1 files changed, 27 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/wasm/prototypes.js b/js/src/jit-test/tests/wasm/prototypes.js
new file mode 100644
index 0000000000..2c57009b2c
--- /dev/null
+++ b/js/src/jit-test/tests/wasm/prototypes.js
@@ -0,0 +1,27 @@
+class _Module extends WebAssembly.Module {}
+class _Instance extends WebAssembly.Instance {}
+class _Memory extends WebAssembly.Memory {}
+class _Table extends WebAssembly.Table {}
+class _Global extends WebAssembly.Global {}
+
+let binary = wasmTextToBinary('(module)');
+
+let module = new _Module(binary);
+assertEq(module instanceof _Module, true);
+assertEq(module instanceof WebAssembly.Module, true);
+
+let instance = new _Instance(module);
+assertEq(instance instanceof _Instance, true);
+assertEq(instance instanceof WebAssembly.Instance, true);
+
+let memory = new _Memory({initial: 0, maximum: 1});
+assertEq(memory instanceof _Memory, true);
+assertEq(memory instanceof WebAssembly.Memory, true);
+
+let table = new _Table({initial: 0, element: 'anyfunc'});
+assertEq(table instanceof _Table, true);
+assertEq(table instanceof WebAssembly.Table, true);
+
+let global = new _Global({value: 'i32', mutable: false}, 0);
+assertEq(global instanceof _Global, true);
+assertEq(global instanceof WebAssembly.Global, true);