DefinitelyTyped/when/when-tests.ts

398 lines
12 KiB
TypeScript

/// <reference path="../node/node.d.ts" />
/// <reference path="when.d.ts" />
import fs = require('fs');
import dns = require('dns');
import when = require("when");
class ForeignPromise<T> {
constructor(private value: T) {
}
then<U>(onFulfilled: (value: T) => U, onRejected?: (reason: any) => U) { return new ForeignPromise<U>(onFulfilled(this.value)); }
};
var promise: when.Promise<number>;
var foreign = new ForeignPromise<number>(1);
var error = new Error("boom!");
var example: () => void;
/* * * * * * *
* Core *
* * * * * * */
/* when(x) */
promise = when(1);
promise = when(when(1));
promise = when(foreign);
/* when(x, f) */
promise = when(1, val => val + val);
promise = when(when(1), val => val + val);
promise = when(foreign, val => val + val);
/* when.try(f, ...args) */
promise = when.attempt(() => 1);
promise = when.attempt((a: number) => a + a, 1);
promise = when.attempt((a: number) => a + a, when(1));
promise = when.attempt((a: number, b: string) => a, 1, '2');
promise = when.attempt((a: number, b: string) => a, 1, when('2'));
promise = when.attempt((a: number, b: string) => a, when(1), '2');
promise = when.attempt((a: number, b: string) => a, when(1), when('2'));
promise = when.attempt((a: number, b: string, c: boolean) => a, 1, '2', true);
promise = when.attempt((a: number, b: string, c: boolean) => a, 1, when('2'), true);
promise = when.attempt((a: number, b: string, c: boolean) => a, when(1), '2', true);
promise = when.attempt((a: number, b: string, c: boolean) => a, when(1), when('2'), true);
promise = when.attempt((a: number, b: string, c: boolean) => a, 1, '2', when(true));
promise = when.attempt((a: number, b: string, c: boolean) => a, 1, when('2'), when(true));
promise = when.attempt((a: number, b: string, c: boolean) => a, when(1), '2', when(true));
promise = when.attempt((a: number, b: string, c: boolean) => a, when(1), when('2'), when(true));
promise = when.attempt((a: number, b: string, c: boolean, d: number, e: string) => a, when(1), when('2'), when(true), when(4), when('5'));
/* when.lift(f) */
var liftedFunc0 = when.lift(() => 0);
var liftedFunc1 = when.lift((a: number) => a);
var liftedFunc2 = when.lift((a: number, b: string) => a);
var liftedFunc3 = when.lift((a: number, b: string, c: boolean) => a);
var liftedFunc5 = when.lift((a: number, b: string, c: boolean, d: number, e: string) => a);
promise = liftedFunc0();
promise = liftedFunc1(1);
promise = liftedFunc1(when(1));
promise = liftedFunc2(1, '2');
promise = liftedFunc2(when(1), '2');
promise = liftedFunc2(1, when('2'));
promise = liftedFunc2(when(1), when('2'));
promise = liftedFunc3(1, '2', true);
promise = liftedFunc3(when(1), '2', true);
promise = liftedFunc3(1, when('2'), true);
promise = liftedFunc3(when(1), when('2'), true);
promise = liftedFunc3(1, '2', when(true));
promise = liftedFunc3(when(1), '2', when(true));
promise = liftedFunc3(1, when('2'), when(true));
promise = liftedFunc3(when(1), when('2'), when(true));
promise = liftedFunc5(when(1), when('2'), when(true), when(4), when('5'));
/* when.join(...promises) */
var joinedPromise: when.Promise<number[]> = when.join(when(1), when(2), when(3));
/* when.all(arr) */
when.all<number[]>([when(1), when(2), when(3)]).then(results => {
return results.reduce((r, x) => r + x, 0);
});
/* when.settle(arr) */
when.settle<number>([when(1), when(2), when.reject(new Error("Foo"))]).then(descriptors => {
return descriptors.filter(d => d.state === 'rejected').reduce((r, d) => r + d.value, 0);
});
/* when.promise(resolver) */
promise = when.promise<number>(resolve => resolve(5));
promise = when.promise<number>((resolve, reject) => reject(error));
/* when.resolve(x) */
promise = when.resolve(1);
promise = when.resolve(promise);
promise = when.resolve(foreign);
/* when.reject(error) */
promise = when.reject<number>(error);
/* when.defer() */
var deferred = when.defer<number>();
promise = deferred.promise;
deferred.resolve(1);
deferred.reject(error);
/* * * * * * * *
* Promise *
* * * * * * * */
/* promise.done(handleResult, handleError) */
when(1).done((val: number) => console.log(val));
when(1).done((val: number) => console.log(val), (err: any) => console.log(err));
/* promise.then(onFulfilled) */
promise = when(1).then((val: number) => val + val);
promise = when(1).then((val: number) => when(val + val));
