A per-handler test case: populate the store at the handler's INPUT version, then assert the OUTPUT after the handler runs. setup may return anything (e.g. the entities it created) to carry into expect.
setup
expect
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A per-handler test case: populate the store at the handler's INPUT version, then assert the OUTPUT after the handler runs.
setupmay return anything (e.g. the entities it created) to carry intoexpect.