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add test coverage for direct object finder

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Eliot Jones
2019-06-14 20:57:46 +01:00
parent 98424b32aa
commit 2c9a3d6e96
2 changed files with 110 additions and 1 deletions
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106
src/UglyToad.PdfPig.Tests/Parser/Parts/DirectObjectFinderTests.cs Normal file
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@@ -0,0 +1,106 @@
namespace UglyToad.PdfPig.Tests.Parser.Parts
{
using System;
using Exceptions;
using PdfPig.Parser.Parts;
using PdfPig.Tokens;
using Tokens;
using Xunit;
public class DirectObjectFinderTests
{
private readonly TestPdfTokenScanner scanner = new TestPdfTokenScanner();
[Fact]
public void TryGetCanFollowMultipleReferenceLinks()
{
var reference1 = new IndirectReference(7, 0);
var reference2 = new IndirectReference(9, 0);
scanner.Objects[reference1] = new ObjectToken(10, reference1, new IndirectReferenceToken(reference2));
scanner.Objects[reference2] = new ObjectToken(12, reference2, new NumericToken(69));
Assert.True(DirectObjectFinder.TryGet(new IndirectReferenceToken(reference1), scanner, out NumericToken result));
Assert.Equal(69, result.Int);
}
[Fact]
public void GetCanFollowMultipleReferenceLinks()
{
var reference1 = new IndirectReference(7, 0);
var reference2 = new IndirectReference(9, 0);
scanner.Objects[reference1] = new ObjectToken(10, reference1, new IndirectReferenceToken(reference2));
scanner.Objects[reference2] = new ObjectToken(12, reference2, new NumericToken(69));
var result = DirectObjectFinder.Get<NumericToken>(reference1, scanner);
Assert.Equal(69, result.Int);
}
[Fact]
public void GetTokenCanFollowMultipleReferenceLinks()
{
var reference1 = new IndirectReference(7, 0);
var reference2 = new IndirectReference(9, 0);
scanner.Objects[reference1] = new ObjectToken(10, reference1, new IndirectReferenceToken(reference2));
scanner.Objects[reference2] = new ObjectToken(12, reference2, new NumericToken(69));
var result = DirectObjectFinder.Get<NumericToken>(new IndirectReferenceToken(reference1), scanner);
Assert.Equal(69, result.Int);
}
[Fact]
public void GetReturnsSingleItemFromArray()
{
var reference = new IndirectReference(10, 0);
const string expected = "Goopy";
scanner.Objects[reference] = new ObjectToken(10, reference, new ArrayToken(new []
{
new StringToken(expected)
}));
var result = DirectObjectFinder.Get<StringToken>(reference, scanner);
Assert.Equal(expected, result.Data);
}
[Fact]
public void GetFollowsSingleIndirectReferenceFromArray()
{
var reference = new IndirectReference(10, 0);
var reference2 = new IndirectReference(69, 0);
const string expected = "Goopy";
scanner.Objects[reference] = new ObjectToken(10, reference, new ArrayToken(new[]
{
new IndirectReferenceToken(reference2)
}));
scanner.Objects[reference2] = new ObjectToken(69, reference2, new StringToken(expected));
var result = DirectObjectFinder.Get<StringToken>(reference, scanner);
Assert.Equal(expected, result.Data);
}
[Fact]
public void GetThrowsOnInvalidArray()
{
var reference = new IndirectReference(10, 0);
scanner.Objects[reference] = new ObjectToken(10, reference, new ArrayToken(new[]
{
new NumericToken(5), new NumericToken(6), new NumericToken(0)
}));
Action action = () => DirectObjectFinder.Get<StringToken>(reference, scanner);
Assert.Throws<PdfDocumentFormatException>(action);
}
}
}

5
src/UglyToad.PdfPig.Tests/Tokens/TestPdfTokenScanner.cs
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@@ -2,12 +2,15 @@
namespace UglyToad.PdfPig.Tests.Tokens
{
using System;
using System.Collections.Generic;
using PdfPig.Tokenization;
using PdfPig.Tokenization.Scanner;
using PdfPig.Tokens;
internal class TestPdfTokenScanner : IPdfTokenScanner
{
public Dictionary<IndirectReference, ObjectToken> Objects { get; }
= new Dictionary<IndirectReference, ObjectToken>();
public bool MoveNext()
{
throw new NotImplementedException();
@@ -37,7 +40,7 @@ namespace UglyToad.PdfPig.Tests.Tokens
public ObjectToken Get(IndirectReference reference)
{
throw new NotImplementedException();
return Objects[reference];
}
}
}