CircuitBreakingExceptionTest.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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
 *
 *      https://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 org.apache.commons.lang3.concurrent;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.assertThrows;

import org.apache.commons.lang3.exception.AbstractExceptionTest;
import org.junit.jupiter.api.Test;

/**
 * JUnit tests for {@link CircuitBreakingException}.
 */
class CircuitBreakingExceptionTest extends AbstractExceptionTest {

    @Test
    void testThrowingEmptyException() {
        assertThrows(CircuitBreakingException.class, () -> {
            throw new CircuitBreakingException();
        });
    }

    @Test
    void testThrowingExceptionWithCause() {
        assertThrows(CircuitBreakingException.class, () -> {
            throw new CircuitBreakingException(generateCause());
        });
    }

    @Test
    void testThrowingExceptionWithMessage() {
        assertThrows(CircuitBreakingException.class, () -> {
            throw new CircuitBreakingException(EXCEPTION_MESSAGE);
        });
    }

    @Test
    void testThrowingInformativeException() {
        assertThrows(CircuitBreakingException.class, () -> {
            throw new CircuitBreakingException(EXCEPTION_MESSAGE, generateCause());
        });
    }

    @Test
    void testWithCauseAndMessage() {
        final Exception exception = new CircuitBreakingException(EXCEPTION_MESSAGE, generateCause());
        assertNotNull(exception);
        assertEquals(EXCEPTION_MESSAGE, exception.getMessage(), WRONG_EXCEPTION_MESSAGE);

        final Throwable cause = exception.getCause();
        assertNotNull(cause);
        assertEquals(CAUSE_MESSAGE, cause.getMessage(), WRONG_CAUSE_MESSAGE);
    }

    @Test
    void testWithoutCause() {
        final Exception exception = new CircuitBreakingException(EXCEPTION_MESSAGE);
        assertNotNull(exception);
        assertEquals(EXCEPTION_MESSAGE, exception.getMessage(), WRONG_EXCEPTION_MESSAGE);

        final Throwable cause = exception.getCause();
        assertNull(cause);
    }

    @Test
    void testWithoutMessage() {
        final Exception exception = new CircuitBreakingException(generateCause());
        assertNotNull(exception);
        assertNotNull(exception.getMessage());

        final Throwable cause = exception.getCause();
        assertNotNull(cause);
        assertEquals(CAUSE_MESSAGE, cause.getMessage(), WRONG_CAUSE_MESSAGE);
    }
}