calling ert from a script

[Richard H Lee <ricardohenrylee@gmail.com>]

I'm using ert for unit testing currently.

I know you can call ert interactively to run all defined tests. When you 
do so tests pass and fail as expected.

I have a script that clears existing tests, reloads the file under test 
and the tests themselves and then runs the tests. The way I run the 
tests is by calling (ert t) . This is the same thing that is called when 
you call ert interactively.

However when I call (ert t) from a script, rather than passing and 
failing tests, it aborts at the first failure, not running any further 
tests. (And it returns with an eval error saying that the test failed.)

Can anybody tell me why this happens?