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This bundle registers different test registry as OSGi service.
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/*
 * Copyright 2017 Nikolas Falco
 * 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 com.github.nfalco79.junit4osgi.registry.spi;

import java.net.URL;

import org.osgi.framework.Bundle;

/**
 * The java bean that carries the JUnit test class informations.
 * 
 * This bean also returns the class without trigger the bundle activator until
 * the {@link #getTestClass()} is called.
 *
 * @author nikolasfalco
 */
public class TestBean {
	private String className;
	private transient Bundle bundle;

	public TestBean(Bundle bundle, String className) {
		if (bundle == null) {
			throw new NullPointerException("context is null");
		}
		if (className == null) {
			throw new NullPointerException("className is null");
		}

		URL entry = bundle.getEntry('/' + className.replace('.', '/') + ".class");
		if (entry == null) {
			throw new IllegalArgumentException(className + " not found in bundle " + bundle.getSymbolicName());
		}
		this.bundle = bundle;
		this.className = className;
	}

	public String getName() {
		return className;
	}

	public Class getTestClass() throws ClassNotFoundException {
		return bundle.loadClass(className);
	}

	public String getId() {
		return bundle.getSymbolicName() + '@' + className;
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((bundle == null) ? 0 : bundle.hashCode());
		result = prime * result + ((className == null) ? 0 : className.hashCode());
		return result;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj) {
			return true;
		}
		if (obj == null) {
			return false;
		}
		if (!(obj instanceof TestBean)) {
			return false;
		}
		TestBean other = (TestBean) obj;
		if (bundle == null) {
			if (other.bundle != null) {
				return false;
			}
		} else if (!bundle.equals(other.bundle)) {
			return false;
		}
		if (className == null) {
			if (other.className != null) {
				return false;
			}
		} else if (!className.equals(other.className)) {
			return false;
		}
		return true;
	}

	@Override
	public String toString() {
		return getId();
	}
}