Add widget test cases

I did have to modify the sample generator case for uri, as it was randomly generating invalid values for a uri field.

There are some TODO items that I wasn't able to resolve today:

1. Floating point comparison is always a pain in computer science.
2. Color values don't seem to be saving properly via Drupal's testing API.
3. Testing map values requires a bit more code -- easy enough, just no more time today.

Honestly though, I'm of the school that imperfect testing is a thousand times better than no testing, so we might even consider merging with known shortcomings and addressing them in follow-ups. This work should unblock https://www.drupal.org/project/custom_field/issues/3379730 🐛 Multi-value fields not working properly within Layout Builder Fixed .

Let's see what the test bot thinks!

Update configuration from latest 1.0.x-dev.

Add interdiff

This is no longer relevant with 📌 Simplify generateSampleValue() by leveraging new generator service. Fixed merged.

diff --git a/src/Plugin/Field/FieldType/CustomItem.php b/src/Plugin/Field/FieldType/CustomItem.php
index 247adeb..c0ff0ce 100755
--- a/src/Plugin/Field/FieldType/CustomItem.php
+++ b/src/Plugin/Field/FieldType/CustomItem.php
@@ -344,7 +344,7 @@ class CustomItem extends FieldItemBase {
           break;
 
         case 'uri':
-          $values[$item['name']] = 'http://www.' . $random->string() . '.com';
+          $values[$item['name']] = 'http://www.' . $random->name() . '.com';
           break;

Adjusted for changes made in https://www.drupal.org/project/custom_field/issues/3379800 📌 Simplify generateSampleValue() by leveraging new generator service. Fixed . Also ran code-sniffer -- let's see what the bot thinks.