AuroraMiddleware/v8
1
0
Fork 0
Code Issues 2 Pull Requests Releases Wiki Activity
878963a8a5
v8/test/mjsunit/strict-mode.js
arv b004b1d821 Move object literal checking into checker classes 
This removes the duplicate property check from object literals.

Instead we repurpose the ObjectLiteralChecker into two cases, implemented
by two subclasses to ObjectLiteralCheckerBase called ObjectLiteralChecker
and ClassLiteralChecker.

The object literal checker now only checks for duplicate __proto__ fields in
object literals.

The class literal checker checks for duplicate constructors, non constructor
fields named constructor as well as static properties named prototype.

BUG=v8:3819
LOG=Y
R=adamk, dslomov@chromium.org

Review URL: https://codereview.chromium.org/873823003

Cr-Commit-Position: refs/heads/master@{#26336}
2015-01-29 23:12:43 +00:00

1222 lines
41 KiB
JavaScript
Raw Blame History

// Copyright 2011 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Flags: --turbo-deoptimization --noharmony-scoping
// Flags: --noharmony-classes --noharmony-object-literals
function CheckStrictMode(code, exception) {
assertDoesNotThrow(code);
assertThrows("'use strict';\n" + code, exception);
assertThrows('"use strict";\n' + code, exception);
assertDoesNotThrow("\
function outer() {\
function inner() {\n"
+ code +
"\n}\
}");
assertThrows("\
function outer() {\
'use strict';\
function inner() {\n"
+ code +
"\n}\
}", exception);
}
function CheckFunctionConstructorStrictMode() {
var args = [];
for (var i = 0; i < arguments.length; i ++) {
args[i] = arguments[i];
}
// Create non-strict function. No exception.
args[arguments.length] = "";
assertDoesNotThrow(function() {
Function.apply(this, args);
});
// Create strict mode function. Exception expected.
args[arguments.length] = "'use strict';";
assertThrows(function() {
Function.apply(this, args);
}, SyntaxError);
}
// Incorrect 'use strict' directive.
(function UseStrictEscape() {
"use\\x20strict";
with ({}) {};
})();
// Incorrectly place 'use strict' directive.
assertThrows("function foo (x) 'use strict'; {}", SyntaxError);
// 'use strict' in non-directive position.
(function UseStrictNonDirective() {
void(0);
"use strict";
with ({}) {};
})();
// Multiple directives, including "use strict".
assertThrows('\
"directive 1";\
"another directive";\
"use strict";\
"directive after strict";\
"and one more";\
with({}) {}', SyntaxError);
// 'with' disallowed in strict mode.
CheckStrictMode("with({}) {}", SyntaxError);
// Function named 'eval'.
CheckStrictMode("function eval() {}", SyntaxError);
// Function named 'arguments'.
CheckStrictMode("function arguments() {}", SyntaxError);
// Function parameter named 'eval'.
CheckStrictMode("function foo(a, b, eval, c, d) {}", SyntaxError);
// Function parameter named 'arguments'.
CheckStrictMode("function foo(a, b, arguments, c, d) {}", SyntaxError);
// Property accessor parameter named 'eval'.
CheckStrictMode("var o = { set foo(eval) {} }", SyntaxError);
// Property accessor parameter named 'arguments'.
CheckStrictMode("var o = { set foo(arguments) {} }", SyntaxError);
// Duplicate function parameter name.
CheckStrictMode("function foo(a, b, c, d, b) {}", SyntaxError);
// Function constructor: eval parameter name.
CheckFunctionConstructorStrictMode("eval");
// Function constructor: arguments parameter name.
CheckFunctionConstructorStrictMode("arguments");
// Function constructor: duplicate parameter name.
CheckFunctionConstructorStrictMode("a", "b", "c", "b");
CheckFunctionConstructorStrictMode("a,b,c,b");
// catch(eval)
CheckStrictMode("try{}catch(eval){};", SyntaxError);
// catch(arguments)
CheckStrictMode("try{}catch(arguments){};", SyntaxError);
// var eval
CheckStrictMode("var eval;", SyntaxError);
// var arguments
CheckStrictMode("var arguments;", SyntaxError);
// Strict mode applies to the function in which the directive is used..
assertThrows('\
function foo(eval) {\
"use strict";\
}', SyntaxError);
// Strict mode doesn't affect the outer stop of strict code.
