+ $this->assertEquals( 1, $this->cache->get( $key1 ), "Key still live" );
+
+ $now = microtime( true ); // real time
+ $ok = $this->cache->setMulti( [ $key1 => 1, $key2 => 2, $key3 => 3 ] );
+ $this->assertTrue( $ok, "setMulti() succeeded" );
+
+ $ok = $this->cache->changeTTLMulti( [ $key1, $key2, $key3 ], $now + 86400 );
+ $this->assertTrue( $ok, "Expiry set for all keys" );
+ $this->assertEquals( 1, $this->cache->get( $key1 ), "Key still live" );