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How can we eradicate non-determinism in tests?

Deepika Sahu answered on December 17, 2022 Popularity 1/10 Helpfulness 1/10

answer How can we eradicate non-determinism in tests?

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How can we eradicate non-determinism in tests?

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Non-Deterministic Tests (NDT)  are basically unreliable tests.  So, sometimes it may happen that they pass and obviously sometimes they may also fail. As and when they fail, they are made to re-run to pass.

Some ways to remove non-determinism from tests are as follows:

Quarantine
Asynchronous
Remote Services
Isolation
Time
Resource leaks

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Contributed on Dec 17 2022

Deepika Sahu

0 Answers Avg Quality 2/10

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How can we eradicate non-determinism in tests?

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Summary

Avoid non-determinism in tests.

To overcome non-determinism due to asynchronous execution: Separate domain logic from the code that deals with asynchrony. ...

To overcome non-determinism due to working with time: Use dependency injection to pass the current time around

public static class SystemDateTime
{
    private static Func<DateTime> _func;
 
    public static DateTime Now
    {
        get { return _func(); }
    }
 
    public static void Init(Func<DateTime> func)
    {
        _func = func;
    }
}

https://martinfowler.com/articles/nonDeterminism.html

Popularity 1/10 Helpfulness 1/10 Language java

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Contributed on Feb 04 2023

Pragya Keshap

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How can we eradicate non-determinism in tests?

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