diff --git a/tests/test_data/input/ds1/src.txt b/tests/test_data/input/ds1/src.txt
new file mode 100644
index 0000000..f3a4634
--- /dev/null
+++ b/tests/test_data/input/ds1/src.txt
@@ -0,0 +1 @@
+datafile1: MBP 1uM maltose_2
\ No newline at end of file