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fix tests by using custom equality comparers

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since we now round glyph widths for truetype fonts in the widths array of the pdf some values are out by a very small amount from the expected value. since we don't care about such fractional inaccuracy we use a custom comparer for these tests.
This commit is contained in:
Eliot Jones
2019-12-31 14:07:52 +00:00
parent 3ad03ff3ee
commit 9fff879bd4
2 changed files with 43 additions and 10 deletions
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27
src/UglyToad.PdfPig.Tests/PointComparer.cs Normal file
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@@ -0,0 +1,27 @@
namespace UglyToad.PdfPig.Tests
{
using System;
using System.Collections.Generic;
using PdfPig.Geometry;
internal class PointComparer : IEqualityComparer<PdfPoint>
{
private readonly IEqualityComparer<double> doubleComparer;
public PointComparer(IEqualityComparer<double> doubleComparer)
{
this.doubleComparer = doubleComparer ?? throw new ArgumentNullException(nameof(doubleComparer));
}
public bool Equals(PdfPoint a, PdfPoint b)
{
return doubleComparer.Equals(a.X, b.X)
&& doubleComparer.Equals(a.Y, b.Y);
}
public int GetHashCode(PdfPoint obj)
{
return obj.GetHashCode();
}
}
}

26
src/UglyToad.PdfPig.Tests/Writer/PdfDocumentBuilderTests.cs
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@@ -128,17 +128,20 @@
Assert.Equal("H", h.Value); Assert.Equal("H", h.Value);
Assert.Equal("Andada-Regular", h.FontName); Assert.Equal("Andada-Regular", h.FontName);
var comparer = new DoubleComparer(0.01);
var pointComparer = new PointComparer(comparer);
for (int i = 0; i < page1.Letters.Count; i++) for (int i = 0; i < page1.Letters.Count; i++)
{ {
var readerLetter = page1.Letters[i]; var readerLetter = page1.Letters[i];
var writerLetter = letters[i]; var writerLetter = letters[i];
Assert.Equal(readerLetter.Value, writerLetter.Value); Assert.Equal(readerLetter.Value, writerLetter.Value);
Assert.Equal(readerLetter.Location, writerLetter.Location); Assert.Equal(readerLetter.Location, writerLetter.Location, pointComparer);
Assert.Equal(readerLetter.FontSize, writerLetter.FontSize); Assert.Equal(readerLetter.FontSize, writerLetter.FontSize, comparer);
Assert.Equal(readerLetter.GlyphRectangle.Width, writerLetter.GlyphRectangle.Width); Assert.Equal(readerLetter.GlyphRectangle.Width, writerLetter.GlyphRectangle.Width, comparer);
Assert.Equal(readerLetter.GlyphRectangle.Height, writerLetter.GlyphRectangle.Height); Assert.Equal(readerLetter.GlyphRectangle.Height, writerLetter.GlyphRectangle.Height, comparer);
Assert.Equal(readerLetter.GlyphRectangle.BottomLeft, writerLetter.GlyphRectangle.BottomLeft); Assert.Equal(readerLetter.GlyphRectangle.BottomLeft, writerLetter.GlyphRectangle.BottomLeft, pointComparer);
} }
} }
} }
@@ -193,17 +196,20 @@
Assert.Equal("H", h.Value); Assert.Equal("H", h.Value);
Assert.Equal("BaskOldFace", h.FontName); Assert.Equal("BaskOldFace", h.FontName);
var comparer = new DoubleComparer(0.01);
var pointComparer = new PointComparer(comparer);
for (int i = 0; i < letters.Count; i++) for (int i = 0; i < letters.Count; i++)
{ {
var readerLetter = page1.Letters[i]; var readerLetter = page1.Letters[i];
var writerLetter = letters[i]; var writerLetter = letters[i];
Assert.Equal(readerLetter.Value, writerLetter.Value); Assert.Equal(readerLetter.Value, writerLetter.Value);
Assert.Equal(readerLetter.Location, writerLetter.Location); Assert.Equal(readerLetter.Location, writerLetter.Location, pointComparer);
Assert.Equal(readerLetter.FontSize, writerLetter.FontSize); Assert.Equal(readerLetter.FontSize, writerLetter.FontSize, comparer);
Assert.Equal(readerLetter.GlyphRectangle.Width, writerLetter.GlyphRectangle.Width); Assert.Equal(readerLetter.GlyphRectangle.Width, writerLetter.GlyphRectangle.Width, comparer);
Assert.Equal(readerLetter.GlyphRectangle.Height, writerLetter.GlyphRectangle.Height); Assert.Equal(readerLetter.GlyphRectangle.Height, writerLetter.GlyphRectangle.Height, comparer);
Assert.Equal(readerLetter.GlyphRectangle.BottomLeft, writerLetter.GlyphRectangle.BottomLeft); Assert.Equal(readerLetter.GlyphRectangle.BottomLeft, writerLetter.GlyphRectangle.BottomLeft, pointComparer);
} }
} }
} }