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# Navigation API ordering/transition tests
These are meant to test the ordering between various events and promises, as
well as in some cases how the `navigation.transition` values changes.
Some of them use the `Recorder` framework in `resources/helpers.mjs`, and others
test tricky cases (e.g. reentrancy) in a more ad-hoc way.
reference for the intent of these tests.
Note:
* Variants specifically exist for `currententrychange` because an event listener
existing for `currententrychange` causes code to run, and thus microtasks to run,
at a very specific point in the navigation-commit lifecycle. We want to test
that it doesn't impact the ordering.
* Similarly we test that `intercept()` does not change
the ordering compared to no `intercept()` call, for same-document
navigations, by trying to ensure most variants have appropriate
`intercept()` counterparts with similar orderings.
TODOs:
* Also test `popstate` and `hashchange` once