Desc Sorting with start_val in filtered collection not working properly

[joepio]

I was creating this query, which both filters (by val and prop) and sorts by a different property than the filter.

    let query_children = Query {
        property: Some(PARENT.into()),
        value: Some(Value::AtomicUrl(resource.get_subject().clone())),
        limit: Some(page_limit + 1),
        start_val: Some(Value::Timestamp(start_val)),
        end_val: None,
        offset: 0,
        sort_by: Some(urls::CREATED_AT.into()),
        sort_desc: false,
        include_external: false,
        include_nested: false,
        for_agent: for_agent.map(|s| s.to_string()),
    };

The result is that the sort is not proper. After checking out the saved keys, it becomes apparent that the server is storing the wrong value in the index key, namely the filter value instead of the sort value.

I should add a failing test for this.

Edit: No, it's more specific. It's using a start_val in descending order. That's the problem

[joepio]

Turns out it works fine, and the issue was with query param parsing. Fixed in #381