110 lines
4.6 KiB
JavaScript
110 lines
4.6 KiB
JavaScript
"use strict";
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var assert = require("assert");
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var testFulfilled = require("./helpers/testThreeCases").testFulfilled;
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var testRejected = require("./helpers/testThreeCases").testRejected;
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var reasons = require("./helpers/reasons");
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var adapter = global.adapter;
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var pending = adapter.pending;
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var dummy = { dummy: "dummy" }; // we fulfill or reject with this when we don't intend to test against it
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var sentinel = { sentinel: "sentinel" }; // a sentinel fulfillment value to test for with strict equality
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var other = { other: "other" }; // a value we don't want to be strict equal to
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describe("2.2.7: `then` must return a promise: `promise2 = promise1.then(onFulfilled, onRejected)`", function () {
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specify("is a promise", function () {
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var promise1 = pending().promise;
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var promise2 = promise1.then();
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assert(typeof promise2 === "object" || typeof promise2 === "function");
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assert.notStrictEqual(promise2, null);
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assert.strictEqual(typeof promise2.then, "function");
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});
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describe("2.2.7.1: If either `onFulfilled` or `onRejected` returns a value `x`, run the Promise Resolution " +
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"Procedure `[[Resolve]](promise2, x)`", function () {
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specify("see separate 3.3 tests", function () { });
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});
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describe("2.2.7.2: If either `onFulfilled` or `onRejected` throws an exception `e`, `promise2` must be rejected " +
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"with `e` as the reason.", function () {
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function testReason(expectedReason, stringRepresentation) {
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describe("The reason is " + stringRepresentation, function () {
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testFulfilled(dummy, function (promise1, done) {
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var promise2 = promise1.then(function onFulfilled() {
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throw expectedReason;
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});
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promise2.then(null, function onPromise2Rejected(actualReason) {
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assert.strictEqual(actualReason, expectedReason);
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done();
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});
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});
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testRejected(dummy, function (promise1, done) {
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var promise2 = promise1.then(null, function onRejected() {
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throw expectedReason;
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});
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promise2.then(null, function onPromise2Rejected(actualReason) {
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assert.strictEqual(actualReason, expectedReason);
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done();
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});
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});
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});
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}
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Object.keys(reasons).forEach(function (stringRepresentation) {
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testReason(reasons[stringRepresentation], stringRepresentation);
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});
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});
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describe("2.2.7.3: If `onFulfilled` is not a function and `promise1` is fulfilled, `promise2` must be fulfilled " +
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"with the same value.", function () {
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function testNonFunction(nonFunction, stringRepresentation) {
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describe("`onFulfilled` is " + stringRepresentation, function () {
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testFulfilled(sentinel, function (promise1, done) {
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var promise2 = promise1.then(nonFunction);
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promise2.then(function onPromise2Fulfilled(value) {
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assert.strictEqual(value, sentinel);
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done();
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});
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});
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});
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}
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testNonFunction(undefined, "`undefined`");
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testNonFunction(null, "`null`");
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testNonFunction(false, "`false`");
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testNonFunction(5, "`5`");
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testNonFunction({}, "an object");
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testNonFunction([function () { return other; }], "an array containing a function");
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});
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describe("2.2.7.4: If `onRejected` is not a function and `promise1` is rejected, `promise2` must be rejected " +
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"with the same reason.", function () {
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function testNonFunction(nonFunction, stringRepresentation) {
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describe("`onRejected` is " + stringRepresentation, function () {
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testRejected(sentinel, function (promise1, done) {
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var promise2 = promise1.then(null, nonFunction);
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promise2.then(null, function onPromise2Rejected(reason) {
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assert.strictEqual(reason, sentinel);
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done();
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});
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});
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});
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}
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testNonFunction(undefined, "`undefined`");
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testNonFunction(null, "`null`");
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testNonFunction(false, "`false`");
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testNonFunction(5, "`5`");
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testNonFunction({}, "an object");
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testNonFunction([function () { return other; }], "an array containing a function");
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});
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});
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