Also fix the name of certain functions.
Do not import `DraftFillet` any more as it's just kept
for compatibility purposes.
Do not test OCA nor AirfoilDAT as it's very improbable
that these formats will gain more support any time soon.
Those unit tests that are registered in `Init.py` will always run,
while those that are registerd in `InitGui.py` will only run
when the graphical interface is available.
This allows us to more clearly distinguish functions that
should be able to run always, from those that may run only
when the interfce is available.
This means that now the unit tests will run from
the console mode when using
```
FreeCADCmd -t 0
FreeCAD --console -t 0
```
This will allow us to catch errors more easily,
as we separate better the behavior of non-GUI
and GUI-required modules.
Also small spacing fixes and position of the license.
Only 50 test are really performed.
Some tests are not fully implemented, for example, arc_3points, dimension_radial,
shapestring, trim, extend, and stretch. The reason is that there are no proper
functions to test.
In order to have a unit test, basic functions that perform these actions
must be written inside Draft.py. At the moment, these tests just
run a _fake_function() which always returns successfully
and thus the test always passes without problem.
There are also tests for the import and export
of SVG, DXF, DWG, and OCA files. Currently these are also not implemented.
Sample files could be provided in the source tree in order to test basic operations
like opening, import, and export.
A complete unit test would require writing a test for each geometrical element
that could be imported and exported, that is, line, circle, arc, rectangle, etc.
These tests are inspired by the tests in the FEM workbench.
Import of modules is tested, as well as the creation and modification tools.
Eventually, the tests should be migrated to individual modules,
and test files should be provided to serve as reference.
After changing the name from DWire to Wire the test fails, because an element with the name DWire does not exists.
The name change came in with commit "917b5a505e8d5798a05c3c05cc7b4e052b2d05d5"
in file "src\Mod\Draft\Draft.py"
