зеркало из https://github.com/mozilla/gecko-dev.git
42 строки
1.1 KiB
HTML
42 строки
1.1 KiB
HTML
<!DOCTYPE html>
|
|
<html>
|
|
<head>
|
|
<script type="text/javascript">
|
|
function stringify(a) {
|
|
if (a)
|
|
return a.toSource();
|
|
return ''+a;
|
|
}
|
|
var args = [undefined, null, [], {}, 0, "0"];
|
|
var stringArgs = args.map(stringify);
|
|
|
|
function test_method(context, method, arity) {
|
|
function testParams(existingParams, depth) {
|
|
for (var arg of stringArgs) {
|
|
var code = "context[method](" + existingParams + arg + ")";
|
|
try {
|
|
eval(code);
|
|
} catch (ex) {
|
|
// Exceptions are expected
|
|
}
|
|
|
|
if (depth < arity)
|
|
testParams(existingParams + arg + ",", depth + 1);
|
|
}
|
|
}
|
|
testParams("", 1);
|
|
}
|
|
|
|
function startTest() {
|
|
var canvas = document.getElementById("img");
|
|
var context = canvas.getContext('2d');;
|
|
test_method(context, "getImageData", 4);
|
|
test_method(context, "putImageData", 3);
|
|
}
|
|
</script>
|
|
</head>
|
|
<body onload="startTest()">
|
|
<canvas id="img">No canvas support.</canvas>
|
|
</body>
|
|
</html>
|