public void TestExcelWorkbook()
{
MemoryStream stream = new MemoryStream();
Package package = CreateSpreadsheet(stream);
Assert.IsTrue(package.PartExists(new Uri("/xl/workbook.xml", UriKind.Relative)), "#1");
Assert.IsTrue(package.PartExists(new Uri("/xl/sharedStrings.xml", UriKind.Relative)), "#2");
package.Close();
package = Package.Open(new MemoryStream(stream.ToArray()), FileMode.Open);
PackagePart workbookPart = package.GetPart(new Uri("/xl/workbook.xml", UriKind.Relative));
Assert.IsTrue(workbookPart.RelationshipExists("rel1"), "#3");
var r = workbookPart.GetRelationship("rel1");
Assert.IsFalse(r.TargetUri.IsAbsoluteUri, "#4");
package.Close();
}
