public void WriteToMethodTest_ExpectedDataReturned()
{
StringBuilder actualResult = new StringBuilder();
StringWriter stringWriter = new StringWriter(actualResult);
var catalog = CreateCatalog();
var entities = new IEntity[] { catalog };
string expectedResult = @"<?xml version=""1.0"" encoding=""utf-16""?>" +
"<Library>" +
@"<Catalog unloadingTime=""01/20/2006"" libraryName=""National"">" +
GetBookXml() +
GetNewspaperXml() +
GetPatentXml() +
"</Catalog>" +
"</Library>";
libraryLoader.WriteTo(stringWriter, entities);
stringWriter.Dispose();
Assert.AreEqual(expectedResult, actualResult.ToString());
}