(function NotStrict(eval) {
function Strict() {
"use strict";
}
with ({}) {};
})();
// Octal literal
CheckStrictMode("var x = 012");
CheckStrictMode("012");
CheckStrictMode("'Hello octal\\032'");
CheckStrictMode("function octal() { return 012; }");
CheckStrictMode("function octal() { return '\\032'; }");
(function ValidEscape() {
"use strict";
var x = '\0';
var y = "\0";
})();
// Octal before "use strict"
assertThrows('\
function strict() {\
"octal\\032directive";\
"use strict";\
}', SyntaxError);
(function StrictModeNonDuplicate() {
"use strict";
var x = { 123 : 1, "0123" : 2 };
var x = {
123: 1,
'123.00000000000000000000000000000000000000000000000000000000000000000001':
2
};
})();
// Duplicate data properties are allowed in ES6
(function StrictModeDuplicateES6() {
'use strict';
var x = {
123: 1,
123.00000000000000000000000000000000000000000000000000000000000000000001: 2
};
var x = { dupe : 1, nondupe: 3, dupe : 2 };
var x = { '1234' : 1, '2345' : 2, '1234' : 3 };
var x = { '1234' : 1, '2345' : 2, 1234 : 3 };
var x = { 3.14 : 1, 2.71 : 2, 3.14 : 3 };
var x = { 3.14 : 1, '3.14' : 2 };
var x = { get foo() { }, get foo() { } };
var x = { get foo(){}, get 'foo'(){}};
var x = { get 12(){}, get '12'(){}};
// Two setters
var x = { set foo(v) { }, set foo(v) { } };
var x = { set foo(v) { }, set 'foo'(v) { } };
var x = { set 13(v) { }, set '13'(v) { } };
// Setter and data
var x = { foo: 'data', set foo(v) { } };
var x = { set foo(v) { }, foo: 'data' };
var x = { foo: 'data', set 'foo'(v) { } };
var x = { set foo(v) { }, 'foo': 'data' };
var x = { 'foo': 'data', set foo(v) { } };
var x = { set 'foo'(v) { }, foo: 'data' };
var x = { 'foo': 'data', set 'foo'(v) { } };
var x = { set 'foo'(v) { }, 'foo': 'data' };
var x = { 12: 1, set '12'(v){}};
var x = { 12: 1, set 12(v){}};
var x = { '12': 1, set '12'(v){}};
var x = { '12': 1, set 12(v){}};
// Getter and data
var x = { foo: 'data', get foo() { } };
var x = { get foo() { }, foo: 'data' };
var x = { 'foo': 'data', get foo() { } };
var x = { get 'foo'() { }, 'foo': 'data' };
var x = { '12': 1, get '12'(){}};
var x = { '12': 1, get 12(){}};
})();
// Assignment to eval or arguments
CheckStrictMode("function strict() { eval = undefined; }", SyntaxError);
CheckStrictMode("function strict() { arguments = undefined; }", SyntaxError);
CheckStrictMode("function strict() { print(eval = undefined); }", SyntaxError);
CheckStrictMode("function strict() { print(arguments = undefined); }",
SyntaxError);
CheckStrictMode("function strict() { var x = eval = undefined; }", SyntaxError);
CheckStrictMode("function strict() { var x = arguments = undefined; }",
SyntaxError);
// Compound assignment to eval or arguments
CheckStrictMode("function strict() { eval *= undefined; }", SyntaxError);
CheckStrictMode("function strict() { arguments /= undefined; }", SyntaxError);
CheckStrictMode("function strict() { print(eval %= undefined); }", SyntaxError);
CheckStrictMode("function strict() { print(arguments %= undefined); }",
SyntaxError);
CheckStrictMode("function strict() { var x = eval += undefined; }",
SyntaxError);
CheckStrictMode("function strict() { var x = arguments -= undefined; }",
SyntaxError);
CheckStrictMode("function strict() { eval <<= undefined; }", SyntaxError);
CheckStrictMode("function strict() { arguments >>= undefined; }", SyntaxError);
CheckStrictMode("function strict() { print(eval >>>= undefined); }",
SyntaxError);
CheckStrictMode("function strict() { print(arguments &= undefined); }",
SyntaxError);
CheckStrictMode("function strict() { var x = eval ^= undefined; }",
SyntaxError);
CheckStrictMode("function strict() { var x = arguments |= undefined; }",
SyntaxError);
// Postfix increment with eval or arguments
CheckStrictMode("function strict() { eval++; }", SyntaxError);
CheckStrictMode("function strict() { arguments++; }", SyntaxError);
CheckStrictMode("function strict() { print(eval++); }", SyntaxError);
CheckStrictMode("function strict() { print(arguments++); }", SyntaxError);
CheckStrictMode("function strict() { var x = eval++; }", SyntaxError);
CheckStrictMode("function strict() { var x = arguments++; }", SyntaxError);
// Postfix decrement with eval or arguments
CheckStrictMode("function strict() { eval--; }", SyntaxError);
CheckStrictMode("function strict() { arguments--; }", SyntaxError);
CheckStrictMode("function strict() { print(eval--); }", SyntaxError);
CheckStrictMode("function strict() { print(arguments--); }", SyntaxError);
CheckStrictMode("function strict() { var x = eval--; }", SyntaxError);
CheckStrictMode("function strict() { var x = arguments--; }", SyntaxError);
// Prefix increment with eval or arguments
CheckStrictMode("function strict() { ++eval; }", SyntaxError);
CheckStrictMode("function strict() { ++arguments; }", SyntaxError);
CheckStrictMode("function strict() { print(++eval); }", SyntaxError);
CheckStrictMode("function strict() { print(++arguments); }", SyntaxError);
CheckStrictMode("function strict() { var x = ++eval; }", SyntaxError);
CheckStrictMode("function strict() { var x = ++arguments; }", SyntaxError);
// Prefix decrement with eval or arguments
CheckStrictMode("function strict() { --eval; }", SyntaxError);
CheckStrictMode("function strict() { --arguments; }", SyntaxError);
CheckStrictMode("function strict() { print(--eval); }", SyntaxError);
CheckStrictMode("function strict() { print(--arguments); }", SyntaxError);
CheckStrictMode("function strict() { var x = --eval; }", SyntaxError);
CheckStrictMode("function strict() { var x = --arguments; }", SyntaxError);
// Use of const in strict mode is disallowed in anticipation of ES Harmony.
