Datetime field name missing from validation error message

Applied MR !3838. The fieldname is displaying in the error message after applying this patch.

Attaching screenshots below.

Before patch:

After patch:

Next step would be to add tests showing the issue.

Added tests.

Think the test should check the entire message. The fact the message changed and didn't break anything probably showed it wasn't being tested to begin with.

The date format value in the error message is a dynamic one(The Field_label date is required. Please enter a date in the format 2023-05-10 05:19:38.), and the date format value is created on the basis of when the validateDatetime function is calling.

So I have added one more assertion to verify date format value is not empty and is in the following format "YYYY-MM-DD HH:MM:SS".
$this->assertMatchesRegularExpression('/^(\d{4})-(\d{2})-(\d{2}) (\d{2}):(\d{2}):(\d{2})$/', $arguments['%format']);

#9 looks like a good fix for the missing test coverage.

Committed 1aaa480b07 and pushed to 11.x. Thanks!

Automatically closed - issue fixed for 2 weeks with no activity.