The standard test class Milestone1_Email_Handler_Tst is causing problems when I attempt to deploy new code to our production system.
System.AssertException: Assertion Failed
Stack Trace: Class.Milestone1_Email_Handler_Tst.testEmailWithAttachments: line 104, column 1
System.AssertException: Assertion Failed
Stack Trace: Class.Milestone1_Email_Handler_Tst.testNoAliasWithDefaultMilestoneAlias: line 310, column 1
I've tried resolving the code errors but cannot seem to do so due to this same error. I've also attempted just deleting it to re-add it at a later time.
I cannot do either of these things as it runs the test as part of the deployment process and fails the whole process.
How can I make changes, or remove a malfunctioning test class in production?