see if reloading the full module works

tests/test_broken_imports.py

@@ -58,11 +58,12 @@ def test_missing_matplotlib(self):
                 import matplotlib
             # force reload 
             # check if we can still import pytom_tm
-            pytom_tm = reload(pytom_tm)
-
-            # check if plotting is indeed disabled
-            self.assertFalse(pytom_tm.template.plotting_available)
-            self.assertFalse(pytom_tm.extract.plotting_available)
+            reload(pytom_tm)
+
+            # check if plotting is indeed disabled after reload
+            # (reload is needed to prevent python import caching)
+            self.assertFalse(reload(pytom_tm.template).plotting_available)
+            self.assertFalse(reload(pytom_tm.extract).plotting_available)
             # assert that importing the plotting module fails completely
             with self.assertRaisesRegex(RuntimeError, "matplotlib and seaborn"):
                 import pytom_tm.plotting
@@ -74,10 +75,11 @@ def test_missing_seaborn(self):
             with self.assertRaisesRegex(ModuleNotFoundError, 'seaborn'):
                 import seaborn
             # check if we can still import pytom_tm
-            pytom_tm = reload(pytom_tm)
+            reload(pytom_tm)
             # check if plotting is indeed disabled
-            self.assertFalse(pytom_tm.template.plotting_available)
-            self.assertFalse(pytom_tm.extract.plotting_available)
+            # (reload is needed to prevent python import caching)
+            self.assertFalse(reload(pytom_tm.template).plotting_available)
+            self.assertFalse(reload(pytom_tm.extract).plotting_available)
             # assert that importing the plotting module fails completely
             with self.assertRaisesRegex(RuntimeError, "matplotlib and seaborn"):
                 import pytom_tm.plotting