# -*- Python -*- vim: set ft=python ts=4 sw=4 expandtab tw=79:
# Configuration file for the 'lit' test runner.
import os
import site

site.addsitedir(os.path.dirname(__file__))


# Tell pylint that we know config and lit_config exist somewhere.
if 'PYLINT_IMPORT' in os.environ:
    config = object()
    lit_config = object()

# name: The name of this test suite.
config.name = 'libc++'

# suffixes: A list of file extensions to treat as test files.
config.suffixes = ['.cpp']

# test_source_root: The root path where tests are located.
config.test_source_root = os.path.dirname(__file__)

# Infer the test_exec_root from the libcxx_object root.
libcxx_obj_root = getattr(config, 'libcxx_obj_root', None)
if libcxx_obj_root is not None:
    config.test_exec_root = os.path.join(libcxx_obj_root, 'test')

# Check that the test exec root is known.
if config.test_exec_root is None:
    # Otherwise, we haven't loaded the site specific configuration (the user is
    # probably trying to run on a test file directly, and either the site
    # configuration hasn't been created by the build system, or we are in an
    # out-of-tree build situation).
    site_cfg = lit_config.params.get('libcxx_site_config',
                                     os.environ.get('LIBCXX_SITE_CONFIG'))
    if not site_cfg:
        lit_config.warning('No site specific configuration file found!'
                           ' Running the tests in the default configuration.')
        # TODO: Set test_exec_root to a temporary directory where output files
        # can be placed. This is needed for ShTest.
    elif not os.path.isfile(site_cfg):
        lit_config.fatal(
            "Specified site configuration file does not exist: '%s'" %
            site_cfg)
    else:
        lit_config.note('using site specific configuration at %s' % site_cfg)
        lit_config.load_config(config, site_cfg)
        raise SystemExit()

cfg_variant = getattr(config, 'configuration_variant', 'libcxx')
if cfg_variant:
    print 'Using configuration variant: %s' % cfg_variant

# Load the Configuration class from the module name <cfg_variant>.test.config.
config_module_name = '.'.join([cfg_variant, 'test', 'config'])
config_module = __import__(config_module_name, fromlist=['Configuration'])

configuration = config_module.Configuration(lit_config, config)
configuration.configure()
config.test_format = configuration.get_test_format()
