3bc6a98c3e
- This is useful for testing with custom ABI libraries. - Patch by Michael van der Westhuizen. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@174997 91177308-0d34-0410-b5e6-96231b3b80d8
320 lines
12 KiB
Python
320 lines
12 KiB
Python
# -*- Python -*- vim: set syntax=python tabstop=4 expandtab cc=80:
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# Configuration file for the 'lit' test runner.
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import os
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import sys
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import platform
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import tempfile
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import signal
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import subprocess
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import errno
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import time
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import shlex
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# FIXME: For now, this is cribbed from lit.TestRunner, to avoid introducing a
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# dependency there. What we more ideally would like to do is lift the "xfail"
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# and "requires" handling to be a core lit framework feature.
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def isExpectedFail(test, xfails):
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# Check if any of the xfails match an available feature or the target.
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for item in xfails:
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# If this is the wildcard, it always fails.
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if item == '*':
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return True
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# If this is a part of any of the features, it fails.
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for feature in test.config.available_features:
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if item in feature:
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return True
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# If this is a part of the target triple, it fails.
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if item in test.suite.config.target_triple:
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return True
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return False
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class LibcxxTestFormat(lit.formats.FileBasedTest):
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"""
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Custom test format handler for use with the test format use by libc++.
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Tests fall into two categories:
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FOO.pass.cpp - Executable test which should compile, run, and exit with
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code 0.
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FOO.fail.cpp - Negative test case which is expected to fail compilation.
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"""
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def __init__(self, cxx_under_test, cpp_flags, ld_flags, exec_env):
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self.cxx_under_test = cxx_under_test
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self.cpp_flags = list(cpp_flags)
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self.ld_flags = list(ld_flags)
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self.exec_env = dict(exec_env)
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def execute_command(self, command, in_dir=None):
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kwargs = {
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'stdin' :subprocess.PIPE,
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'stdout':subprocess.PIPE,
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'stderr':subprocess.PIPE,
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}
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if in_dir:
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kwargs['cwd'] = in_dir
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p = subprocess.Popen(command, **kwargs)
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out,err = p.communicate()
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exitCode = p.wait()
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# Detect Ctrl-C in subprocess.
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if exitCode == -signal.SIGINT:
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raise KeyboardInterrupt
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return out, err, exitCode
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def execute(self, test, lit_config):
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while True:
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try:
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return self._execute(test, lit_config)
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except OSError, oe:
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if oe.errno != errno.ETXTBSY:
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raise
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time.sleep(0.1)
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def _execute(self, test, lit_config):
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# Extract test metadata from the test file.
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xfails = []
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requires = []
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with open(test.getSourcePath()) as f:
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for ln in f:
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if 'XFAIL:' in ln:
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items = ln[ln.index('XFAIL:') + 6:].split(',')
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xfails.extend([s.strip() for s in items])
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elif 'REQUIRES:' in ln:
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items = ln[ln.index('REQUIRES:') + 9:].split(',')
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requires.extend([s.strip() for s in items])
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elif not ln.startswith("//") and ln.strip():
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# Stop at the first non-empty line that is not a C++
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# comment.
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break
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# Check that we have the required features.
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#
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# FIXME: For now, this is cribbed from lit.TestRunner, to avoid
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# introducing a dependency there. What we more ideally would like to do
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# is lift the "xfail" and "requires" handling to be a core lit
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# framework feature.
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missing_required_features = [f for f in requires
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if f not in test.config.available_features]
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if missing_required_features:
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return (lit.Test.UNSUPPORTED,
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"Test requires the following features: %s" % (
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', '.join(missing_required_features),))
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# Determine if this test is an expected failure.
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isXFail = isExpectedFail(test, xfails)
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# Evaluate the test.
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result, report = self._evaluate_test(test, lit_config)
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# Convert the test result based on whether this is an expected failure.
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if isXFail:
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if result != lit.Test.FAIL:
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report += "\n\nTest was expected to FAIL, but did not.\n"
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result = lit.Test.XPASS
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else:
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result = lit.Test.XFAIL
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return result, report
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def _evaluate_test(self, test, lit_config):
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name = test.path_in_suite[-1]
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source_path = test.getSourcePath()
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source_dir = os.path.dirname(source_path)
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# Check what kind of test this is.
