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import os
from xml.sax.saxutils import quoteattr
from json import JSONEncoder
from lit.BooleanExpression import BooleanExpression
# Test result codes.
class ResultCode(object):
"""Test result codes."""
# We override __new__ and __getnewargs__ to ensure that pickling still
# provides unique ResultCode objects in any particular instance.
_instances = {}
def __new__(cls, name, isFailure):
res = cls._instances.get(name)
if res is None:
cls._instances[name] = res = super(ResultCode, cls).__new__(cls)
return res
def __getnewargs__(self):
return (self.name, self.isFailure)
def __init__(self, name, isFailure):
self.name = name
self.isFailure = isFailure
def __repr__(self):
return '%s%r' % (self.__class__.__name__,
(self.name, self.isFailure))
PASS = ResultCode('PASS', False)
FLAKYPASS = ResultCode('FLAKYPASS', False)
XFAIL = ResultCode('XFAIL', False)
FAIL = ResultCode('FAIL', True)
XPASS = ResultCode('XPASS', False)
UNRESOLVED = ResultCode('UNRESOLVED', True)
UNSUPPORTED = ResultCode('UNSUPPORTED', False)
TIMEOUT = ResultCode('TIMEOUT', True)
# Test metric values.
class MetricValue(object):
def format(self):
"""
format() -> str
Convert this metric to a string suitable for displaying as part of the
console output.
"""
raise RuntimeError("abstract method")
def todata(self):
"""
todata() -> json-serializable data
Convert this metric to content suitable for serializing in the JSON test
output.
"""
raise RuntimeError("abstract method")
class IntMetricValue(MetricValue):
def __init__(self, value):
self.value = value
def format(self):
return str(self.value)
def todata(self):
return self.value
class RealMetricValue(MetricValue):
def __init__(self, value):
self.value = value
def format(self):
return '%.4f' % self.value
def todata(self):
return self.value
class JSONMetricValue(MetricValue):
"""
JSONMetricValue is used for types that are representable in the output
but that are otherwise uninterpreted.
"""
def __init__(self, value):
# Ensure the value is a serializable by trying to encode it.
# WARNING: The value may change before it is encoded again, and may
# not be encodable after the change.
try:
e = JSONEncoder()
e.encode(value)
except TypeError:
raise
self.value = value
def format(self):
e = JSONEncoder(indent=2, sort_keys=True)
return e.encode(self.value)
def todata(self):
return self.value
def toMetricValue(value):
if isinstance(value, MetricValue):
return value
elif isinstance(value, int):
return IntMetricValue(value)
elif isinstance(value, float):
return RealMetricValue(value)
else:
# 'long' is only present in python2
try:
if isinstance(value, long):
return IntMetricValue(value)
except NameError:
pass
# Try to create a JSONMetricValue and let the constructor throw
# if value is not a valid type.
return JSONMetricValue(value)
# Test results.
class Result(object):
"""Wrapper for the results of executing an individual test."""
def __init__(self, code, output='', elapsed=None):
# The result code.
self.code = code
# The test output.
self.output = output
# The wall timing to execute the test, if timing.
self.elapsed = elapsed
# The metrics reported by this test.
self.metrics = {}
# The micro-test results reported by this test.
self.microResults = {}
def addMetric(self, name, value):
"""
addMetric(name, value)
Attach a test metric to the test result, with the given name and list of
values. It is an error to attempt to attach the metrics with the same
name multiple times.
Each value must be an instance of a MetricValue subclass.
"""
if name in self.metrics:
raise ValueError("result already includes metrics for %r" % (
name,))
if not isinstance(value, MetricValue):
raise TypeError("unexpected metric value: %r" % (value,))
self.metrics[name] = value
def addMicroResult(self, name, microResult):
"""
addMicroResult(microResult)
Attach a micro-test result to the test result, with the given name and
result. It is an error to attempt to attach a micro-test with the
same name multiple times.
Each micro-test result must be an instance of the Result class.
"""
if name in self.microResults:
raise ValueError("Result already includes microResult for %r" % (
name,))
if not isinstance(microResult, Result):
raise TypeError("unexpected MicroResult value %r" % (microResult,))
self.microResults[name] = microResult
# Test classes.
class TestSuite:
"""TestSuite - Information on a group of tests.
A test suite groups together a set of logically related tests.
"""
def __init__(self, name, source_root, exec_root, config):
self.name = name
self.source_root = source_root
self.exec_root = exec_root
# The test suite configuration.
self.config = config
def getSourcePath(self, components):
return os.path.join(self.source_root, *components)
def getExecPath(self, components):
return os.path.join(self.exec_root, *components)
class Test:
"""Test - Information on a single test instance."""
