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"""
Test discovery functions.
"""
import os
import sys
from lit.TestingConfig import TestingConfig
from lit import LitConfig, Test
def dirContainsTestSuite(path, lit_config):
cfgpath = os.path.join(path, lit_config.site_config_name)
if os.path.exists(cfgpath):
return cfgpath
cfgpath = os.path.join(path, lit_config.config_name)
if os.path.exists(cfgpath):
return cfgpath
def getTestSuite(item, litConfig, cache):
"""getTestSuite(item, litConfig, cache) -> (suite, relative_path)
Find the test suite containing @arg item.
@retval (None, ...) - Indicates no test suite contains @arg item.
@retval (suite, relative_path) - The suite that @arg item is in, and its
relative path inside that suite.
"""
def search1(path):
# Check for a site config or a lit config.
cfgpath = dirContainsTestSuite(path, litConfig)
# If we didn't find a config file, keep looking.
if not cfgpath:
parent,base = os.path.split(path)
if parent == path:
return (None, ())
ts, relative = search(parent)
return (ts, relative + (base,))
# We found a config file, load it.
if litConfig.debug:
litConfig.note('loading suite config %r' % cfgpath)
cfg = TestingConfig.frompath(cfgpath, None, litConfig, mustExist = True)
source_root = os.path.realpath(cfg.test_source_root or path)
exec_root = os.path.realpath(cfg.test_exec_root or path)
return Test.TestSuite(cfg.name, source_root, exec_root, cfg), ()
def search(path):
# Check for an already instantiated test suite.
res = cache.get(path)
if res is None:
cache[path] = res = search1(path)
return res
# Canonicalize the path.
item = os.path.realpath(item)
# Skip files and virtual components.
components = []
while not os.path.isdir(item):
parent,base = os.path.split(item)
if parent == item:
return (None, ())
components.append(base)
item = parent
components.reverse()
ts, relative = search(item)
return ts, tuple(relative + tuple(components))
def getLocalConfig(ts, path_in_suite, litConfig, cache):
def search1(path_in_suite):
# Get the parent config.
if not path_in_suite:
parent = ts.config
else:
parent = search(path_in_suite[:-1])
# Load the local configuration.
source_path = ts.getSourcePath(path_in_suite)
cfgpath = os.path.join(source_path, litConfig.local_config_name)
if litConfig.debug:
litConfig.note('loading local config %r' % cfgpath)
return TestingConfig.frompath(cfgpath, parent, litConfig,
mustExist = False,
config = parent.clone(cfgpath))
def search(path_in_suite):
key = (ts, path_in_suite)
res = cache.get(key)
if res is None:
cache[key] = res = search1(path_in_suite)
return res
return search(path_in_suite)
def getTests(path, litConfig, testSuiteCache, localConfigCache):
# Find the test suite for this input and its relative path.
ts,path_in_suite = getTestSuite(path, litConfig, testSuiteCache)
if ts is None:
litConfig.warning('unable to find test suite for %r' % path)
return (),()
if litConfig.debug:
litConfig.note('resolved input %r to %r::%r' % (path, ts.name,
path_in_suite))
return ts, getTestsInSuite(ts, path_in_suite, litConfig,
testSuiteCache, localConfigCache)
def getTestsInSuite(ts, path_in_suite, litConfig,
testSuiteCache, localConfigCache):
# Check that the source path exists (errors here are reported by the
# caller).
source_path = ts.getSourcePath(path_in_suite)
if not os.path.exists(source_path):
return
# Check if the user named a test directly.
if not os.path.isdir(source_path):
lc = getLocalConfig(ts, path_in_suite[:-1], litConfig, localConfigCache)
yield Test.Test(ts, path_in_suite, lc)
return
# Otherwise we have a directory to search for tests, start by getting the
# local configuration.
lc = getLocalConfig(ts, path_in_suite, litConfig, localConfigCache)
# Search for tests.
if lc.test_format is not None:
for res in lc.test_format.getTestsInDirectory(ts, path_in_suite,
litConfig, lc):
yield res
# Search subdirectories.
for filename in os.listdir(source_path):
# FIXME: This doesn't belong here?
if filename in ('Output', '.svn', '.git') or filename in lc.excludes:
continue
# Ignore non-directories.
file_sourcepath = os.path.join(source_path, filename)
if not os.path.isdir(file_sourcepath):
continue
# Check for nested test suites, first in the execpath in case there is a
# site configuration and then in the source path.
file_execpath = ts.getExecPath(path_in_suite + (filename,))
if dirContainsTestSuite(file_execpath, litConfig):
sub_ts, subiter = getTests(file_execpath, litConfig,
testSuiteCache, localConfigCache)
elif dirContainsTestSuite(file_sourcepath, litConfig):
sub_ts, subiter = getTests(file_sourcepath, litConfig,
testSuiteCache, localConfigCache)
else:
# Otherwise, continue loading from inside this test suite.
subiter = getTestsInSuite(ts, path_in_suite + (filename,),
litConfig, testSuiteCache,
localConfigCache)
sub_ts = None
N = 0
for res in subiter:
N += 1
yield res
if sub_ts and not N:
litConfig.warning('test suite %r contained no tests' % sub_ts.name)
def find_tests_for_inputs(lit_config, inputs):
"""
find_tests_for_inputs(lit_config, inputs) -> [Test]
Given a configuration object and a list of input specifiers, find all the
tests to execute.
"""
# Expand '@...' form in inputs.
actual_inputs = []
for input in inputs:
if os.path.exists(input) or not input.startswith('@'):
actual_inputs.append(input)
else:
f = open(input[1:])
try:
for ln in f:
ln = ln.strip()
if ln:
actual_inputs.append(ln)
finally:
f.close()
# Load the tests from the inputs.
tests = []
test_suite_cache = {}
local_config_cache = {}
for input in actual_inputs:
prev = len(tests)
tests.extend(getTests(input, lit_config,
test_suite_cache, local_config_cache)[1])
if prev == len(tests):
lit_config.warning('input %r contained no tests' % input)
# If there were any errors during test discovery, exit now.
if lit_config.numErrors:
print >>sys.stderr, '%d errors, exiting.' % lit_config.numErrors
sys.exit(2)
return tests
def load_test_suite(inputs):
import platform
import unittest
from lit.LitTestCase import LitTestCase
# Create the global config object.
litConfig = LitConfig.LitConfig(progname = 'lit',
path = [],
quiet = False,
useValgrind = False,
valgrindLeakCheck = False,
valgrindArgs = [],
noExecute = False,
ignoreStdErr = False,
debug = False,
isWindows = (platform.system()=='Windows'),
params = {})
tests = find_tests_for_inputs(litConfig, inputs)
# Return a unittest test suite which just runs the tests in order.
return unittest.TestSuite([LitTestCase(test, litConfig) for test in tests])
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