What happens when you throw in a print(obj.__dict__[field]) before the val
assignment? You should see on the console what value each iteration of the
loop is using and see if you have a strange attribute that is throwing
things out of kilter.
-James
On Feb 24, 2015 8:33 PM, "Mike Dewhirst" <mi...@dewhirst.com.au> wrote:
> This is driving me insane so any hints will be greatly appreciated ...
>
> Thanks
>
> Mike
>
> Here is the entire unedited test sequence plus failing code ...
>
> Python: 3.4
> Django: 1.6.9
> SQLite3: memory
>
> Creating test database for alias 'default'...
> .E.E...
> ======================================================================
> ERROR: test_checkreference_exp (substance.tests.test_
> substance.TestSubstance)
> ----------------------------------------------------------------------
> Traceback (most recent call last):
> File "C:\Users\mike\env\xxdx3\ssds\substance\tests\test_substance.py",
> line 57, in test_checkreference_exp
> self.assertEqual(subst.checkreference('1'), True)
> File "C:\Users\mike\env\xxdx3\ssds\substance\models\substance.py", line
> 449, in checkreference
> if checkit(self, ref):
> File "C:\Users\mike\env\xxdx3\ssds\substance\models\substance.py", line
> 441, in checkit
> val = u"{0}".format(obj.__dict__[field])
> TypeError: __str__ returned non-string (type bytes)
>
> ======================================================================
> ERROR: testcheckreference_gas (substance.tests.test_
> substance.TestSubstance)
> ----------------------------------------------------------------------
> Traceback (most recent call last):
> File "C:\Users\mike\env\xxdx3\ssds\substance\tests\test_substance.py",
> line 75, in test_checkreference_gas
> self.assertEqual(subst.checkreference('1'.encode('utf-8')), True)
> File "C:\Users\mike\env\xxdx3\ssds\substance\models\substance.py", line
> 449, in checkreference
> if checkit(self, ref):
> File "C:\Users\mike\env\xxdx3\ssds\substance\models\substance.py", line
> 441, in checkit
> val = u"{0}".format(obj.__dict__[field])
> TypeError: __str__ returned non-string (type bytes)
>
> ----------------------------------------------------------------------
> Ran 7 tests in 1.281s
>
> FAILED (errors=2)
> Destroying test database for alias 'default'...
>
> So here is the method in the substance model. The idea is that we check to
> see if the user included a bracketed reference in any field of substance or
> any field of a related object. I'll chop out the middle of the method to
> save space.
>
> def checkreference(self, ref):
> """Check all potential char fields for ref in square brackets eg
> [1]
>
> Give up as soon as it is found. Otherwise raise validation error.
> """
> def checkit(obj, ref):
> """Return True immediately but don't return False unless all
> fields have been checked."""
> for field in obj.__dict__:
> val = u"{0}".format(obj.__dict__[field])
> if ref in val:
> return True
>
> assert(ref)
> ref = "[{0}]".format(ref)
> # first check self - the substance itself
> if checkit(self, ref):
> return True
> # now each of the 1:1 and 1:n objects
> try:
> obj = Solid.objects.get(substance=self)
> if checkit(obj, ref):
> return True
> except Solid.DoesNotExist:
> pass
> <snip lots of similar try/except blocks>
> raise ValidationError("Reference {0} does not appear in any "
> "field".format(ref))
>
> ... and here is one of the tests (line 57 in the traceback) in error ...
>
> def test_checkreference_exp(self):
> subst = Substance.objects.get(name="Hazsub")
> exp, c = Explosive.objects.get_or_create(substance=subst)
> exp.compatibility = '[1]'
> exp.save()
> self.assertEqual(subst.checkreference('1'), True)
>
>
>
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