diff --git a/.projections.json b/.projections.json
index 04f14764b..3fe1073c2 100644
--- a/.projections.json
+++ b/.projections.json
@@ -1,4 +1,6 @@
 {
+  "autoload/SpaceVim/api/*.vim": {"alternate": "test/api/{}.vader"},
+  "test/api/*.vader": {"alternate": "autoload/SpaceVim/api/{}.vim"},
   "docs/*.md": {"alternate": "docs/cn/{}.md"},
   "docs/cn/*.md": {"alternate": "docs/{}.md"},
   "doc/*.txt": {"alternate": "doc/{}.cnx"},
diff --git a/test/api/system.vader b/test/api/system.vader
new file mode 100644
index 000000000..e69de29bb