147 lines
2.5 KiB
JavaScript
147 lines
2.5 KiB
JavaScript
description(
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'Tests whether eval() works inside statements that read and modify a value.'
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);
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function multTest()
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{
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var x = 1;
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x *= eval('2');
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return x == 2;
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}
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function divTest()
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{
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var x = 2;
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x /= eval('2');
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return x == 1;
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}
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function addTest()
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{
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var x = 0;
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x += eval('1');
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return x == 1;
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}
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function subTest()
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{
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var x = 0;
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x -= eval('1');
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return x == -1;
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}
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function lshiftTest()
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{
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var x = 1;
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x <<= eval('1');
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return x == 2;
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}
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function rshiftTest()
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{
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var x = 1;
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x >>= eval('1');
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return x == 0;
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}
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function urshiftTest()
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{
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var x = 1;
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x >>>= eval('1');
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return x == 0;
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}
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function andTest()
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{
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var x = 1;
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x &= eval('1');
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return x == 1;
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}
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function xorTest()
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{
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var x = 0;
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x ^= eval('1');
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return x == 1;
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}
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function orTest()
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{
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var x = 0;
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x |= eval('1');
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return x == 1;
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}
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function modTest()
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{
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var x = 4;
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x %= eval('3');
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return x == 1;
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}
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function preIncTest()
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{
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var x = { value: 0 };
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++eval('x').value;
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return x.value == 1;
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}
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function preDecTest()
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{
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var x = { value: 0 };
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--eval('x').value;
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return x.value == -1;
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}
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function postIncTest()
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{
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var x = { value: 0 };
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eval('x').value++;
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return x.value == 1;
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}
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function postDecTest()
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{
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var x = { value: 0 };
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eval('x').value--;
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return x.value == -1;
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}
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function primitiveThisTest()
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{
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// Test that conversion of this is persistant over multiple calls to eval,
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// even where 'this' is not directly used within the function.
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eval('this.value = "Seekrit message";');
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return eval('this.value') === "Seekrit message";
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}
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function strictThisTest()
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{
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// In a strict mode function primitive this values are not converted, so
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// the property access in the first eval is writing a value to a temporary
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// object. This throws, per section 8.7.2.
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"use strict";
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eval('this.value = "Seekrit message";');
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return eval('this.value') === undefined;
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}
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shouldBeTrue('multTest();');
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shouldBeTrue('divTest();');
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shouldBeTrue('addTest();');
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shouldBeTrue('subTest();');
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shouldBeTrue('lshiftTest();');
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shouldBeTrue('rshiftTest();');
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shouldBeTrue('urshiftTest();');
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shouldBeTrue('andTest();');
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shouldBeTrue('xorTest();');
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shouldBeTrue('orTest();');
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shouldBeTrue('modTest();');
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shouldBeTrue('preIncTest();');
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shouldBeTrue('preDecTest();');
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shouldBeTrue('postIncTest();');
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shouldBeTrue('postDecTest();');
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shouldBeTrue('primitiveThisTest.call(1);');
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shouldThrow('strictThisTest.call(1);');
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