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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.
// Flags: --expose-wasm --experimental-wasm-eh
load("test/mjsunit/wasm/wasm-constants.js");
load("test/mjsunit/wasm/wasm-module-builder.js");
// Helper function to return a new exported exception with the {kSig_v_v} type
// signature from an anonymous module. The underlying module is thrown away.
// This allows tests to reason solely about importing exceptions.
function NewExportedException() {
let builder = new WasmModuleBuilder();
let except = builder.addException(kSig_v_v);
builder.addExportOfKind("ex", kExternalException, except);
let instance = builder.instantiate();
return instance.exports.ex;
}
(function TestImportSimple() {
print(arguments.callee.name);
let exported = NewExportedException();
let builder = new WasmModuleBuilder();
let except = builder.addImportedException("m", "ex", kSig_v_v);
assertDoesNotThrow(() => builder.instantiate({ m: { ex: exported }}));
})();
(function TestImportMultiple() {
print(arguments.callee.name);
let exported = NewExportedException();
let builder = new WasmModuleBuilder();
let except1 = builder.addImportedException("m", "ex1", kSig_v_v);
let except2 = builder.addImportedException("m", "ex2", kSig_v_v);
let except3 = builder.addException(kSig_v_v);
builder.addExportOfKind("ex2", kExternalException, except2);
builder.addExportOfKind("ex3", kExternalException, except3);
let instance = builder.instantiate({ m: { ex1: exported, ex2: exported }});
assertTrue(except1 < except3 && except2 < except3);
assertEquals(undefined, instance.exports.ex1);
assertSame(exported, instance.exports.ex2);
assertNotSame(exported, instance.exports.ex3);
})();
(function TestImportMissing() {
print(arguments.callee.name);
let builder = new WasmModuleBuilder();
let except = builder.addImportedException("m", "ex", kSig_v_v);
assertThrows(
() => builder.instantiate({}), TypeError,
/module is not an object or function/);
assertThrows(
() => builder.instantiate({ m: {}}), WebAssembly.LinkError,
/exception import requires a WebAssembly.Exception/);
})();
(function TestImportValueMismatch() {
print(arguments.callee.name);
let builder = new WasmModuleBuilder();
let except = builder.addImportedException("m", "ex", kSig_v_v);
assertThrows(
() => builder.instantiate({ m: { ex: 23 }}), WebAssembly.LinkError,
/exception import requires a WebAssembly.Exception/);
assertThrows(
() => builder.instantiate({ m: { ex: {} }}), WebAssembly.LinkError,
/exception import requires a WebAssembly.Exception/);
var monkey = Object.create(NewExportedException());
assertThrows(
() => builder.instantiate({ m: { ex: monkey }}), WebAssembly.LinkError,
/exception import requires a WebAssembly.Exception/);
})();
(function TestImportSignatureMismatch() {
print(arguments.callee.name);
let exported = NewExportedException();
let builder = new WasmModuleBuilder();
let except = builder.addImportedException("m", "ex", kSig_v_i);
assertThrows(
() => builder.instantiate({ m: { ex: exported }}), WebAssembly.LinkError,
/imported exception does not match the expected type/);
})();
(function TestImportModuleGetImports() {
print(arguments.callee.name);
let builder = new WasmModuleBuilder();
let except = builder.addImportedException("m", "ex", kSig_v_v);
let module = new WebAssembly.Module(builder.toBuffer());
let imports = WebAssembly.Module.imports(module);
assertArrayEquals([{ module: "m", name: "ex", kind: "exception" }], imports);
})();
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