Question

I want to test shut down and switch on information in junit.

public void shutDownState(Context cxt) {
    Log.d(TAG, "in shutdown fun");
    SimpleDateFormat sdfDateTime1 = new SimpleDateFormat(
            "yy-MM-dd HH:mm:ss", Locale.US);
    shutDownTime = sdfDateTime1.format(System.currentTimeMillis());
    try {
        long swithchoffdata;
        if (!"00:00:00.000".equals(dsd.getLastRecord())) {
            swithchoffdata = dsd.insert(shutDownTime.toString(),
                    switchOnTime);
            Log.d(TAG, "switchoffdata: " + swithchoffdata);
        }
    } catch (NullPointerException ne) {
        ne.printStackTrace();
        Log.d(TAG, "Swithch off error: ");
    }
    Log.d(TAG, "swith off: " + dsd.selectAll());
}

public void swithOnState() {
    Log.d("appcheck", "switch on func");
    SimpleDateFormat sdfDateTime1 = new SimpleDateFormat(
            "yy-MM-dd HH:mm:ss", Locale.US);
    switchOnTime = sdfDateTime1.format(System.currentTimeMillis());
    dsd.updateLastRecord(switchOnTime);
    Log.d("appcheck", "switch on: " + dsd.selectAll());
}

These are my methods in actual project. What I should do actually in my test class to unit test this methods. Please help me out. Thanks in advance.

Answer 1

Here is a template that might work. There are a lot of unanswered questions about your code. Are these methods in an Activity, for example? I assume so. I recommend the AndroidTestCase as it doesn’t launch the activity and so consumes much less overhead and runs faster. The AndroidTestCase provides an mContext member variable so that you can pass the context to your shutDownState() method.

package com.example.test;

import android.test.AndroidTestCase;

import com.example.YourActivity;

public class YourActivityTest extends AndroidTestCase
{

  private YourActivity mActivity;

  protected void setUp() throws Exception
  {
    super.setUp();
    mActivity = new YourActivity();
    // whatever else you need
  }

  protected void tearDown() throws Exception
  {
    super.tearDown();

    // whatever else you need
  }

  public void testShutDownState()
  {
    mActivity.shutDownState(mContext); // mContext is a dummy context provided
                                   // by AndroidTestCase
    // put some asserts here to confirm correct operation
  }

  public void testSwithOnState()// note: you misspelled switch
  {
    mActivity.swithOnState();

    // put some asserts here to confirm correct operation
  }

}

You can check your class member variables (such as switchOnTime) using asserts after the call.

Hope this helps.