test AsyncGeneratorFunction's basic properties

Author: thefourtheye

test/built-ins/AsyncGeneratorFunction/exposed-via-constructor-property.js

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+/*---
+ * author: Sakthipriyan Vairamani (thefourtheye) <thechargingvolcano@gmail.com>
+ * description: Make sure %AsyncGeneratorFunction% is exposed via the
+ *              `.constructor` property.
+---*/
+
+const AsyncGeneratorFunction = async function* () {}.constructor;
+assert.sameValue(typeof AsyncGeneratorFunction, 'function');

test/built-ins/AsyncGeneratorFunction/internal-prototype-property.js

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+/*---
+ * author: Sakthipriyan Vairamani (thefourtheye) <thechargingvolcano@gmail.com>
+ * description: Check if %AsyncGeneratorFunction% function derives from
+ *              `Function` object.
+---*/
+
+async function* foo() {};
+const AsyncGeneratorFunction = async function* () {}.constructor;
+
+assert.sameValue(Object.getPrototypeOf(AsyncGeneratorFunction), Function);
+assert.sameValue(
+  Object.getPrototypeOf(AsyncGeneratorFunction.prototype),
+  Function.prototype
+);
+assert(foo instanceof Function);

test/built-ins/AsyncGeneratorFunction/is-extensible.js

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+/*---
+ * author: Sakthipriyan Vairamani (thefourtheye) <thechargingvolcano@gmail.com>
+ * description: Check if %AsyncGeneratorFunction% function is extensible, by
+ *              adding and removing properties to it.
+---*/
+
+const AsyncGeneratorFunction = async function* () {}.constructor;
+AsyncGeneratorFunction.testProperty = 'thefourtheye';
+
+assert.sameValue(AsyncGeneratorFunction.testProperty, 'thefourtheye');
+assert(delete AsyncGeneratorFunction.testProperty);

test/built-ins/AsyncGeneratorFunction/is-not-a-global.js

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+/*---
+ * author: Sakthipriyan Vairamani (thefourtheye) <thechargingvolcano@gmail.com>
+ * description: Make sure %AsyncGeneratorFunction% is not a global function
+---*/
+
+assert.throws(ReferenceError, function() {
+  AsyncGeneratorFunction
+}, 'AsyncGeneratorFunction should not be available in global scope');

test/built-ins/AsyncGeneratorFunction/length-property.js

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+/*---
+ * author: Sakthipriyan Vairamani (thefourtheye) <thechargingvolcano@gmail.com>
+ * description: Validate %AsyncGeneratorFunction%'s `length` property and its
+ *              property descriptors
+---*/
+
+const AsyncGeneratorFunction = async function* () {}.constructor;
+assert.sameValue(AsyncGeneratorFunction.length, 1);
+
+verifyNotEnumerable(AsyncGeneratorFunction, 'length');
+verifyNotWritable(AsyncGeneratorFunction, 'length');
+verifyConfigurable(AsyncGeneratorFunction, 'length');

test/built-ins/AsyncGeneratorFunction/name-and-property-descriptors.js

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+/*---
+ * author: Sakthipriyan Vairamani (thefourtheye) <thechargingvolcano@gmail.com>
+ * description: Validate %AsyncGeneratorFunction%'s `name` property and its
+ *              property descriptors
+---*/
+
+const AsyncGeneratorFunction = async function* () {}.constructor;
+assert.sameValue(AsyncGeneratorFunction.name, 'AsyncGeneratorFunction');
+
+verifyNotEnumerable(AsyncGeneratorFunction, 'name');
+verifyNotWritable(AsyncGeneratorFunction, 'name');
+verifyConfigurable(AsyncGeneratorFunction, 'name');

test/built-ins/AsyncGeneratorFunction/prototype-property-constructor-property.js

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+/*---
+ * author: Sakthipriyan Vairamani (thefourtheye) <thechargingvolcano@gmail.com>
+ * description: Check if %AsyncGeneratorFunction% function's `prototype`
+ *              object's `constructor` property is %AsyncGeneratorFunction%
+ *              itself
+---*/
+
+const AsyncGeneratorFunction = async function* () {}.constructor;
+const AGFPrototype = AsyncGeneratorFunction.prototype;
+assert.sameValue(AGFPrototype.constructor, AsyncGeneratorFunction);
+
+verifyNotEnumerable(AGFPrototype, 'constructor');
+verifyNotWritable(AGFPrototype, 'constructor');
+verifyConfigurable(AGFPrototype, 'constructor');

test/built-ins/AsyncGeneratorFunction/prototype-property-is-extensible.js

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+/*---
+ * author: Sakthipriyan Vairamani (thefourtheye) <thechargingvolcano@gmail.com>
+ * description: Check if %AsyncGeneratorFunction% function's `prototype` object
+ *              is extensible, by adding and removing properties to it.
+---*/
+
+const AGFPrototype = async function* () {}.constructor.prototype;
+AGFPrototype.testProperty = 'thefourtheye';
+
+assert.sameValue(AGFPrototype.testProperty, 'thefourtheye');
+assert(delete AGFPrototype.testProperty);

test/built-ins/AsyncGeneratorFunction/prototype-property-toString-symbol.js

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+/*---
+ * author: Sakthipriyan Vairamani (thefourtheye) <thechargingvolcano@gmail.com>
+ * description: Check if %AsyncGeneratorFunction% function's `prototype`
+ *              object's `Symbol.toStringTag` property is
+ *              'AsyncGeneratorFunction'
+---*/
+
+const AsyncGeneratorFunction = async function* () {}.constructor;
+const AGFPrototype = AsyncGeneratorFunction.prototype;
+
+assert.sameValue(AGFPrototype[Symbol.toStringTag], 'AsyncGeneratorFunction');
+
+verifyNotEnumerable(AGFPrototype, Symbol.toStringTag);
+verifyNotWritable(AGFPrototype, Symbol.toStringTag);
+verifyConfigurable(AGFPrototype, Symbol.toStringTag);

test/built-ins/AsyncGeneratorFunction/prototype-property.js

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+/*---
+ * author: Sakthipriyan Vairamani (thefourtheye) <thechargingvolcano@gmail.com>
+ * description: Validate %AsyncGeneratorFunction% function's prototype
+ *              property.
+---*/
+
+const AsyncGeneratorFunction = async function* () {}.constructor;
+
+verifyNotEnumerable(AsyncGeneratorFunction, 'prototype');
+verifyNotWritable(AsyncGeneratorFunction, 'prototype');
+verifyNotConfigurable(AsyncGeneratorFunction, 'prototype');