diff --git a/test/Test_representative_and_match/inputs/test_gene_exprL_csv.csv b/test/Test_representative_and_match/inputs/test_gene_exprL_csv.csv
new file mode 100644
index 0000000000000000000000000000000000000000..6896eca4b5e877543e6b3c795a1e84be28ee4057
--- /dev/null
+++ b/test/Test_representative_and_match/inputs/test_gene_exprL_csv.csv
@@ -0,0 +1,4 @@
+ENSMUST00000139270,1.0887715239511602
+ENSMUST00000144662,1.000000
+ENSMUST00000112933,0.8381441606416928
+ENSMUST00000155846,0.9145581387636652
\ No newline at end of file