Android 自动化测试—robotium(九) Junit_report测试报告重定向输出到终端SDCard

借鉴网上相关资料主要用于无root权限的终端。主要分为以下三步：

一、重写InstrumentationTestRunner类：

package com.exmaple.test;

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.Writer;

import org.xmlpull.v1.XmlPullParserFactory;
import org.xmlpull.v1.XmlSerializer;

import android.content.Context;
import android.os.Bundle;
import android.os.Environment;

/**
 * This test runner creates a TEST-all.xml in the files directory of the application under test. The output is compatible with that of the junitreport ant task, the format
 * that is understood by Hudson. Currently this implementation does not implement the all aspects of the junitreport format, but enough for Hudson to parse the test results.
 */
public class InstrumentationTestRunner extends android.test.InstrumentationTestRunner {
    private Writer mWriter;
    private XmlSerializer mTestSuiteSerializer;
    private long mTestStarted;
    private static final String JUNIT_XML_FILE = "TEST-all.xml";

    @Override
    public void onStart() {
        try{
            File fileRobo = new File(getTestResultDir(getTargetContext()));
            if(!fileRobo.exists()){
                fileRobo.mkdir();
            }
            if(isSDCardAvaliable()){
                File resultFile = new File(getTestResultDir(getTargetContext()),JUNIT_XML_FILE);
                startJUnitOutput(new FileWriter(resultFile));
            }else{
                startJUnitOutput(new FileWriter(new File(getTargetContext().getFilesDir(), JUNIT_XML_FILE)));
            }
        }
        catch(IOException e){
            throw new RuntimeException(e);
        }
        super.onStart();
    }

    void startJUnitOutput(Writer writer) {
        try {
            mWriter = writer;
            mTestSuiteSerializer = newSerializer(mWriter);
            mTestSuiteSerializer.startDocument(null, null);
            mTestSuiteSerializer.startTag(null, "testsuites");
            mTestSuiteSerializer.startTag(null, "testsuite");
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * 判断SD卡是否存在
     * @return
     */
    private boolean isSDCardAvaliable(){
        return Environment.getExternalStorageState()
                    .equals(Environment.MEDIA_MOUNTED);
    }

    /**
     * 获取测试结果报告文件所在的路径
     * @param context  被测工程的context
     * @return  返回测试结果报告文件所在的路径
     */
    private String getTestResultDir(Context context){
        String packageName = "/" + "robotium";
        String filepath = context.getCacheDir().getPath() + packageName;

        if(android.os.Build.VERSION.SDK_INT < 8){
            if(isSDCardAvaliable()){
                filepath = Environment.getExternalStorageDirectory().getAbsolutePath()+ packageName;
            }
        }else{
            if(isSDCardAvaliable()){
                filepath = Environment.getExternalStorageDirectory().getAbsolutePath()+ packageName;
            }
        }
        return filepath;
    }

    private XmlSerializer newSerializer(Writer writer) {
        try {
            XmlPullParserFactory pf = XmlPullParserFactory.newInstance();
            XmlSerializer serializer = pf.newSerializer();
            serializer.setOutput(writer);
            return serializer;
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    @Override
    public void sendStatus(int resultCode, Bundle results) {
        super.sendStatus(resultCode, results);
        switch (resultCode) {
            case REPORT_VALUE_RESULT_ERROR:
            case REPORT_VALUE_RESULT_FAILURE:
            case REPORT_VALUE_RESULT_OK:
            try {
                recordTestResult(resultCode, results);
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
                break;
            case REPORT_VALUE_RESULT_START:
                recordTestStart(results);
            default:
                break;
        }
    }

    void recordTestStart(Bundle results) {
        mTestStarted = System.currentTimeMillis();
    }

    void recordTestResult(int resultCode, Bundle results) throws IOException {
        float time = (System.currentTimeMillis() - mTestStarted) / 1000.0f;
        String className = results.getString(REPORT_KEY_NAME_CLASS);
        String testMethod = results.getString(REPORT_KEY_NAME_TEST);
        String stack = results.getString(REPORT_KEY_STACK);
        int current = results.getInt(REPORT_KEY_NUM_CURRENT);
        int total = results.getInt(REPORT_KEY_NUM_TOTAL);

        mTestSuiteSerializer.startTag(null, "testcase");
        mTestSuiteSerializer.attribute(null, "classname", className);
        mTestSuiteSerializer.attribute(null, "name", testMethod);

        if (resultCode != REPORT_VALUE_RESULT_OK) {
            mTestSuiteSerializer.startTag(null, "failure");
            if (stack != null) {
                String reason = stack.substring(0, stack.indexOf('\n'));
                String message = "";
                int index = reason.indexOf(':');
                if (index > -1) {
                    message = reason.substring(index+1);
                    reason = reason.substring(0, index);
                }
                mTestSuiteSerializer.attribute(null, "message", message);
                mTestSuiteSerializer.attribute(null, "type", reason);
                mTestSuiteSerializer.text(stack);
            }
            mTestSuiteSerializer.endTag(null, "failure");
        } else {
            mTestSuiteSerializer.attribute(null, "time", String.format("%.3f", time));
        }
        mTestSuiteSerializer.endTag(null, "testcase");
        if (current == total) {
            mTestSuiteSerializer.startTag(null, "system-out");
            mTestSuiteSerializer.endTag(null, "system-out");
            mTestSuiteSerializer.startTag(null, "system-err");
            mTestSuiteSerializer.endTag(null, "system-err");
            mTestSuiteSerializer.endTag(null, "testsuite");
            mTestSuiteSerializer.flush();
        }
    }

    @Override
    public void finish(int resultCode, Bundle results) {
        endTestSuites();
        super.finish(resultCode, results);
    }

    void endTestSuites() {
        try {
            mTestSuiteSerializer.endTag(null, "testsuites");
            mTestSuiteSerializer.endDocument();
            mTestSuiteSerializer.flush();
            mWriter.flush();
            mWriter.close();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }
}

二、修改AndroidMainfest.xml文件为：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.exmaple.test"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk android:minSdkVersion="8" />

    <instrumentation
        android:name="com.exmaple.test.InstrumentationTestRunner"
        android:targetPackage="com.exmaple.my4s" />

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" >
        <uses-library android:name="android.test.runner" />
    </application>

</manifest>

三、修改工程run as configuration,在instrumentation runner处，选择"com.exmaple.test.InstrumentationTestRunner",并点击apply→ok即可