forked from plusone/plusone-commons
245 lines
11 KiB
Java
245 lines
11 KiB
Java
/*
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* Copyright 2024-2025 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package xyz.zhouxy.plusone.commons.util;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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import static org.junit.jupiter.api.Assertions.assertFalse;
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import static org.junit.jupiter.api.Assertions.assertInstanceOf;
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import static org.junit.jupiter.api.Assertions.assertNull;
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import static org.junit.jupiter.api.Assertions.assertSame;
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import static org.junit.jupiter.api.Assertions.assertThrows;
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import java.lang.reflect.Constructor;
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import java.util.Arrays;
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import org.junit.jupiter.api.Test;
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import org.junit.jupiter.params.ParameterizedTest;
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import org.junit.jupiter.params.provider.ValueSource;
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@SuppressWarnings("deprecation")
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public
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class EnumToolsTests {
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private enum MyEnum {
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VALUE_0,
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VALUE_1,
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VALUE_2,
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VALUE_3,
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}
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@ParameterizedTest
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@ValueSource(ints = { 0, 1, 2, 3 })
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void testCheckOrdinal_success(int ordinal) {
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assertEquals(ordinal, EnumTools.checkOrdinal(MyEnum.class, ordinal));
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}
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@ParameterizedTest
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@ValueSource(ints = { -1, 4 })
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void testCheckOrdinal_EnumConstantNotPresentException(int ordinal) {
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assertThrows(EnumConstantNotPresentException.class,
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() -> EnumTools.checkOrdinal(MyEnum.class, ordinal));
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}
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@Test
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void testCheckOrdinal_null() {
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assertThrows(NullPointerException.class,
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() -> EnumTools.checkOrdinal(MyEnum.class, null));
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assertThrows(NullPointerException.class,
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() -> EnumTools.checkOrdinal(null, 0));
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assertThrows(NullPointerException.class,
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() -> EnumTools.checkOrdinal(null, null));
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}
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@ParameterizedTest
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@ValueSource(ints = { 0, 1, 2, 3 })
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void testCheckOrdinalNullable_success(int ordinal) {
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assertEquals(ordinal, EnumTools.checkOrdinalNullable(MyEnum.class, ordinal));
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}
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@ParameterizedTest
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@ValueSource(ints = { -1, 4 })
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void testCheckOrdinalNullable_EnumConstantNotPresentException(int ordinal) {
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assertThrows(EnumConstantNotPresentException.class, () -> {
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EnumTools.checkOrdinalNullable(MyEnum.class, ordinal);
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});
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}
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@Test
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void testCheckOrdinalNullable_null() {
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assertNull(EnumTools.checkOrdinalNullable(MyEnum.class, null));
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assertThrows(NullPointerException.class, () -> {
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EnumTools.checkOrdinalNullable(null, 0);
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});
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assertThrows(NullPointerException.class, () -> {
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EnumTools.checkOrdinalNullable(null, null);
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});
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}
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@ParameterizedTest
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@ValueSource(ints = { 0, 1, 2, 3 })
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void testCheckOrdinalOrDefault_0To3(int ordinal) {
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assertEquals(ordinal, EnumTools.checkOrdinalOrDefault(MyEnum.class, ordinal));
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}
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@ParameterizedTest
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@ValueSource(ints = { -1, 4 })
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void testCheckOrdinalOrDefault_EnumConstantNotPresentException(int ordinal) {
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assertThrows(EnumConstantNotPresentException.class, () -> {
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EnumTools.checkOrdinalOrDefault(MyEnum.class, ordinal);
