April 2019
Beginner to intermediate
244 pages
6h 34m
English
Content preview from Programming Ecto
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Setting Up an Async Test
To use the sandbox, change your Repo configuration to use the sandbox pool. We only want to do this when we’re in our test environment, so make the following change in config/test.exs and only there:
| | config :music_db, MusicDB.Repo, |
| | pool: Ecto.Adapters.SQL.Sandbox |
| | # other settings here |
By changing the pool: setting, we’re telling Ecto that we will not be using the default connection pool and instead give the sandbox full control over how connections are checked out and used by processes.
Next, we need to set our sandbox to the correct ownership mode. We’ll cover this setting in more detail later, but for now, add this line to test/test_helper.exs:
| | Ecto.Adapters.SQL.Sandbox.mode(MusicDB.Repo, ... |
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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