Cropping of individual exos

tests/test_gui_convenience.py

@@ -68,6 +68,24 @@ class GuiConvenienceTests(unittest.TestCase):
         self.app._skip_step()
         self.assertEqual(self.app.state_store.step("crop_blank_margins")["status"], "skipped")
 
+    def test_optional_answer_bottom_crop_uses_parallel_workers_and_can_be_skipped(self):
+        answers = self.evaluation / "Copies" / "Copie01"
+        answers.mkdir(parents=True)
+        (answers / "Ex 1.pdf").touch()
+        self.app.tree.selection_set("crop_exercise_bottoms")
+        self.app.update()
+        self.assertEqual(self.app.current_step.id, "crop_exercise_bottoms")
+        self.assertEqual(str(self.app.skip_button.cget("state")), "normal")
+        command = self.app._make_command()
+        self.assertEqual(
+            command[-4:],
+            ["crop-answer-bottoms", self.app._evaluation_arg(), "--workers", "5"],
+        )
+        self.app._skip_step()
+        self.assertEqual(
+            self.app.state_store.step("crop_exercise_bottoms")["status"], "skipped"
+        )
+
     def test_redo_targets_selected_copy_and_copies_runnable_command(self):
         for folder in ("Copies", "Copies Originales"):
             (self.evaluation / folder).mkdir()