added additional test

satrs-core/src/pus/scheduler.rs

@@ -1932,6 +1932,35 @@ mod tests {
         assert_eq!(pus_tc_reader, ping_tc);
     }
 
+    #[test]
+    fn test_generic_insert_app_data_test_byte_conv_error() {
+        let time_writer = cds::TimeProvider::new_with_u16_days(1, 1);
+        let mut sph = SpHeader::new(
+            PacketId::const_new(PacketType::Tc, true, 0x002),
+            PacketSequenceCtrl::const_new(SequenceFlags::Unsegmented, 5),
+            0,
+        );
+        let sec_header = PusTcSecondaryHeader::new_simple(17, 1);
+        let ping_tc = PusTcCreator::new_no_app_data(&mut sph, sec_header, true);
+        let mut buf: [u8; 16] = [0; 16];
+        let result = generate_insert_telecommand_app_data(&mut buf, &time_writer, &ping_tc);
+        assert!(result.is_err());
+        let error = result.unwrap_err();
+        if let ScheduleError::ByteConversionError(ByteConversionError::ToSliceTooSmall {
+            found,
+            expected,
+        }) = error
+        {
+            assert_eq!(found, 16);
+            assert_eq!(
+                expected,
+                2 + time_writer.len_written() + ping_tc.len_written()
+            );
+        } else {
+            panic!("unexpected error {error}")
+        }
+    }
+
     #[test]
     fn test_generic_insert_app_data_test_as_vec() {
         let time_writer = cds::TimeProvider::new_with_u16_days(1, 1);