Update MemcachedTest.php

Author: RobiNN1

tests/Dashboards/MemcachedTest.php

@@ -127,6 +127,10 @@ public static function commandDataProvider(): Iterator {
         yield 'test appended value' => ['VALUE pu-test-rc-add 0 6\r\ntestaa\r\nEND', 'get pu-test-rc-add'];
         yield 'test prepend' => ['STORED', 'prepend pu-test-rc-add 0 0 2\r\npp'];
         yield 'test prepended value' => ['VALUE pu-test-rc-add 0 8\r\npptestaa\r\nEND', 'get pu-test-rc-add'];
+        yield 'test cas set' => ['STORED', 'set pu-test-rc-cas 0 0 5\r\nvalue'];
+        yield 'test cas fail (badval)' => ['EXISTS', 'cas pu-test-rc-cas 0 0 6 999\r\nvalue2'];
+        yield 'test cas unchanged value' => ['VALUE pu-test-rc-cas 0 5\r\nvalue\r\nEND', 'get pu-test-rc-cas'];
+        yield 'test cas miss' => ['NOT_FOUND', 'cas pu-test-rc-cas-miss 0 0 5 123\r\nvalue'];
         yield 'test gat' => ['VALUE pu-test-rc-add 0 8\r\npptestaa\r\nEND', 'gat 700 pu-test-rc-add'];
         yield 'test touch' => ['TOUCHED', 'touch pu-test-rc-add 0'];
         yield 'test set int' => ['STORED', 'set pu-test-rc-int 0 0 1\r\n1'];