/*
 * Copyright (C) 2023 Hedera Hashgraph, LLC
 *
 * Licensed 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 com.hedera.services.utils;

import static org.assertj.core.api.Assertions.assertThatThrownBy;
import static org.junit.jupiter.api.Assertions.assertTrue;

import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Modifier;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.mockito.junit.jupiter.MockitoExtension;

@ExtendWith(MockitoExtension.class)
class NewRelsTest {

    @Test
    void throwIfConstructorCalled() throws NoSuchMethodException {
        Constructor<NewRels> ctor;
        ctor = NewRels.class.getDeclaredConstructor();
        assertTrue(Modifier.isPrivate(ctor.getModifiers()));
        ctor.setAccessible(true);
        assertThatThrownBy(ctor::newInstance)
                .isInstanceOf(InvocationTargetException.class)
                .hasCauseInstanceOf(UnsupportedOperationException.class)
                .hasRootCauseMessage("Utility Class");
    }
}
