#Trailmix0 discussing

Hello @Anthony DiGangi, 

You can troubleshoot this issue at the below places:

- Field-Level Security: Verify that the user has access to the fields they need. Go to Setup > Profiles or Permission Sets > Field Permissions, and ensure fields are marked as "Visible." 

- Profile Settings: Go to the user's profile to ensure they have the required "Read," "Create," "Edit," or "Delete" object permissions. Navigate to Setup > Profiles > [User's Profile] > Object Settings, and check the custom object permissions. 

- App Settings: Ensure the custom object is added to the app they use. Go to Setup > App Manager > [App Name] > Edit > Navigation Items, and include the object using the associated tab name. 

Hope this will help you!

It seems that you're facing an issue with the test method in your @isTest class, particularly while iterating over a custom Iterable in the for loop. However, the code you've provided appears to be mostly correct, but there are a few potential areas where problems could arise. Let's walk through the code and provide some advice on possible fixes.

@isTest
public class MyIterableTest {
    @isTest
    private static void testIterableForLoop() {
        Test.startTest();
        // Prepare test data
        List<String> strings = new List<String> {'Hello', 'World'};
        // Create an instance of your custom Iterable
        MyIterable myIterable = new MyIterable(strings);
        // Iterate over the custom Iterable
        for (String str : myIterable) {
            System.debug(str);  // This should print 'Hello' and 'World'
        }
        Test.stopTest();
    }
}

Key Points to Check:

Custom Iterable Implementation (MyIterable Class):

1. The issue most likely lies within the MyIterable class, as it's a custom class you're using for iteration.
2. Ensure that MyIterable implements Iterable correctly and that it's properly constructed. Here's a sample of what your MyIterable class might look like.

Example of a Full Working Solution:

// Custom Iterable Class
public class MyIterable implements Iterable<String> {
    private List<String> data;
    // Constructor that takes a List of Strings
    public MyIterable(List<String> data) {
        this.data = data;
    }
    // Implement the iterator method to return the list iterator
    public Iterator<String> iterator() {
        return data.iterator();
    }
}
// Test Class
@isTest
public class MyIterableTest {
    @isTest
    private static void testIterableForLoop() {
        Test.startTest();
        // Prepare the test data
        List<String> strings = new List<String> {'Hello', 'World'};
        // Create an instance of MyIterable
        MyIterable myIterable = new MyIterable(strings);
        // Iterate over the iterable
        for (String str : myIterable) {
            System.debug(str);  // Expected to print 'Hello' and 'World'
        }
        Test.stopTest();
    }
}

The issue you're facing likely revolves around the implementation of your MyIterable class and its iterator() method. Make sure that the class implements the Iterable interface properly and that the iterator() method returns a valid iterator (e.g., from a List). The test method itself looks fine, but the class that you're testing might have some issues. Once you ensure proper implementation of the iterable logic, your test should pass successfully.

If you think this helps please mark Answer as Useful so that it will help others as well

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@Valentine Muriuki you can create your own trailmix. That way you have your own list of modules or trails tailored to your specific needs. Look for modules on Trailhead and find the button to Add to Trailmix. Then you can Add to New Trailmix to create your own.

Hope that helps. If it does, feel free to click the Accept this answer button.