/*

* Copyright © 2012 The Feign Authors (feign@commonhaus.dev)

*

* 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 feign.utils;

import static org.assertj.core.api.Assertions.assertThat;

import org.junit.jupiter.api.Test;

class ExceptionUtilsTest {

@Test

void rootCauseOfNullIsNull() {

Throwable e = null;

Throwable rootCause = ExceptionUtils.getRootCause(e);

assertThat(rootCause).isNull();

}

@Test

void rootCauseIsSelf() {

Throwable e = new Exception();

Throwable rootCause = ExceptionUtils.getRootCause(e);

assertThat(rootCause).isSameAs(e);

}

@Test

void rootCauseIsDifferent() {

Throwable rootCause = new Exception();

Throwable e = new Exception(rootCause);

Throwable actualRootCause = ExceptionUtils.getRootCause(e);

assertThat(actualRootCause).isSameAs(rootCause);

}

}