CheckStrictMode("const x = 0;", SyntaxError);
CheckStrictMode("for (const x = 0; false;) {}", SyntaxError);
CheckStrictMode("function strict() { const x = 0; }", SyntaxError);
// Strict mode only allows functions in SourceElements
CheckStrictMode("if (true) { function invalid() {} }", SyntaxError);
CheckStrictMode("for (;false;) { function invalid() {} }", SyntaxError);
CheckStrictMode("{ function invalid() {} }", SyntaxError);
CheckStrictMode("try { function invalid() {} } catch(e) {}", SyntaxError);
CheckStrictMode("try { } catch(e) { function invalid() {} }", SyntaxError);
CheckStrictMode("function outer() {{ function invalid() {} }}", SyntaxError);
// Delete of an unqualified identifier
CheckStrictMode("delete unqualified;", SyntaxError);
CheckStrictMode("function strict() { delete unqualified; }", SyntaxError);
CheckStrictMode("function function_name() { delete function_name; }",
SyntaxError);
CheckStrictMode("function strict(parameter) { delete parameter; }",
SyntaxError);
CheckStrictMode("function strict() { var variable; delete variable; }",
SyntaxError);
CheckStrictMode("var variable; delete variable;", SyntaxError);
(function TestStrictDelete() {
"use strict";
// "delete this" is allowed in strict mode and should work.
function strict_delete() { delete this; }
strict_delete();
})();
// Prefix unary operators other than delete, ++, -- are valid in strict mode
(function StrictModeUnaryOperators() {
"use strict";
var x = [void eval, typeof eval, +eval, -eval, ~eval, !eval];
var y = [void arguments, typeof arguments,
+arguments, -arguments, ~arguments, !arguments];
})();
// 7.6.1.2 Future Reserved Words in strict mode
var future_strict_reserved_words = [
"implements",
"interface",
"let",
"package",
"private",
"protected",
"public",
"static",
"yield" ];
function testFutureStrictReservedWord(word) {
// Simple use of each reserved word
CheckStrictMode("var " + word + " = 1;", SyntaxError);
CheckStrictMode("typeof (" + word + ");", SyntaxError);
// object literal properties
eval("var x = { " + word + " : 42 };");
eval("var x = { get " + word + " () {} };");
eval("var x = { set " + word + " (value) {} };");
eval("var x = { get " + word + " () { 'use strict'; } };");
eval("var x = { set " + word + " (value) { 'use strict'; } };");
// object literal with string literal property names
eval("var x = { '" + word + "' : 42 };");
eval("var x = { get '" + word + "' () { } };");
eval("var x = { set '" + word + "' (value) { } };");
eval("var x = { get '" + word + "' () { 'use strict'; } };");
eval("var x = { set '" + word + "' (value) { 'use strict'; } };");
// Function names and arguments, strict and non-strict contexts
CheckStrictMode("function " + word + " () {}", SyntaxError);
CheckStrictMode("function foo (" + word + ") {}", SyntaxError);
CheckStrictMode("function foo (" + word + ", " + word + ") {}", SyntaxError);
CheckStrictMode("function foo (a, " + word + ") {}", SyntaxError);
CheckStrictMode("function foo (" + word + ", a) {}", SyntaxError);
CheckStrictMode("function foo (a, " + word + ", b) {}", SyntaxError);
CheckStrictMode("var foo = function (" + word + ") {}", SyntaxError);
// Function names and arguments when the body is strict
assertThrows("function " + word + " () { 'use strict'; }", SyntaxError);
assertThrows("function foo (" + word + ", " + word + ") { 'use strict'; }",
SyntaxError);
assertThrows("function foo (a, " + word + ") { 'use strict'; }", SyntaxError);
assertThrows("function foo (" + word + ", a) { 'use strict'; }", SyntaxError);
assertThrows("function foo (a, " + word + ", b) { 'use strict'; }",
SyntaxError);
assertThrows("var foo = function (" + word + ") { 'use strict'; }",
SyntaxError);
// setter parameter when the body is strict
CheckStrictMode("var x = { set foo(" + word + ") {} };", SyntaxError);
assertThrows("var x = { set foo(" + word + ") { 'use strict'; } };",
SyntaxError);
}
for (var i = 0; i < future_strict_reserved_words.length; i++) {
testFutureStrictReservedWord(future_strict_reserved_words[i]);
}
function testAssignToUndefined(test, should_throw) {
try {
test();
} catch (e) {
assertTrue(should_throw, "strict mode");
assertInstanceof(e, ReferenceError, "strict mode");
return;
}
assertFalse(should_throw, "strict mode");
}
function repeat(n, f) {
for (var i = 0; i < n; i ++) { f(); }
}
function assignToUndefined() {
"use strict";
possibly_undefined_variable_for_strict_mode_test = "should throw?";
}
testAssignToUndefined(assignToUndefined, true);
testAssignToUndefined(assignToUndefined, true);
testAssignToUndefined(assignToUndefined, true);
possibly_undefined_variable_for_strict_mode_test = "value";
testAssignToUndefined(assignToUndefined, false);
