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/*
* 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<String, String> map = new MockIMap<>();
@Test
void set_whenValueIsNull_KeyValuePairIsRemoved() {
DistributedReference<String> stringDistributedReference = new DistributedReference<>(map);
stringDistributedReference.set("value");
assertThat(stringDistributedReference.get()).isEqualTo("value");
stringDistributedReference.set(null);
assertThat(stringDistributedReference.get()).isNull();
}
@Test
void get_returnsExpectedValue() {
DistributedReference<String> stringDistributedReference = new DistributedReference<>(map);
stringDistributedReference.set("value");
assertThat(stringDistributedReference.get()).isEqualTo("value");
}
@Test
void compareAndSet_whenExpectedValueMatches_newValueIsSet() {
DistributedReference<String> 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<String> 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<String> stringDistributedReference = new DistributedReference<>(map);
boolean result = stringDistributedReference.compareAndSet(null, "newValue");
assertThat(result).isTrue();
assertThat(stringDistributedReference.get()).isEqualTo("newValue");
}
@Test
void compareAndSet_whenExpectedValueDoesNotMatchNull_newValueIsNotSet() {
DistributedReference<String> stringDistributedReference = new DistributedReference<>(map);
boolean result = stringDistributedReference.compareAndSet("oldValue", "newValue");
assertThat(result).isFalse();
assertThat(stringDistributedReference.get()).isNull();
}
@Test
void compareAndSet_whenExpectedValueDoesNotMatch_previousValueIsKept() {
DistributedReference<String> stringDistributedReference = new DistributedReference<>(map);
stringDistributedReference.set("oldValue");
boolean result = stringDistributedReference.compareAndSet("value", "newValue");
assertThat(result).isFalse();
assertThat(stringDistributedReference.get()).isEqualTo("oldValue");
}
}
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