blob: bba620f560036f52abdfe0753e3d8b5ffb289299 [file] [log] [blame]
Test exception handling with various arithmetic and logic operators, it checks the following things:<br/>
<ul>
<li>In assignment expressions the lefthand side is not modified if the right hand side throws</li>
<li>If the left hand side of a binary operator throws then the right hand should not be executed</li>
<li>If valueOf/toString throws in the left hand expression of a binop it does not prevent evaluation of the right hand expression, but does prevent evaluation of toString/valueOf on the rhs.</li>
</ul>
<div id="log"></div>
<script>
if (this.testRunner)
testRunner.dumpAsText();
if (this.document) {
log = function(msg) {document.getElementById("log").innerHTML += msg + "<br />";};
fail = function(msg) {log("<span style='color: red'>FAIL: </span>" + msg) };
pass = function(msg) { passCount++; log("<span style='color: green'>PASS: </span>" + msg) };
} else {
log = print;
fail = function(msg) {log("FAIL: " + msg) };
pass = function(msg) { passCount++; log("PASS: " + msg); };
}
var unaryOps = ['~', '+', '-', '++', '--'];
var binaryOps = ['-', '+', '*', '/', '%', '|', '&', '^', '<', '<=', '>=', '>', '==', '!=', '<<', '>>'];
var valueOfThrower = { valueOf: function() { throw "throw from valueOf"; } }
var toStringThrower = { toString: function() { throw "throw from toString"; } }
var testCount = 0;
var passCount = 0;
function id(){}
function createTest(expr) {
// For reasons i don't quite understand these tests aren't expected to throw
if (expr == "valueOfThrower == rhsNonZeroNum") return id;
if (expr == "toStringThrower == rhsNonZeroNum") return id;
if (expr == "valueOfThrower != rhsNonZeroNum") return id;
if (expr == "toStringThrower != rhsNonZeroNum") return id;
if (expr == "valueOfThrower == rhsToStringThrower") return id;
if (expr == "toStringThrower == rhsToStringThrower") return id;
if (expr == "valueOfThrower != rhsToStringThrower") return id;
if (expr == "toStringThrower != rhsToStringThrower") return id;
// This creates a test case that ensures that a binary operand will execute the left hand expression first,
// and will not execute the right hand side if the left hand side throws.
var functionPrefix = "(function(){ executedRHS = false; var result = 'PASS'; try { result = ";
var functionPostfix = "; fail('Did not throw exception with \"' + expr + '\"') } catch (e) { " +
" if (result != 'PASS' && executedRHS) { fail('\"'+expr+'\" threw exception, but modified assignment target and executed RHS'); " +
" } else if (result != 'PASS') { fail('\"'+expr+'\" threw exception, but modified assignment target'); " +
" } else if (executedRHS) { fail('\"'+expr+'\" threw exception, but executed right hand half of expression')" +
" } else { pass('Handled \"'+ expr +'\" correctly.') } } })";
testCount++;
try {
return eval(functionPrefix + expr + functionPostfix);
} catch(e) {
throw new String(expr);
}
}
function createTestWithRHSExec(expr) {
// This tests that we evaluate the right hand side of a binary expression before we
// do any type conversion with toString and/or valueOf which may throw.
