add failing test for calling FIle I/O in macro

test/bundler/bundler_macro.test.ts

@@ -0,0 +1,41 @@
+import { describe, expect } from "bun:test";
+import { join } from "node:path";
+import { itBundled } from "./expectBundled";
+const fixturePath = join(import.meta.dir, "fixtures/hello.txt");
+const macros = /* js */ String.raw`
+  export function identity(arg: any) {
+    return arg;
+  }
+
+  export function file(): Promise<string> {
+    return Bun.file(${JSON.stringify(fixturePath)}).text();
+  }
+`;
+
+describe("bundler", () => {
+  itBundled("identity macro", {
+    files: {
+      "/entry.ts": /* js */ `
+        import {identity} from "./macros.ts" with {type: "macro"};
+        console.log(identity(100));
+      `,
+      "/macros.ts": macros,
+    },
+    run: {
+      stdout: "100",
+    },
+  });
+
+  itBundled("file macro", {
+    files: {
+      "/entry.ts": /* js */ `
+        import {file} from "./macros.ts" with {type: "macro"};
+        console.log(file());
+      `,
+      "/macros.ts": macros,
+    },
+    run: {
+      stdout: "hello world\n123456\n",
+    },
+  });
+});

test/bundler/fixtures/hello.txt

@@ -0,0 +1,2 @@
+hello world
+123456