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});
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assertThrows(EnumConstantNotPresentException.class, () -> {
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EnumTools.checkOrdinalOrDefault(MyEnum.class, null, ordinal);
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});
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}
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@Test
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void testCheckOrdinalOrDefault_null() {
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assertEquals(0, EnumTools.checkOrdinalOrDefault(MyEnum.class, null));
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assertEquals(1, EnumTools.checkOrdinalOrDefault(MyEnum.class, null, 1));
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assertNull(EnumTools.checkOrdinalOrDefault(MyEnum.class, null, null));
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}
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@Test
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void testGetValueNullable_0To3() {
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assertSame(MyEnum.VALUE_0, EnumTools.getValueNullable(MyEnum.class, 0));
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assertSame(MyEnum.VALUE_1, EnumTools.getValueNullable(MyEnum.class, 1));
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assertSame(MyEnum.VALUE_2, EnumTools.getValueNullable(MyEnum.class, 2));
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assertSame(MyEnum.VALUE_3, EnumTools.getValueNullable(MyEnum.class, 3));
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}
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@ParameterizedTest
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@ValueSource(ints = { -1, 4 })
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void testGetValueNullable_EnumConstantNotPresentException(int ordinal) {
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assertThrows(EnumConstantNotPresentException.class, () -> {
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EnumTools.getValueNullable(MyEnum.class, ordinal);
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});
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}
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@Test
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void testGetValueNullable_null() {
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assertNull(EnumTools.getValueNullable(MyEnum.class, null));
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assertThrows(NullPointerException.class, () -> EnumTools.getValueNullable(null, 0));
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assertThrows(NullPointerException.class, () -> EnumTools.getValueNullable(null, null));
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}
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@Test
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void testGetValueOrDefault_0To3() {
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assertSame(MyEnum.VALUE_0, EnumTools.getValueOrDefault(MyEnum.class, 0));
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assertSame(MyEnum.VALUE_1, EnumTools.getValueOrDefault(MyEnum.class, 1));
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assertSame(MyEnum.VALUE_2, EnumTools.getValueOrDefault(MyEnum.class, 2));
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assertSame(MyEnum.VALUE_3, EnumTools.getValueOrDefault(MyEnum.class, 3));
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assertSame(MyEnum.VALUE_0, EnumTools.getValueOrDefault(MyEnum.class, 0, () -> MyEnum.VALUE_1));
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assertSame(MyEnum.VALUE_1, EnumTools.getValueOrDefault(MyEnum.class, 1, () -> MyEnum.VALUE_0));
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assertSame(MyEnum.VALUE_2, EnumTools.getValueOrDefault(MyEnum.class, 2, () -> MyEnum.VALUE_0));
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assertSame(MyEnum.VALUE_3, EnumTools.getValueOrDefault(MyEnum.class, 3, () -> MyEnum.VALUE_0));
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assertSame(MyEnum.VALUE_0, EnumTools.getValueOrDefault(MyEnum.class, 0, () -> null));
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assertSame(MyEnum.VALUE_1, EnumTools.getValueOrDefault(MyEnum.class, 1, () -> null));
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assertSame(MyEnum.VALUE_2, EnumTools.getValueOrDefault(MyEnum.class, 2, () -> null));
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assertSame(MyEnum.VALUE_3, EnumTools.getValueOrDefault(MyEnum.class, 3, () -> null));
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}
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@ParameterizedTest
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@ValueSource(ints = { -1, 4 })
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void testGetValueOrDefault_EnumConstantNotPresentException(int ordinal) {
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assertThrows(EnumConstantNotPresentException.class, () -> {
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EnumTools.getValueOrDefault(MyEnum.class, ordinal);
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});
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assertThrows(EnumConstantNotPresentException.class, () -> {
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EnumTools.getValueOrDefault(MyEnum.class, ordinal, () -> MyEnum.VALUE_0);
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});
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}
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@Test
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void testGetValueOrDefault_null() {
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assertSame(MyEnum.VALUE_0, EnumTools.getValueOrDefault(MyEnum.class, null));
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assertSame(MyEnum.VALUE_0, EnumTools.getValueOrDefault(MyEnum.class, null, () -> MyEnum.VALUE_0));
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assertNull(EnumTools.getValueOrDefault(MyEnum.class, null, () -> null));
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assertThrows(NullPointerException.class, () -> EnumTools.getValueOrDefault(null, null));
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assertThrows(NullPointerException.class, () -> EnumTools.getValueOrDefault(null, -1));
