Tune-up is a collection of JavaScript utilities that builds upon and improves
the UIAutomation library provided by Apple for testing iOS applications via
Instruments (get it? "tune-up"? Instruments? get it?).
While the JavaScript library provided by Apple is fairly complete and robust, it is a bit wordy and repetitive at times. This project aims to reduce as much pain as possible when writing UI tests by enhancing the existing API. It also provides some basic structure for your tests in a manner familiar to most testers.
Put the files for this project in the same location as your test scripts that your run from Instruments. I like to use git submodules for third-party libraries like so:
git submodule add git://github.com/alexvollmer/tuneup_js.git tuneup
Then at the top of each test script include the following:
#import "tuneup/tuneup.js"
Regardless of how you like to structure your tests, the path in the initial
#import statement in your test script needs to be relative to the path
of the tuneup library.
To create a test case, use the test() function, which takes the name of
the test case as a string, and a function. The function will be given a
UIATarget instance and a UIAApplication instance. For example:
test("Sign-In Screen", function(target, app) {
// The target and app arguments are your portals into the running application
// Exercise and validate to your heart's content
});
test("Sign-out Screen", function(target, app) {
// now exercise and validate the sign-out screen
});
See the test.js file for details.
Tune-up comes with a handful of basic xUnit-like assertions (and more are on the way). For now though, the basic assertions supported are:
assertNotNullassertEqualsassertMatchassertTrueassertFalseassertWindow(more on this below)fail
See the assertions.js file for all the details.
A common theme in writing integration tests for "screen flows" is the repetitive cycle of making several assertions on a screen, then engaging some user-control after all of the assertions pass. With the UIAutomation API as it is, it's easy to lose sight of this structure when bogged down in the syntax of asserting and navigating the user interface.
To make this cycle more obvious, and cut down on unnecessary verbosity, use the
assertWindow function. It works by applying a given JavaScript object literal
to the current main window (UIAWindow instance).
The full details are documented in assertions.js, but here's a taste of what
this assertion can do for your tests. Prior to assertWindow you would have
to do something like this:
test("my test", function(app, target) { mainWindow = app.mainWindow(); navBar = mainWindow.navigationBar(); leftButton = navBar.leftButton(); rightButton = navBar.rightButton();
assertEquals("Back", leftButton.name());
assertEquals("Done", rightButton.name());
tableViews = mainWindow.tableViews();
assertEquals(1, tableViews.length);
table = tableViews[0];
assertEquals("First Name", table.groups()[0].staticTexts()[0].name());
assertEquals("Last Name", table.groups()[1].staticTexts()[0].name());
assertEquals("Fred", table.cells()[0].name());
assertEquals("Flintstone", table.cells()[1].name());
});
With assertWindow, you can boil it down to this:
test("my test", function(app, target) { assertWindow({ navigationBar: { leftButton: { name: "Back" }, rightButton: { name: "Done" } }, tableViews: [ { groups: [ { name: "First Name" }, { name: "Last Name" } ], cells: [ { name: "Fred" }, { name: "Flintstone" } ] } ] }); });
You can do more than just match string literals. Check out the full
documentation in assertions.js for all the details.
The UIAutomation library is pretty full-featured, but is a little wordy.
Tune-up provides several extensions to the built-in UIAutomation classes in
an attempt to cut down on the verbosity of your tests.
See the uiautomation-ext.js for details.
- Fork the project.
- Make your feature addition or bug fix.
- Test the darn thing with your own apps (built-in testing to come)
- Commit to your local repo and send me a pull request. Bonus points for topic branches.
Copyright (c) 2010 Alex Vollmer. See LICENSE for details.