def testNewVersionExistsWithStaleCache(self):
def MockIsCacheStale(cache):
return True
def MockUpdateCache(cache):
cache['last_checked_version'] = '1.3.0'
_, cache_file = tempfile.mkstemp()
try:
with open(cache_file, 'w') as f:
f.write(
'{ "last_checked_version": "1.2.0", "last_check": 3000.0,'
' "current_version": "1.2.0"}')
vc = version_checker.VersionChecker(cache_path=cache_file,
current_version='1.2.0')
vc._IsCacheStale = MockIsCacheStale
vc._UpdateCache = MockUpdateCache
self.assertTrue(vc._NewVersionExists())
self.assertEqual(vc._ReadCache()['last_checked_version'],
'1.3.0')
def MockUpdateCache2(cache):
cache['last_checked_version'] = '1.2.0'
vc._UpdateCache = MockUpdateCache2
self.assertFalse(vc._NewVersionExists())
self.assertEqual(vc._ReadCache()['last_checked_version'],
'1.2.0')
finally:
os.remove(cache_file)
def testIsCacheStaleWithMalformedCache(self):
vc = version_checker.VersionChecker(cache_ttl_sec=20,
current_version='1.2.0')
malformed_caches = ({
'last_checked_version': '1.2',
'last_check': 3000,
'current_version': '1.2.0'
}, {
'last_checked_version': '1.2',
'current_version': '1.2.0'
}, {
'last_checked_version': '1.2.x',
'last_check': 3000,
'current_version': '1.2.0'
})
for cache in malformed_caches:
self.assertTrue(vc._IsCacheStale(cache, current_time=1))
self.assertTrue(vc._IsCacheStale(cache, current_time=2000))
self.assertTrue(vc._IsCacheStale(cache, current_time=2999))
self.assertTrue(vc._IsCacheStale(cache, current_time=3000))
self.assertTrue(vc._IsCacheStale(cache, current_time=3005))
self.assertTrue(vc._IsCacheStale(cache, current_time=3010))
self.assertTrue(vc._IsCacheStale(cache, current_time=3019))
self.assertTrue(vc._IsCacheStale(cache, current_time=3020))
self.assertTrue(vc._IsCacheStale(cache, current_time=3021))
self.assertTrue(vc._IsCacheStale(cache, current_time=4000))
self.assertTrue(vc._IsCacheStale(cache, current_time=398457398))
def testIsCacheStale(self):
vc = version_checker.VersionChecker(cache_ttl_sec=20,
current_version='1.2.0')
cache = {
'last_checked_version': '1.2',
'last_check': 3000.0,
'current_version': '1.2.0'
}
self.assertTrue(vc._IsCacheStale(cache, current_time=1))
self.assertTrue(vc._IsCacheStale(cache, current_time=2000))
self.assertTrue(vc._IsCacheStale(cache, current_time=2999))
self.assertFalse(vc._IsCacheStale(cache, current_time=3000))
self.assertFalse(vc._IsCacheStale(cache, current_time=3005))
self.assertFalse(vc._IsCacheStale(cache, current_time=3010))
self.assertFalse(vc._IsCacheStale(cache, current_time=3019))
self.assertTrue(vc._IsCacheStale(cache, current_time=3020))
self.assertTrue(vc._IsCacheStale(cache, current_time=3021))
self.assertTrue(vc._IsCacheStale(cache, current_time=4000))
self.assertTrue(vc._IsCacheStale(cache, current_time=398457398))
self.assertTrue(vc._IsCacheStale({}, current_time=1))
self.assertTrue(vc._IsCacheStale({}, current_time=2000))
self.assertTrue(vc._IsCacheStale({}, current_time=2999))
self.assertTrue(vc._IsCacheStale({}, current_time=3000))
self.assertTrue(vc._IsCacheStale({}, current_time=3005))
self.assertTrue(vc._IsCacheStale({}, current_time=3010))
self.assertTrue(vc._IsCacheStale({}, current_time=3019))
self.assertTrue(vc._IsCacheStale({}, current_time=3020))
self.assertTrue(vc._IsCacheStale({}, current_time=3021))
self.assertTrue(vc._IsCacheStale({}, current_time=4000))
self.assertTrue(vc._IsCacheStale({}, current_time=398457398))
def testUpdateCache(self):
vc = version_checker.VersionChecker(cache_ttl_sec=20,
current_version='1.2.0')
cache = {}
vc._UpdateCache(cache,
http=VersionCheckerTests.MockHttp(),
current_time=123456.7)
self.assertEqual(cache['current_version'], '1.2.0')
self.assertEqual(cache['last_checked_version'], '1.3.0')
self.assertEqual(cache['last_check'], 123456.7)
def testWriteToCache(self):
_, cache_file = tempfile.mkstemp()
try:
cache = {'last_checked_version': '1.2', 'last_check': 3000}
vc = version_checker.VersionChecker(cache_path=cache_file)
vc._WriteToCache(cache)
with open(cache_file) as f:
self.assertEqual(json.load(f), cache)
finally:
os.remove(cache_file)
def testNewVersionExistsWithNonStaleCache(self):
def MockReadCache():
return {
'last_checked_version': '1.3.0',
'last_check': 3000.0,
'current_version': '1.2.0'
}
def MockIsCacheStale(cache):
return False
vc = version_checker.VersionChecker(current_version='1.2.0')
vc._ReadCache = MockReadCache
vc._IsCacheStale = MockIsCacheStale
self.assertTrue(vc._NewVersionExists())
vc = version_checker.VersionChecker(current_version='1.3.0')
vc._ReadCache = MockReadCache
vc._IsCacheStale = MockIsCacheStale
self.assertFalse(vc._NewVersionExists())
def testReadCacheWithGoodCache(self):
_, cache_file = tempfile.mkstemp()
try:
with open(cache_file, 'w') as f:
f.write(
'{ "last_checked_version": "1.2", "last_check": 3000.0 }')
vc = version_checker.VersionChecker(cache_path=cache_file)
self.assertEqual(vc._ReadCache(), {
'last_checked_version': '1.2',
'last_check': 3000
})
finally:
os.remove(cache_file)
def testReadCacheWithMalformedJson(self):
malformed_caches = (
'MALFORMED JSON',
'{ "last_checked_version": "1.2", "last_check": 3000.0, }',
'{ "last_checked_version": "1.2", "last_check": 3000.0 }}',
'{ "last_checked_version": "1.2", "last_check": 3000.0 }bad characters'
)
for malformed_cache in malformed_caches:
_, bad_cache_file = tempfile.mkstemp()
try:
with open(bad_cache_file, 'w') as f:
f.write(malformed_cache)
vc = version_checker.VersionChecker(cache_path=bad_cache_file)
self.assertEqual(vc._ReadCache(), {})
finally:
os.remove(bad_cache_file)
def testReadCacheWithNonExistentCacheFile(self):
vc = version_checker.VersionChecker(cache_path='non-existent-file')
self.assertEqual(vc._ReadCache(), {})