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ImmutableJsonIntTest.java
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ImmutableJsonIntTest.java
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/*
* Copyright (c) 2017 Contributors to the Eclipse Foundation
*
* See the NOTICE file(s) distributed with this work for additional
* information regarding copyright ownership.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0
*
* SPDX-License-Identifier: EPL-2.0
*/
package org.eclipse.ditto.json;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
import static org.mutabilitydetector.unittesting.MutabilityAssert.assertInstancesOf;
import static org.mutabilitydetector.unittesting.MutabilityMatchers.areImmutable;
import java.util.Arrays;
import java.util.Collection;
import org.junit.Before;
import org.junit.Test;
import org.junit.experimental.runners.Enclosed;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import nl.jqno.equalsverifier.EqualsVerifier;
/**
* Unit test for {@link org.eclipse.ditto.json.ImmutableJsonInt}.
*/
@RunWith(Enclosed.class)
public final class ImmutableJsonIntTest {
@RunWith(Parameterized.class)
public static class ParameterizedTests {
@Parameterized.Parameters(name = "{0}")
public static Collection<Integer> intValues() {
return Arrays.asList(Integer.MIN_VALUE, Integer.MAX_VALUE, 0, 1337);
}
@Parameterized.Parameter
public int intValue;
private ImmutableJsonInt underTest;
@Before
public void setUp() {
underTest = ImmutableJsonInt.of(intValue);
}
@Test
public void assertImmutability() {
assertInstancesOf(ImmutableJsonInt.class, areImmutable());
}
@Test
public void testHashCodeAndEquals() {
final Integer red = intValue / 2;
final Integer black = red + 1;
EqualsVerifier.forClass(ImmutableJsonInt.class)
.withRedefinedSuperclass()
.usingGetClass()
.withNonnullFields("value")
.withPrefabValues(Number.class, red, black)
.verify();
}
@Test
public void jsonIntEqualsJsonLongIfSameValue() {
final ImmutableJsonLong longValue = ImmutableJsonLong.of(intValue);
assertThat(underTest).isEqualTo(longValue);
}
@Test
public void jsonIntHasSameHashCodeAsJsonLongIfSameValue() {
final ImmutableJsonLong longValue = ImmutableJsonLong.of(intValue);
assertThat(underTest.hashCode()).hasSameHashCodeAs(longValue.hashCode());
}
@Test
public void jsonIntEqualsJsonDoubleIfSameValue() {
final ImmutableJsonDouble doubleValue = ImmutableJsonDouble.of(intValue);
assertThat(underTest).isEqualTo(doubleValue);
}
@Test
public void jsonIntHasSameHashCodeAsJsonDoubleIfSameValue() {
final ImmutableJsonDouble doubleValue = ImmutableJsonDouble.of(intValue);
assertThat(underTest.hashCode()).hasSameHashCodeAs(doubleValue.hashCode());
}
@Test
public void getValueReturnsExpected() {
assertThat(underTest.getValue()).isEqualTo(intValue);
}
@Test
public void asIntReturnsExpected() {
assertThat(underTest.asInt()).isEqualTo(intValue);
}
@Test
public void asLongReturnsExpected() {
assertThat(underTest.asLong()).isEqualTo(intValue);
}
@Test
public void asDoubleReturnsExpected() {
assertThat(underTest.asDouble()).isEqualTo(intValue);
}
@Test
public void toStringReturnsExpected() {
assertThat(underTest.toString()).hasToString(String.valueOf(intValue));
}
@Test
public void isNotNull() {
assertThat(underTest.isNull()).isFalse();
}
@Test
public void isNotBoolean() {
assertThat(underTest.isBoolean()).isFalse();
}
@Test
public void isNumber() {
assertThat(underTest.isNumber()).isTrue();
}
@Test
public void isInt() {
assertThat(underTest.isInt()).isTrue();
}
@Test
public void isLong() {
assertThat(underTest.isLong()).isTrue();
}
@Test
public void isDouble() {
assertThat(underTest.isDouble()).isTrue();
}
@Test
public void isNotString() {
assertThat(underTest.isString()).isFalse();
}
@Test
public void isNotObject() {
assertThat(underTest.isObject()).isFalse();
}
@Test
public void isNotArray() {
assertThat(underTest.isArray()).isFalse();
}
@Test
public void tryToGetAsBoolean() {
assertThatExceptionOfType(UnsupportedOperationException.class)
.isThrownBy(() -> underTest.asBoolean())
.withMessage("This JSON value is not a boolean: %s", underTest)
.withNoCause();
}
@Test
public void tryToGetAsString() {
assertThatExceptionOfType(UnsupportedOperationException.class)
.isThrownBy(() -> underTest.asString())
.withMessage("This JSON value is not a string: %s", underTest)
.withNoCause();
}
@Test
public void tryToGetAsObject() {
assertThatExceptionOfType(UnsupportedOperationException.class)
.isThrownBy(() -> underTest.asObject())
.withMessage("This JSON value is not an object: %s", underTest)
.withNoCause();
}
@Test
public void tryToGetAsArray() {
assertThatExceptionOfType(UnsupportedOperationException.class)
.isThrownBy(() -> underTest.asArray())
.withMessage("This JSON value is not an array: %s", underTest)
.withNoCause();
}
}
}