def __init__(self, suite, path_in_suite, config, file_path = None):
self.suite = suite
self.path_in_suite = path_in_suite
self.config = config
self.file_path = file_path
# A list of conditions under which this test is expected to fail.
# Each condition is a boolean expression of features and target
# triple parts. These can optionally be provided by test format
# handlers, and will be honored when the test result is supplied.
self.xfails = []
# A list of conditions that must be satisfied before running the test.
# Each condition is a boolean expression of features. All of them
# must be True for the test to run.
# FIXME should target triple parts count here too?
self.requires = []
# A list of conditions that prevent execution of the test.
# Each condition is a boolean expression of features and target
# triple parts. All of them must be False for the test to run.
self.unsupported = []
# The test result, once complete.
self.result = None
def setResult(self, result):
assert self.result is None, "result already set"
assert isinstance(result, Result), "unexpected result type"
self.result = result
def isFailure(self):
assert self.result
return self.result.code.isFailure
def getFullName(self):
return self.suite.config.name + ' :: ' + '/'.join(self.path_in_suite)
def getFilePath(self):
if self.file_path:
return self.file_path
return self.getSourcePath()
def getSourcePath(self):
return self.suite.getSourcePath(self.path_in_suite)
def getExecPath(self):
return self.suite.getExecPath(self.path_in_suite)
def isExpectedToFail(self):
"""
isExpectedToFail() -> bool
Check whether this test is expected to fail in the current
configuration. This check relies on the test xfails property which by
some test formats may not be computed until the test has first been
executed.
Throws ValueError if an XFAIL line has a syntax error.
"""
features = self.config.available_features
triple = getattr(self.suite.config, 'target_triple', "")
# Check if any of the xfails match an available feature or the target.
for item in self.xfails:
# If this is the wildcard, it always fails.
if item == '*':
return True
# If this is a True expression of features and target triple parts,
# it fails.
try:
if BooleanExpression.evaluate(item, features, triple):
return True
except ValueError as e:
raise ValueError('Error in XFAIL list:\n%s' % str(e))
return False
def isWithinFeatureLimits(self):
"""
isWithinFeatureLimits() -> bool
A test is within the feature limits set by run_only_tests if
1. the test's requirements ARE satisfied by the available features
2. the test's requirements ARE NOT satisfied after the limiting
features are removed from the available features
Throws ValueError if a REQUIRES line has a syntax error.
"""
if not self.config.limit_to_features:
return True # No limits. Run it.
# Check the requirements as-is (#1)
if self.getMissingRequiredFeatures():
return False
# Check the requirements after removing the limiting features (#2)
featuresMinusLimits = [f for f in self.config.available_features
if not f in self.config.limit_to_features]
if not self.getMissingRequiredFeaturesFromList(featuresMinusLimits):
return False
return True
def getMissingRequiredFeaturesFromList(self, features):
try:
return [item for item in self.requires
if not BooleanExpression.evaluate(item, features)]
except ValueError as e:
raise ValueError('Error in REQUIRES list:\n%s' % str(e))
def getMissingRequiredFeatures(self):
"""
getMissingRequiredFeatures() -> list of strings
Returns a list of features from REQUIRES that are not satisfied."
Throws ValueError if a REQUIRES line has a syntax error.
"""
features = self.config.available_features
return self.getMissingRequiredFeaturesFromList(features)
def getUnsupportedFeatures(self):
"""
getUnsupportedFeatures() -> list of strings
Returns a list of features from UNSUPPORTED that are present
in the test configuration's features or target triple.
Throws ValueError if an UNSUPPORTED line has a syntax error.
"""
features = self.config.available_features
triple = getattr(self.suite.config, 'target_triple', "")
try:
return [item for item in self.unsupported
if BooleanExpression.evaluate(item, features, triple)]
except ValueError as e:
raise ValueError('Error in UNSUPPORTED list:\n%s' % str(e))
def isEarlyTest(self):
"""
isEarlyTest() -> bool
Check whether this test should be executed early in a particular run.
This can be used for test suites with long running tests to maximize
parallelism or where it is desirable to surface their failures early.
"""
return self.suite.config.is_early
def writeJUnitXML(self, fil):
"""Write the test's report xml representation to a file handle."""
test_name = quoteattr(self.path_in_suite[-1])
test_path = self.path_in_suite[:-1]
safe_test_path = [x.replace(".","_") for x in test_path]
safe_name = self.suite.name.replace(".","-")
if safe_test_path:
class_name = safe_name + "." + "/".join(safe_test_path)
else:
class_name = safe_name + "." + safe_name
class_name = quoteattr(class_name)
testcase_template = '<testcase classname={class_name} name={test_name} time="{time:.2f}"'
elapsed_time = self.result.elapsed if self.result.elapsed is not None else 0.0
testcase_xml = testcase_template.format(class_name=class_name, test_name=test_name, time=elapsed_time)
fil.write(testcase_xml)
if self.isFailure():
fil.write(">\n\t<failure ><![CDATA[")
# In Python2, 'str' and 'unicode' are distinct types, but in Python3, the type 'unicode' does not exist
# and instead 'bytes' is distinct
# in Python3, there's no unicode
if isinstance(self.result.output, str):
encoded_output = self.result.output
elif isinstance(self.result.output, bytes):
encoded_output = self.result.output.decode("utf-8", 'ignore')
else:
encoded_output = self.result.output.encode("utf-8", 'ignore')
# In the unlikely case that the output contains the CDATA terminator
# we wrap it by creating a new CDATA block
fil.write(encoded_output.replace("]]>", "]]]]><![CDATA[>"))
fil.write("]]></failure>\n</testcase>")
elif self.result.code == UNSUPPORTED:
unsupported_features = self.getMissingRequiredFeatures()
if unsupported_features:
skip_message = "Skipping because of: " + ", ".join(unsupported_features)
else:
skip_message = "Skipping because of configuration."
fil.write(">\n\t<skipped message={} />\n</testcase>\n".format(quoteattr(skip_message)))
else:
fil.write("/>")
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