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/*
* ============LICENSE_START=======================================================
* ONAP
* ================================================================================
* Copyright (C) 2018 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.onap.policy.common.utils.test;
public class PolicyAssert {
/**
* Should not instantiate this.
*/
private PolicyAssert() {
// do nothing
}
/**
* Invokes a function that is expected to throw an exception.
*
* @param clazz class of exception that is expected
* @param func function
* @return the exception that was thrown
* @throws AssertionError if the function does not throw an exception or throws the
* wrong type of exception
*/
public static <T extends Throwable> T assertThrows(Class<T> clazz, RunnableWithEx func) {
try {
func.run();
} catch (Throwable thrown) {
try {
return clazz.cast(thrown);
} catch (ClassCastException thrown2) {
throw new AssertionError("incorrect exception type", thrown2);
}
}
throw new AssertionError("missing exception");
}
/**
* Runnable that may throw an exception.
*/
@FunctionalInterface
public static interface RunnableWithEx {
public void run() throws Throwable;
}
}
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