measures for multiple sentence counts, improved test suite
diff --git a/t/artificial/base/sentences.xml b/t/artificial/base/sentences.xml
new file mode 100644
index 0000000..be19d62
--- /dev/null
+++ b/t/artificial/base/sentences.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<?xml-model href="span.rng" type="application/xml" schematypens="http://relaxng.org/ns/structure/1.0"?>
+
+<layer docid="ART_00001" xmlns="http://ids-mannheim.de/ns/KorAP" version="KorAP-0.4">
+ <spanList>
+ <span from="0" to="129" />
+ </spanList>
+</layer>