feat: add time limit parsing function and update time_to_run parameter to accept string inputs

test/test_workers.py

@@ -2118,4 +2118,16 @@ def test_shift_dependent_dates_model_definition():
     assert len(worker.shift_end_dates) == 1
     assert isinstance(worker.shift_end_dates[0], ShiftEndDate)
     assert worker.shift_end_dates[0].shift == "a"
-    assert worker.shift_end_dates[0].end_date == datetime.date(2022, 4, 7)
+    assert worker.shift_end_dates[0].end_date == datetime.date(2022, 4, 7)
+
+
+def test_parse_time_limit():
+    from gen_proc import parse_time_limit
+    assert parse_time_limit(3600) == 3600
+    assert parse_time_limit("3600") == 3600
+    assert parse_time_limit("10h") == 36000
+    assert parse_time_limit("30m") == 1800
+    assert parse_time_limit("45s") == 45
+    assert parse_time_limit(" 1.5h ") == 5400
+    with pytest.raises(ValueError):
+        parse_time_limit("invalid")