pandemonium_engine/SCSCons/CacheDirTests.py

370 lines
13 KiB
Python

# MIT License
#
# Copyright The SCons Foundation
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
import os.path
import shutil
import sys
import unittest
import tempfile
import stat
from TestCmd import TestCmd
import SCons.CacheDir
built_it = None
class Action:
def __call__(self, targets, sources, env, **kw):
global built_it
if kw.get('execute', 1):
built_it = 1
return 0
def genstring(self, target, source, env):
return str(self)
def get_contents(self, target, source, env):
return bytearray('','utf-8')
class Builder:
def __init__(self, environment, action):
self.env = environment
self.action = action
self.overrides = {}
self.source_scanner = None
self.target_scanner = None
class Environment:
def __init__(self, cachedir):
self.cachedir = cachedir
def Override(self, overrides):
return self
def get_CacheDir(self):
return self.cachedir
class BaseTestCase(unittest.TestCase):
"""
Base fixtures common to our other unittest classes.
"""
def setUp(self):
self.test = TestCmd(workdir='')
import SCons.Node.FS
self.fs = SCons.Node.FS.FS()
self._CacheDir = SCons.CacheDir.CacheDir('cache')
def File(self, name, bsig=None, action=Action()):
node = self.fs.File(name)
node.builder_set(Builder(Environment(self._CacheDir), action))
if bsig:
node.cachesig = bsig
#node.binfo = node.BuildInfo(node)
#node.binfo.ninfo.bsig = bsig
return node
def tearDown(self):
os.remove(os.path.join(self._CacheDir.path, 'config'))
os.rmdir(self._CacheDir.path)
# Should that be shutil.rmtree?
class CacheDirTestCase(BaseTestCase):
"""
Test calling CacheDir code directly.
"""
def test_cachepath(self):
"""Test the cachepath() method"""
# Verify how the cachepath() method determines the name
# of the file in cache.
def my_collect(list, hash_format=None):
return list[0]
save_collect = SCons.Util.hash_collect
SCons.Util.hash_collect = my_collect
try:
name = 'a_fake_bsig'
f5 = self.File("cd.f5", name)
result = self._CacheDir.cachepath(f5)
len = self._CacheDir.config['prefix_len']
dirname = os.path.join('cache', name.upper()[:len])
filename = os.path.join(dirname, name)
assert result == (dirname, filename), result
finally:
SCons.Util.hash_collect = save_collect
class ExceptionTestCase(unittest.TestCase):
"""Test that the correct exceptions are thrown by CacheDir."""
# Don't inherit from BaseTestCase, we're by definition trying to
# break things so we really want a clean slate for each test.
def setUp(self):
self.tmpdir = tempfile.mkdtemp()
self._CacheDir = SCons.CacheDir.CacheDir(self.tmpdir)
def tearDown(self):
shutil.rmtree(self.tmpdir)
@unittest.skipIf(sys.platform.startswith("win"), "This fixture will not trigger an OSError on Windows")
def test_throws_correct_on_OSError(self):
"""Test that the correct error is thrown when cache directory cannot be created."""
privileged_dir = os.path.join(self.tmpdir, "privileged")
try:
os.mkdir(privileged_dir)
os.chmod(privileged_dir, stat.S_IREAD)
cd = SCons.CacheDir.CacheDir(os.path.join(privileged_dir, "cache"))
assert False, "Should have raised exception and did not"
except SCons.Errors.SConsEnvironmentError as e:
assert str(e) == "Failed to create cache directory {}".format(os.path.join(privileged_dir, "cache"))
finally:
os.chmod(privileged_dir, stat.S_IWRITE | stat.S_IEXEC | stat.S_IREAD)
shutil.rmtree(privileged_dir)
def test_throws_correct_when_failed_to_write_configfile(self):
class Unserializable:
"""A class which the JSON should not be able to serialize"""
def __init__(self, oldconfig):
self.something = 1 # Make the object unserializable
# Pretend to be the old config just enough
self.__dict__["prefix_len"] = oldconfig["prefix_len"]
def __getitem__(self, name, default=None):
if name == "prefix_len":
return self.__dict__["prefix_len"]
else:
return None
def __setitem__(self, name, value):
self.__dict__[name] = value
oldconfig = self._CacheDir.config
self._CacheDir.config = Unserializable(oldconfig)
# Remove the config file that got created on object creation
# so that _readconfig* will try to rewrite it
old_config = os.path.join(self._CacheDir.path, "config")
os.remove(old_config)
try:
self._CacheDir._readconfig(self._CacheDir.path)
assert False, "Should have raised exception and did not"
except SCons.Errors.SConsEnvironmentError as e:
assert str(e) == "Failed to write cache configuration for {}".format(self._CacheDir.path)
def test_raise_environment_error_on_invalid_json(self):
config_file = os.path.join(self._CacheDir.path, "config")
with open(config_file, "r") as cfg:
content = cfg.read()
# This will make JSON load raise a ValueError
content += "{}"
with open(config_file, "w") as cfg:
cfg.write(content)
try:
# Construct a new cache dir that will try to read the invalid config
new_cache_dir = SCons.CacheDir.CacheDir(self._CacheDir.path)
assert False, "Should have raised exception and did not"
except SCons.Errors.SConsEnvironmentError as e:
assert str(e) == "Failed to read cache configuration for {}".format(self._CacheDir.path)
class FileTestCase(BaseTestCase):
"""
Test calling CacheDir code through Node.FS.File interfaces.
