Tests: fixed CacheStorage's sliding tests [Closing nette/nette#958]

These tests failed on Travis-ci.org accidentally. It's because sliding interval was so tight. I verified, that sliding functionality is working well in both cases (MemcachedStorage, FileStorage). The expiration of data is properly prolonged on every reading. But there is a potential weak place. Cache::completeDependencies() converts expiration time to relative amount of seconds. When user sets expiration at time() + 2, until Cache::completeDependencies() runs, time() value increase. So, expiration time is decreased by 1 second in consequence. I guess, this is a reason why tests failed on Travis (virtual server, time jitter, I/O rush). I hope, this feature needn't be fixed, Cache is not permanent data storage. And nobody complain.

Author: milo

tests/Caching/FileStorage.sliding.phpt

@@ -24,21 +24,22 @@ $cache = new Cache(new FileStorage(TEMP_DIR));
 
 // Writing cache...
 $cache->save($key, $value, array(
-Cache::EXPIRATION => time() + 2,
+Cache::EXPIRATION => time() + 3,
 Cache::SLIDING => TRUE,
 ));
 
 
-for($i = 0; $i < 3; $i++) {
+for ($i = 0; $i < 5; $i++) {
 // Sleeping 1 second
 sleep(1);
 clearstatcache();
+
 Assert::true( isset($cache[$key]), 'Is cached?' );
 
 }
 
 // Sleeping few seconds...
-sleep(3);
+sleep(5);
 clearstatcache();
 
 Assert::false( isset($cache[$key]), 'Is cached?' );

tests/Caching/Memcached.sliding.phpt

@@ -30,19 +30,20 @@ $cache = new Cache(new MemcachedStorage('localhost'));
 
 // Writing cache...
 $cache->save($key, $value, array(
-Cache::EXPIRATION => time() + 2,
+Cache::EXPIRATION => time() + 3,
 Cache::SLIDING => TRUE,
 ));
 
 
-for($i = 0; $i < 3; $i++) {
+for ($i = 0; $i < 5; $i++) {
 // Sleeping 1 second
 sleep(1);
+
 Assert::true( isset($cache[$key]), 'Is cached?' );
 
 }
 
 // Sleeping few seconds...
-sleep(4);
+sleep(5);
 
 Assert::false( isset($cache[$key]), 'Is cached?' );