- remove redundant parentheses
- simplify string for warning
- make _is_binary_signature protected
- remove unused imports
- fixed whitespace and capitalization in tests
Signed-off-by: Stefan Marr <git@stefan-marr.de>

The classes were not put into the globals dictionary and got loaded more than once, which lead to the classes being not equal to each other.
Signed-off-by: Stefan Marr <git@stefan-marr.de>

Signed-off-by: Stefan Marr <git@stefan-marr.de>

Signed-off-by: Stefan Marr <git@stefan-marr.de>

a pytest is shipped with rpython and typically used there

Signed-off-by: Stefan Marr <git@stefan-marr.de>

- the same as for SOM and TruffleSOM
Signed-off-by: Stefan Marr <git@stefan-marr.de>

Signed-off-by: Stefan Marr <git@stefan-marr.de>

Signed-off-by: Stefan Marr <git@stefan-marr.de>

- fixed imports of basic interpreter tests
- initializing first elements of object system
Signed-off-by: Stefan Marr <git@stefan-marr.de>

- step by step, driven by missing functionality of the basic unit tests
Signed-off-by: Stefan Marr <git@stefan-marr.de>

- this includes parameterized, a module for paramterized tests, see https://github.com/wolever/nose-parameterized/ and top of parameterized.py for details
Signed-off-by: Stefan Marr <git@stefan-marr.de>