- I've finally run the tests with OK result (56 tests in 102.937 sec)

- I had to play with module imports as they created a lot of error in
the tests although in reality the program worked OK.
- I've fixed some mistakes in TcL commands (they were testing isinstance
against the like of Geometry instead of FlatCAMGeometry)
- I've had to add some fixes in ObjectCollections.py (error on
create_index() method but Marco already fixed this in the checkbox
in project tab pull request and knew about this.
- Although at some point the tests run fine, I've made some checkings
on my own over the Tcl commands and discovered errors which I fixed as
mentioned above.
- conclusion is that tests are just a must and do not cover everything
(like saving projects which at some point by juggling with imports I
braked and tests were 100% OK)

tclCommands/TclCommand.py

@@ -5,6 +5,7 @@ import abc
 import collections
 from PyQt4 import QtCore
 from contextlib import contextmanager
+from FlatCAMObj import FlatCAMGerber, FlatCAMExcellon, FlatCAMGeometry, FlatCAMCNCjob, FlatCAMObj
 
 
 class TclCommand(object):

tclCommands/TclCommandAddCircle.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommand
+from tclCommands.TclCommand import *
 
 
 class TclCommandAddCircle(TclCommand):

tclCommands/TclCommandAddPolygon.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommandSignaled
+from tclCommands.TclCommand import *
 
 
 class TclCommandAddPolygon(TclCommandSignaled):

tclCommands/TclCommandAddPolyline.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommandSignaled
+from tclCommands.TclCommand import *
 
 
 class TclCommandAddPolyline(TclCommandSignaled):

tclCommands/TclCommandAddRectangle.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommandSignaled
+from tclCommands.TclCommand import *
 
 
 class TclCommandAddRectangle(TclCommandSignaled):

tclCommands/TclCommandAlignDrill.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommandSignaled
+from tclCommands.TclCommand import *
 
 
 class TclCommandAlignDrill(TclCommandSignaled):

tclCommands/TclCommandAlignDrillGrid.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommandSignaled
+from tclCommands.TclCommand import *
 
 
 class TclCommandAlignDrillGrid(TclCommandSignaled):

tclCommands/TclCommandCncjob.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommandSignaled
+from tclCommands.TclCommand import *
 
 
 class TclCommandCncjob(TclCommandSignaled):

tclCommands/TclCommandCutout.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommand
+from tclCommands.TclCommand import *
 
 
 class TclCommandCutout(TclCommand):

tclCommands/TclCommandDelete.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommand
+from tclCommands.TclCommand import *
 
 
 class TclCommandDelete(TclCommand):

tclCommands/TclCommandDrillcncjob.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommandSignaled
+from tclCommands.TclCommand import *
 
 
 class TclCommandDrillcncjob(TclCommandSignaled):

tclCommands/TclCommandExportGcode.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommandSignaled
+from tclCommands.TclCommand import *
 
 
 class TclCommandExportGcode(TclCommandSignaled):

tclCommands/TclCommandExportSVG.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommand
+from tclCommands.TclCommand import *
 
 
 class TclCommandExportSVG(TclCommand):

tclCommands/TclCommandExteriors.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommandSignaled
+from tclCommands.TclCommand import *
 
 
 class TclCommandExteriors(TclCommandSignaled):
@@ -54,7 +53,7 @@ class TclCommandExteriors(TclCommandSignaled):
         if obj is None:
             self.raise_tcl_error("Object not found: %s" % name)
 
-        if not isinstance(obj, Geometry):
+        if not isinstance(obj, FlatCAMGeometry):
             self.raise_tcl_error('Expected Geometry, got %s %s.' % (name, type(obj)))
 
         def geo_init(geo_obj, app_obj):

tclCommands/TclCommandGeoCutout.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommandSignaled
+from tclCommands.TclCommand import *
 
 
 class TclCommandGeoCutout(TclCommandSignaled):

tclCommands/TclCommandGeoUnion.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommand
+from tclCommands.TclCommand import *
 
 
 class TclCommandGeoUnion(TclCommand):

tclCommands/TclCommandGetNames.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommand
+from tclCommands.TclCommand import *
 
 
 class TclCommandGetNames(TclCommand):

tclCommands/TclCommandGetSys.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommand
+from tclCommands.TclCommand import *
 
 
 class TclCommandGetSys(TclCommand):

tclCommands/TclCommandImportSvg.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommandSignaled
+from tclCommands.TclCommand import *
 
 
 class TclCommandImportSvg(TclCommandSignaled):

tclCommands/TclCommandInteriors.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommandSignaled
+from tclCommands.TclCommand import *
 
 
 class TclCommandInteriors(TclCommandSignaled):