var functionPrefix = "(function(){ executedRHS = false; var result = 'PASS'; try { result = ";
var functionPostfix = "; fail('Did not throw exception with \"' + expr + '\"') } catch (e) { " +
" if (result != 'PASS') { fail('\"'+expr+'\" threw exception, but modified assignment target'); " +
" } else if (!executedRHS) { fail('\"'+expr+'\" threw exception, and failed to execute RHS when expected')" +
" } else { pass('Handled \"'+ expr +'\" correctly.') } } })";
testCount++;
try {
return eval(functionPrefix + expr + functionPostfix);
} catch(e) {
throw new String(expr);
}
}
window.__defineGetter__('throwingProperty', function(){ throw "throwing resolve"; });
var throwingPropStr = 'throwingProperty';
var valueOfThrowerStr = 'valueOfThrower';
var toStringThrowerStr = 'toStringThrower';
var throwingObjGetter = '({get throwingProperty(){ throw "throwing property" }}).throwingProperty';
createTest(throwingPropStr)();
createTest(throwingObjGetter)();
createTest("!undefinedProperty")();
var local = new String("PASS");
var localTest;
globalValueOfThrower = valueOfThrower;
localTest = local;
try {
testCount++;
localTest = ~valueOfThrower;
fail("Failed to throw an exception for local = ~valueOfThrower");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = ~valueOfThrower worked as expected;");
}
localTest = local;
try {
testCount++;
localTest = +valueOfThrower;
fail("Failed to throw an exception for local = +valueOfThrower");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = +valueOfThrower worked as expected;");
}
localTest = local;
try {
testCount++;
localTest = -valueOfThrower;
fail("Failed to throw an exception for local = -valueOfThrower");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = -valueOfThrower worked as expected;");
}
localTest = local;
try {
testCount++;
localTest = ++valueOfThrower;
fail("Failed to throw an exception for local = ++valueOfThrower");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = ++valueOfThrower worked as expected;");
}
localTest = local;
try {
testCount++;
localTest = --valueOfThrower;
fail("Failed to throw an exception for local = --valueOfThrower");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = --valueOfThrower worked as expected;");
}
localTest = local;
try {
testCount++;
localTest = ~globalValueOfThrower;
fail("Failed to throw an exception for local = ~globalValueOfThrower");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = ~globalValueOfThrower worked as expected;");
}
localTest = local;
try {
testCount++;
localTest = +globalValueOfThrower;
fail("Failed to throw an exception for local = +globalValueOfThrower");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = +globalValueOfThrower worked as expected;");
}
localTest = local;
try {
testCount++;
localTest = -globalValueOfThrower;
fail("Failed to throw an exception for local = -globalValueOfThrower");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = -globalValueOfThrower worked as expected;");
}
localTest = local;
try {
testCount++;
localTest = ++globalValueOfThrower;
fail("Failed to throw an exception for local = ++globalValueOfThrower");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = ++globalValueOfThrower worked as expected;");
}
localTest = local;
try {
testCount++;
localTest = --globalValueOfThrower;
fail("Failed to throw an exception for local = --globalValueOfThrower");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = --globalValueOfThrower worked as expected;");
}
// Dot node tests
localTest = local;
try {
testCount++;
localTest = ~this.globalValueOfThrower;
fail("Failed to throw an exception for local = ~this.globalValueOfThrower");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = ~this.globalValueOfThrower worked as expected;");
}
localTest = local;
try {
testCount++;
localTest = +this.globalValueOfThrower;
fail("Failed to throw an exception for local = +this.globalValueOfThrower");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = +this.globalValueOfThrower worked as expected;");
}
localTest = local;
try {
testCount++;
localTest = -this.globalValueOfThrower;
fail("Failed to throw an exception for local = -this.globalValueOfThrower");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = -this.globalValueOfThrower worked as expected;");
}
localTest = local;
try {
testCount++;
localTest = ++this.globalValueOfThrower;
fail("Failed to throw an exception for local = ++this.globalValueOfThrower");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = ++this.globalValueOfThrower worked as expected;");
}
localTest = local;
try {
testCount++;
localTest = --this.globalValueOfThrower;
fail("Failed to throw an exception for local = --this.globalValueOfThrower");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = --this.globalValueOfThrower worked as expected;");
