KAFKA-18163: Move VerificationGuardTest to storage module (apache#18058)

Reviewers: Justine Olshan <[email protected]>

storage/src/test/java/org/apache/kafka/storage/internals/log/VerificationGuardTest.java

@@ -0,0 +1,53 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.kafka.storage.internals.log;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+public class VerificationGuardTest {
+
+    @Test
+    public void testEqualsAndHashCode() {
+        VerificationGuard verificationGuard1 = new VerificationGuard();
+        VerificationGuard verificationGuard2 = new VerificationGuard();
+
+        assertNotEquals(verificationGuard1, verificationGuard2);
+        assertNotEquals(VerificationGuard.SENTINEL, verificationGuard1);
+        assertEquals(VerificationGuard.SENTINEL, VerificationGuard.SENTINEL);
+
+        assertNotEquals(verificationGuard1.hashCode(), verificationGuard2.hashCode());
+        assertNotEquals(VerificationGuard.SENTINEL.hashCode(), verificationGuard1.hashCode());
+        assertEquals(VerificationGuard.SENTINEL.hashCode(), VerificationGuard.SENTINEL.hashCode());
+    }
+
+    @Test
+    public void testVerify() {
+        VerificationGuard verificationGuard1 = new VerificationGuard();
+        VerificationGuard verificationGuard2 = new VerificationGuard();
+
+        assertFalse(verificationGuard1.verify(verificationGuard2));
+        assertFalse(verificationGuard1.verify(VerificationGuard.SENTINEL));
+        assertFalse(VerificationGuard.SENTINEL.verify(verificationGuard1));
+        assertFalse(VerificationGuard.SENTINEL.verify(VerificationGuard.SENTINEL));
+        assertTrue(verificationGuard1.verify(verificationGuard1));
+    }
+}