tclCommands/TclCommandIsolate.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommandSignaled
+from tclCommands.TclCommand import *
 
 
 class TclCommandIsolate(TclCommandSignaled):

tclCommands/TclCommandJoinExcellon.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommand
+from tclCommands.TclCommand import *
 
 
 class TclCommandJoinExcellon(TclCommand):

tclCommands/TclCommandJoinGeometry.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommand
+from tclCommands.TclCommand import *
 
 
 class TclCommandJoinGeometry(TclCommand):

tclCommands/TclCommandMillHoles.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommandSignaled
+from tclCommands.TclCommand import *
 
 
 class TclCommandMillHoles(TclCommandSignaled):

tclCommands/TclCommandMirror.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommandSignaled
+from tclCommands.TclCommand import *
 
 
 class TclCommandMirror(TclCommandSignaled):

tclCommands/TclCommandNew.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommand
+from tclCommands.TclCommand import *
 
 
 class TclCommandNew(TclCommand):

tclCommands/TclCommandNewGeometry.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommandSignaled
+from tclCommands.TclCommand import *
 
 
 class TclCommandNewGeometry(TclCommandSignaled):

tclCommands/TclCommandOffset.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommand
+from tclCommands.TclCommand import *
 
 
 class TclCommandOffset(TclCommand):

tclCommands/TclCommandOpenExcellon.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommandSignaled
+from tclCommands.TclCommand import *
 
 
 class TclCommandOpenExcellon(TclCommandSignaled):

tclCommands/TclCommandOpenGCode.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommandSignaled
+from tclCommands.TclCommand import *
 
 
 class TclCommandOpenGCode(TclCommandSignaled):

tclCommands/TclCommandOpenGerber.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommandSignaled
+from tclCommands.TclCommand import *
 
 
 class TclCommandOpenGerber(TclCommandSignaled):
@@ -48,7 +47,7 @@ class TclCommandOpenGerber(TclCommandSignaled):
         # How the object should be initialized
         def obj_init(gerber_obj, app_obj):
 
-            if not isinstance(gerber_obj, Geometry):
+            if not isinstance(gerber_obj, FlatCAMGerber):
                 self.raise_tcl_error('Expected FlatCAMGerber, got %s %s.' % (outname, type(gerber_obj)))
 
             # Opening the file happens here

tclCommands/TclCommandOpenProject.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommandSignaled
+from tclCommands.TclCommand import *
 
 
 class TclCommandOpenProject(TclCommandSignaled):

tclCommands/TclCommandOptions.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommandSignaled
+from tclCommands.TclCommand import *
 
 
 class TclCommandOptions(TclCommandSignaled):

tclCommands/TclCommandPaint.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommandSignaled
+from tclCommands.TclCommand import *
 
 
 class TclCommandPaint(TclCommandSignaled):

tclCommands/TclCommandPanelize.py

@@ -1,7 +1,5 @@
-from ObjectCollection import *
 from copy import copy,deepcopy
-
-from tclCommands.TclCommand import TclCommand
+from tclCommands.TclCommand import *
 
 
 class TclCommandPanelize(TclCommand):

tclCommands/TclCommandPlot.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommand
+from tclCommands.TclCommand import *
 
 
 class TclCommandPlot(TclCommand):

tclCommands/TclCommandSaveProject.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommandSignaled
+from tclCommands.TclCommand import *
 
 
 class TclCommandSaveProject(TclCommandSignaled):

tclCommands/TclCommandScale.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommand
+from tclCommands.TclCommand import *
 
 
 class TclCommandScale(TclCommand):

tclCommands/TclCommandSetActive.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommand
+from tclCommands.TclCommand import *
 
 
 class TclCommandSetActive(TclCommand):

tclCommands/TclCommandSetSys.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommand
+from tclCommands.TclCommand import *
 
 
 class TclCommandSetSys(TclCommand):

tclCommands/TclCommandSubtractPoly.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommandSignaled
+from tclCommands.TclCommand import *
 
 
 class TclCommandSubtractPoly(TclCommandSignaled):

tclCommands/TclCommandSubtractRectangle.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommandSignaled
+from tclCommands.TclCommand import *
 
 
 class TclCommandSubtractRectangle(TclCommandSignaled):

tclCommands/TclCommandVersion.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommand
+from tclCommands.TclCommand import *
 
 
 class TclCommandVersion(TclCommand):

tclCommands/TclCommandWriteGCode.py

@@ -1,5 +1,4 @@
-from ObjectCollection import *
-from tclCommands.TclCommand import TclCommandSignaled
+from tclCommands.TclCommand import *
 
 
 class TclCommandWriteGCode(TclCommandSignaled):