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

tests/test_tclCommands/test_TclCommandInteriors.py

@@ -0,0 +1,24 @@
+from FlatCAMObj import FlatCAMGerber, FlatCAMGeometry
+
+
+def test_interiors(self):
+    """
+    Test interiors
+    :param self:
+    :return:
+    """
+
+    self.fc.exec_command_test('open_gerber %s/%s -outname %s'
+                              % (self.gerber_files, self.cutout_filename, self.gerber_cutout_name))
+    gerber_cutout_obj = self.fc.collection.get_by_name(self.gerber_cutout_name)
+    self.assertTrue(isinstance(gerber_cutout_obj, FlatCAMGerber), "Expected FlatCAMGerber, instead, %s is %s"
+                    % (self.gerber_cutout_name, type(gerber_cutout_obj)))
+
+    # interiors and delete isolated traces
+    self.fc.exec_command_test('isolate %s -dia %f' % (self.gerber_cutout_name, self.engraver_diameter))
+    self.fc.exec_command_test('interiors %s -outname %s'
+                              % (self.gerber_cutout_name + '_iso', self.gerber_cutout_name + '_iso_interior'))
+    self.fc.exec_command_test('delete %s' % (self.gerber_cutout_name + '_iso'))
+    obj = self.fc.collection.get_by_name(self.gerber_cutout_name + '_iso_interior')
+    self.assertTrue(isinstance(obj, FlatCAMGeometry), "Expected FlatCAMGeometry, instead, %s is %s"
+                    % (self.gerber_cutout_name + '_iso_interior', type(obj)))