"""
# These tests were originally in Nodes/FSTests.py and got moved
# when the CacheDir support was refactored into its own module.
# Look in the history for Node/FSTests.py if any of this needs
# to be re-examined.
def retrieve_succeed(self, target, source, env, execute=1):
self.retrieved.append(target)
return 0
def retrieve_fail(self, target, source, env, execute=1):
self.retrieved.append(target)
return 1
def push(self, target, source, env):
self.pushed.append(target)
return 0
def test_CacheRetrieve(self):
"""Test the CacheRetrieve() function"""
save_CacheRetrieve = SCons.CacheDir.CacheRetrieve
self.retrieved = []
f1 = self.File("cd.f1")
try:
SCons.CacheDir.CacheRetrieve = self.retrieve_succeed
self.retrieved = []
built_it = None
r = f1.retrieve_from_cache()
assert r == 1, r
assert self.retrieved == [f1], self.retrieved
assert built_it is None, built_it
SCons.CacheDir.CacheRetrieve = self.retrieve_fail
self.retrieved = []
built_it = None
r = f1.retrieve_from_cache()
assert not r, r
assert self.retrieved == [f1], self.retrieved
assert built_it is None, built_it
finally:
SCons.CacheDir.CacheRetrieve = save_CacheRetrieve
def test_CacheRetrieveSilent(self):
"""Test the CacheRetrieveSilent() function"""
save_CacheRetrieveSilent = SCons.CacheDir.CacheRetrieveSilent
SCons.CacheDir.cache_show = 1
f2 = self.File("cd.f2", 'f2_bsig')
try:
SCons.CacheDir.CacheRetrieveSilent = self.retrieve_succeed
self.retrieved = []
built_it = None
r = f2.retrieve_from_cache()
assert r == 1, r
assert self.retrieved == [f2], self.retrieved
assert built_it is None, built_it
SCons.CacheDir.CacheRetrieveSilent = self.retrieve_fail
self.retrieved = []
built_it = None
r = f2.retrieve_from_cache()
assert r is False, r
assert self.retrieved == [f2], self.retrieved
assert built_it is None, built_it
finally:
SCons.CacheDir.CacheRetrieveSilent = save_CacheRetrieveSilent
def test_CachePush(self):
"""Test the CachePush() function"""
save_CachePush = SCons.CacheDir.CachePush
SCons.CacheDir.CachePush = self.push
try:
self.pushed = []
cd_f3 = self.test.workpath("cd.f3")
f3 = self.File(cd_f3)
f3.push_to_cache()
assert self.pushed == [], self.pushed
self.test.write(cd_f3, "cd.f3\n")
f3.push_to_cache()
assert self.pushed == [f3], self.pushed
self.pushed = []
cd_f4 = self.test.workpath("cd.f4")
f4 = self.File(cd_f4)
f4.visited()
assert self.pushed == [], self.pushed
self.test.write(cd_f4, "cd.f4\n")
f4.clear()
f4.visited()
assert self.pushed == [], self.pushed
SCons.CacheDir.cache_force = 1
f4.clear()
f4.visited()
assert self.pushed == [f4], self.pushed
finally:
SCons.CacheDir.CachePush = save_CachePush
def test_warning(self):
"""Test raising a warning if we can't copy a file to cache."""
test = TestCmd(workdir='')
save_copy2 = shutil.copy2
def copy2(src, dst):
raise OSError
shutil.copy2 = copy2
save_mkdir = os.mkdir
def mkdir(dir, mode=0):
pass
os.mkdir = mkdir
old_warn_exceptions = SCons.Warnings.warningAsException(1)
SCons.Warnings.enableWarningClass(SCons.Warnings.CacheWriteErrorWarning)
try:
cd_f7 = self.test.workpath("cd.f7")
self.test.write(cd_f7, "cd.f7\n")
f7 = self.File(cd_f7, 'f7_bsig')
warn_caught = 0
try:
f7.push_to_cache()
except SCons.Errors.BuildError as e:
assert e.exc_info[0] == SCons.Warnings.CacheWriteErrorWarning
warn_caught = 1
assert warn_caught
finally:
shutil.copy2 = save_copy2
os.mkdir = save_mkdir
SCons.Warnings.warningAsException(old_warn_exceptions)
SCons.Warnings.suppressWarningClass(SCons.Warnings.CacheWriteErrorWarning)
def test_no_strfunction(self):
"""Test handling no strfunction() for an action."""
save_CacheRetrieveSilent = SCons.CacheDir.CacheRetrieveSilent
f8 = self.File("cd.f8", 'f8_bsig')
try:
SCons.CacheDir.CacheRetrieveSilent = self.retrieve_succeed
self.retrieved = []
built_it = None
r = f8.retrieve_from_cache()
assert r == 1, r
assert self.retrieved == [f8], self.retrieved
assert built_it is None, built_it
SCons.CacheDir.CacheRetrieveSilent = self.retrieve_fail
self.retrieved = []
built_it = None
r = f8.retrieve_from_cache()
assert r is False, r
assert self.retrieved == [f8], self.retrieved
assert built_it is None, built_it
finally:
SCons.CacheDir.CacheRetrieveSilent = save_CacheRetrieveSilent
if __name__ == "__main__":
unittest.main()
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# indent-tabs-mode:nil
# End:
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