Make workflow accessible via application

Created by: stefanoborini

Provides access to the workflow via the application. This is required because the envisage plugins (and thus the factories) have convenient access to the application, but not to other plugins, where the workflow is actually loaded.

force_bdss/tests/test_bdss_application.py

@@ -8,6 +8,8 @@ from force_bdss.bdss_application import (
     _load_failure_callback,
     _import_extensions
 )
+from force_bdss.core.workflow import Workflow
+from force_bdss.tests import fixtures
 
 try:
     import mock
@@ -48,3 +50,18 @@ class TestBDSSApplication(unittest.TestCase):
         _import_extensions(plugins, ext)
 
         self.assertEqual(plugins[0], plugin)
+
+    def test_workflow(self):
+        with testfixtures.LogCapture():
+            with warnings.catch_warnings():
+                warnings.simplefilter("ignore")
+                app = BDSSApplication(False, fixtures.get("test_empty.json"))
+
+        self.assertIsInstance(app.workflow, Workflow)
+
+        with testfixtures.LogCapture():
+            with warnings.catch_warnings():
+                warnings.simplefilter("ignore")
+                app = BDSSApplication(True, fixtures.get("test_empty.json"))
+
+        self.assertIsInstance(app.workflow, Workflow)