Write (arrange) Act and Assert in your automatic tests
It is a good custom to write out Act and Assert in test as it helps to write the test in a clean way; and helps the next reader to understand where Arrange stops and Act begins. It helps the writer to not involuntarily write Act statements in Assert.
Like so:
myTest()
sut = setup()
// Act.
sut.do()
// Assert.
assert(sut.value).equals(12)
The above code is too simple to make the upside of this coding standard visible but soon tests get a few lines long and commentning Act and Assert is a good idea.
I don’t bother to write out // Arrange any more as all tests start with Arrange anyway.
Well… that was not true. I have stumbled upon tests with several Arrange, Act and Assert in them. Typically for integration tests.