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assert name.endswith('.pass.cpp') or name.endswith('.fail.cpp')
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expected_compile_fail = name.endswith('.fail.cpp')
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# If this is a compile (failure) test, build it and check for failure.
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if expected_compile_fail:
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cmd = [self.cxx_under_test, '-c',
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'-o', '/dev/null', source_path] + self.cpp_flags
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out, err, exitCode = self.execute_command(cmd)
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if exitCode == 1:
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return lit.Test.PASS, ""
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else:
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report = """Command: %s\n""" % ' '.join(["'%s'" % a
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for a in cmd])
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report += """Exit Code: %d\n""" % exitCode
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if out:
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report += """Standard Output:\n--\n%s--""" % out
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if err:
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report += """Standard Error:\n--\n%s--""" % err
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report += "\n\nExpected compilation to fail!"
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return lit.Test.FAIL, report
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else:
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exec_file = tempfile.NamedTemporaryFile(suffix="exe", delete=False)
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exec_path = exec_file.name
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exec_file.close()
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try:
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compile_cmd = [self.cxx_under_test, '-o', exec_path,
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source_path] + self.cpp_flags + self.ld_flags
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cmd = compile_cmd
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out, err, exitCode = self.execute_command(cmd)
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if exitCode != 0:
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report = """Command: %s\n""" % ' '.join(["'%s'" % a
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for a in cmd])
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report += """Exit Code: %d\n""" % exitCode
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if out:
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report += """Standard Output:\n--\n%s--""" % out
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if err:
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report += """Standard Error:\n--\n%s--""" % err
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report += "\n\nCompilation failed unexpectedly!"
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return lit.Test.FAIL, report
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cmd = []
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if self.exec_env:
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cmd.append('env')
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cmd.extend('%s=%s' % (name, value)
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for name,value in self.exec_env.items())
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cmd.append(exec_path)
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if lit_config.useValgrind:
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cmd = lit_config.valgrindArgs + cmd
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out, err, exitCode = self.execute_command(cmd, source_dir)
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if exitCode != 0:
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report = """Compiled With: %s\n""" % \
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' '.join(["'%s'" % a for a in compile_cmd])
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report += """Command: %s\n""" % \
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' '.join(["'%s'" % a for a in cmd])
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report += """Exit Code: %d\n""" % exitCode
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if out:
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report += """Standard Output:\n--\n%s--""" % out
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if err:
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report += """Standard Error:\n--\n%s--""" % err
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report += "\n\nCompiled test failed unexpectedly!"
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return lit.Test.FAIL, report
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finally:
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try:
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os.remove(exec_path)
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except:
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pass
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return lit.Test.PASS, ""
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# name: The name of this test suite.
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config.name = 'libc++'
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# suffixes: A list of file extensions to treat as test files.
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config.suffixes = ['.cpp']
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# test_source_root: The root path where tests are located.
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config.test_source_root = os.path.dirname(__file__)
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# Gather various compiler parameters.
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cxx_under_test = lit.params.get('cxx_under_test', None)
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if cxx_under_test is None:
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cxx_under_test = getattr(config, 'cxx_under_test', None)
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# If no specific cxx_under_test was given, attempt to infer it as clang++.
