diff --git a/src/tools-TEST/data_out/TsvDiff_out1.txt b/src/tools-TEST/data_out/TsvDiff_out1.txt
new file mode 100644
index 000000000..e69de29bb
diff --git a/src/tools-TEST/data_out/TsvDiff_out2.txt b/src/tools-TEST/data_out/TsvDiff_out2.txt
new file mode 100644
index 000000000..044678854
--- /dev/null
+++ b/src/tools-TEST/data_out/TsvDiff_out2.txt
@@ -0,0 +1,14 @@
++##insert1
+-##bla
++##bla (changed)
++##insert2
++##insert3
+-chr1	120270301	120270301	A	C	hom	11.1	12
+-chr21	40456589	40456589	C	T	hom	111	45
++chr21	40456589	40456589	C	T	het	111	45
+-chrY	8979472	8979472	T	G	hom	15.6	20
+Difference summary:
+comment lines added: 4
+comment lines removed: 1
+content lines added: 1
+content lines removed: 3
\ No newline at end of file