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// Various evaluation order tests..
// Argument list should be evaluated before checking whether functions is callable, etc.
function test1() {
function bad() {
throw "PASS";
}
try {
var f = 42;
f(bad());
} catch (e) {
return e;
}
}
shouldBe('test1()', '"PASS"');
// Make sure we do toObject properly
shouldThrow("var v = null; delete v.x;");
// Left hand-side of an assignment should be bound as a reference before evaluating RHS, test #1
x = 0;
function test2() {
x = eval("var x; 42;");
}
test2();
shouldBe('x', '42');
// Same, but using with and not eval.
y = 0;
function test3() {
var o = {};
with (o) {
y = (o.y = 42);
}
}
test3();
shouldBe('y', '42');
// Now also throwing in functions in a mix. Also tests 'this' computation
z = "FAIL - wrong scope bound?";
o = {};
function test4() {
var o = {fn: null /* so it goes there*/ };
with (o) {
fn = function() {
this.z = "FAIL - wrong this?";
return "PASS";
}
z = fn();
}
}
test4();
shouldBe('z', '"PASS"');
// Here, we are making sure we call toObject on base of foo[bar] before calling toString on index
var b = undefined; // so toObject fails
index = { toString: function() { throw "FAIL"; } }
caught = false;
theCatch = null;
try {
b[index];
} catch (e) {
caught = true;
theCatch = e;
}
shouldBeTrue('caught');
shouldBeTrue('theCatch != "FAIL"');
// Now make sure that toString on LHS gets called before evaluating RHS.
index = { toString: function() { throw "PASS"; } }
b = {}
function rhs() {
throw "FAIL";
}
caught = false;
theCatch = null;
try {
b[index] = rhs();
} catch (e) {
caught = true;
theCatch = e;
}
shouldBeTrue('caught');
shouldBe('theCatch', "'PASS'");
// Make sure all the steps (other than the toObject, which we can't trace w/o failing) are in order for foo[bar]
out = "";
function getBase() {
out += "1";
return {};
}
function getIndex() {
out += "2";
o = { toString: function() { out += "3"; return "42"; } };
return o;
}
function getRHS() {
out += "4";
return "answer";
}
getBase()[getIndex()] = getRHS();
shouldBe("out", "1234");
// Like assignment, 'var' binds the scope before doing evaluation
// So make sure it gets it right. eval can't inject a new variable here, so use catch/with capture.
function varScopeTest1() {
var capturer = { captureInject: function(val) { this.local = val; return "ret:" + val; } }
with (capturer) {
// This should write to the activation's local.
var local = captureInject(42);
}
if (local != "ret:42")
return "FAIL";
if (capturer.local != 42)
return "FAIL #2";
return "PASS";
}
shouldBe("varScopeTest1()", "'PASS'");
debug("Done.");
// kate: indent-width 4; replace-tabs on; tab-width 4; space-indent on;
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