testAssignToUndefined(assignToUndefined, false);
testAssignToUndefined(assignToUndefined, false);
delete possibly_undefined_variable_for_strict_mode_test;
testAssignToUndefined(assignToUndefined, true);
testAssignToUndefined(assignToUndefined, true);
testAssignToUndefined(assignToUndefined, true);
repeat(10, function() { testAssignToUndefined(assignToUndefined, true); });
possibly_undefined_variable_for_strict_mode_test = "value";
repeat(10, function() { testAssignToUndefined(assignToUndefined, false); });
delete possibly_undefined_variable_for_strict_mode_test;
repeat(10, function() { testAssignToUndefined(assignToUndefined, true); });
possibly_undefined_variable_for_strict_mode_test = undefined;
repeat(10, function() { testAssignToUndefined(assignToUndefined, false); });
function assignToUndefinedWithEval() {
"use strict";
possibly_undefined_variable_for_strict_mode_test_with_eval = "should throw?";
eval("");
}
testAssignToUndefined(assignToUndefinedWithEval, true);
testAssignToUndefined(assignToUndefinedWithEval, true);
testAssignToUndefined(assignToUndefinedWithEval, true);
possibly_undefined_variable_for_strict_mode_test_with_eval = "value";
testAssignToUndefined(assignToUndefinedWithEval, false);
testAssignToUndefined(assignToUndefinedWithEval, false);
testAssignToUndefined(assignToUndefinedWithEval, false);
delete possibly_undefined_variable_for_strict_mode_test_with_eval;
testAssignToUndefined(assignToUndefinedWithEval, true);
testAssignToUndefined(assignToUndefinedWithEval, true);
testAssignToUndefined(assignToUndefinedWithEval, true);
repeat(10, function() {
testAssignToUndefined(assignToUndefinedWithEval, true);
});
possibly_undefined_variable_for_strict_mode_test_with_eval = "value";
repeat(10, function() {
testAssignToUndefined(assignToUndefinedWithEval, false);
});
delete possibly_undefined_variable_for_strict_mode_test_with_eval;
repeat(10, function() {
testAssignToUndefined(assignToUndefinedWithEval, true);
});
possibly_undefined_variable_for_strict_mode_test_with_eval = undefined;
repeat(10, function() {
testAssignToUndefined(assignToUndefinedWithEval, false);
});
(function testDeleteNonConfigurable() {
function delete_property(o) {
"use strict";
delete o.property;
}
function delete_element(o, i) {
"use strict";
delete o[i];
}
var object = {};
Object.defineProperty(object, "property", { value: "property_value" });
Object.defineProperty(object, "1", { value: "one" });
Object.defineProperty(object, 7, { value: "seven" });
Object.defineProperty(object, 3.14, { value: "pi" });
assertThrows(function() { delete_property(object); }, TypeError);
assertEquals(object.property, "property_value");
assertThrows(function() { delete_element(object, "1"); }, TypeError);
assertThrows(function() { delete_element(object, 1); }, TypeError);
assertEquals(object[1], "one");
assertThrows(function() { delete_element(object, "7"); }, TypeError);
assertThrows(function() { delete_element(object, 7); }, TypeError);
assertEquals(object[7], "seven");
assertThrows(function() { delete_element(object, "3.14"); }, TypeError);
assertThrows(function() { delete_element(object, 3.14); }, TypeError);
assertEquals(object[3.14], "pi");
})();
// Not transforming this in Function.call and Function.apply.
(function testThisTransformCallApply() {
function non_strict() {
return this;
}
function strict() {
"use strict";
return this;
}
var global_object = (function() { return this; })();
var object = {};
// Non-strict call.
assertTrue(non_strict.call(null) === global_object);
assertTrue(non_strict.call(undefined) === global_object);
assertEquals(typeof non_strict.call(7), "object");
assertEquals(typeof non_strict.call("Hello"), "object");
assertTrue(non_strict.call(object) === object);
// Non-strict apply.
assertTrue(non_strict.apply(null) === global_object);
assertTrue(non_strict.apply(undefined) === global_object);
assertEquals(typeof non_strict.apply(7), "object");
assertEquals(typeof non_strict.apply("Hello"), "object");
assertTrue(non_strict.apply(object) === object);
// Strict call.
assertTrue(strict.call(null) === null);
assertTrue(strict.call(undefined) === undefined);
assertEquals(typeof strict.call(7), "number");
assertEquals(typeof strict.call("Hello"), "string");
assertTrue(strict.call(object) === object);
// Strict apply.
assertTrue(strict.apply(null) === null);
assertTrue(strict.apply(undefined) === undefined);
assertEquals(typeof strict.apply(7), "number");
assertEquals(typeof strict.apply("Hello"), "string");
assertTrue(strict.apply(object) === object);
})();
(function testThisTransform() {
try {
function strict() {
"use strict";
return typeof(this);
}
function nonstrict() {
return typeof(this);
}
// Concat to avoid symbol.
