b4cb47815f
It's sometimes necessary to work with all the items in a Sparkle feed to be able to correctly identify the newest version but livecheck's `Sparkle` strategy only passes the `item` it views as newest into a `strategy` block. This updates the `Sparkle` strategy to optionally pass all items into a `strategy` block, so we can manipulate them (e.g., filtering, sorting). This is enabled by naming the first argument of the strategy block `items` instead of `item`. `Sparkle` `strategy` blocks where the first argument is `item` will continue to work as expected. This necessarily updates `#item_from_content` (now `items_from_content`) to return all items. I've decided to move the sorting out of `#items_from_content`, so it simply returns the items in the order they appear. If there is ever an exceptional situation where we need the original order, this will technically allow for it. The sorting has instead been moved into the `#versions_from_content` method, to maintain the existing behavior. I thought about passing the items into the `strategy` block in their original order but it feels like sorting by default is the better approach for now (partly from the perspective of maintaining existing behavior) and we can always revisit this in the future if a cask ever requires the original order. Lastly, this expands the `Sparkle` tests to increase coverage. The only untested parts are `#find_versions` (which currently requires a network request) and a couple safeguard `raise` calls when there's a `REXML::UndefinedNamespaceException` (which shouldn't be encountered unless something is broken).
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