diff --git a/api/server/src/test/java/org/softwareheritage/graph/datasets/dir_to_dir.edges.csv b/api/server/src/test/java/org/softwareheritage/graph/datasets/dir_to_dir.edges.csv
new file mode 100644
index 0000000..9273caf
--- /dev/null
+++ b/api/server/src/test/java/org/softwareheritage/graph/datasets/dir_to_dir.edges.csv
@@ -0,0 +1,4 @@
+0000000000000000000000000000000000000001 0000000000000000000000000000000000000002
+0000000000000000000000000000000000000002 0000000000000000000000000000000000000003
+0000000000000000000000000000000000000002 0000000000000000000000000000000000000005
+0000000000000000000000000000000000000001 0000000000000000000000000000000000000008
diff --git a/api/server/src/test/java/org/softwareheritage/graph/datasets/dir_to_file.edges.csv b/api/server/src/test/java/org/softwareheritage/graph/datasets/dir_to_file.edges.csv
new file mode 100644
index 0000000..5c8cc27
--- /dev/null
+++ b/api/server/src/test/java/org/softwareheritage/graph/datasets/dir_to_file.edges.csv
@@ -0,0 +1,5 @@
+0000000000000000000000000000000000000003 0000000000000000000000000000000000000004
+0000000000000000000000000000000000000005 0000000000000000000000000000000000000006
+0000000000000000000000000000000000000002 0000000000000000000000000000000000000007
+0000000000000000000000000000000000000008 0000000000000000000000000000000000000009
+0000000000000000000000000000000000000001 0000000000000000000000000000000000000010