}
// Bracket node tests
localTest = local;
try {
testCount++;
localTest = ~this['globalValueOfThrower'];
fail("Failed to throw an exception for local = ~this['globalValueOfThrower']");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = ~this['globalValueOfThrower'] worked as expected;");
}
localTest = local;
try {
testCount++;
localTest = +this['globalValueOfThrower'];
fail("Failed to throw an exception for local = +this['globalValueOfThrower']");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = +this['globalValueOfThrower'] worked as expected;");
}
localTest = local;
try {
testCount++;
localTest = -this['globalValueOfThrower'];
fail("Failed to throw an exception for local = -this['globalValueOfThrower']");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = -this['globalValueOfThrower'] worked as expected;");
}
localTest = local;
try {
testCount++;
localTest = ++this['globalValueOfThrower'];
fail("Failed to throw an exception for local = ++this['globalValueOfThrower']");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = ++this['globalValueOfThrower'] worked as expected;");
}
localTest = local;
try {
testCount++;
localTest = --this['globalValueOfThrower'];
fail("Failed to throw an exception for local = --this['globalValueOfThrower']");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = --this['globalValueOfThrower'] worked as expected;");
}
// getter tests
localTest = local;
try {
testCount++;
localTest = ~throwingProperty;
fail("Failed to throw an exception for local = ~throwingProperty");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = ~throwingProperty worked as expected;");
}
localTest = local;
try {
testCount++;
localTest = +throwingProperty;
fail("Failed to throw an exception for local = +throwingProperty");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = +throwingProperty worked as expected;");
}
localTest = local;
try {
testCount++;
localTest = -throwingProperty;
fail("Failed to throw an exception for local = -throwingProperty");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = -throwingProperty worked as expected;");
}
localTest = local;
try {
testCount++;
localTest = ++throwingProperty;
fail("Failed to throw an exception for local = ++throwingProperty");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = ++throwingProperty worked as expected;");
}
localTest = local;
try {
testCount++;
localTest = --throwingProperty;
fail("Failed to throw an exception for local = --throwingProperty");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = --throwingProperty worked as expected;");
}
// Dot node tests
localTest = local;
try {
testCount++;
localTest = ~this.throwingProperty;
fail("Failed to throw an exception for local = ~this.throwingProperty");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = ~this.throwingProperty worked as expected;");
}
localTest = local;
try {
testCount++;
localTest = +this.throwingProperty;
fail("Failed to throw an exception for local = +this.throwingProperty");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = +this.throwingProperty worked as expected;");
}
localTest = local;
try {
testCount++;
localTest = -this.throwingProperty;
fail("Failed to throw an exception for local = -this.throwingProperty");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = -this.throwingProperty worked as expected;");
}
localTest = local;
try {
testCount++;
localTest = ++this.throwingProperty;
fail("Failed to throw an exception for local = ++this.throwingProperty");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = ++this.throwingProperty worked as expected;");
}
localTest = local;
try {
testCount++;
localTest = --this.throwingProperty;
fail("Failed to throw an exception for local = --this.throwingProperty");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = --this.throwingProperty worked as expected;");
}
// Brack node tests
localTest = local;
try {
testCount++;
localTest = ~this['throwingProperty'];
fail("Failed to throw an exception for local = ~this['throwingProperty']");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = ~this['throwingProperty'] worked as expected;");
}
localTest = local;
try {
testCount++;
localTest = +this['throwingProperty'];
fail("Failed to throw an exception for local = +this['throwingProperty']");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = +this['throwingProperty'] worked as expected;");
}
localTest = local;
try {
testCount++;
localTest = -this['throwingProperty'];
fail("Failed to throw an exception for local = -this['throwingProperty']");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = -this['throwingProperty'] worked as expected;");
}
localTest = local;
try {
testCount++;
localTest = ++this['throwingProperty'];
