ed968b1042
TEST=existing unit tests still pass Review URL: http://codereview.chromium.org/6821009 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7572 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
118 lines
3.9 KiB
JavaScript
118 lines
3.9 KiB
JavaScript
// Copyright 2009 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: --allow-natives-syntax
|
|
|
|
// Test the handling of initialization of deleted const variables.
|
|
// This only makes sense in local scopes since the declaration and
|
|
// initialization of consts in the global scope happen at the same
|
|
// time.
|
|
|
|
function testIntroduceGlobal() {
|
|
var source =
|
|
// Deleting 'x' removes the local const property.
|
|
"delete x;" +
|
|
// Initialization turns into assignment to global 'x'.
|
|
"const x = 3; assertEquals(3, x);" +
|
|
// No constness of the global 'x'.
|
|
"x = 4; assertEquals(4, x);";
|
|
eval(source);
|
|
}
|
|
|
|
testIntroduceGlobal();
|
|
assertEquals(4, x);
|
|
|
|
function testAssignExistingGlobal() {
|
|
var source =
|
|
// Delete 'x' to remove the local const property.
|
|
"delete x;" +
|
|
// Initialization turns into assignment to global 'x'.
|
|
"const x = 5; assertEquals(5, x);" +
|
|
// No constness of the global 'x'.
|
|
"x = 6; assertEquals(6, x);";
|
|
eval(source);
|
|
}
|
|
|
|
testAssignExistingGlobal();
|
|
assertEquals(6, x);
|
|
|
|
function testAssignmentArgument(x) {
|
|
function local() {
|
|
var source = "delete x; const x = 7; assertEquals(7, x)";
|
|
eval(source);
|
|
}
|
|
local();
|
|
assertEquals(7, x);
|
|
}
|
|
|
|
for (var i = 0; i < 5; i++) {
|
|
testAssignmentArgument();
|
|
}
|
|
%OptimizeFunctionOnNextCall(testAssignmentArgument);
|
|
testAssignmentArgument();
|
|
assertEquals(6, x);
|
|
|
|
__defineSetter__('x', function() { throw 42; });
|
|
function testAssignGlobalThrows() {
|
|
// Initialization turns into assignment to global 'x' which
|
|
// throws an exception.
|
|
var source = "delete x; const x = 8";
|
|
eval(source);
|
|
}
|
|
|
|
assertThrows("testAssignGlobalThrows()");
|
|
|
|
function testInitFastCaseExtension() {
|
|
var source = "const x = 9; assertEquals(9, x); x = 10; assertEquals(9, x)";
|
|
eval(source);
|
|
}
|
|
|
|
testInitFastCaseExtension();
|
|
|
|
function testInitSlowCaseExtension() {
|
|
var source = "";
|
|
// Introduce 100 properties on the context extension object to force
|
|
// it in slow case.
|
|
for (var i = 0; i < 100; i++) source += ("var a" + i + " = " + i + ";");
|
|
source += "const x = 10; assertEquals(10, x); x = 11; assertEquals(10, x)";
|
|
eval(source);
|
|
}
|
|
|
|
testInitSlowCaseExtension();
|
|
|
|
function testAssignSurroundingContextSlot() {
|
|
var x = 12;
|
|
function local() {
|
|
var source = "delete x; const x = 13; assertEquals(13, x)";
|
|
eval(source);
|
|
}
|
|
local();
|
|
assertEquals(13, x);
|
|
}
|
|
|
|
testAssignSurroundingContextSlot();
|