var strict_name = "str" + "ict";
var nonstrict_name = "non" + "str" + "ict";
var strict_number = 17;
var nonstrict_number = 19;
var strict_name_get = "str" + "ict" + "get";
var nonstrict_name_get = "non" + "str" + "ict" + "get"
var strict_number_get = 23;
var nonstrict_number_get = 29;
function install(t) {
t.prototype.strict = strict;
t.prototype.nonstrict = nonstrict;
t.prototype[strict_number] = strict;
t.prototype[nonstrict_number] = nonstrict;
Object.defineProperty(t.prototype, strict_name_get,
{ get: function() { return strict; },
configurable: true });
Object.defineProperty(t.prototype, nonstrict_name_get,
{ get: function() { return nonstrict; },
configurable: true });
Object.defineProperty(t.prototype, strict_number_get,
{ get: function() { return strict; },
configurable: true });
Object.defineProperty(t.prototype, nonstrict_number_get,
{ get: function() { return nonstrict; },
configurable: true });
}
function cleanup(t) {
delete t.prototype.strict;
delete t.prototype.nonstrict;
delete t.prototype[strict_number];
delete t.prototype[nonstrict_number];
delete t.prototype[strict_name_get];
delete t.prototype[nonstrict_name_get];
delete t.prototype[strict_number_get];
delete t.prototype[nonstrict_number_get];
}
// Set up fakes
install(String);
install(Number);
install(Boolean)
function callStrict(o) {
return o.strict();
}
function callNonStrict(o) {
return o.nonstrict();
}
function callKeyedStrict(o) {
return o[strict_name]();
}
function callKeyedNonStrict(o) {
return o[nonstrict_name]();
}
function callIndexedStrict(o) {
return o[strict_number]();
}
function callIndexedNonStrict(o) {
return o[nonstrict_number]();
}
function callStrictGet(o) {
return o.strictget();
}
function callNonStrictGet(o) {
return o.nonstrictget();
}
function callKeyedStrictGet(o) {
return o[strict_name_get]();
}
function callKeyedNonStrictGet(o) {
return o[nonstrict_name_get]();
}
function callIndexedStrictGet(o) {
return o[strict_number_get]();
}
function callIndexedNonStrictGet(o) {
return o[nonstrict_number_get]();
}
for (var i = 0; i < 10; i ++) {
assertEquals(("hello").strict(), "string");
assertEquals(("hello").nonstrict(), "object");
assertEquals(("hello")[strict_name](), "string");
assertEquals(("hello")[nonstrict_name](), "object");
assertEquals(("hello")[strict_number](), "string");
assertEquals(("hello")[nonstrict_number](), "object");
assertEquals((10 + i).strict(), "number");
assertEquals((10 + i).nonstrict(), "object");
assertEquals((10 + i)[strict_name](), "number");
assertEquals((10 + i)[nonstrict_name](), "object");
assertEquals((10 + i)[strict_number](), "number");
assertEquals((10 + i)[nonstrict_number](), "object");
assertEquals((true).strict(), "boolean");
assertEquals((true).nonstrict(), "object");
assertEquals((true)[strict_name](), "boolean");
assertEquals((true)[nonstrict_name](), "object");
assertEquals((true)[strict_number](), "boolean");
assertEquals((true)[nonstrict_number](), "object");
assertEquals((false).strict(), "boolean");
assertEquals((false).nonstrict(), "object");
assertEquals((false)[strict_name](), "boolean");
assertEquals((false)[nonstrict_name](), "object");
assertEquals((false)[strict_number](), "boolean");
assertEquals((false)[nonstrict_number](), "object");
assertEquals(callStrict("howdy"), "string");
assertEquals(callNonStrict("howdy"), "object");
assertEquals(callKeyedStrict("howdy"), "string");
assertEquals(callKeyedNonStrict("howdy"), "object");
assertEquals(callIndexedStrict("howdy"), "string");
assertEquals(callIndexedNonStrict("howdy"), "object");
assertEquals(callStrict(17 + i), "number");
assertEquals(callNonStrict(17 + i), "object");
assertEquals(callKeyedStrict(17 + i), "number");
assertEquals(callKeyedNonStrict(17 + i), "object");
assertEquals(callIndexedStrict(17 + i), "number");
assertEquals(callIndexedNonStrict(17 + i), "object");
assertEquals(callStrict(true), "boolean");
assertEquals(callNonStrict(true), "object");
assertEquals(callKeyedStrict(true), "boolean");
assertEquals(callKeyedNonStrict(true), "object");
assertEquals(callIndexedStrict(true), "boolean");
assertEquals(callIndexedNonStrict(true), "object");
assertEquals(callStrict(false), "boolean");
assertEquals(callNonStrict(false), "object");
assertEquals(callKeyedStrict(false), "boolean");
assertEquals(callKeyedNonStrict(false), "object");
assertEquals(callIndexedStrict(false), "boolean");
assertEquals(callIndexedNonStrict(false), "object");
// All of the above, with getters
assertEquals(("hello").strictget(), "string");
assertEquals(("hello").nonstrictget(), "object");
assertEquals(("hello")[strict_name_get](), "string");
assertEquals(("hello")[nonstrict_name_get](), "object");
assertEquals(("hello")[strict_number_get](), "string");
