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<img src="/src/icon.png" height="30px"> Verify.ImageMagick

Extends Verify to allow verification of documents via Magick.NET.

See Milestones for release notes.

Converts documents pdfs to png for verification.

Contains comparers for png, jpg, bmp, and tiff.

NuGet package

https://nuget.org/packages/Verify.ImageMagick/

Usage

<a id='snippet-enable'></a>

[ModuleInitializer]
public static void Init()
{
    VerifyImageMagick.Initialize();
    VerifyImageMagick.RegisterComparers(threshold: 0.05);
}

^{<a href='/src/Tests/ModuleInitializer.cs#L3-L12' title='Snippet source file'>snippet source</a> | <a href='#snippet-enable' title='Start of snippet'>anchor</a>}

Initialize registers the pdf to png converter and all comparers.

PDF converter

To register only the pdf to png converter:

VerifyImageMagick.RegisterPdfToPngConverter();

Verify a file

<a id='snippet-VerifyPdf'></a>

[Test]
public Task VerifyPdf() =>
    VerifyFile("sample.pdf");

^{<a href='/src/Tests/Samples.cs#L32-L38' title='Snippet source file'>snippet source</a> | <a href='#snippet-VerifyPdf' title='Start of snippet'>anchor</a>}

Verify a Stream

<a id='snippet-VerifyPdfStream'></a>

[Test]
public Task VerifyPdfStream()
{
    var stream = new MemoryStream(File.ReadAllBytes("sample.pdf"));
    return Verify(stream, "pdf");
}

^{<a href='/src/Tests/Samples.cs#L40-L49' title='Snippet source file'>snippet source</a> | <a href='#snippet-VerifyPdfStream' title='Start of snippet'>anchor</a>}

Result

Samples.VerifyPdf#00.verified.png:

Image Comparers

The following will use ImageMagick to compare the images instead of the default binary comparison.

<a id='snippet-CompareImage'></a>

[Test]
public Task CompareImage() =>
    VerifyFile("sample.jpg");

^{<a href='/src/Tests/Samples.cs#L6-L12' title='Snippet source file'>snippet source</a> | <a href='#snippet-CompareImage' title='Start of snippet'>anchor</a>}

Register all comparers

All comparers can be registered:

VerifyImageMagick.RegisterComparers();

Override transparent background

For images with a transparent background, that background can be overridden:

<a id='snippet-BackgroundColor'></a>

[Test]
public Task BackgroundColor() =>
    VerifyFile("transparent.png")
        .ImageMagickBackground(MagickColors.Blue);

^{<a href='/src/Tests/Samples.cs#L14-L21' title='Snippet source file'>snippet source</a> | <a href='#snippet-BackgroundColor' title='Start of snippet'>anchor</a>}

Open password-protected PDFs

For password-protected PDF, the password can be provided to allow verification:

<a id='snippet-PdfPassword'></a>

[Test]
public Task PdfPassword() =>
    VerifyFile("password.pdf")
        .ImageMagickPdfPassword("password");

^{<a href='/src/Tests/Samples.cs#L23-L30' title='Snippet source file'>snippet source</a> | <a href='#snippet-PdfPassword' title='Start of snippet'>anchor</a>}

Icon

Swirl designed by Philipp Petzka from The Noun Project.