ApprovalTests.WinForms

Extends ApprovalTests for approval of Windows Forms through screenshot verification.

The NuGet package

https://nuget.org/packages/ApprovalTests.WinForms/

PM> Install-Package ApprovalTests.WinForms

Usage

WinFormsApprovals.Verify(new Form());

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System Differences

Usually Approval files take the form:

ClassName.MethodName.approved.extension

However, as WinForms will render differently on each OS, when approving with WinForms it will take the form

ClassName.MethodName.osname.approved.extension

It does this before each run by calling

ApprovalResults.UniqueForOs;

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An Example Approval File would be:

WinFormTests.TestControlApproved.Microsoft_Windows_10_Home_N.approved.png

Customizing System Naming

If you would like a different naming system you can customize the default naming.

For example, if you would like to use the the users name you could do this:

WinFormsApprovals.RegisterDefaultAdditionalInfo(ApprovalResults.UniqueForUserName);

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Would yield:

"WinFormTests.DemoAlternativeMachineSpecific.ForUser.Tomas";

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Read more on EnvironmentSpecificTest here