49 lines
1.0 KiB
HTML
49 lines
1.0 KiB
HTML
<p>This page tests function calls whose argument expressions overwrite the callee.</p>
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<p>If the test passes, you'll see PASS messages below.
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</p>
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<pre id="console"></pre>
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<script>
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function log(s)
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{
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document.getElementById("console").appendChild(document.createTextNode(s + "\n"));
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}
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function shouldBe(aDescription, a, b)
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{
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if (a === b) {
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log("PASS: " + aDescription + " should be " + b + " and is.");
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} else {
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log("FAIL: " + aDescription + " should be " + b + " but instead is " + a + ".");
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}
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}
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function test1(callback, x) {
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try {
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return callback.apply(this, [ callback = x ]);
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} catch(e) {
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return e;
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}
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};
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function test2(callback, x) {
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try {
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return callback(callback = x);
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} catch(e) {
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return e;
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}
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};
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(function () {
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if (window.testRunner)
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testRunner.dumpAsText();
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var callback = function callback(x) {
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return x;
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};
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shouldBe("test1(callback, 1)", test1(callback, 1), 1);
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shouldBe("test2(callback, 1)", test2(callback, 1), 1);
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})();
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</script>
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