public void DrawsAsUsual()
{
using var surface = SKSurface.Create(new SKImageInfo(258, 258));
DrawIcon.Draw(surface.Canvas);
using var expected = TestRenderingFixture.ThisDirectory.Parent.EnumerateFiles("Icon.png").Single().OpenRead();
using var actual = surface.Snapshot().Encode().AsStream();
Assert.Equal(expected.Length, actual.Length);
Assert.True(TestRenderingFixture.StreamsContentsAreEqual(expected, actual));
}
protected void Run <TContent>(
string inFile, string latex, string folder, Painter <TCanvas, TContent, TColor> painter,
float textPainterCanvasWidth = TextPainter <TCanvas, TColor> .DefaultCanvasWidth) where TContent : class
{
folder = TestRenderingFixture.GetFolder(folder);
var frontEnd = FrontEnd.ToLowerInvariant();
// Prevent black background behind black rendered output in File Explorer preview
painter.HighlightColor = painter.UnwrapColor(new Structures.Color(0xF0, 0xF0, 0xF0));
painter.LaTeX = latex;
var actualFile = new FileInfo(System.IO.Path.Combine(folder, inFile + "." + frontEnd + ".png"));
Assert.False(actualFile.Exists, $"The actual file was not deleted by test initialization: {actualFile.FullName}");
using (var outFile = actualFile.OpenWrite())
DrawToStream(painter, outFile, textPainterCanvasWidth);
actualFile.Refresh();
Assert.True(actualFile.Exists, "The actual image was not created successfully.");
var expectedFile = new FileInfo(System.IO.Path.Combine(folder, inFile + ".png"));
if (!expectedFile.Exists)
{
if (FileSizeTolerance != 0)
{
return; // Only let SkiaSharp create the baseline
}
actualFile.CopyTo(expectedFile.FullName);
expectedFile.Refresh();
}
Assert.True(expectedFile.Exists, "The expected image was not copied successfully.");
using var actualStream = actualFile.OpenRead();
using var expectedStream = expectedFile.OpenRead();
CoreTests.Approximately.Equal(expectedStream.Length, actualStream.Length, expectedStream.Length * FileSizeTolerance);
if (FileSizeTolerance == 0)
{
Assert.True(TestRenderingFixture.StreamsContentsAreEqual(expectedStream, actualStream), "The images differ.");
}
}