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# Start running the installer as the AUT from here If we put everything together it could look like this: def main(): Let’s get them to do something helpful! Putting Everything Together We have completed the two helper functions from the pseudo code we started out with. The command line this time: $SQUISH_PREFIX/bin/squishserver -config addAUT your_installer_name /Volumes/Disk_Image/. Test.fatal("Registering installer as AUT failed:") Test.startSection("Register installer as AUT")

For that to work the installer has to be registered with Squish as a separate application under test (AUT) – which boils down to another command line call: def registerInstallerAsAUT(): The next step is to execute the installer so that we can record and replay actions on it as usual. The disk image is mounted and macOS should have opened a window as if we had clicked it manually. Registering the Installer as a Squish AUT (The open command performs the same action as clicking an item in a Finder window would.) You’ll notice we use this code pattern several times to execute the commands we need. This snippet essentially just executes the command open ~/path/to/Application.dmg and makes use of macOS’s automatic dmg mounting mechanism. Test.fatal("File: %s" % os.path.join(dmg_file_path, dmg_file_name)) Let’s start with openDmg() so that we can see what’s inside the image… def openDmg(): The others are helpers we are going to implement in the next paragraphs to access the dmg installer image. You might recognize the next-to-last one, it is the built-in Squish function to start an application under test. StartApplication("application_installer")Īs you can see, there are three functions. RegisterInstallerAsAUT("application_installer") The easiest way to get to grips with the contents of a disk image (from Squish) is to open it via the command line. But before we get our hands dirty let’s start by looking at the general idea in pseudo code: openDmg("my_application_installer.dmg") They usually contain either the app bundle itself or an installer package (.pkg) that performs additional setup besides extracting an app bundle to /Applications. Since we are on macOS, applications are packaged inside disk image (.dmg) files.

Just in case you are (also) on Windows, we outlined a procedure for MSI installers in an earlier blog post. That procedure is part of the first impression you make, so it would be nice to get it right, wouldn’t it? Let’s take a look! However for a new user, there are a few steps to take until they even run the application in the first place: they need to install it. If you have used Squish before, you probably already test your application thoroughly.