assertEquals(("hello")[nonstrict_number_get](), "object");
assertEquals((10 + i).strictget(), "number");
assertEquals((10 + i).nonstrictget(), "object");
assertEquals((10 + i)[strict_name_get](), "number");
assertEquals((10 + i)[nonstrict_name_get](), "object");
assertEquals((10 + i)[strict_number_get](), "number");
assertEquals((10 + i)[nonstrict_number_get](), "object");
assertEquals((true).strictget(), "boolean");
assertEquals((true).nonstrictget(), "object");
assertEquals((true)[strict_name_get](), "boolean");
assertEquals((true)[nonstrict_name_get](), "object");
assertEquals((true)[strict_number_get](), "boolean");
assertEquals((true)[nonstrict_number_get](), "object");
assertEquals((false).strictget(), "boolean");
assertEquals((false).nonstrictget(), "object");
assertEquals((false)[strict_name_get](), "boolean");
assertEquals((false)[nonstrict_name_get](), "object");
assertEquals((false)[strict_number_get](), "boolean");
assertEquals((false)[nonstrict_number_get](), "object");
assertEquals(callStrictGet("howdy"), "string");
assertEquals(callNonStrictGet("howdy"), "object");
assertEquals(callKeyedStrictGet("howdy"), "string");
assertEquals(callKeyedNonStrictGet("howdy"), "object");
assertEquals(callIndexedStrictGet("howdy"), "string");
assertEquals(callIndexedNonStrictGet("howdy"), "object");
assertEquals(callStrictGet(17 + i), "number");
assertEquals(callNonStrictGet(17 + i), "object");
assertEquals(callKeyedStrictGet(17 + i), "number");
assertEquals(callKeyedNonStrictGet(17 + i), "object");
assertEquals(callIndexedStrictGet(17 + i), "number");
assertEquals(callIndexedNonStrictGet(17 + i), "object");
assertEquals(callStrictGet(true), "boolean");
assertEquals(callNonStrictGet(true), "object");
assertEquals(callKeyedStrictGet(true), "boolean");
assertEquals(callKeyedNonStrictGet(true), "object");
assertEquals(callIndexedStrictGet(true), "boolean");
assertEquals(callIndexedNonStrictGet(true), "object");
assertEquals(callStrictGet(false), "boolean");
assertEquals(callNonStrictGet(false), "object");
assertEquals(callKeyedStrictGet(false), "boolean");
assertEquals(callKeyedNonStrictGet(false), "object");
assertEquals(callIndexedStrictGet(false), "boolean");
assertEquals(callIndexedNonStrictGet(false), "object");
}
} finally {
// Cleanup
cleanup(String);
cleanup(Number);
cleanup(Boolean);
}
})();
(function ObjectEnvironment() {
var o = {};
Object.defineProperty(o, "foo", { value: "FOO", writable: false });
assertThrows(
function () {
with (o) {
(function() {
"use strict";
foo = "Hello";
})();
}
},
TypeError);
})();
(function TestSetPropertyWithoutSetter() {
var o = { get foo() { return "Yey"; } };
assertThrows(
function broken() {
"use strict";
o.foo = (0xBADBAD00 >> 1);
},
TypeError);
})();
(function TestSetPropertyNonConfigurable() {
var frozen = Object.freeze({});
var sealed = Object.seal({});
function strict(o) {
"use strict";
o.property = "value";
}
assertThrows(function() { strict(frozen); }, TypeError);
assertThrows(function() { strict(sealed); }, TypeError);
})();
(function TestAssignmentToReadOnlyProperty() {
"use strict";
var o = {};
Object.defineProperty(o, "property", { value: 7 });
assertThrows(function() { o.property = "new value"; }, TypeError);
assertThrows(function() { o.property += 10; }, TypeError);
assertThrows(function() { o.property -= 10; }, TypeError);
assertThrows(function() { o.property *= 10; }, TypeError);
assertThrows(function() { o.property /= 10; }, TypeError);
assertThrows(function() { o.property++; }, TypeError);
assertThrows(function() { o.property--; }, TypeError);
assertThrows(function() { ++o.property; }, TypeError);
assertThrows(function() { --o.property; }, TypeError);
var name = "prop" + "erty"; // to avoid symbol path.
assertThrows(function() { o[name] = "new value"; }, TypeError);
assertThrows(function() { o[name] += 10; }, TypeError);
assertThrows(function() { o[name] -= 10; }, TypeError);
assertThrows(function() { o[name] *= 10; }, TypeError);
assertThrows(function() { o[name] /= 10; }, TypeError);
assertThrows(function() { o[name]++; }, TypeError);
assertThrows(function() { o[name]--; }, TypeError);
assertThrows(function() { ++o[name]; }, TypeError);
assertThrows(function() { --o[name]; }, TypeError);
assertEquals(o.property, 7);
})();
(function TestAssignmentToReadOnlyLoop() {
var name = "prop" + "erty"; // to avoid symbol path.
var o = {};
Object.defineProperty(o, "property", { value: 7 });
function strict(o, name) {
"use strict";
o[name] = "new value";
}
for (var i = 0; i < 10; i ++) {
var exception = false;
try {
strict(o, name);
} catch(e) {
exception = true;
assertInstanceof(e, TypeError);
}
assertTrue(exception);
}
})();
// Specialized KeyedStoreIC experiencing miss.
