diff --git a/.gitignore b/.gitignore
index 222c609..dd4c07a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,5 +3,6 @@
 !.git*
 
 build/
+coverage/
 dist/
 node_modules/
diff --git a/src/main.test.ts b/src/main.test.ts
new file mode 100644
index 0000000..ca71ea1
--- /dev/null
+++ b/src/main.test.ts
@@ -0,0 +1 @@
+test("some test", () => {});