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/*
* Copyright (C) 2014 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 android.support.test.internal.runner;
import android.os.Bundle;
import java.util.concurrent.atomic.AtomicReference;
/**
* An exposed registry instance to make it easy for callers to find the instrumentation arguments.
*/
public final class InstrumentationArgumentsRegistry {
private static final AtomicReference<Bundle> sArguments = new AtomicReference<Bundle>(null);
/**
* Returns a copy of instrumentation arguments Bundle.
* <p>
* This Bundle is not guaranteed to be present under all instrumentations.
* </p>
*
* @return Bundle the arguments for this instrumentation.
* @throws IllegalStateException if no argument Bundle has been registered.
*/
public static Bundle getInstance() {
Bundle instance = sArguments.get();
if (null == instance) {
throw new IllegalStateException("No instrumentation arguments registered! "
+ "Are you running under an Instrumentation which registers arguments?");
}
return new Bundle(instance);
}
/**
* Stores a copy of the instrumentation arguments Bundle in the registry.
* <p>
* This is a global registry - so be aware of the impact of calling this method!
* </p>
*
* @param arguments the arguments for this application. Null deregisters any existing arguments.
*/
public static void registerInstance(Bundle arguments) {
InstrumentationArgumentsRegistry.sArguments.set(new Bundle(arguments));
}
private InstrumentationArgumentsRegistry() { }
}
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