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Home/ Questions/Q 7860421
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Editorial Team
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Editorial Team
Asked: June 2, 20262026-06-02T22:16:37+00:00 2026-06-02T22:16:37+00:00

assert !ActionMailer::Base.deliveries.empty?, Queue is empty If I have two unit tests that send mail,

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assert !ActionMailer::Base.deliveries.empty?, "Queue is empty"

If I have two unit tests that send mail, and I want to check in each that the queue is not empty, will I have to reset the queue in the second test (to clear anything that might be in there from the first test)?

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  1. Editorial Team
    Editorial Team
    2026-06-02T22:16:49+00:00Added an answer on June 2, 2026 at 10:16 pm

    You have to empty it yourself because ActionMailer::Base.deliveries will persist between tests (It is a singleton). You should always clear the deliveries array before any test runs to ensure it is empty.

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