Draft: move the TestDraft unit tests to separate modules

This results in better organization of the tests,
avoiding extremely big files.

src/Mod/Draft/drafttests/test_import.py

@@ -0,0 +1,61 @@
+"""Unit test for the Draft module, import tests.
+"""
+# ***************************************************************************
+# *   (c) 2013 Yorik van Havre <yorik@uncreated.net>                        *
+# *   (c) 2019 Eliud Cabrera Castillo <e.cabrera-castillo@tum.de>           *
+# *                                                                         *
+# *   This file is part of the FreeCAD CAx development system.              *
+# *                                                                         *
+# *   This program is free software; you can redistribute it and/or modify  *
+# *   it under the terms of the GNU Lesser General Public License (LGPL)    *
+# *   as published by the Free Software Foundation; either version 2 of     *
+# *   the License, or (at your option) any later version.                   *
+# *   for detail see the LICENCE text file.                                 *
+# *                                                                         *
+# *   FreeCAD is distributed in the hope that it will be useful,            *
+# *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+# *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+# *   GNU Library General Public License for more details.                  *
+# *                                                                         *
+# *   You should have received a copy of the GNU Library General Public     *
+# *   License along with FreeCAD; if not, write to the Free Software        *
+# *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  *
+# *   USA                                                                   *
+# *                                                                         *
+# ***************************************************************************
+
+import unittest
+from .auxiliary import _draw_header
+from .auxiliary import _import_test
+
+
+class DraftImport(unittest.TestCase):
+    """Import the Draft modules."""
+    # No document is needed to test 'import Draft' or other modules
+    # thus 'setUp' just draws a line, and 'tearDown' isn't defined.
+    def setUp(self):
+        _draw_header()
+
+    def test_import_draft(self):
+        """Import the Draft module."""
+        module = "Draft"
+        imported = _import_test(module)
+        self.assertTrue(imported, "Problem importing '{}'".format(module))
+
+    def test_import_draft_geomutils(self):
+        """Import Draft geometrical utilities."""
+        module = "DraftGeomUtils"
+        imported = _import_test(module)
+        self.assertTrue(imported, "Problem importing '{}'".format(module))
+
+    def test_import_draft_vecutils(self):
+        """Import Draft vector utilities."""
+        module = "DraftVecUtils"
+        imported = _import_test(module)
+        self.assertTrue(imported, "Problem importing '{}'".format(module))
+
+    def test_import_draft_svg(self):
+        """Import Draft SVG utilities."""
+        module = "getSVG"
+        imported = _import_test(module)
+        self.assertTrue(imported, "Problem importing '{}'".format(module))