70 lines
2.2 KiB
JavaScript
70 lines
2.2 KiB
JavaScript
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// Copyright 2020 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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// Will be used in the tests
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function foo() {}
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function wrapInLazyFunction(s) {
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// Use an async function, since some tests use the await keyword.
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return "async function test() { " + s + "}";
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}
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function wrapInEagerFunction(s) {
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// Use an async function, since some tests use the await keyword. Await the
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// result, so that we get the error right away.
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return "await (async function test() { " + s + "})();";
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}
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function assertEarlyError(s) {
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assertThrows(wrapInLazyFunction(s), SyntaxError);
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}
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function assertLateError(s) {
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assertDoesNotThrow(wrapInLazyFunction(s));
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assertThrows(wrapInEagerFunction(s), ReferenceError);
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}
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// Web compatibility:
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assertLateError("foo() = 0;");
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assertLateError("foo()++;");
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assertLateError("foo()--;");
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assertLateError("++foo();");
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assertLateError("--foo();");
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assertLateError("foo() = 1;");
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assertLateError("foo() += 1;");
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assertLateError("foo() -= 1;");
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assertLateError("foo() *= 1;");
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assertLateError("foo() /= 1;");
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assertLateError("for (foo() = 0; ; ) {}");
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assertLateError("for ( ; ; foo() = 0) {}");
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assertLateError("for (foo() of []) {}");
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assertLateError("for (foo() in {}) {}");
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assertLateError("for await (foo() of []) {}");
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// These are early errors though:
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assertEarlyError("for (let foo() = 0; ;) {}");
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assertEarlyError("for (const foo() = 0; ;) {}");
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assertEarlyError("for (var foo() = 0; ;) {}");
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// Modern language features:
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// Tagged templates
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assertEarlyError("foo() `foo` ++;");
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assertEarlyError("foo() `foo` --;");
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assertEarlyError("++ foo() `foo`;");
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assertEarlyError("-- foo() `foo`;");
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assertEarlyError("foo() `foo` = 1;");
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assertEarlyError("foo() `foo` += 1;");
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assertEarlyError("foo() `foo` -= 1;");
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assertEarlyError("foo() `foo` *= 1;");
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assertEarlyError("foo() `foo` /= 1;");
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assertEarlyError("for (foo() `foo` = 0; ; ) {}");
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assertEarlyError("for (; ; foo() `foo` = 0) {}");
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// Logical assignment
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assertEarlyError("foo() &&= 1;");
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assertEarlyError("foo() ||= 1;");
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assertEarlyError("foo() ??= 1;");
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assertEarlyError("for (foo() &&= 0; ;) {}");
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assertEarlyError("for ( ; ; foo() &&= 0) {}");
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