On Saturday, 4 August 2012 at 22:09:03 UTC, Jonathan M Davis
wrote:
On Sunday, August 05, 2012 00:00:24 Maxime Chevalier wrote:
How does unittest check for success/failure? Does assert throw
a
special kind of error class when it fails? How would you check
that some code didn't throw an exception, or did throw an
exception?
assert throws an AssertError. The unittest failed message is
its message, so
if it's never thrown, then you won't get that message. And if
an exception is
thrown, then the assertion won't fail, so no AssertError will
be thrown, just
the exception that your function threw.
A failed unit test really just means that a unit test block is
left via an exception. Currently, it just bubbles up to the
druntime main(), where it is printed to console and causes a
non-zero exit code, but future unit test frameworks could handle
this in a more advanced way.
David
