DiffEngine manages launching and cleanup of diff tools. It is designed to be used by any Snapshot/Approval testing library.

See Milestones for release notes.

Currently used by:

• ApprovalTests
• Shouldly
• Verify

• NuGet package
• Supported Tools
• Launching a tool
• Closing a tool
• File type detection
• BuildServerDetector
• Disable for a machine/process
• Disable in code
• Icons
• Tools
• Tool Order
• Custom Tool
• DiffEngineTray
• Code versus machine level settings

• https://nuget.org/packages/DiffEngine/

• BeyondCompare Win/OSX/Linux (Cost: Paid)
• P4Merge Win/OSX/Linux (Cost: Free)
• Kaleidoscope OSX (Cost: Paid)
• DeltaWalker Win/OSX (Cost: Paid)
• WinMerge Win (Cost: Free with option to donate)
• TortoiseGitMerge Win (Cost: Free)
• TortoiseGitIDiff Win (Cost: Free)
• TortoiseMerge Win (Cost: Free)
• TortoiseIDiff Win (Cost: Free)
• KDiff3 Win/OSX (Cost: Free)
• TkDiff OSX (Cost: Free)
• Guiffy Win/OSX (Cost: Paid)
• ExamDiff Win (Cost: Paid)
• Diffinity Win (Cost: Free with option to donate)
• Rider Win/OSX/Linux (Cost: Paid with free option for OSS)
• Vim Win/OSX (Cost: Free with option to donate)
• Neovim Win/OSX/Linux (Cost: Free with option to sponsor)
• AraxisMerge Win/OSX (Cost: Paid)
• Meld Win/OSX/Linux (Cost: Free)
• SublimeMerge Win/OSX/Linux (Cost: Paid)
• VisualStudioCode Win/OSX/Linux (Cost: Free)
• VisualStudio Win (Cost: Paid and free options)

A tool can be launched using the following:

await DiffRunner.LaunchAsync(tempFile, targetFile);

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Note that this method will respect the above difference behavior in terms of Auto refresh and MDI behaviors.

A tool can be closed using the following:

DiffRunner.Kill(file1, file2);

^{snippet source | anchor}

Note that this method will respect the above difference behavior in terms of MDI behavior.

DiffEngine use EmptyFiles to determine if a given file or extension is a binary or text. Custom extensions can be added, or existing ones changed.

BuildServerDetector.Detected returns true if the current code is running on a build/CI server.

Supports:

• AppVeyor
• Travis
• Jenkins
• GitHub Actions
• AzureDevops
• TeamCity
• MyGet
• GitLab
• GoCD

Set an environment variable DiffEngine_Disabled with the value true.

DiffRunner.Disabled = true;

Game designed by Andrejs Kirma from The Noun Project.

Tray icons from LineIcons.