James Wettenhall f5aca9d312 Destroying each FloatCanvas instance before tearDown avoids exceptions like ...

this:

wx/lib/floatcanvas/FCObjects.py, line 746, in _Draw
    dc.DrawLines(Points)
TypeError: DC.DrawLines(): argument 1 has unexpected type 'numpy.ndarray'

There's a lot of code duplication between test methods in this class.
It might be better to replace each "fccanvas" with "self.fccanvas", and then
do the common tearDown stuff like "self.fccanvas.Destroy()" in one place.
However, this commit aims to make minimal changes, hencing avoiding replacing
all instances of "fccanvas" with "self.fccanvas"

2017-03-23 22:01:06 +11:00

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