tests: Add tests for BaseODS.add_annotation().

tests/test_reports_spreadsheet.py

@@ -782,3 +782,23 @@ def test_ods_writer_common_command(ods_writer):
     ods_writer.set_common_properties(command=['testcmd', 'testarg*'])
     cmd_prop = get_child(ods_writer.document.meta, odf.meta.UserDefined, name='ReportCommand')
     assert cmd_prop.text == 'testcmd \'testarg*\''
+
+@pytest.mark.parametrize('text,when,parent', itertools.product(
+    [None, 'comment text'],
+    [None, datetime.datetime.now()],
+    [True, False],
+))
+def test_ods_add_annotation(ods_writer, text, when, parent):
+    start_time = datetime.datetime.now()
+    parent = odf.table.TableCell() if parent else None
+    actual = ods_writer.add_annotation(text, when, parent)
+    if text is None:
+        assert actual.firstChild is actual.lastChild
+    else:
+        assert actual.lastChild.text == text
+    if when is None:
+        assert actual.firstChild.text >= start_time.isoformat(timespec='seconds')
+    else:
+        assert actual.firstChild.text == when.isoformat(timespec='seconds')
+    if parent is not None:
+        assert parent.lastChild is actual