fail("Failed to throw an exception for local = ++this['throwingProperty']");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = ++this['throwingProperty'] worked as expected;");
}
localTest = local;
try {
testCount++;
localTest = --this['throwingProperty'];
fail("Failed to throw an exception for local = --this['throwingProperty']");
} catch (e) {
if (local !== localTest)
fail("assigned to local despite exception being thrown.");
else
pass("local = --this['throwingProperty'] worked as expected;");
}
for (var i = 0; i < unaryOps.length; i++) {
try {
createTest(unaryOps[i] + "undefinedProperty")();
} catch(e) {
fail("Erroneously encountered exception " + e + " with op " + unaryOps[i]);
}
try {
createTest(unaryOps[i] + "undefinedProperty.imaginaryProperty")();
} catch(e) {
fail("Erroneously encountered exception " + e + " with op " + unaryOps[i]);
}
try {
createTest(unaryOps[i] + "undefinedProperty['imaginaryProperty']")();
} catch(e) {
fail("Erroneously encountered exception " + e + " with op " + unaryOps[i]);
}
try {
createTest(unaryOps[i] + valueOfThrowerStr)();
} catch(e) {
fail("Erroneously encountered exception " + e + " with op " + unaryOps[i]);
}
try {
createTest(unaryOps[i] + toStringThrowerStr)();
} catch(e) {
fail("Erroneously encountered exception " + e + " with op " + unaryOps[i]);
}
try {
createTest(unaryOps[i] + throwingPropStr)();
} catch(e) {
fail("Erroneously encountered exception " + e + " with op " + unaryOps[i]);
}
try {
createTest(unaryOps[i] + throwingObjGetter)();
} catch(e) {
fail("Erroneously encountered exception " + e + " with op " + unaryOps[i]);
}
try {
createTest(unaryOps[i] + "this." + valueOfThrowerStr)();
} catch(e) {
fail("Erroneously encountered exception " + e + " with op " + unaryOps[i]);
}
try {
createTest(unaryOps[i] + "this." + toStringThrowerStr)();
} catch(e) {
fail("Erroneously encountered exception " + e + " with op " + unaryOps[i]);
}
try {
createTest(unaryOps[i] + "this." + throwingPropStr)();
} catch(e) {
fail("Erroneously encountered exception " + e + " with op " + unaryOps[i]);
}
try {
createTest(unaryOps[i] + "this[valueOfThrowerStr]")();
} catch(e) {
fail("Erroneously encountered exception " + e + " with op " + unaryOps[i]);
}
try {
createTest(unaryOps[i] + "this[toStringThrowerStr]")();
} catch(e) {
fail("Erroneously encountered exception " + e + " with op " + unaryOps[i]);
}
try {
createTest(unaryOps[i] + "this[throwingPropStr]")();
} catch(e) {
fail("Erroneously encountered exception " + e + " with op " + unaryOps[i]);
}
try {
createTest(unaryOps[i] + throwingPropStr + ".imaginaryProperty")();
} catch(e) {
fail("Erroneously encountered exception " + e + " with op " + unaryOps[i]);
}
try {
createTest(unaryOps[i] + throwingObjGetter + ".imaginaryProperty")();
} catch(e) {
fail("Erroneously encountered exception " + e + " with op " + unaryOps[i]);
}
try {
createTest(unaryOps[i] + throwingPropStr + "['imaginaryProperty']")();
} catch(e) {
fail("Erroneously encountered exception " + e + " with op " + unaryOps[i]);
}
try {
createTest(unaryOps[i] + throwingObjGetter + "['imaginaryProperty']")();
} catch(e) {
fail("Erroneously encountered exception " + e + " with op " + unaryOps[i]);
}
}
var postfixOps = ['++', '--'];
for (var i = 0; i < postfixOps.length; i++) {
try {
createTest("undefinedProperty" + postfixOps[i])();
} catch(e) {
fail("Erroneously encountered exception " + e + " with op " + postfixOps[i]);
}
try {
createTest("undefinedProperty.imaginaryProperty" + postfixOps[i])();
} catch(e) {
fail("Erroneously encountered exception " + e + " with op " + postfixOps[i]);
}
try {
createTest(valueOfThrowerStr + postfixOps[i])();
} catch(e) {
fail("Erroneously encountered exception " + e + " with op " + postfixOps[i]);
}
try {
createTest(toStringThrowerStr + postfixOps[i])();
} catch(e) {
fail("Erroneously encountered exception " + e + " with op " + postfixOps[i]);
}
try {
createTest(throwingPropStr + postfixOps[i])();
} catch(e) {
fail("Erroneously encountered exception " + e + " with op " + postfixOps[i]);
}
try {
createTest("this." + valueOfThrowerStr + postfixOps[i])();
} catch(e) {
fail("Erroneously encountered exception " + e + " with op " + postfixOps[i]);
}
try {
createTest("this." + toStringThrowerStr + postfixOps[i])();
} catch(e) {
fail("Erroneously encountered exception " + e + " with op " + postfixOps[i]);
}
try {
createTest("this." + throwingPropStr + postfixOps[i])();
} catch(e) {
fail("Erroneously encountered exception " + e + " with op " + postfixOps[i]);
}
try {
createTest("this[valueOfThrowerStr]" + postfixOps[i])();
} catch(e) {
fail("Erroneously encountered exception " + e + " with op " + postfixOps[i]);
}
try {
createTest("this[toStringThrowerStr]" + postfixOps[i])();
} catch(e) {
fail("Erroneously encountered exception " + e + " with op " + postfixOps[i]);