(function testKeyedStoreICStrict() {
var o = [9,8,7,6,5,4,3,2,1];
function test(o, i, v) {
"use strict";
o[i] = v;
}
for (var i = 0; i < 10; i ++) {
test(o, 5, 17); // start specialized for smi indices
assertEquals(o[5], 17);
test(o, "a", 19);
assertEquals(o["a"], 19);
test(o, "5", 29);
assertEquals(o[5], 29);
test(o, 100000, 31);
assertEquals(o[100000], 31);
}
})();
(function TestSetElementWithoutSetter() {
"use strict";
var o = { };
Object.defineProperty(o, 0, { get : function() { } });
var zero_smi = 0;
var zero_number = new Number(0);
var zero_symbol = "0";
var zero_string = "-0-".substring(1,2);
assertThrows(function() { o[zero_smi] = "new value"; }, TypeError);
assertThrows(function() { o[zero_number] = "new value"; }, TypeError);
assertThrows(function() { o[zero_symbol] = "new value"; }, TypeError);
assertThrows(function() { o[zero_string] = "new value"; }, TypeError);
})();
(function TestSetElementNonConfigurable() {
"use strict";
var frozen = Object.freeze({});
var sealed = Object.seal({});
var zero_number = 0;
var zero_symbol = "0";
var zero_string = "-0-".substring(1,2);
assertThrows(function() { frozen[zero_number] = "value"; }, TypeError);
assertThrows(function() { sealed[zero_number] = "value"; }, TypeError);
assertThrows(function() { frozen[zero_symbol] = "value"; }, TypeError);
assertThrows(function() { sealed[zero_symbol] = "value"; }, TypeError);
assertThrows(function() { frozen[zero_string] = "value"; }, TypeError);
assertThrows(function() { sealed[zero_string] = "value"; }, TypeError);
})();
(function TestAssignmentToReadOnlyElement() {
"use strict";
var o = {};
Object.defineProperty(o, 7, { value: 17 });
var seven_smi = 7;
var seven_number = new Number(7);
var seven_symbol = "7";
var seven_string = "-7-".substring(1,2);
// Index with number.
assertThrows(function() { o[seven_smi] = "value"; }, TypeError);
assertThrows(function() { o[seven_smi] += 10; }, TypeError);
assertThrows(function() { o[seven_smi] -= 10; }, TypeError);
assertThrows(function() { o[seven_smi] *= 10; }, TypeError);
assertThrows(function() { o[seven_smi] /= 10; }, TypeError);
assertThrows(function() { o[seven_smi]++; }, TypeError);
assertThrows(function() { o[seven_smi]--; }, TypeError);
assertThrows(function() { ++o[seven_smi]; }, TypeError);
assertThrows(function() { --o[seven_smi]; }, TypeError);
assertThrows(function() { o[seven_number] = "value"; }, TypeError);
assertThrows(function() { o[seven_number] += 10; }, TypeError);
assertThrows(function() { o[seven_number] -= 10; }, TypeError);
assertThrows(function() { o[seven_number] *= 10; }, TypeError);
assertThrows(function() { o[seven_number] /= 10; }, TypeError);
assertThrows(function() { o[seven_number]++; }, TypeError);
assertThrows(function() { o[seven_number]--; }, TypeError);
assertThrows(function() { ++o[seven_number]; }, TypeError);
assertThrows(function() { --o[seven_number]; }, TypeError);
assertThrows(function() { o[seven_symbol] = "value"; }, TypeError);
assertThrows(function() { o[seven_symbol] += 10; }, TypeError);
assertThrows(function() { o[seven_symbol] -= 10; }, TypeError);
assertThrows(function() { o[seven_symbol] *= 10; }, TypeError);
assertThrows(function() { o[seven_symbol] /= 10; }, TypeError);
assertThrows(function() { o[seven_symbol]++; }, TypeError);
assertThrows(function() { o[seven_symbol]--; }, TypeError);
assertThrows(function() { ++o[seven_symbol]; }, TypeError);
assertThrows(function() { --o[seven_symbol]; }, TypeError);
assertThrows(function() { o[seven_string] = "value"; }, TypeError);
assertThrows(function() { o[seven_string] += 10; }, TypeError);
assertThrows(function() { o[seven_string] -= 10; }, TypeError);
assertThrows(function() { o[seven_string] *= 10; }, TypeError);
assertThrows(function() { o[seven_string] /= 10; }, TypeError);
assertThrows(function() { o[seven_string]++; }, TypeError);
assertThrows(function() { o[seven_string]--; }, TypeError);
assertThrows(function() { ++o[seven_string]; }, TypeError);
assertThrows(function() { --o[seven_string]; }, TypeError);
assertEquals(o[seven_number], 17);
assertEquals(o[seven_symbol], 17);
assertEquals(o[seven_string], 17);
})();
(function TestAssignmentToReadOnlyLoop() {
"use strict";
var o = {};
Object.defineProperty(o, 7, { value: 17 });
var seven_smi = 7;
var seven_number = new Number(7);
var seven_symbol = "7";
var seven_string = "-7-".substring(1,2);
for (var i = 0; i < 10; i ++) {
assertThrows(function() { o[seven_smi] = "value" }, TypeError);
assertThrows(function() { o[seven_number] = "value" }, TypeError);
assertThrows(function() { o[seven_symbol] = "value" }, TypeError);
assertThrows(function() { o[seven_string] = "value" }, TypeError);
}
assertEquals(o[7], 17);
})();
(function TestAssignmentToStringLength() {
"use strict";
var str_val = "string";
var str_obj = new String(str_val);
var str_cat = str_val + str_val + str_obj;
assertThrows(function() { str_val.length = 1; }, TypeError);
assertThrows(function() { str_obj.length = 1; }, TypeError);
