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Android example source code file (AndroidTestRunner.java)

This example Android source code file (AndroidTestRunner.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" TM.

Java - Android tags/keywords

android, androidtestcase, app, class, classnotfoundexception, collect, collections, content, context, could, google, illegalaccessexception, instantiationexception, list, string, suppresswarnings, test, testcase, testresult, testsuiteprovider

The AndroidTestRunner.java Android example source code

/*
 * Copyright (C) 2007 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.test;

import android.app.Instrumentation;
import android.content.Context;
import android.os.PerformanceCollector.PerformanceResultsWriter;

import com.google.android.collect.Lists;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestListener;
import junit.framework.TestResult;
import junit.framework.TestSuite;
import junit.runner.BaseTestRunner;

import java.lang.reflect.InvocationTargetException;
import java.util.List;

public class AndroidTestRunner extends BaseTestRunner {

    private TestResult mTestResult;
    private String mTestClassName;
    private List<TestCase> mTestCases;
    private Context mContext;
    private boolean mSkipExecution = false;

    private List<TestListener> mTestListeners = Lists.newArrayList();
    private Instrumentation mInstrumentation;
    private PerformanceResultsWriter mPerfWriter;

    @SuppressWarnings("unchecked")
    public void setTestClassName(String testClassName, String testMethodName) {
        Class testClass = loadTestClass(testClassName);

        if (shouldRunSingleTestMethod(testMethodName, testClass)) {
            TestCase testCase = buildSingleTestMethod(testClass, testMethodName);
            mTestCases = Lists.newArrayList(testCase);
            mTestClassName = testClass.getSimpleName();
        } else {
            setTest(getTest(testClass), testClass);
        }
    }

    public void setTest(Test test) {
        setTest(test, test.getClass());
    }

    private void setTest(Test test, Class<? extends Test> testClass) {
        mTestCases = (List<TestCase>) TestCaseUtil.getTests(test, true);
        if (TestSuite.class.isAssignableFrom(testClass)) {
            mTestClassName = TestCaseUtil.getTestName(test);
        } else {
            mTestClassName = testClass.getSimpleName();
        }
    }

    public void clearTestListeners() {
        mTestListeners.clear();
    }

    public void addTestListener(TestListener testListener) {
        if (testListener != null) {
            mTestListeners.add(testListener);
        }
    }

    @SuppressWarnings("unchecked")
    private Class<? extends Test> loadTestClass(String testClassName) {
        try {
            return (Class<? extends Test>) mContext.getClassLoader().loadClass(testClassName);
        } catch (ClassNotFoundException e) {
            runFailed("Could not find test class. Class: " + testClassName);
        }
        return null;
    }

    private TestCase buildSingleTestMethod(Class testClass, String testMethodName) {
        try {
            TestCase testCase = (TestCase) testClass.newInstance();
            testCase.setName(testMethodName);
            return testCase;
        } catch (IllegalAccessException e) {
            runFailed("Could not access test class. Class: " + testClass.getName());
        } catch (InstantiationException e) {
            runFailed("Could not instantiate test class. Class: " + testClass.getName());
        }

        return null;
    }

    private boolean shouldRunSingleTestMethod(String testMethodName,
            Class<? extends Test> testClass) {
        return testMethodName != null && TestCase.class.isAssignableFrom(testClass);
    }

    private Test getTest(Class clazz) {
        if (TestSuiteProvider.class.isAssignableFrom(clazz)) {
            try {
                TestSuiteProvider testSuiteProvider =
                        (TestSuiteProvider) clazz.getConstructor().newInstance();
                return testSuiteProvider.getTestSuite();
            } catch (InstantiationException e) {
                runFailed("Could not instantiate test suite provider. Class: " + clazz.getName());
            } catch (IllegalAccessException e) {
                runFailed("Illegal access of test suite provider. Class: " + clazz.getName());
            } catch (InvocationTargetException e) {
                runFailed("Invocation exception test suite provider. Class: " + clazz.getName());
            } catch (NoSuchMethodException e) {
                runFailed("No such method on test suite provider. Class: " + clazz.getName());
            }
        }
        return getTest(clazz.getName());
    }

    protected TestResult createTestResult() {
        if (mSkipExecution) {
            return new NoExecTestResult();
        }
        return new TestResult();
    }

    void setSkipExecution(boolean skip) {
        mSkipExecution = skip;
    }

    public List<TestCase> getTestCases() {
        return mTestCases;
    }

    public String getTestClassName() {
        return mTestClassName;
    }

    public TestResult getTestResult() {
        return mTestResult;
    }

    public void runTest() {
        runTest(createTestResult());
    }

    public void runTest(TestResult testResult) {
        mTestResult = testResult;

        for (TestListener testListener : mTestListeners) {
            mTestResult.addListener(testListener);
        }

        Context testContext = mInstrumentation == null ? mContext : mInstrumentation.getContext();
        for (TestCase testCase : mTestCases) {
            setContextIfAndroidTestCase(testCase, mContext, testContext);
            setInstrumentationIfInstrumentationTestCase(testCase, mInstrumentation);
            setPerformanceWriterIfPerformanceCollectorTestCase(testCase, mPerfWriter);
            testCase.run(mTestResult);
        }
    }

    private void setContextIfAndroidTestCase(Test test, Context context, Context testContext) {
        if (AndroidTestCase.class.isAssignableFrom(test.getClass())) {
            ((AndroidTestCase) test).setContext(context);
            ((AndroidTestCase) test).setTestContext(testContext);
        }
    }

    public void setContext(Context context) {
        mContext = context;
    }

    private void setInstrumentationIfInstrumentationTestCase(
            Test test, Instrumentation instrumentation) {
        if (InstrumentationTestCase.class.isAssignableFrom(test.getClass())) {
            ((InstrumentationTestCase) test).injectInstrumentation(instrumentation);
        }
    }

    private void setPerformanceWriterIfPerformanceCollectorTestCase(
            Test test, PerformanceResultsWriter writer) {
        if (PerformanceCollectorTestCase.class.isAssignableFrom(test.getClass())) {
            ((PerformanceCollectorTestCase) test).setPerformanceResultsWriter(writer);
        }
    }

    public void setInstrumentation(Instrumentation instrumentation) {
        mInstrumentation = instrumentation;
    }

    /**
     * @deprecated Incorrect spelling,
     * use {@link #setInstrumentation(android.app.Instrumentation)} instead.
     */
    @Deprecated
    public void setInstrumentaiton(Instrumentation instrumentation) {
        setInstrumentation(instrumentation);
    }

    /**
     * {@hide} Pending approval for public API.
     */
    public void setPerformanceResultsWriter(PerformanceResultsWriter writer) {
        mPerfWriter = writer;
    }

    @Override
    protected Class loadSuiteClass(String suiteClassName) throws ClassNotFoundException {
        return mContext.getClassLoader().loadClass(suiteClassName);
    }

    public void testStarted(String testName) {
    }

    public void testEnded(String testName) {
    }

    public void testFailed(int status, Test test, Throwable t) {
    }

    protected void runFailed(String message) {
        throw new RuntimeException(message);
    }
}

Other Android examples (source code examples)

Here is a short list of links related to this Android AndroidTestRunner.java source code file:

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