| "use strict"; |
| // https://heycam.github.io/webidl/#es-namespaces |
| // https://console.spec.whatwg.org/#console-namespace |
| |
| test(() => { |
| assert_own_property(console, Symbol.toStringTag); |
| |
| const propDesc = Object.getOwnPropertyDescriptor(console, Symbol.toStringTag); |
| assert_equals(propDesc.value, "console", "value"); |
| assert_equals(propDesc.writable, false, "writable"); |
| assert_equals(propDesc.enumerable, false, "enumerable"); |
| assert_equals(propDesc.configurable, true, "configurable"); |
| }, "@@toStringTag exists on the namespace object with the appropriate descriptor"); |
| |
| test(() => { |
| assert_equals(console.toString(), "[object console]"); |
| assert_equals(Object.prototype.toString.call(console), "[object console]"); |
| }, "Object.prototype.toString applied to the namespace object"); |
| |
| test(t => { |
| assert_own_property(console, Symbol.toStringTag, "Precondition: @@toStringTag on the namespace object"); |
| t.add_cleanup(() => { |
| Object.defineProperty(console, Symbol.toStringTag, { value: "console" }); |
| }); |
| |
| Object.defineProperty(console, Symbol.toStringTag, { value: "Test" }); |
| assert_equals(console.toString(), "[object Test]"); |
| assert_equals(Object.prototype.toString.call(console), "[object Test]"); |
| }, "Object.prototype.toString applied after modifying the namespace object's @@toStringTag"); |
| |
| test(t => { |
| assert_own_property(console, Symbol.toStringTag, "Precondition: @@toStringTag on the namespace object"); |
| t.add_cleanup(() => { |
| Object.defineProperty(console, Symbol.toStringTag, { value: "console" }); |
| }); |
| |
| assert_true(delete console[Symbol.toStringTag]); |
| assert_equals(console.toString(), "[object Object]"); |
| assert_equals(Object.prototype.toString.call(console), "[object Object]"); |
| }, "Object.prototype.toString applied after deleting @@toStringTag"); |