assertThrows(function() { str_cat.length = 1; }, TypeError);
})();
(function TestArgumentsAliasing() {
function strict(a, b) {
"use strict";
a = "c";
b = "d";
return [a, b, arguments[0], arguments[1]];
}
function nonstrict(a, b) {
a = "c";
b = "d";
return [a, b, arguments[0], arguments[1]];
}
assertEquals(["c", "d", "a", "b"], strict("a", "b"));
assertEquals(["c", "d", "c", "d"], nonstrict("a", "b"));
})();
function CheckPillDescriptor(func, name) {
function CheckPill(pill) {
assertEquals("function", typeof pill);
assertInstanceof(pill, Function);
pill.property = "value";
assertEquals(pill.value, undefined);
assertThrows(function() { 'use strict'; pill.property = "value"; },
TypeError);
assertThrows(pill, TypeError);
assertEquals(pill.prototype, (function(){}).prototype);
var d = Object.getOwnPropertyDescriptor(pill, "prototype");
assertFalse(d.writable);
assertFalse(d.configurable);
assertFalse(d.enumerable);
}
var descriptor = Object.getOwnPropertyDescriptor(func, name);
CheckPill(descriptor.get)
CheckPill(descriptor.set);
assertFalse(descriptor.enumerable);
assertFalse(descriptor.configurable);
}
(function TestStrictFunctionPills() {
function strict() {
"use strict";
}
assertThrows(function() { strict.caller; }, TypeError);
assertThrows(function() { strict.arguments; }, TypeError);
assertThrows(function() { strict.caller = 42; }, TypeError);
assertThrows(function() { strict.arguments = 42; }, TypeError);
var another = new Function("'use strict'");
assertThrows(function() { another.caller; }, TypeError);
assertThrows(function() { another.arguments; }, TypeError);
assertThrows(function() { another.caller = 42; }, TypeError);
assertThrows(function() { another.arguments = 42; }, TypeError);
var third = (function() { "use strict"; return function() {}; })();
assertThrows(function() { third.caller; }, TypeError);
assertThrows(function() { third.arguments; }, TypeError);
assertThrows(function() { third.caller = 42; }, TypeError);
assertThrows(function() { third.arguments = 42; }, TypeError);
CheckPillDescriptor(strict, "caller");
CheckPillDescriptor(strict, "arguments");
CheckPillDescriptor(another, "caller");
CheckPillDescriptor(another, "arguments");
CheckPillDescriptor(third, "caller");
CheckPillDescriptor(third, "arguments");
})();
(function TestStrictFunctionWritablePrototype() {
"use strict";
function TheClass() {
}
assertThrows(function() { TheClass.caller; }, TypeError);
assertThrows(function() { TheClass.arguments; }, TypeError);
// Strict functions must have writable prototype.
TheClass.prototype = {
func: function() { return "func_value"; },
get accessor() { return "accessor_value"; },
property: "property_value",
};
var o = new TheClass();
assertEquals(o.func(), "func_value");
assertEquals(o.accessor, "accessor_value");
assertEquals(o.property, "property_value");
})();
(function TestStrictArgumentPills() {
function strict() {
"use strict";
return arguments;
}
var args = strict();
CheckPillDescriptor(args, "caller");
CheckPillDescriptor(args, "callee");
args = strict(17, "value", strict);
assertEquals(17, args[0])
assertEquals("value", args[1])
assertEquals(strict, args[2]);
CheckPillDescriptor(args, "caller");
CheckPillDescriptor(args, "callee");
function outer() {
"use strict";
function inner() {
return arguments;
}
return inner;
}
var args = outer()();
CheckPillDescriptor(args, "caller");
CheckPillDescriptor(args, "callee");
args = outer()(17, "value", strict);
assertEquals(17, args[0])
assertEquals("value", args[1])
assertEquals(strict, args[2]);
CheckPillDescriptor(args, "caller");
CheckPillDescriptor(args, "callee");
})();
(function TestNonStrictFunctionCallerPillSimple() {
function return_my_caller() {
return return_my_caller.caller;
}
function strict() {
"use strict";
return return_my_caller();
}
assertSame(null, strict());
function non_strict() {
return return_my_caller();
}
assertSame(non_strict(), non_strict);
})();
(function TestNonStrictFunctionCallerPill() {
function strict(n) {
"use strict";
return non_strict(n);
}
function recurse(n, then) {
if (n > 0) {
return recurse(n - 1, then);
} else {
return then();
}
}
function non_strict(n) {
return recurse(n, function() { return non_strict.caller; });
}
function test(n) {
return recurse(n, function() { return strict(n); });
}
for (var i = 0; i < 10; i ++) {
assertSame(null, test(i));
}
})();
(function TestNonStrictFunctionCallerDescriptorPill() {
function strict(n) {
"use strict";
return non_strict(n);
}
function recurse(n, then) {
if (n > 0) {
return recurse(n - 1, then);
} else {
return then();
}
}
function non_strict(n) {
return recurse(n, function() {
return Object.getOwnPropertyDescriptor(non_strict, "caller").value;
});
}
function test(n) {
return recurse(n, function() { return strict(n); });
}
for (var i = 0; i < 10; i ++) {
assertSame(null, test(i));
}
})();
(function TestStrictModeEval() {
"use strict";
eval("var eval_local = 10;");
assertThrows(function() { return eval_local; }, ReferenceError);
})();
Reference in New Issue View Git Blame Copy Permalink