Removed duplicate assignment.

--HG--
branch : 1.8
assert_equals_file_contents() removed use compare_xml() instead.

--HG--
branch : 1.8
Renamed to match NamedTuple implementation.

--HG--
branch : 1.8
Method renamed to be more natural English but alias of the old name preserved.

--HG--
branch : 1.8
Use standard reader for validation to make test less dependent upon the implementation of the iterative reader.

--HG--
branch : 1.8
Add test to check whether the correct backend is being used.

--HG--
branch : 1.8