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assertThrows(NullPointerException.class, () -> EnumTools.getValueOrDefault(null, 0));
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assertThrows(NullPointerException.class, () -> EnumTools.getValueOrDefault(null, 4));
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assertThrows(NullPointerException.class, () -> EnumTools.getValueOrDefault(null, null, () -> MyEnum.VALUE_0));
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assertThrows(NullPointerException.class, () -> EnumTools.getValueOrDefault(null, -1, () -> MyEnum.VALUE_1));
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assertThrows(NullPointerException.class, () -> EnumTools.getValueOrDefault(null, 0, () -> MyEnum.VALUE_1));
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assertThrows(NullPointerException.class, () -> EnumTools.getValueOrDefault(null, 4, () -> MyEnum.VALUE_0));
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assertThrows(NullPointerException.class, () -> EnumTools.getValueOrDefault(MyEnum.class, null, null));
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assertThrows(NullPointerException.class, () -> EnumTools.getValueOrDefault(MyEnum.class, -1, null));
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assertThrows(NullPointerException.class, () -> EnumTools.getValueOrDefault(MyEnum.class, 0, null));
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assertThrows(NullPointerException.class, () -> EnumTools.getValueOrDefault(MyEnum.class, 4, null));
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assertThrows(NullPointerException.class, () -> EnumTools.getValueOrDefault(null, null, null));
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assertThrows(NullPointerException.class, () -> EnumTools.getValueOrDefault(null, -1, null));
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assertThrows(NullPointerException.class, () -> EnumTools.getValueOrDefault(null, 0, null));
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assertThrows(NullPointerException.class, () -> EnumTools.getValueOrDefault(null, 4, null));
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}
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@Test
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void testValueOf_0To3() {
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assertSame(MyEnum.VALUE_0, EnumTools.valueOf(MyEnum.class, 0));
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assertSame(MyEnum.VALUE_1, EnumTools.valueOf(MyEnum.class, 1));
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assertSame(MyEnum.VALUE_2, EnumTools.valueOf(MyEnum.class, 2));
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assertSame(MyEnum.VALUE_3, EnumTools.valueOf(MyEnum.class, 3));
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assertSame(MyEnum.VALUE_0, EnumTools.valueOf(MyEnum.class, 0, MyEnum.VALUE_1));
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assertSame(MyEnum.VALUE_1, EnumTools.valueOf(MyEnum.class, 1, MyEnum.VALUE_0));
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assertSame(MyEnum.VALUE_2, EnumTools.valueOf(MyEnum.class, 2, MyEnum.VALUE_0));
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assertSame(MyEnum.VALUE_3, EnumTools.valueOf(MyEnum.class, 3, MyEnum.VALUE_0));
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assertSame(MyEnum.VALUE_0, EnumTools.valueOf(MyEnum.class, 0, null));
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assertSame(MyEnum.VALUE_1, EnumTools.valueOf(MyEnum.class, 1, null));
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assertSame(MyEnum.VALUE_2, EnumTools.valueOf(MyEnum.class, 2, null));
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assertSame(MyEnum.VALUE_3, EnumTools.valueOf(MyEnum.class, 3, null));
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}
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@ParameterizedTest
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@ValueSource(ints = { -1, 4 })
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void testValueOf_EnumConstantNotPresentException(int ordinal) {
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assertThrows(EnumConstantNotPresentException.class, () -> EnumTools.valueOf(MyEnum.class, ordinal));
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assertThrows(EnumConstantNotPresentException.class, () -> EnumTools.valueOf(MyEnum.class, ordinal, MyEnum.VALUE_0));
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assertThrows(EnumConstantNotPresentException.class, () -> EnumTools.valueOf(MyEnum.class, ordinal, null));
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}
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@Test
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void testValueOf_null() {
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assertThrows(NullPointerException.class, () -> EnumTools.valueOf(null, 0));
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assertSame(MyEnum.VALUE_0, EnumTools.valueOf(MyEnum.class, null, MyEnum.VALUE_0));
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assertNull(EnumTools.valueOf(MyEnum.class, null, null));
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}
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@Test
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void test_constructor_isNotAccessible_ThrowsIllegalStateException() {
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Constructor<?>[] constructors = EnumTools.class.getDeclaredConstructors();
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Arrays.stream(constructors)
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.forEach(constructor -> {
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assertFalse(constructor.isAccessible());
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constructor.setAccessible(true);
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Throwable cause = assertThrows(Exception.class, constructor::newInstance)
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.getCause();
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assertInstanceOf(IllegalStateException.class, cause);
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assertEquals("Utility class", cause.getMessage());
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});
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}
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}
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