def test_resizability(self):
"""Test that resizing slices works correctly."""
# By default, can't write beyond end of slice.
f = Slice(StringIO("mytestdata"), start=2, stop=6)
f.write("TE")
f.seek(0)
self.assertEquals(f.read(), "TEst")
self.assertEquals(f._fileobj.getvalue(), "myTEstdata")
f.seek(0)
self.assertRaises(IOError, f.write, "TESTDATA")
self.assertEquals(f._fileobj.getvalue(), "myTESTdata")
# Resizability allows data to be overwritten
f = Slice(StringIO("mytestdata"), start=2, stop=6, resizable=True)
f.write("TESTDA")
self.assertEquals(f._fileobj.getvalue(), "myTESTDAta")
self.assertEquals(f.stop, 8)
def test_resizability(self):
"""Test that resizing slices works correctly."""
# By default, can't write beyond end of slice.
f = Slice(StringIO("mytestdata"),start=2,stop=6)
f.write("TE")
f.seek(0)
self.assertEquals(f.read(),"TEst")
self.assertEquals(f._fileobj.getvalue(),"myTEstdata")
f.seek(0)
self.assertRaises(IOError,f.write,"TESTDATA")
self.assertEquals(f._fileobj.getvalue(),"myTESTdata")
# Resizability allows data to be overwritten
f = Slice(StringIO("mytestdata"),start=2,stop=6,resizable=True)
f.write("TESTDA")
self.assertEquals(f._fileobj.getvalue(),"myTESTDAta")
self.assertEquals(f.stop,8)
