Deterministic simulation testing: Difference between revisions
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On the [[.NET]] platform | On the [[.NET]] platform an instance of the {{Mono|Random}} class can be seeded by providing a seed to the constructor.<ref>{{cite web |title=Random Class (System) |url=https://learn.microsoft.com/en-us/dotnet/api/system.random?view=net-9.0 |website=learn.microsoft.com |access-date=3 December 2024 |language=en-us}}</ref> | ||
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var random = new Random(42); | var random = new Random(42); | ||
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On the [[.NET]] platform the {{Mono|FakeTimeProvider}}<ref>{{cite web |title=FakeTimeProvider Class (Microsoft.Extensions.Time.Testing) |url=https://learn.microsoft.com/en-us/dotnet/api/microsoft.extensions.time.testing.faketimeprovider?view=net-9.0-pp&viewFallbackFrom=net-9.0 |website=learn.microsoft.com |access-date=3 December 2024 |language=en-us}}</ref> class can be used which derives from the {{Mono|TimeProvider}} abstract class.<ref>{{cite web |title=TimeProvider Class (System) |url=https://learn.microsoft.com/en-us/dotnet/api/system.timeprovider?view=net-9.0 |website=learn.microsoft.com |language=en-us}}</ref> | On the [[.NET]] platform the {{Mono|FakeTimeProvider}}<ref>{{cite web |title=FakeTimeProvider Class (Microsoft.Extensions.Time.Testing) |url=https://learn.microsoft.com/en-us/dotnet/api/microsoft.extensions.time.testing.faketimeprovider?view=net-9.0-pp&viewFallbackFrom=net-9.0 |website=learn.microsoft.com |access-date=3 December 2024 |language=en-us}}</ref> class can be used, which derives from the {{Mono|TimeProvider}} abstract class.<ref>{{cite web |title=TimeProvider Class (System) |url=https://learn.microsoft.com/en-us/dotnet/api/system.timeprovider?view=net-9.0 |website=learn.microsoft.com |language=en-us}}</ref> | ||
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Revision as of 03:56, 22 March 2026
Deterministic simulation testing (DST) is a type of software testing for testing distributed systems.
It is used to test the FoundationDB and Turso databases.
A global seed for randomness is used.
In Python the random number generator can be seeded using the seed function in the random module.[1]
random.seed(42)
On the .NET platform an instance of the Random class can be seeded by providing a seed to the constructor.[2]
var random = new Random(42);
On the .NET platform the FakeTimeProvider[3] class can be used, which derives from the TimeProvider abstract class.[4]
var datetime = new DateTime(1969, 07, 20);
var time = new FakeTimeProvider(datetime);
internal class Foo(TimeProvider timeProvider)
{
// ...
}
In other programming languages a mock object can be used.
References
- ↑ "random — Generate pseudo-random numbers". Python documentation. Retrieved 3 December 2024.
- ↑ "Random Class (System)". learn.microsoft.com. Retrieved 3 December 2024.
- ↑ "FakeTimeProvider Class (Microsoft.Extensions.Time.Testing)". learn.microsoft.com. Retrieved 3 December 2024.
- ↑ "TimeProvider Class (System)". learn.microsoft.com.
External links
- https://notes.eatonphil.com/2024-08-20-deterministic-simulation-testing.html
- Jepsen - A framework for distributed systems verification, with fault injection
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