29 lines
999 B
JavaScript
29 lines
999 B
JavaScript
"use strict";
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add_task(async function test_generateQI() {
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function checkQI(interfaces, iface) {
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let obj = {
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QueryInterface: ChromeUtils.generateQI(interfaces),
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};
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equal(obj.QueryInterface(iface), obj,
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`Correct return value for query to ${iface}`);
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}
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// Test success scenarios.
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checkQI([], Ci.nsISupports);
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checkQI([Ci.nsIPropertyBag, "nsIPropertyBag2"], Ci.nsIPropertyBag);
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checkQI([Ci.nsIPropertyBag, "nsIPropertyBag2"], Ci.nsIPropertyBag2);
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checkQI([Ci.nsIPropertyBag, "nsIPropertyBag2", "nsINotARealInterface"], Ci.nsIPropertyBag2);
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// Non-IID values get stringified, and don't cause any errors as long
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// as there isn't a non-IID property with the same name on Ci.
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checkQI([Ci.nsIPropertyBag, "nsIPropertyBag2", null, Object], Ci.nsIPropertyBag2);
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ChromeUtils.generateQI([])(Ci.nsISupports);
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// Test failure scenarios.
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Assert.throws(() => checkQI([], Ci.nsIPropertyBag),
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e => e.result == Cr.NS_ERROR_NO_INTERFACE);
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});
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