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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.drools.core.lock;
public class TestUtils {
/**
* Invokes a function that is expected to throw an exception.
*
* @param clazz class of exception that is expected
* @param func
* @return
*/
public static <T> T expectException(Class<T> clazz, VoidFunction func) {
try {
func.apply(null);
throw new AssertionError("missing exception");
} catch (Exception e) {
try {
return clazz.cast(e);
} catch (ClassCastException e2) {
throw new AssertionError("incorrect exception type", e2);
}
}
}
/**
* Void function that may throw an exception.
*/
@FunctionalInterface
public static interface VoidFunction {
/**
*
* @param arg always {@code null}
*/
public void apply(Void arg) throws Exception;
}
}
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