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/*
* Copyright (C) 2015 The Android Open Source Project
*
* 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 tests.util;
/**
* Runner which executes the provided code under test (via a callback) for each provided input
* value.
*/
public final class ForEachRunner {
/**
* Callback parameterized with a value.
*/
public interface Callback<T> {
/**
* Invokes the callback for the provided value.
*/
void run(T value) throws Exception;
}
private ForEachRunner() {}
/**
* Invokes the provided callback for each of the provided named values.
*
* @param namesAndValues named values represented as name-value pairs.
*
* @param <T> type of value.
*/
public static <T> void runNamed(Callback<T> callback, Iterable<Pair<String, T>> namesAndValues)
throws Exception {
for (Pair<String, T> nameAndValue : namesAndValues) {
try {
callback.run(nameAndValue.getSecond());
} catch (Throwable e) {
throw new Exception("Failed for " + nameAndValue.getFirst() + ": " + e.getMessage(), e);
}
}
}
}
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