1 files changed, 64 insertions, 0 deletions
diff --git a/testing/web-platform/tests/wasm/jsapi/memory/buffer.any.js b/testing/web-platform/tests/wasm/jsapi/memory/buffer.any.js
new file mode 100644
index 0000000000..fb1d1200b8
--- /dev/null
+++ b/testing/web-platform/tests/wasm/jsapi/memory/buffer.any.js
@@ -0,0 +1,64 @@
+// META: global=window,dedicatedworker,jsshell
+
+test(() => {
+  const thisValues = [
+    undefined,
+    null,
+    true,
+    "",
+    Symbol(),
+    1,
+    {},
+    WebAssembly.Memory,
+    WebAssembly.Memory.prototype,
+  ];
+
+  const desc = Object.getOwnPropertyDescriptor(WebAssembly.Memory.prototype, "buffer");
+  assert_equals(typeof desc, "object");
+
+  const getter = desc.get;
+  assert_equals(typeof getter, "function");
+
+  assert_equals(typeof desc.set, "undefined");
+
+  for (const thisValue of thisValues) {
+    assert_throws_js(TypeError, () => getter.call(thisValue), `this=${format_value(thisValue)}`);
+  }
+}, "Branding");
+
+test(() => {
+  const argument = { "initial": 0 };
+  const memory = new WebAssembly.Memory(argument);
+  const buffer = memory.buffer;
+
+  const desc = Object.getOwnPropertyDescriptor(WebAssembly.Memory.prototype, "buffer");
+  assert_equals(typeof desc, "object");
+
+  const getter = desc.get;
+  assert_equals(typeof getter, "function");
+
+  assert_equals(getter.call(memory, {}), buffer);
+}, "Stray argument");
+
+test(() => {
+  const argument = { "initial": 0 };
+  const memory = new WebAssembly.Memory(argument);
+  const memory2 = new WebAssembly.Memory(argument);
+  const buffer = memory.buffer;
+  assert_not_equals(buffer, memory2.buffer, "Need two distinct buffers");
+  memory.buffer = memory2.buffer;
+  assert_equals(memory.buffer, buffer, "Should not change the buffer");
+}, "Setting (sloppy mode)");
+
+test(() => {
+  const argument = { "initial": 0 };
+  const memory = new WebAssembly.Memory(argument);
+  const memory2 = new WebAssembly.Memory(argument);
+  const buffer = memory.buffer;
+  assert_not_equals(buffer, memory2.buffer, "Need two distinct buffers");
+  assert_throws_js(TypeError, () => {
+    "use strict";
+    memory.buffer = memory2.buffer;
+  });
+  assert_equals(memory.buffer, buffer, "Should not change the buffer");
+}, "Setting (strict mode)");