Regarding the classic test pattern of Arrange-Act-Assert, I frequently find myself adding a counter-assertion that precedes Act. This way I know that the passing assertion
I am now doing this. A-A-A-A of a different kind
Arrange - setup
Act - what is being tested
Assemble - what is optionally needed to perform the assert
Assert - the actual assertions
Example of an update test:
Arrange:
New object as NewObject
Set properties of NewObject
Save the NewObject
Read the object as ReadObject
Act:
Change the ReadObject
Save the ReadObject
Assemble:
Read the object as ReadUpdated
Assert:
Compare ReadUpdated with ReadObject properties
The reason is so that the ACT does not contain the reading of the ReadUpdated is because it is not part of the act. The act is only changing and saving. So really, ARRANGE ReadUpdated for assertion, I am calling ASSEMBLE for assertion. This is to prevent confusing the ARRANGE section
ASSERT should only contain assertions. That leaves ASSEMBLE between ACT and ASSERT which sets up the assert.
Lastly, if you are failing in the Arrange, your tests are not correct because you should have other tests to prevent/find these trivial bugs. Because for the scenario i present, there should already be other tests which test READ and CREATE. If you create a "Guard Assertion", you may be breaking DRY and creating maintenance.