Hi,
I am running a test file (using ExUnit.Case) which has for example around 10 tests in it. However, each time I run it, different number of them are fired. Sometimes it’s just 4 and sometimes 7.
I can’t find a reason for it. I will be grateful for help.
Hard to say without the test output, but are there any tests that stop the BEAM instance? (e.g. System.exit
) This would cause ExUnit to stop as well. Try running mix test ––trace
, this should hint at which test causes the issue.
The reason why it‘s a different number of tests executed each time is that tests are executed in a random order. You can see the seed used in the output, something like Randomized with seed <seed>
. You can rerun the tests with the same seed: mix test ––seed <seed>
.