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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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29
toolkit/modules/tests/xpcshell/test_ObjectUtils_strict.js Normal file
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"use strict";
var {ObjectUtils} = Components.utils.import("resource://gre/modules/ObjectUtils.jsm", {});
var {PromiseTestUtils} = Components.utils.import("resource://testing-common/PromiseTestUtils.jsm", {});
add_task(function* test_strict() {
let loose = { a: 1 };
let strict = ObjectUtils.strict(loose);
loose.a; // Should not throw.
loose.b || undefined; // Should not throw.
strict.a; // Should not throw.
PromiseTestUtils.expectUncaughtRejection(/No such property: "b"/);
Assert.throws(() => strict.b, /No such property: "b"/);
"b" in strict; // Should not throw.
strict.b = 2;
strict.b; // Should not throw.
PromiseTestUtils.expectUncaughtRejection(/No such property: "c"/);
Assert.throws(() => strict.c, /No such property: "c"/);
"c" in strict; // Should not throw.
loose.c = 3;
strict.c; // Should not throw.
});
function run_test() {
run_next_test();
}