Bnot fixes ; Missing énoncés fixes.

tests/test_add_final_score.py

@@ -12,6 +12,32 @@ from copienator.commands import add_final_score
 
 
 class AddFinalScoreTests(unittest.TestCase):
+    def test_merged_histogram_is_copied_only_when_selected(self):
+        with tempfile.TemporaryDirectory() as temporary:
+            root = Path(temporary)
+            histogram = root / 'Staging/histogramme.pdf'
+            histogram.parent.mkdir()
+            histogram.write_bytes(b'histogram')
+            merged = histogram.with_name('merged_histogramme.pdf')
+            merged.write_bytes(b'merged')
+            output = root / 'output'
+            output.mkdir()
+            with patch.object(add_final_score, 'HISTOGRAM_PATH', histogram):
+                add_final_score.copy_histogram(output)
+                self.assertFalse((output / merged.name).exists())
+                add_final_score.copy_histogram(output, copy_merged_histogramme=True)
+            self.assertEqual((output / 'histogramme.pdf').read_bytes(), b'histogram')
+            self.assertEqual((output / merged.name).read_bytes(), b'merged')
+
+    def test_cli_forwards_merged_histogram_option(self):
+        with tempfile.TemporaryDirectory() as temporary:
+            root = Path(temporary)
+            with patch.object(add_final_score, 'OUTPUT_DIR', root / 'output'), patch.object(
+                add_final_score, 'process_images'
+            ) as process:
+                self.assertEqual(add_final_score.main([str(root), '--copy-merged-histogramme']), 0)
+            process.assert_called_once_with(root, root / 'output' / root.name, copy_merged_histogramme=True)
+
     def test_creates_complete_student_directory(self):
         with tempfile.TemporaryDirectory() as temporary:
             root = Path(temporary)