Unit Testing A Function

Steve Jones walks through a practical example of unit testing T-SQL with tsqlt:

However I wanted to add some tests. Does this really work? What if I don’t have a backslash? I thought the best way to do this was with a few tSQLt tests, which I quickly built. The entire process was 5-10 minutes, which isn’t a lot longer than if I had been running random tests myself with a variety of strings.

The advantage of tests is that if I come up with a new case, or another potential bug, I copy the test over, change the string and I have a new test, plus all the regressions. I’m not depending on my memory to run the test cases.

I first put the code in a function, which makes it easier to test.

tsqlt is a great tool for database unit testing.

Related Posts

Isolation Levels and Dynamic SQL

Max Vernon points out how transaction isolation levels work when combined with sp_executesql: Imagine you have a piece of code where you don’t care about the downsides to the “read uncommitted” isolation level, and do your due diligence by adding SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED; at the start of your code. The code following that statement […]

Read More

Reading SQL Server Error Logs

Thomas Rushton has a script for us: Why Script This? What’s Wrong With SSMS’s GUI?Well, although SSMS does allow you to look at the error logs, it’s not very helpful for filtering – you can only filter for items that match, rather than exclude items. There are a few other filters as well – I […]

Read More

Categories

February 2016
MTWTFSS
« Jan Mar »
1234567
891011121314
15161718192021
22232425262728
29