add a test

src/routes/(editor)/export/print/PrintShip/Weapons/HeavyMissile/index.test.js

@@ -0,0 +1,14 @@
+import { render } from "@testing-library/svelte";
+import HeavyMissile from "./index.svelte";
+
+test("basic", () => {
+    const { queryByText } = render(HeavyMissile, {
+        props: {
+            extended: true,
+            multiStage: false,
+        },
+    });
+
+    expect(queryByText("extended range")).toBeTruthy();
+    expect(queryByText("multi-stage")).toBeFalsy();
+});