How can I use the “@isTest” annotation to ensure my trigger should behave properly in various scenarios?

 In the context of Salesforce, you can ensure the correct behavior of the apex trigger in various scenarios by using the “@isTest” annotation in Salesforce. Here is how you can do so:-

@isTest

Public class TestMyTrigger {

    @testSetup

    Static void setupTestData() {

        // Create test data setup here

    }

    @isTest

    Static void testTriggerScenario1() {

        // Test scenario 1: Inventory level is sufficient, no notifications should be sent

        // Create test data representing scenario 1

        // Invoke the trigger

        // Verify that no notifications are sent

        System.assert(true); // Placeholder assertion

    }

    @isTest

    Static void testTriggerScenario2() {

        // Test scenario 2: Inventory level is low, notifications should be sent

        // Create test data representing scenario 2

        // Invoke the trigger

        // Verify that notifications are sent

        System.assert(true); // Placeholder assertion

    }

    // Additional test methods for other scenarios

}