Added Unittests for cache

fixed Lock & Cache bugs

src/Core/Cache/ArrayCache.php

@@ -51,7 +51,7 @@ class ArrayCache extends AbstractCacheDriver implements IMemoryCacheDriver
 	/**
 	 * (@inheritdoc)
 	 */
-	public function clear()
+	public function clear($outdated = true)
 	{
 		$this->cachedData = [];
 		return true;

src/Core/Cache/DatabaseCacheDriver.php

@@ -37,7 +37,7 @@ class DatabaseCacheDriver extends AbstractCacheDriver implements ICacheDriver
 	{
 		$fields = [
 			'v'       => serialize($value),
-			'expires' => DateTimeFormat::utc('now + ' . $ttl . ' seconds'),
+			'expires' => DateTimeFormat::utc('now + ' . $ttl . 'seconds'),
 			'updated' => DateTimeFormat::utcNow()
 		];
 
@@ -49,8 +49,12 @@ class DatabaseCacheDriver extends AbstractCacheDriver implements ICacheDriver
 		return dba::delete('cache', ['k' => $key]);
 	}
 
-	public function clear()
+	public function clear($outdated = true)
 	{
-		return dba::delete('cache', ['`expires` < NOW()']);
+		if ($outdated) {
+			return dba::delete('cache', ['`expires` < NOW()']);
+		} else {
+			return dba::delete('cache', ['`k` IS NOT NULL ']);
+		}
 	}
 }

src/Core/Cache/ICacheDriver.php

@@ -42,8 +42,9 @@ interface ICacheDriver
 
 	/**
 	 * Remove outdated data from the cache
+	 * @param  boolean $outdated just remove outdated values
 	 *
 	 * @return bool
 	 */
-	public function clear();
+	public function clear($outdated = true);
 }

src/Core/Cache/MemcacheCacheDriver.php

@@ -96,9 +96,13 @@ class MemcacheCacheDriver extends AbstractCacheDriver implements IMemoryCacheDri
 	/**
 	 * (@inheritdoc)
 	 */
-	public function clear()
+	public function clear($outdated = true)
 	{
-		return $this->memcache->flush();
+		if ($outdated) {
+			return true;
+		} else {
+			return $this->memcache->flush();
+		}
 	}
 
 	/**

src/Core/Cache/MemcachedCacheDriver.php

@@ -58,7 +58,7 @@ class MemcachedCacheDriver extends AbstractCacheDriver implements IMemoryCacheDr
 			return $this->memcached->set(
 				$cachekey,
 				$value,
-				time() + $ttl
+				$ttl
 			);
 		} else {
 			return $this->memcached->set(
@@ -75,9 +75,13 @@ class MemcachedCacheDriver extends AbstractCacheDriver implements IMemoryCacheDr
 		return $this->memcached->delete($cachekey);
 	}
 
-	public function clear()
+	public function clear($outdated = true)
 	{
-		return $this->memcached->flush();
+		if ($outdated) {
+			return true;
+		} else {
+			return $this->memcached->flush();
+		}
 	}
 
 	/**

src/Core/Cache/RedisCacheDriver.php

@@ -61,7 +61,7 @@ class RedisCacheDriver extends AbstractCacheDriver implements IMemoryCacheDriver
 		if ($ttl > 0) {
 			return $this->redis->setex(
 				$cachekey,
-				time() + $ttl,
+				$ttl,
 				$cached
 			);
 		} else {
@@ -78,12 +78,15 @@ class RedisCacheDriver extends AbstractCacheDriver implements IMemoryCacheDriver
 		return ($this->redis->delete($cachekey) > 0);
 	}
 
-	public function clear()
+	public function clear($outdated = true)
 	{
-		return $this->redis->flushAll();
+		if ($outdated) {
+			return true;
+		} else {
+			return $this->redis->flushAll();
+		}
 	}
 
-
 	/**
 	 * (@inheritdoc)
 	 */
@@ -92,7 +95,7 @@ class RedisCacheDriver extends AbstractCacheDriver implements IMemoryCacheDriver
 		$cachekey = $this->getCacheKey($key);
 		$cached = json_encode($value);
 
-		return $this->redis->setnx($cachekey, $value);
+		return $this->redis->setnx($cachekey, $cached);
 	}
 
 	/**