1 files changed, 19 insertions, 0 deletions
diff --git a/test/bun.js/globals.test.js b/test/bun.js/globals.test.js
index b498e0e8e..68547ee21 100644
--- a/test/bun.js/globals.test.js
+++ b/test/bun.js/globals.test.js
@@ -22,6 +22,25 @@ it("extendable", () => {
   expect(true).toBe(true);
 });
 
+it("writable", () => {
+  const classes = [
+    // ["Blob", Blob],
+    ["TextDecoder", TextDecoder],
+    // ["TextEncoder", TextEncoder],
+    ["Request", Request],
+    ["Response", Response],
+    // ["Headers", Headers],
+    // ["HTMLRewriter", HTMLRewriter],
+    // ["Transpiler", Bun.Transpiler],
+  ];
+  for (let [name, Class] of classes) {
+    globalThis[name] = 123;
+    expect(globalThis[name]).toBe(123);
+    globalThis[name] = Class;
+    expect(globalThis[name]).toBe(Class);
+  }
+});
+
 it("name", () => {
   const classes = [
     ["Blob", Blob],