From c857e833993ef9aca36c0cae19f78ce2ed61ac58 Mon Sep 17 00:00:00 2001
From: Matthias Liedtke <mliedtke@chromium.org>
Date: Tue, 23 Sep 2025 17:53:30 +0200
Subject: [PATCH 1/4] [js-api] Add test case for externref global

---
 test/js-api/global/constructor.any.js | 28 ++++++++++++++++++++++++++-
 1 file changed, 27 insertions(+), 1 deletion(-)

diff --git a/test/js-api/global/constructor.any.js b/test/js-api/global/constructor.any.js
index 7c2c02c790..27df376110 100644
--- a/test/js-api/global/constructor.any.js
+++ b/test/js-api/global/constructor.any.js
@@ -167,5 +167,31 @@ test(() => {
 
 test(() => {
   const argument = { "value": "v128" };
-  assert_throws_js(TypeError, () =>new WebAssembly.Global(argument));
+  assert_throws_js(TypeError, () => new WebAssembly.Global(argument));
 }, "Construct v128 global");
+
+test(() => {
+  let global = new WebAssembly.Global({value: "externref"}, "initial value");
+  assert_Global(global, "initial value");
+  for (let value of [
+    undefined,
+    null,
+    true,
+    1,
+    -0,
+    1.5,
+    -2n,
+    Symbol("test"),
+    "string",
+    {"an": "object"},
+    () => null
+  ]) {
+    global.value = value;
+    assert_Global(global, value);
+  }
+}, "externref global");
+
+test(() => {
+  let global = new WebAssembly.Global({value: "externref"});
+  assert_Global(global, undefined);
+}, "externref global with default value");

From d82c98bc41deb92ba76d187cae55dab5c2ee457b Mon Sep 17 00:00:00 2001
From: Matthias Liedtke <mliedtke@chromium.org>
Date: Mon, 20 Oct 2025 13:24:15 +0200
Subject: [PATCH 2/4] Only test the constructor

---
 test/js-api/global/constructor.any.js | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/test/js-api/global/constructor.any.js b/test/js-api/global/constructor.any.js
index 27df376110..f3e8f8fd78 100644
--- a/test/js-api/global/constructor.any.js
+++ b/test/js-api/global/constructor.any.js
@@ -8,6 +8,8 @@ function assert_Global(actual, expected) {
 
   assert_equals(actual.value, expected, "value");
   assert_equals(actual.valueOf(), expected, "valueOf");
+  assert_true(Object.is(actual.value, expected), "value Object.is");
+  assert_true(Object.is(actual.valueOf(), expected), "valueOf Object.is");
 }
 
 test(() => {
@@ -171,8 +173,6 @@ test(() => {
 }, "Construct v128 global");
 
 test(() => {
-  let global = new WebAssembly.Global({value: "externref"}, "initial value");
-  assert_Global(global, "initial value");
   for (let value of [
     undefined,
     null,
@@ -186,7 +186,7 @@ test(() => {
     {"an": "object"},
     () => null
   ]) {
-    global.value = value;
+    let global = new WebAssembly.Global({value: "externref"}, value);
     assert_Global(global, value);
   }
 }, "externref global");

From 4cb2ba5e84534f871090d71490ab8fbb346f1fce Mon Sep 17 00:00:00 2001
From: Matthias Liedtke <mliedtke@chromium.org>
Date: Mon, 20 Oct 2025 13:27:58 +0200
Subject: [PATCH 3/4] Add test case for value assignment and valueOf()

---
 test/js-api/global/value-get-set.any.js | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/test/js-api/global/value-get-set.any.js b/test/js-api/global/value-get-set.any.js
index f95b7ca9e3..c4c058285c 100644
--- a/test/js-api/global/value-get-set.any.js
+++ b/test/js-api/global/value-get-set.any.js
@@ -150,3 +150,24 @@ test(() => {
   assert_equals(setter.call(global, 1, {}), undefined);
   assert_equals(global.value, 1);
 }, "Stray argument");
+
+test(() => {
+  let global = new WebAssembly.Global({value: "externref", mutable: true});
+  for (let value of [
+    undefined,
+    null,
+    true,
+    1,
+    -0,
+    1.5,
+    -2n,
+    Symbol("test"),
+    "string",
+    {"an": "object"},
+    () => null
+  ]) {
+    global.value = value;
+    assert_equals(global.value, value);
+    assert_equals(global.valueOf(), value);
+  }
+}, "externref global");

From 76ac446da4c66a6faecf0ee4b7a9b24eac0f50c2 Mon Sep 17 00:00:00 2001
From: Matthias Liedtke <mliedtke@chromium.org>
Date: Mon, 20 Oct 2025 13:41:18 +0200
Subject: [PATCH 4/4] remove Object.is again

---
 test/js-api/global/constructor.any.js | 2 --
 1 file changed, 2 deletions(-)

diff --git a/test/js-api/global/constructor.any.js b/test/js-api/global/constructor.any.js
index f3e8f8fd78..f11ae8af6f 100644
--- a/test/js-api/global/constructor.any.js
+++ b/test/js-api/global/constructor.any.js
@@ -8,8 +8,6 @@ function assert_Global(actual, expected) {
 
   assert_equals(actual.value, expected, "value");
   assert_equals(actual.valueOf(), expected, "valueOf");
-  assert_true(Object.is(actual.value, expected), "value Object.is");
-  assert_true(Object.is(actual.valueOf(), expected), "valueOf Object.is");
 }
 
 test(() => {