/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with this
 * work for additional information regarding copyright ownership. The ASF
 * licenses this file to You 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 org.apache.sling.junit;


/** Provider of {@link SlingTestContext} that uses
 *  thread locals to provide per-testing thread contexts.   
 */
public class SlingTestContextProvider {
    private static final ThreadLocal<SlingTestContext> threadLocal = new ThreadLocal<SlingTestContext>();
    
    public static SlingTestContext getContext() {
        final SlingTestContext result = threadLocal.get();
        if(result == null) {
            throw new IllegalStateException("Null context, createContext() not called?");
        }
        return result;
    }
    
    public static SlingTestContext createContext() {
        threadLocal.set(new SlingTestContext());
        return getContext();
    }
    
    public static void deleteContext() {
        threadLocal.set(null);
    }
    
    public static boolean hasContext() {
        return threadLocal.get() != null;
    }
}