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clangxx = lit.util.which('clang++', config.environment['PATH'])
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if clangxx is not None:
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cxx_under_test = clangxx
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lit.note("inferred cxx_under_test as: %r" % (cxx_under_test,))
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if cxx_under_test is None:
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lit.fatal('must specify user parameter cxx_under_test '
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'(e.g., --param=cxx_under_test=clang++)')
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libcxx_src_root = lit.params.get('libcxx_src_root', None)
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if libcxx_src_root is None:
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libcxx_src_root = getattr(config, 'libcxx_src_root', None)
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if libcxx_src_root is None:
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libcxx_src_root = os.path.dirname(config.test_source_root)
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libcxx_obj_root = lit.params.get('libcxx_obj_root', None)
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if libcxx_obj_root is None:
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libcxx_obj_root = getattr(config, 'libcxx_obj_root', None)
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if libcxx_obj_root is None:
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libcxx_obj_root = libcxx_src_root
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cxx_has_stdcxx0x_flag_str = lit.params.get('cxx_has_stdcxx0x_flag', None)
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if cxx_has_stdcxx0x_flag_str is not None:
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if cxx_has_stdcxx0x_flag_str.lower() in ('1', 'true'):
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cxx_has_stdcxx0x_flag = True
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elif cxx_has_stdcxx0x_flag_str.lower() in ('', '0', 'false'):
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cxx_has_stdcxx0x_flag = False
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else:
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lit.fatal('user parameter cxx_has_stdcxx0x_flag_str should be 0 or 1')
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else:
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cxx_has_stdcxx0x_flag = getattr(config, 'cxx_has_stdcxx0x_flag', True)
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# This test suite supports testing against either the system library or the
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# locally built one; the former mode is useful for testing ABI compatibility
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# between the current headers and a shipping dynamic library.
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use_system_lib_str = lit.params.get('use_system_lib', None)
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if use_system_lib_str is not None:
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if use_system_lib_str.lower() in ('1', 'true'):
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use_system_lib = True
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elif use_system_lib_str.lower() in ('', '0', 'false'):
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use_system_lib = False
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else:
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lit.fatal('user parameter use_system_lib should be 0 or 1')
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else:
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# Default to testing against the locally built libc++ library.
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use_system_lib = False
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lit.note("inferred use_system_lib as: %r" % (use_system_lib,))
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link_flags = []
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link_flags_str = lit.params.get('link_flags', None)
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if link_flags_str is None:
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link_flags_str = getattr(config, 'link_flags', None)
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if link_flags_str is None:
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if sys.platform == 'darwin':
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link_flags += ['-lSystem']
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elif sys.platform == 'linux2':
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link_flags += ['-lsupc++', '-lgcc_eh', '-lc', '-lm', '-lpthread',
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'-lrt', '-lgcc_s']
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else:
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lit.fatal("unrecognized system")
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lit.note("inferred link_flags as: %r" % (link_flags,))
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if not link_flags_str is None:
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link_flags += shlex.split(link_flags_str)
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# Configure extra compiler flags.
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include_paths = ['-I' + libcxx_src_root + '/include',
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'-I' + libcxx_src_root + '/test/support']
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library_paths = ['-L' + libcxx_obj_root + '/lib']
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compile_flags = []
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if cxx_has_stdcxx0x_flag:
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compile_flags += ['-std=c++0x']
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# Configure extra linker parameters.
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exec_env = {}
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if sys.platform == 'darwin':
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if not use_system_lib:
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exec_env['DYLD_LIBRARY_PATH'] = os.path.join(libcxx_obj_root, 'lib')
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elif sys.platform == 'linux2':
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if not use_system_lib:
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link_flags += ['-Wl,-R', libcxx_obj_root + '/lib']
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compile_flags += ['-D__STDC_FORMAT_MACROS', '-D__STDC_LIMIT_MACROS',
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'-D__STDC_CONSTANT_MACROS']
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else:
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lit.fatal("unrecognized system")
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config.test_format = LibcxxTestFormat(
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cxx_under_test,
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cpp_flags = ['-nostdinc++'] + compile_flags + include_paths,
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ld_flags = ['-nodefaultlibs'] + library_paths + ['-lc++'] + link_flags,
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exec_env = exec_env)
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# Get or infer the target triple.
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config.target_triple = lit.params.get('target_triple', None)
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# If no target triple was given, try to infer it from the compiler under test.
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if config.target_triple is None:
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config.target_triple = lit.util.capture(
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[cxx_under_test, '-dumpmachine']).strip()
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lit.note("inferred target_triple as: %r" % (config.target_triple,))
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# Write an "available feature" that combines the triple when use_system_lib is
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# enabled. This is so that we can easily write XFAIL markers for tests that are
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# known to fail with versions of libc++ as were shipped with a particular
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# triple.
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if use_system_lib:
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config.available_features.add('with_system_lib=%s' % (
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config.target_triple,))
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