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// Copyright 2018 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// The test needs --wasm-tier-up because we can't serialize and deserialize
// Liftoff code.
// Flags: --allow-natives-syntax --experimental-wasm-reftypes --wasm-tier-up
load("test/mjsunit/wasm/wasm-module-builder.js");
(function testExternRefNull() {
const builder = new WasmModuleBuilder();
builder.addFunction('main', kSig_r_v)
.addBody([kExprRefNull, kWasmExternRef])
.exportFunc();
var wire_bytes = builder.toBuffer();
var module = new WebAssembly.Module(wire_bytes);
var buffer = %SerializeWasmModule(module);
module = %DeserializeWasmModule(buffer, wire_bytes);
var instance = new WebAssembly.Instance(module);
assertEquals(null, instance.exports.main());
})();
(function testExternRefIsNull() {
const builder = new WasmModuleBuilder();
builder.addFunction('main', kSig_i_r)
.addBody([kExprLocalGet, 0, kExprRefIsNull])
.exportFunc();
var wire_bytes = builder.toBuffer();
var module = new WebAssembly.Module(wire_bytes);
var buffer = %SerializeWasmModule(module);
module = %DeserializeWasmModule(buffer, wire_bytes);
var instance = new WebAssembly.Instance(module);
assertEquals(0, instance.exports.main({'hello' : 'world'}));
assertEquals(0, instance.exports.main(1234));
assertEquals(0, instance.exports.main(0));
assertEquals(0, instance.exports.main(123.4));
assertEquals(0, instance.exports.main(undefined));
assertEquals(1, instance.exports.main(null));
assertEquals(0, instance.exports.main(print));
})();
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