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Testing the SWT GUI with SWTBot

I want to test a simple GUI GUI application with SWTBot . Unfortunately, I have no idea how to start. There are several tutorials that describe testing the Eclipse plug-in, but I could not find anything regarding my problem. I don’t even know if this is possible.

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Well, that’s very possible. Follow the instructions below.

Now at this point you are ready to play with SWTBot .

For demo purpose, I wrote a small login dialog for you, and it will look like this: enter image description here

The code

 import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; public class SampleSWTUI { public Shell showGUI(final Display display) { Shell shell = new Shell(display); shell.setLayout(new GridLayout(3,true)); shell.setText("Sample SWT UI"); new Label(shell, SWT.NONE).setText("User Name: "); final Text nameText = new Text(shell, SWT.BORDER); nameText.setText (""); GridData data = new GridData(SWT.FILL, SWT.FILL, true, false); data.horizontalSpan = 2; nameText.setLayoutData(data); new Label(shell, SWT.NONE).setText("Password: "); final Text passwordText = new Text(shell, SWT.BORDER|SWT.PASSWORD); passwordText.setText (""); data = new GridData(SWT.FILL, SWT.FILL, true, false); data.horizontalSpan = 2; passwordText.setLayoutData(data); Button loginButton = new Button (shell, SWT.PUSH); loginButton.setText ("Login"); data = new GridData(SWT.FILL, SWT.FILL, true, false); data.horizontalSpan = 3; loginButton.setLayoutData(data); loginButton.addSelectionListener(new SelectionAdapter(){ public void widgetSelected(SelectionEvent e) { String user = nameText.getText(); String password = passwordText.getText(); System.out.println("\n\n\n"); if(user.equals("Favonius") && password.equals("abcd123")){ System.out.println("Success !!!"); }else { System.err.println("What the .. !! Anyway it is just a demo !!"); } } }); shell.pack(); shell.open(); return shell; } public static void main(String [] args) { Display display = new Display(); Shell shell = new SampleSWTUI().showGUI(display); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); } }

Now create a JUnit test case (google for it if you are new to it). Also add all jar files to SWTBot (the one you downloaded) in the classpath .

Now first create a display (because the application needs it). Also get a container handle in which your widgets / controls are present. In my case, this is Shell .

SWTBot Code

 import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.swtbot.swt.finder.SWTBot; import org.eclipse.swtbot.swt.finder.utils.SWTBotPreferences; import org.eclipse.swtbot.swt.finder.widgets.SWTBotButton; import org.eclipse.swtbot.swt.finder.widgets.SWTBotText; import org.junit.Test; public class SWTBotDemo { @Test public void test() { SWTBotPreferences.PLAYBACK_DELAY = 100; // slow down tests...Otherwise we won't see anything Display display = new Display(); Shell shell = new SampleSWTUI().showGUI(display); SWTBot bot = new SWTBot(shell); SWTBotButton loginButton = bot.button("Login"); SWTBotText userText = bot.textWithLabel("User Name: "); SWTBotText passwordText = bot.textWithLabel("Password: "); userText.setFocus(); userText.setText("Superman"); assert(userText.getText().equals("Superman")); passwordText.setFocus(); passwordText.setText("test123"); assert(userText.getText().equals("test123")); loginButton.setFocus(); loginButton.click(); userText.setFocus(); userText.setText("Favonius"); assert(userText.getText().equals("Favonius")); passwordText.setFocus(); passwordText.setText("abcd123"); assert(userText.getText().equals("abcd123")); loginButton.setFocus(); loginButton.click(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); } }

Now all the methods and variables of SWTBot are well defined in the source and source bundled in the banks of SWTBot. That way you can always go and crack the source code.

additional literature

Hope this helps.

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