feat: allow setting the used ITimeSystem

[vbreuss]

This PR adds the ability to configure a custom ITimeSystem when initializing a MockFileSystem, enhancing the testing capabilities by allowing developers to control time behavior in their tests.

• Adds a new UseTimeSystem() method to MockFileSystemOptions for configuring custom time systems
• Updates the MockFileSystem constructor to use the provided time system instead of always defaulting to current time

---

• Fixes [FileSystem] Bug: Using IFile.Write... does not update IFileInfo.LastWriteTimeUtc #817

[Copilot]

Pull Request Overview

This PR adds the ability to configure a custom ITimeSystem when initializing a MockFileSystem, enhancing the testing capabilities by allowing developers to control time behavior in their tests.

• Adds a new UseTimeSystem() method to MockFileSystemOptions for configuring custom time systems
• Updates the MockFileSystem constructor to use the provided time system instead of always defaulting to current time
• Includes comprehensive test coverage to verify the new functionality works correctly

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
Source/Testably.Abstractions.Testing/MockFileSystem.cs	Adds UseTimeSystem() configuration method and updates constructor to use provided time system
Tests/Testably.Abstractions.Testing.Tests/MockFileSystemInitializationTests.cs	Adds test coverage for the new time system configuration feature and updates existing test parameter naming

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

Test Results

    37 files  ± 0      37 suites  ±0   15m 48s ⏱️ -11s
43 509 tests +10  41 130 ✅ +10  2 379 💤 ±0  0 ❌ ±0 
84 747 runs  + 7  75 957 ✅ + 7  8 790 💤 ±0  0 ❌ ±0 

Results for commit 4a46b39. ± Comparison against base commit 92988f9.

This pull request removes 35631 and adds 35641 tests. Note that renamed tests count towards both.

Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+MockFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "path2894c2f2-507d-4d55-8930-d7bfe19bd55d")
Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+MockFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "path3429cf60-c20f-4641-a5e7-d5c40b0f84b7")
Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+MockFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "path38db933d-7e59-49ad-8da9-f574348628c1")
Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+MockFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "path3b3af9ca-f33b-45e4-9e47-f4953f8290f5")
Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+MockFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "path7792eff0-7a25-4801-be42-e87c3224abde")
Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+MockFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "pathd3bd24e5-e99b-422e-b38f-0287c7873de0")
Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+MockFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "pathfeea67d0-712a-413b-bd7c-09c38792f657")
Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+RealFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "path2278fb3f-399e-488d-ab18-58fc6f7372cf")
Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+RealFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "path28812713-0c8d-4e85-8709-06308a16ae34")
Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+RealFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "path3c1bd70f-5746-40a1-8087-ddcdccbd7545")
…

Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+MockFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "path00b62cdb-bc63-4e14-ba3c-10ee9752f10b")
Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+MockFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "path20f68072-e7fb-4800-abda-286035bb9c82")
Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+MockFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "path4bcaed53-2c23-4791-aad6-35907bbd710d")
Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+MockFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "patha3c20b97-d0b1-4978-9f59-4c6979a893f2")
Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+MockFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "patha3c75faa-e604-42f8-9f09-db5f3e2c2bdc")
Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+MockFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "pathcc80614e-6ccc-4a5e-b308-bdeb73bb94f6")
Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+MockFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "pathdc2c5105-d3b7-4954-b0ed-2fad8bddbfb7")
Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+RealFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "path077ea307-593d-4604-bd19-38394a9967d8")
Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+RealFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "path182c2605-924f-4531-b247-4b0495aa28f7")
Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+RealFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "path1f5c32a8-764d-40d1-889c-2ef6d7167cad")
…

This pull request removes 1754 skipped tests and adds 1754 skipped tests. Note that renamed tests count towards both.

Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+MockFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "path2894c2f2-507d-4d55-8930-d7bfe19bd55d")
Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+MockFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "path38db933d-7e59-49ad-8da9-f574348628c1")
Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+MockFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "path3b3af9ca-f33b-45e4-9e47-f4953f8290f5")
Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+MockFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "pathd3bd24e5-e99b-422e-b38f-0287c7873de0")
Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+RealFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "path2278fb3f-399e-488d-ab18-58fc6f7372cf")
Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+RealFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "path28812713-0c8d-4e85-8709-06308a16ae34")
Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+RealFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "path5f390b4b-2ee4-489e-9fd5-138aff9652f0")
Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+RealFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "pathc867594b-aabe-44d3-bc14-d172ee8bded2")
Testably.Abstractions.Testing.Tests.FileSystem.FileMockTests ‑ GetUnixFileMode_SafeFileHandle_ShouldThrowPlatformNotSupportedExceptionOnWindows(path: "path3b9e09f9-28b1-427d-ab87-ee59449334e1")
Testably.Abstractions.Testing.Tests.FileSystem.FileMockTests ‑ GetUnixFileMode_SafeFileHandle_ShouldThrowPlatformNotSupportedExceptionOnWindows(path: "path81f5a910-efad-4013-a43d-9802f5f14562")
…

Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+MockFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "path00b62cdb-bc63-4e14-ba3c-10ee9752f10b")
Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+MockFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "path20f68072-e7fb-4800-abda-286035bb9c82")
Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+MockFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "patha3c20b97-d0b1-4978-9f59-4c6979a893f2")
Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+MockFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "pathdc2c5105-d3b7-4954-b0ed-2fad8bddbfb7")
Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+RealFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "path077ea307-593d-4604-bd19-38394a9967d8")
Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+RealFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "path182c2605-924f-4531-b247-4b0495aa28f7")
Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+RealFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "path1f5c32a8-764d-40d1-889c-2ef6d7167cad")
Testably.Abstractions.AccessControl.Tests.DirectoryInfoAclExtensionsTests+RealFileSystemTests ‑ SetAccessControl_ShouldNotUpdateTimes(path: "path914a11ee-2cf8-43af-9d72-5994b8d38796")
Testably.Abstractions.Testing.Tests.FileSystem.FileMockTests ‑ GetUnixFileMode_SafeFileHandle_ShouldThrowPlatformNotSupportedExceptionOnWindows(path: "path461a426c-de0b-4751-8130-9fbd8fb2ec7b")
Testably.Abstractions.Testing.Tests.FileSystem.FileMockTests ‑ GetUnixFileMode_SafeFileHandle_ShouldThrowPlatformNotSupportedExceptionOnWindows(path: "path6c1b80da-78af-4b59-932b-93fb2a09a7c8")
…

[github-actions]

This is addressed in release v4.3.0.