6fa656fde2
Without this check, instantiation of the wasm module would fail on DefineOwnProperty on the exports object for the duplicate export. Now we detect this as validation error. R=rossberg@chromium.org, titzer@chromium.org, ahaas@chromium.org Review-Url: https://codereview.chromium.org/2065043002 Cr-Commit-Position: refs/heads/master@{#37038}
90 lines
2.2 KiB
JavaScript
90 lines
2.2 KiB
JavaScript
// Copyright 2016 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --expose-wasm
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load("test/mjsunit/wasm/wasm-constants.js");
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load("test/mjsunit/wasm/wasm-module-builder.js");
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(function testExportedMain() {
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var kReturnValue = 88;
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var builder = new WasmModuleBuilder();
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builder.addFunction("main", kSig_i)
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.addBody([
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kExprI8Const,
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kReturnValue,
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kExprReturn, kArity1
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])
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.exportFunc();
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var module = builder.instantiate();
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assertEquals("object", typeof module.exports);
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assertEquals("function", typeof module.exports.main);
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assertEquals(kReturnValue, module.exports.main());
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})();
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(function testExportedTwice() {
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var kReturnValue = 99;
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var builder = new WasmModuleBuilder();
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builder.addFunction("main", kSig_i)
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.addBody([
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kExprI8Const,
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kReturnValue,
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kExprReturn, kArity1
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])
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.exportAs("blah")
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.exportAs("foo");
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var module = builder.instantiate();
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assertEquals("object", typeof module.exports);
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assertEquals("function", typeof module.exports.blah);
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assertEquals("function", typeof module.exports.foo);
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assertEquals(kReturnValue, module.exports.foo());
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assertEquals(kReturnValue, module.exports.blah());
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})();
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(function testNumericName() {
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var kReturnValue = 93;
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var builder = new WasmModuleBuilder();
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builder.addFunction("main", kSig_i)
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.addBody([
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kExprI8Const,
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kReturnValue,
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kExprReturn, kArity1
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])
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.exportAs("0");
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var module = builder.instantiate();
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assertEquals("object", typeof module.exports);
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assertEquals("function", typeof module.exports["0"]);
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assertEquals(kReturnValue, module.exports["0"]());
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})();
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(function testExportNameClash() {
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var builder = new WasmModuleBuilder();
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builder.addFunction("one", kSig_v_v).addBody([kExprNop]).exportAs("main");
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builder.addFunction("two", kSig_v_v).addBody([kExprNop]).exportAs("other");
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builder.addFunction("three", kSig_v_v).addBody([kExprNop]).exportAs("main");
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try {
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builder.instantiate();
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assertUnreachable("should have thrown an exception");
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} catch (e) {
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assertContains("Duplicate export", e.toString());
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}
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})();
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