Doesn't unittest already cover this? with self.assertRaisesRegexp(OSError, '^foobar$'): do_something() On Tue, Feb 24, 2015 at 5:43 PM, Ionel Cristian Mărieș <contact@ionelmc.ro> wrote:
Hey everyone,
I was writing a test the other day and I wanted to assert that some function raises some exception, but with some exact value. Turns out you cannot compare OSError("foobar") to OSError("foobar") as it doesn't have any __eq__. (it's the same for all exceptions?)
I think exceptions are great candidates to have an __eq__ method - they already have a __hash__ (that's computed from the contained values) and they are already containers in a way (they all have the `args` attribute).
Comparing exceptions in a test assertion seems like a good usecase for this.
Thanks, -- Ionel Cristian Mărieș, blog.ionelmc.ro
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