Pronoid Android

...for I have spent the last couple of hours building Android JUnit test cases.

See my very first post to see how to run these kinds of tests. It's kinda cool; after triggering 'em from the command line, you can flip to the Android emulator, and see the windows and text appearing and disappearing...

A few interesting points here, anyways:

• Note that my test code is in a different package from my app code.
  
• In related news, we call getInstrumentation().getTargetContext() to open our database, not, repeat not, getInstrumentation().getContext().
  
• And to call the button-push in "testSaveData()", we have to annotate that method as a "@UiThreadTest" method.
  

Feast thine eyes:

package com.rezendi.wtw.test;

import android.content.Intent;
import android.database.Cursor;
import android.test.ActivityInstrumentationTestCase2;
import android.test.UiThreadTest;
import android.widget.Button;
import android.widget.EditText;

import com.rezendi.wtw.R;
import com.rezendi.wtw.Settings;
import com.rezendi.wtw.TravelNoteEdit;
import com.rezendi.wtw.TravelNotesDbAdapter;

/**
 * Test code for a travel-note lifecycle.
 * 
 * @author Jon Evans
 *
 */
public class NoteTest extends ActivityInstrumentationTestCase2 {
 
 public NoteTest() {
  super("com.rezendi.wtw", TravelNoteEdit.class);
 }

 /* (non-Javadoc)
  * @see android.test.AndroidTestCase#setUp()
  */
 protected void setUp() throws Exception {
  super.setUp();
 }

 /* (non-Javadoc)
  * @see android.test.AndroidTestCase#tearDown()
  */
 protected void tearDown() throws Exception {
  super.tearDown();
 }

 /**
  * Open an empty TravelNoteEdit and check all is well.
  */
 public void test1EmptyNote() {
  TravelNoteEdit tne = (TravelNoteEdit) getActivity();

  EditText titleEdit = (EditText) tne.findViewById(R.id.title);
     String titleText = titleEdit.getText().toString(); 
     assertEquals(0, titleText.length());

     EditText bodyEdit = (EditText) tne.findViewById(R.id.body);
     String bodyText = bodyEdit.getText().toString(); 
     assertEquals(0, bodyText.length());

     Button picButton = (Button) tne.findViewById(R.id.addPicture);
     assertEquals(picButton.getText(), tne.getText(R.string.addPicture));
 }

 /**
  * Open TravelNoteEdit, edit its contents, save its data, check saved data, delete.
  */
 @UiThreadTest
 public void test2DataSave() {
  TravelNoteEdit tne = (TravelNoteEdit) getActivity();

  tne.setLocationString("wtwTest"); // mark this as test data
  EditText titleEdit = (EditText) tne.findViewById(R.id.title);
  titleEdit.setText(titleEdit.getText().toString()+ "test edited");

     EditText bodyEdit = (EditText) tne.findViewById(R.id.body);
  bodyEdit.setText(bodyEdit.getText().toString()+ "test edited");

  Button saveButton = (Button) tne.findViewById(R.id.save);
  saveButton.performClick();

  //OK, we're done, so;
  TravelNotesDbAdapter dbAdapter = new TravelNotesDbAdapter(getInstrumentation().getTargetContext());
  dbAdapter.open();
  Cursor note = dbAdapter.fetchTestNotes();
        String newTitleText = note.getString(
             note.getColumnIndexOrThrow(TravelNotesDbAdapter.KEY_TITLE));
        String newBodyText = note.getString(
             note.getColumnIndexOrThrow(TravelNotesDbAdapter.KEY_BODY));
        note.close();

        assertEquals("test edited", newTitleText);
        assertEquals("test edited", newBodyText);

  dbAdapter.deleteTestData();
  dbAdapter.close();
 }

 /**
  * Create a note in the database, open TravelNoteEdit, check its contents.
  */
 public void test3DataLoad() {
  TravelNotesDbAdapter dbAdapter = new TravelNotesDbAdapter(getInstrumentation().getTargetContext());
  dbAdapter.open();
  long testId = dbAdapter.createNote(Settings.KEY_TEST, "test title", "test body", "test picture");

  Intent intent = new Intent(getInstrumentation().getTargetContext(), TravelNoteEdit.class);
     intent.putExtra(TravelNotesDbAdapter.KEY_ROWID, testId);
     this.setActivityIntent(intent);
     
  TravelNoteEdit tne = (TravelNoteEdit) getActivity();

  EditText titleEdit = (EditText) tne.findViewById(R.id.title);
     String titleText = titleEdit.getText().toString(); 
     assertEquals("test title", titleText);

     EditText bodyEdit = (EditText) tne.findViewById(R.id.body);
     String bodyText = bodyEdit.getText().toString(); 
     assertEquals("test body", bodyText);

     Button picButton = (Button) tne.findViewById(R.id.addPicture);
     assertEquals(picButton.getText(), tne.getText(R.string.seePicture));

  dbAdapter.deleteTestData();
  dbAdapter.close();
 }
}

Labels: Android, InstrumentationTestCase, Java, JUnit, testing