}
try {
createTest("this[throwingPropStr]" + postfixOps[i])();
} catch(e) {
fail("Erroneously encountered exception " + e + " with op " + postfixOps[i]);
}
}
rhsNonZeroNum = { valueOf: function(){ executedRHS = true; return 1; } };
rhsZeroNum = { valueOf: function(){ executedRHS = true; return 0; } };
rhsToStringThrower = { toString: function(){ executedRHS = true; return 'string'; }};
getterThrower = { get value() { throw "throwing in getter"; }};
var getterThrowerStr = "getterThrower.value";
rhsGetterTester = { get value() { executedRHS = true; return 'string'; }};
var rhsGetterTesterStr = "rhsGetterTester.value";
var executionOrder = "";
window.__defineGetter__("nonThrowingIndexBase", function(){
executionOrder += "nonThrowingIndexBase, ";
return {
get nonThrowingTestIndex(){ executionOrder += "get nonThrowingTestIndex, "; return undefined; },
get throwingTestIndex(){ executionOrder += "get nonThrowingTestIndex, "; throw {}; return undefined; },
set nonThrowingTestIndex(){ executionOrder += "set nonThrowingTestIndex, "; return undefined; },
set throwingTestIndex(){ executionOrder += "set nonThrowingTestIndex, "; throw {}; return undefined; }
}
});
window.__defineGetter__("throwingIndexBase", function(){
executionOrder += "throwingIndexBase, ";
throw {};
});
window.__defineGetter__("nonThrowingIndexNoThrowProperty", function(){
return {
toString: function() {executionOrder += "nonThrowingIndexNoThrowProperty, "; return "nonThrowingTestIndex"; }
}
});
window.__defineGetter__("nonThrowingIndexThrowProperty", function(){
return {
toString: function() {executionOrder += "nonThrowingIndexThrowProperty, "; return "throwingTestIndex"; }
}
});
window.__defineGetter__("throwingIndex", function(){
return {
toString: function() {executionOrder += "throwingIndex, "; throw {};}
}
});
window.__defineGetter__("valueForAssignment", function(){ executionOrder += "valueForAssignment, "; return 1; })
function createTestWithExecOrderTest(expr, expected) {
// This tests that we evaluate the right hand side of a binary expression before we
// do any type conversion with toString and/or valueOf which may throw.
var functionPrefix = "(function(){ executionOrder = ''; var result = 'PASS'; try { result = ";
var functionPostfix = "; } catch (e) { executionOrder += '***throw***'; } if (executionOrder == expected) pass(expr); else " +
"fail(expr + ' executed as: <br/>' + executionOrder + ' expected: <br/>'+executionOrder); })";
testCount++;
try {
return eval(functionPrefix + expr + functionPostfix);
} catch(e) {
throw new String(expr);
}
}
createTestWithExecOrderTest("nonThrowingIndexBase[nonThrowingIndexNoThrowProperty]", "nonThrowingIndexBase, nonThrowingIndexNoThrowProperty, get nonThrowingTestIndex, ")();
createTestWithExecOrderTest("nonThrowingIndexBase[nonThrowingIndexThrowProperty]", "nonThrowingIndexBase, nonThrowingIndexThrowProperty, get nonThrowingTestIndex, ***throw***")();
createTestWithExecOrderTest("nonThrowingIndexBase[throwingIndex]", "nonThrowingIndexBase, throwingIndex, ***throw***")();
createTestWithExecOrderTest("throwingIndexBase[nonThrowingIndexNoThrowProperty]", "throwingIndexBase, ***throw***")();
createTestWithExecOrderTest("throwingIndexBase[nonThrowingIndexThrowProperty]", "throwingIndexBase, ***throw***")();
createTestWithExecOrderTest("throwingIndexBase[throwingIndex]", "throwingIndexBase, ***throw***")();
createTestWithExecOrderTest("nonThrowingIndexBase[nonThrowingIndexNoThrowProperty] = valueForAssignment", "nonThrowingIndexBase, valueForAssignment, nonThrowingIndexNoThrowProperty, set nonThrowingTestIndex, ")();
createTestWithExecOrderTest("nonThrowingIndexBase[nonThrowingIndexThrowProperty] = valueForAssignment", "nonThrowingIndexBase, valueForAssignment, nonThrowingIndexThrowProperty, set nonThrowingTestIndex, ***throw***")();
createTestWithExecOrderTest("nonThrowingIndexBase[throwingIndex] = valueForAssignment", "nonThrowingIndexBase, valueForAssignment, throwingIndex, ***throw***")();
createTestWithExecOrderTest("throwingIndexBase[nonThrowingIndexNoThrowProperty] = valueForAssignment", "throwingIndexBase, ***throw***")();
createTestWithExecOrderTest("throwingIndexBase[nonThrowingIndexThrowProperty] = valueForAssignment", "throwingIndexBase, ***throw***")();
createTestWithExecOrderTest("throwingIndexBase[throwingIndex] = valueForAssignment", "throwingIndexBase, ***throw***")();
testCount++;
(function() {
executionOrder = "";
var result = true;
try {
result = Number.prototype.toString.call(false);
} catch (e) {
if (result == true)
pass("Number.prototype.toString.call(false)");
else
fail("Number.prototype.toString.call(false) writes to return destination before throwing an exception");
}
})();
log("Passed " + passCount + " of " + testCount + " tests.");
</script>