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// Any copyright is dedicated to the Public Domain.
// http://creativecommons.org/licenses/publicdomain/
//-----------------------------------------------------------------------------
var BUGNUMBER = 616294;
var summary =
"|delete x| inside a function in eval code, where that eval code includes " +
"|var x| at top level, actually does delete the binding for x";
print(BUGNUMBER + ": " + summary);
/**************
* BEGIN TEST *
**************/
var f;
function testOuterLet()
{
return eval("let x; (function() { return delete x; })");
}
f = testOuterLet();
assertEq(f(), false); // can't delete lexical declarations => false
function testOuterForLet()
{
return eval("for (let x; false; ); (function() { return delete x; })");
}
f = testOuterForLet();
assertEq(f(), true); // not there => true (only non-configurable => false)
function testOuterForInLet()
{
return eval("for (let x in {}); (function() { return delete x; })");
}
f = testOuterForInLet();
assertEq(f(), true); // configurable, so remove => true
assertEq(f(), true); // not there => true (only non-configurable => false)
function testOuterNestedVarInForLet()
{
return eval("for (let q = 0; q < 5; q++) { var x; } (function() { return delete x; })");
}
f = testOuterNestedVarInForLet();
assertEq(f(), true); // configurable, so remove => true
assertEq(f(), true); // there => true
function testArgumentShadowLet()
{
return eval("let x; (function(x) { return delete x; })");
}
f = testArgumentShadowLet();
assertEq(f(), false); // non-configurable argument => false
function testFunctionLocal()
{
return eval("(function() { let x; return delete x; })");
}
f = testFunctionLocal();
assertEq(f(), false); // defined by function code => not configurable => false
/******************************************************************************/
if (typeof reportCompare === "function")
reportCompare(true, true);
print("All tests passed!");
|
