public void SourceDirectories()
{
var parserResult1 = new ParserResult();
Assert.Equal(0, parserResult1.SourceDirectories.Count);
parserResult1.AddSourceDirectory("C:\\temp1");
parserResult1.AddSourceDirectory("C:\\temp2");
Assert.Equal(2, parserResult1.SourceDirectories.Count);
var parserResult2 = new ParserResult();
parserResult2.AddSourceDirectory("C:\\temp2");
parserResult2.AddSourceDirectory("C:\\temp3");
Assert.Equal(2, parserResult1.SourceDirectories.Count);
parserResult1.Merge(parserResult2);
Assert.Equal(3, parserResult1.SourceDirectories.Count);
}