feat(reports): sort exported breakdown tables

apps/reports/tests/test_exporters.py

@@ -7,6 +7,7 @@ from apps.reports.services.export_i18n import build_export_locale
 from apps.reports.services.exporters import (
     _pdf_summary_rate_label,
     _rate_label,
+    _sort_breakdown_rows,
     build_excel_report,
     build_pdf_report,
 )
@@ -133,6 +134,23 @@ class ReportExporterTests(TestCase):
             "Variable rate",
         )
 
+    def test_breakdown_rows_are_sorted_by_hour_percentage(self):
+        rows = [
+            {"id": "low", "name": "Low", "billable_seconds": 7200},
+            {"id": "high", "name": "High", "billable_seconds": 3600},
+            {"id": "tie", "name": "Tie", "billable_seconds": 10800},
+        ]
+        percentages = [
+            {"id": "low", "name": "Low", "percentage": "20"},
+            {"id": "high", "name": "High", "percentage": "70"},
+            {"id": "tie", "name": "Tie", "percentage": "20"},
+        ]
+
+        self.assertEqual(
+            [row["name"] for row in _sort_breakdown_rows(rows, percentages)],
+            ["High", "Tie", "Low"],
+        )
+
     def test_excel_export_adds_per_user_sheets_and_daily_rate_column(self):
         locale = build_export_locale("en")
         report_data = make_report_data(