def test_loaderException(self):
"""
Test that an exception raised from the loader does not break the
L{CachedFile}.
"""
counter = count()
def _loadMe(path, crashMe=False):
if crashMe:
raise Exception('It is an exception!')
return next(counter)
cf = CachedFile(self.testFile, _loadMe)
# Can we still load after the first attempt raises an exception?
self.assertRaises(Exception, cf.load, True)
self.assertEqual(cf.load(), 0)
# Cache should be valid now, so a broken loader shouldn't matter
self.assertEqual(cf.load(True), 0)
# A second broken load
cf.invalidate()
self.assertRaises(Exception, cf.load, True)
self.assertEqual(cf.load(), 1)
def test_loaderException(self):
"""
Test that an exception raised from the loader does not break the
L{CachedFile}.
"""
counter = count()
def _loadMe(path, crashMe=False):
if crashMe:
raise Exception('It is an exception!')
return next(counter)
cf = CachedFile(self.testFile, _loadMe)
# Can we still load after the first attempt raises an exception?
self.assertRaises(Exception, cf.load, True)
self.assertEqual(cf.load(), 0)
# Cache should be valid now, so a broken loader shouldn't matter
self.assertEqual(cf.load(True), 0)
# A second broken load
cf.invalidate()
self.assertRaises(Exception, cf.load, True)
self.assertEqual(cf.load(), 1)
class CachedFileTests(TestCase):
def setUp(self):
self.testFile = self.mktemp()
file(self.testFile, 'w').close()
counter = count()
self.cache = CachedFile(self.testFile, lambda path: next(counter))
def test_cache(self):
"""
Test that loading a file twice returns the cached version the second
time.
"""
o1 = self.cache.load()
o2 = self.cache.load()
self.assertEqual(o1, o2)
def test_cacheModifiedTime(self):
"""
Test that loading a cached file with a different mtime loads the file
again.
"""
mtime = getmtime(self.testFile)
o = self.cache.load()
# sanity check
self.assertEqual(o, 0)
utime(self.testFile, (mtime + 100, mtime + 100))
o = self.cache.load()
self.assertEqual(o, 1)
utime(self.testFile, (mtime, mtime))
o = self.cache.load()
self.assertEqual(o, 2)
def test_cacheInvalidate(self):
"""
Test that calling invalidate really invalidates the cache.
"""
self.assertEqual(self.cache.load(), 0)
self.cache.invalidate()
self.assertEqual(self.cache.load(), 1)
def test_loadArgs(self):
"""
Test that additional arguments are correctly passed through to the
loader.
"""
marker = object()
def _loadMe(path, otherArg, otherKwarg):
self.assertIdentical(otherArg, marker)
self.assertIdentical(otherKwarg, marker)
CachedFile(self.testFile, _loadMe).load(marker, otherKwarg=marker)
def test_loaderException(self):
"""
Test that an exception raised from the loader does not break the
L{CachedFile}.
"""
counter = count()
def _loadMe(path, crashMe=False):
if crashMe:
raise Exception('It is an exception!')
return next(counter)
cf = CachedFile(self.testFile, _loadMe)
# Can we still load after the first attempt raises an exception?
self.assertRaises(Exception, cf.load, True)
self.assertEqual(cf.load(), 0)
# Cache should be valid now, so a broken loader shouldn't matter
self.assertEqual(cf.load(True), 0)
# A second broken load
cf.invalidate()
self.assertRaises(Exception, cf.load, True)
self.assertEqual(cf.load(), 1)
class CachedFileTests(TestCase):
def setUp(self):
self.testFile = self.mktemp()
file(self.testFile, 'w').close()
counter = count()
self.cache = CachedFile(self.testFile, lambda path: next(counter))
def test_cache(self):
"""
Test that loading a file twice returns the cached version the second
time.
"""
o1 = self.cache.load()
o2 = self.cache.load()
self.assertEqual(o1, o2)
def test_cacheModifiedTime(self):
"""
Test that loading a cached file with a different mtime loads the file
again.
"""
mtime = getmtime(self.testFile)
o = self.cache.load()
# sanity check
self.assertEqual(o, 0)
utime(self.testFile, (mtime + 100, mtime + 100))
o = self.cache.load()
self.assertEqual(o, 1)
utime(self.testFile, (mtime, mtime))
o = self.cache.load()
self.assertEqual(o, 2)
def test_cacheInvalidate(self):
"""
Test that calling invalidate really invalidates the cache.
"""
self.assertEqual(self.cache.load(), 0)
self.cache.invalidate()
self.assertEqual(self.cache.load(), 1)
def test_loadArgs(self):
"""
Test that additional arguments are correctly passed through to the
loader.
"""
marker = object()
def _loadMe(path, otherArg, otherKwarg):
self.assertIdentical(otherArg, marker)
self.assertIdentical(otherKwarg, marker)
CachedFile(self.testFile, _loadMe).load(marker, otherKwarg=marker)
def test_loaderException(self):
"""
Test that an exception raised from the loader does not break the
L{CachedFile}.
"""
counter = count()
def _loadMe(path, crashMe=False):
if crashMe:
raise Exception('It is an exception!')
return next(counter)
cf = CachedFile(self.testFile, _loadMe)
# Can we still load after the first attempt raises an exception?
self.assertRaises(Exception, cf.load, True)
self.assertEqual(cf.load(), 0)
# Cache should be valid now, so a broken loader shouldn't matter
self.assertEqual(cf.load(True), 0)
# A second broken load
cf.invalidate()
self.assertRaises(Exception, cf.load, True)
self.assertEqual(cf.load(), 1)
