public void TestZeroLengthLibreOfficeDocumentWithWaterMarkHeader()
{
XWPFDocument doc = XWPFTestDataSamples.OpenSampleDocument("zero-length.docx");
POIXMLProperties properties = doc.GetProperties();
Assert.IsNotNull(properties.CoreProperties);
XWPFHeader headerArray = doc.GetHeaderArray(0);
Assert.AreEqual(1, headerArray.AllPictures.Count);
Assert.AreEqual("image1.png", headerArray.AllPictures[0].FileName);
Assert.AreEqual("", headerArray.Text);
ExtendedProperties extendedProperties = properties.ExtendedProperties;
Assert.IsNotNull(extendedProperties);
Assert.AreEqual(0, extendedProperties.GetUnderlyingProperties().Characters);
}