/* * SonarQube * Copyright (C) 2009-2025 SonarSource SA * mailto:info AT sonarsource DOT com * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 3 of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this program; if not, write to the Free Software Foundation, * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ package org.sonar.process.cluster.hz; import com.hazelcast.map.IMap; import org.junit.jupiter.api.Test; import static org.assertj.core.api.Assertions.assertThat; class DistributedReferenceTest { private final IMap map = new MockIMap<>(); @Test void set_whenValueIsNull_KeyValuePairIsRemoved() { DistributedReference stringDistributedReference = new DistributedReference<>(map); stringDistributedReference.set("value"); assertThat(stringDistributedReference.get()).isEqualTo("value"); stringDistributedReference.set(null); assertThat(stringDistributedReference.get()).isNull(); } @Test void get_returnsExpectedValue() { DistributedReference stringDistributedReference = new DistributedReference<>(map); stringDistributedReference.set("value"); assertThat(stringDistributedReference.get()).isEqualTo("value"); } @Test void compareAndSet_whenExpectedValueMatches_newValueIsSet() { DistributedReference stringDistributedReference = new DistributedReference<>(map); stringDistributedReference.set("oldValue"); boolean result = stringDistributedReference.compareAndSet("oldValue", "newValue"); assertThat(result).isTrue(); assertThat(stringDistributedReference.get()).isEqualTo("newValue"); } @Test void compareAndSet_whenExpectedValueMatches_newValueIsSetEvenIfNull() { DistributedReference stringDistributedReference = new DistributedReference<>(map); stringDistributedReference.set("value"); boolean result = stringDistributedReference.compareAndSet("value", null); assertThat(result).isTrue(); assertThat(stringDistributedReference.get()).isNull(); } @Test void compareAndSet_whenExpectedValueMatchesNull_newValueIsSet() { DistributedReference stringDistributedReference = new DistributedReference<>(map); boolean result = stringDistributedReference.compareAndSet(null, "newValue"); assertThat(result).isTrue(); assertThat(stringDistributedReference.get()).isEqualTo("newValue"); } @Test void compareAndSet_whenExpectedValueDoesNotMatchNull_newValueIsNotSet() { DistributedReference stringDistributedReference = new DistributedReference<>(map); boolean result = stringDistributedReference.compareAndSet("oldValue", "newValue"); assertThat(result).isFalse(); assertThat(stringDistributedReference.get()).isNull(); } @Test void compareAndSet_whenExpectedValueDoesNotMatch_previousValueIsKept() { DistributedReference stringDistributedReference = new DistributedReference<>(map); stringDistributedReference.set("oldValue"); boolean result = stringDistributedReference.compareAndSet("value", "newValue"); assertThat(result).isFalse(); assertThat(stringDistributedReference.get()).isEqualTo("oldValue"); } }