add file to test CI

.github/workflows/test.yml

@@ -13,4 +13,4 @@ jobs:
         uses: actions/setup-go@v1
         with:
           go-version: ${{ matrix.go }}
-      - run: echo "i am groot"
+      - run: go run main.go

main.go

@@ -0,0 +1,5 @@
+package main
+import "fmt"
+func main() {
+    fmt.Println("hello world")
+}