/
PdfHelperTests.cs
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/
PdfHelperTests.cs
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using System.Collections.Generic;
using System.IO;
using Xunit;
namespace CombinePDF.Tests
{
public class PdfHelperTests
{
[Fact]
public void CountPages_FileWithOnePage_Returns1()
{
var filePath = @"TestData\first.pdf";
var testee = new PdfHelper();
var result = testee.CountPages(filePath);
Assert.Equal(1, result);
}
[Fact]
public void CombineFiles_OneInputFile_OneResultFile()
{
var outputPath = "singleFile.pdf";
var firstFile = File.OpenRead(@"TestData\first.pdf");
var filesToCombine = new List<Stream>{firstFile};
var testee = new PdfHelper();
testee.CombineFiles(filesToCombine, outputPath);
Assert.Equal(1, testee.CountPages(outputPath));
}
[Fact]
public void CombineFiles_2InputFiles_AreCombinedIntoOne()
{
var outputPath = "combinedFiles.pdf";
var firstFile = File.OpenRead(@"TestData\first.pdf");
var secondFile = File.OpenRead(@"TestData\second.pdf");
var filesToCombine = new List<Stream> { firstFile, secondFile };
var testee = new PdfHelper();
testee.CombineFiles(filesToCombine, outputPath);
Assert.Equal(2, testee.CountPages(outputPath));
}
[Fact]
public void CombineFiles_WithMultiplePages_AllPagesAreCombined()
{
var outputPath = "multiFiles.pdf";
var firstFile = File.OpenRead(@"TestData\first.pdf");
var thirdFile = File.OpenRead(@"TestData\third.pdf");
var filesToCombine = new List<Stream> { thirdFile, firstFile };
var testee = new PdfHelper();
testee.CombineFiles(filesToCombine, outputPath);
Assert.Equal(4, testee.CountPages(outputPath));
}
}
}