1 files changed, 17 insertions, 0 deletions
diff --git a/test/js/web/fetch/body-mixin-errors.test.ts b/test/js/web/fetch/body-mixin-errors.test.ts
new file mode 100644
index 000000000..f57bbc56c
--- /dev/null
+++ b/test/js/web/fetch/body-mixin-errors.test.ts
@@ -0,0 +1,17 @@
+import { it, describe, expect } from "bun:test";
+
+describe("body-mixin-errors", () => {
+  it("should fail when bodyUsed", async () => {
+    var res = new Response("a");
+    expect(res.bodyUsed).toBe(false);
+    await res.text();
+    expect(res.bodyUsed).toBe(true);
+
+    try {
+      await res.text();
+      throw new Error("should not get here");
+    } catch (e: any) {
+      expect(e.message).toBe("Body already used");
+    }
+  });
+});