Shard PPR navigations tests into multiple files #60577
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I've used this helper enough times that I think it's OK to extact it to its own module.
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Better for paralellization in CI.
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### Depends on - #60577 --- A popstate navigation reads data from the local cache. It does not issue new network requests (unless the cache entries have been evicted). So, when navigating with back/forward, we should not switch back to the PPR loading state. We should render the full, cached dynamic data immediately. To implement this, on a popstate navigation, we update the cache to drop the prefetch data for any segment whose dynamic data was already received. We clone the entire cache node tree and set the `prefetchRsc` field to `null` to prevent it from being rendered. (We can't mutate the node in place because Cache Node is a concurrent data structure.) Technically, what we're actually checking is whether the dynamic network response was received. But since it's a streaming response, this does not mean that all the dynamic data has fully streamed in. It just means that _some_ of the dynamic data was received. But as a heuristic, we assume that the rest dynamic data will stream in quickly, so it's still better to skip the prefetch state. Closes NEXT-2084
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Merged via #60578 |
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I originally put these test cases into a single test module so I could avoid abstracting out the test helpers too early. At this point though it's better to keep them in separate modules because it allows CI to parallelize them.
This does not add any additional code or tests, just reorganizes what's already there.
Closes NEXT-2083