add comments to TestInvokeCleanCache in pkg\ddc\alluxio\cache_test.go.

Author: Srj

pkg/ddc/alluxio/cache_test.go

@@ -233,12 +233,7 @@ func TestPatchDatasetStatus(t *testing.T) {
 // TestInvokeCleanCache tests the behavior of the invokeCleanCache function in the AlluxioEngine.
 // It simulates different StatefulSet statuses using a fake client to verify whether the function
 // correctly determines if an error should be returned based on the readiness state of the replicas.
-// 
-// Test cases include:
-// - A component with no ready replicas (expected: no error)
-// - A component with ready replicas (expected: error)
-// - A non-existent component (expected: no error)
-// 
+//
 // Parameters:
 // - t (*testing.T): The testing context used to run assertions.
 //