Deployment causes Apex Test Failures

[freytagt]

We succesfully deployed the connector to a sandbox.
But as we wanted to go on deploying to other testing instances we noticed there are a lot of errors coming in.
I'm expecting that some are subsequently, but they need to be fixed anyway.

In B2CAUthTokenHelper_Test Class the testGetB2CAuthTokenByClientIDValueSuccess fails with the error message "System.AssertException: Assertion Failed: Expected a valid authToken to be returned".

Also the Class QueryTest multiple times e.g. the method groupByTest with the message:
"System.DmlException: Insert failed. First exception on row 0; first error: CANNOT_INSERT_UPDATE_ACTIVATE_ENTITY, AccountTrigger: execution of AfterUpdate
caused by: System.NullPointerException: Attempt to de-reference a null object
Class.Account_Handler.afterUpdate: line 107, column 1
Class.TriggerHandler.run: line 68, column 1
Trigger.AccountTrigger: line 8, column 1: []"

Does somebody has the same issues when running the tests or better, can anybody help?

These errors need to be fixed otherwise I can't deploy to production instance.

[dturkelFerguson]

Regarding your first error in B2CAUthTokenHelper_Test Class the testGetB2CAuthTokenByClientIDValueSuccess...

We had similar issues due to the user executing tests not having the permissionsetgroup assignment giving them the correct access to manipulate the B2C_Client_ID__c. The test wasn't failing on the INSERT for some reason, but it also wasn't getting the necessary ID to do the lookup within the Start/Stop test block.

We had to alter the test to build a user with the assignment and then Run As that user... That seems like something that should be part of the code base.