Cleaned up tests for shell. Added test steps for gerber flow.

tests/test_tclCommands/test_TclCommandCncjob.py

@@ -0,0 +1,17 @@
+from FlatCAMObj import FlatCAMGerber, FlatCAMGeometry, FlatCAMObj
+from test_TclCommandIsolate import *
+
+def test_cncjob(self):
+    """
+    Test cncjob
+    :param self:
+    :return:
+    """
+
+    # reuse isolate tests
+    test_isolate(self)
+
+    self.fc.exec_command_test('cncjob %s_iso -tooldia 0.5 -z_cut 0.05 -z_move 3 -feedrate 300' % self.gerber_top_name)
+    cam_top_obj = self.fc.collection.get_by_name(self.gerber_top_name + '_iso_cnc')
+    self.assertTrue(isinstance(cam_top_obj, FlatCAMObj), "Expected FlatCAMObj, instead, %s is %s"
+                    % (self.gerber_top_name + '_iso_cnc', type(cam_top_obj)))