Enhancing Elixir Test Reliability with Task Supervision

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Enhancing Elixir Test Reliability with Task Supervision

Source: dockyard.com

Type: Post

The article by Ryan Winchester provides insights into improving test reliability for async tasks in Elixir. When writing tests that involve async tasks, the common approach is to use a `sleep` function to wait for a specific period. However, this method is imprecise and can lead to fragile and slow tests. The article suggests using `assert_receive` in combination with a custom test helper function, `flush_task_supervisor`, to wait for supervised tasks to complete. This method ensures that all async tasks have finished before the test proceeds. The author credits José Valim for this helpful tip and encourages its use in projects involving tasks.

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