.formats
from lit.llvm import llvm_config
# Configuration file for the 'lit' test runner.
# name: The name of this test suite. = 'lit'
# testFormat: The test format to use to interpret tests.
config.test_format = lit.formats.ShTest(execute_external=False)
# suffixes: A list of file extensions to treat as test files.
config.suffixes = ['.py']
# excludes: A list of individual files to exclude.
config.excludes = ['Inputs']
# test_source_root: The root path where tests are located.
config.test_source_root = os.path.dirname(__file__)
config.test_exec_root = config.test_source_root
config.target_triple = '(unused)'
llvm_src_root = getattr(config, 'llvm_src_root', None)
if llvm_src_root:
# ``test_source_root`` may be in LLVM's binary build directory which does not contain
# ````, so use `llvm_src_root` instead.
lit_path = os.path.join(llvm_src_root, 'utils', 'lit')
lit_path = os.path.join(config.test_source_root, '..')
# Required because some tests import the lit module
if llvm_config:
llvm_config.with_environment('PYTHONPATH', lit_path, append_path=True)
config.environment['PYTHONPATH'] = os.pathsep.join([lit_path])
# Do not add user-site packages directory to the python search path. This avoids test failures if there's an
# incompatible lit module installed inside the user-site packages directory, as it gets prioritized over the lit
# from the PYTHONPATH.
config.environment['PYTHONNOUSERSITE'] = '1'
# Add llvm and lit tools directories if this config is being loaded indirectly.
# In this case, we can also expect llvm_config to have been imported correctly.
for attribute in ('llvm_tools_dir', 'lit_tools_dir'):
directory = getattr(config, attribute, None)
if directory:
llvm_config.with_environment('PATH', directory, append_path=True)
# This test suite calls %{lit} to test lit's behavior for the sample test
# suites in %{inputs}. This test suite's results are then determined in part
# by %{lit}'s textual output, which includes the output of FileCheck calls
# within %{inputs}'s test suites. Thus, %{lit} clears environment variables
# that can affect FileCheck's output. It also includes "--order=lexical -j1"
# to ensure predictable test order, as it is often required for FileCheck
# matches.
config.substitutions.append(('%{inputs}', os.path.join(
config.test_source_root, 'Inputs')))
config.substitutions.append(('%{lit}', '%{lit-no-order-opt} --order=lexical'))
"{env} %{{python}} {lit} -j1".format(
env="env -u FILECHECK_OPTS",
lit=os.path.join(lit_path, ''))))
config.substitutions.append(('%{python}', '"%s"' % (sys.executable)))
# Enable reporting, assuming the coverage module has been installed
# and in the virtualenv has been modified appropriately.
if lit_config.params.get('check-coverage', None):
config.environment['COVERAGE_PROCESS_START'] = os.path.join(
os.path.dirname(__file__), ".coveragerc")
# Add a feature to detect if test cancellation is available. Check the ability
# to do cancellation in the same environment as where RUN commands are run.
# The reason is that on most systems cancellation depends on psutil being
# available and RUN commands are run with a cleared PYTHONPATH and user site
# packages disabled.
testing_script_path = "/".join((os.path.dirname(__file__),
proc =[sys.executable, testing_script_path],
stderr=subprocess.PIPE, env=config.environment,
if proc.returncode == 0:
errormsg = proc.stderr
lit_config.warning('Setting a timeout per test not supported. ' + errormsg
+ ' Some tests will be skipped and the --timeout'
' command line argument will not work.')
# When running the lit tests standalone, we want to define the same features
# that the llvm_config defines. This means that the 'system-windows' feature
# (and any others) need to match the names in llvm_config for consistency
if not llvm_config:
if sys.platform.startswith('win') or sys.platform.startswith('cygwin'):
if platform.system() == 'AIX':
# For each of lit's internal shell commands ('env', 'cd', 'diff', etc.), put
# a fake command that always fails at the start of PATH. This helps us check
# that we always use lit's internal version rather than some external version
# that might not be present or behave correctly on all platforms. Don't do
# this for 'echo' because an external version is used when it appears in a
# pipeline. Don't do this for ':' because it doesn't appear to be a valid file
# name under Windows. Don't do this for 'not' because lit uses the external
# 'not' throughout a RUN line that calls 'not --crash'.
test_bin = os.path.join(os.path.dirname(__file__), 'Inputs', 'fake-externals')
config.environment['PATH'] = os.path.pathsep.join((test_bin,