How to Check whether my install handler works properly?

Question

I have created a Installhandler class for the custom setting object and I would like to test whether it works properly when the installer installs it? How can I accomplish this? Since this is the first time I am creating the package I would like to know the steps for achieving the same? As of now I have created a separate Org and passed the install handler class and its associated test class into it..

How can I verify whether the handler script is running properly and the records of custom settings are properly inserted into it? Any thoughts please. Thanks.

Answer 1

Here is one (of many) test methods for an install handler in our code:

@IsTest
static void testAdls() {

    // Clear to make sure the value is set by the install handler
    Options__c cs = Options__c.getInstance();
    cs.ActivitiesOfDailyLiving__c = null;
    upsert cs;

    Test.testInstall(new ClaimsInstallHandler(), new Version(8, 5));

    // Custom setting is correctly defaulted
    System.assertNotEquals(null, Options__c.getInstance().ActivitiesOfDailyLiving__c);
}

This makes use of the Test.testInstall method.

Answer 2

You have to specify your install handler in your package, as described here. If you haven't done this before, you need to configure this and create a new package.

You mention a test unit class: I assume that it covers the behaviour of your install handler, and asserts that the custom settings have been instantiated. You can do this by calling the Test.testInstall () method.

When you have all of the above, you can also do a smoke test by installing the package in a fresh developer org and then verifying that your settings have been created.