adds some code

pkg/state/store_test.go

@@ -0,0 +1,10 @@
+package state
+
+import "testing"
+
+func TestTrimExt(t *testing.T) {
+    got := trimExt("foo.yaml")
+    if got != "foo" {
+        t.Fatalf("expected foo, got %s", got)
+    }
+}