support/src/android/support/test/internal/runner/junit3/AndroidJUnit3Builder.java


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/*
 * Copyright (C) 2012 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.junit3;

import android.app.Instrumentation;
import android.os.Bundle;

import junit.framework.TestCase;

import org.junit.internal.builders.JUnit3Builder;
import org.junit.runner.Runner;
import org.junit.runners.model.RunnerBuilder;

/**
 * A {@link RunnerBuilder} that will build customized runners needed for specialized Android
 * {@link TestCase}s and to support {@link android.test.suitebuilder.annotation}s.
 */
public class AndroidJUnit3Builder extends JUnit3Builder {

    private Instrumentation mInstr;
    private boolean mSkipExecution;
    private final Bundle mBundle;

    public AndroidJUnit3Builder(Instrumentation instr, Bundle bundle, boolean skipExecution) {
        mInstr = instr;
        mBundle = bundle;
        mSkipExecution = skipExecution;
    }

    @Override
    public Runner runnerForClass(Class<?> testClass) throws Throwable {
        if (isJUnit3Test(testClass)) {
            if (mSkipExecution) {
                return new JUnit38ClassRunner(new NoExecTestSuite(testClass));
            } else {
                return new JUnit38ClassRunner(new AndroidTestSuite(testClass, mBundle, mInstr));
            }
        }
        return null;
    }

    boolean isJUnit3Test(Class<?> testClass) {
        return junit.framework.TestCase.class.isAssignableFrom(testClass);
    }
}