promise = when(1).then((val: number) => val + val, (err: any) => 2);
promise = when(1).then((val: number) => when(val + val), (err: any) => 2);
/* promise.spread(onFulfilledArray) */
promise = when([]).spread(() => 2);
promise = when([1]).spread((a: number) => a);
promise = when([1, '2']).spread((a: number, b: string) => a);
promise = when([1, '2', true]).spread((a: number, b: string, c: boolean) => a);
promise = when([1, '2', true]).spread((a: number, b: string, c: boolean) => when(a));
/* promise.fold(combine, promise2) */
promise = when(1).fold((a: number, b: string) => a, '2');
promise = when(1).fold((a: number, b: string) => a, when('2'));
promise = when(1).fold((a: number, b: string) => when(a), '2');
promise = when(1).fold((a: number, b: string) => when(a), when('2'));
/* promise.catch(onRejected) */
promise = when(1).catch((err: any) => 2);
promise = when(1).catch((err: any) => when(2));
promise = when(1).catch((err: any) => err.good, (err: any) => 2);
promise = when(1).catch((err: any) => err.good, (err: any) => when(2));
promise = when(1).catch(Error, (err: any) => 2);
promise = when(1).catch(Error, (err: any) => when(2));
//TODO: error constructor predicate
promise = when(1).otherwise((err: any) => 2);
promise = when(1).otherwise((err: any) => when(2));
promise = when(1).otherwise((err: any) => err.good, (err: any) => 2);
promise = when(1).otherwise((err: any) => err.good, (err: any) => when(2));
/* promise.finally(cleanup) */
promise = when(1).finally(() => console.log('Cleaning up'));
promise = when(1).ensure(() => console.log('Cleaning up'));
/* promise.yield(x) */
promise = when(true).yield(1);
promise = when(true).yield(when(2));
/* promise.else(x) */
promise = when(1).else(2);
promise = when(1).else(2);
promise = when(1).orElse(2);
promise = when(1).orElse(2);
/* promise.tap(onFulfilledSideEffect) */
promise = when(1).tap(val => console.log(val));
/* promise.delay(milliseconds) */
promise = when(1).delay(1000);
/* promise.timeout(milliseconds, reason) */
promise = when(1).timeout(1000);
promise = when(1).timeout(1000, new Error('Too SLOW!'));
/* promise.inspect() */
var status: {
state: string;
value?: number;
reason?: any;
};
status = when(1).inspect()
/* promise.with(thisArg) */
promise = when(1).with(2);
promise = when(1).withThis(2);
/* * * * * * * * *
* when/node *
* * * * * * * * */
import nodefn = require('when/node');
/* node.lift */
var nodeFn0 = (callback: (err: any, result: number) => void) => callback(null, 0);
var nodeFn1 = (a: number, callback: (err: any, result: number) => void) => callback(null, a);
var nodeFn2 = (a: number, b: string, callback: (err: any, result: number) => void) => callback(null, a);
var nodeFn3 = (a: number, b: string, c: boolean, callback: (err: any, result: number) => void) => callback(null, a);
var nodeFn5 = (a: number, b: string, c: boolean, d: number, e: string, callback: (err: any, result: number) => void) => callback(null, a);
var liftedNodeFunc0 = nodefn.lift(nodeFn0);
var liftedNodeFunc1 = nodefn.lift(nodeFn1);
var liftedNodeFunc2 = nodefn.lift(nodeFn2);
var liftedNodeFunc3 = nodefn.lift(nodeFn3);
var liftedNodeFunc5 = nodefn.lift(nodeFn5);
promise = liftedNodeFunc0();
promise = liftedNodeFunc1(1);
promise = liftedNodeFunc1(when(1));
promise = liftedNodeFunc2(1, '2');
promise = liftedNodeFunc2(when(1), '2');
promise = liftedNodeFunc2(1, when('2'));
promise = liftedNodeFunc2(when(1), when('2'));
promise = liftedNodeFunc3(1, '2', true);
promise = liftedNodeFunc3(when(1), '2', true);
promise = liftedNodeFunc3(1, when('2'), true);
promise = liftedNodeFunc3(when(1), when('2'), true);
promise = liftedNodeFunc3(1, '2', when(true));
promise = liftedNodeFunc3(when(1), '2', when(true));
promise = liftedNodeFunc3(1, when('2'), when(true));
promise = liftedNodeFunc3(when(1), when('2'), when(true));
promise = liftedNodeFunc5(when(1), when('2'), when(true), when(4), when('5'));
example = function() {
var resolveAddress = nodefn.lift(dns.resolve);
when.join(
resolveAddress(when('twitter.com')),
resolveAddress(when('facebook.com')),
resolveAddress(when('google.com'))
).then((addresses) => {
// All addresses resolved
}).catch((reason) => {
// At least one of the lookups failed
});
}
/* node.liftAll */
// Cannot be represented?
example = function() {
// Lift the entire dns API
var promisedDns = nodefn.liftAll(dns);
when.join(
promisedDns.resolve("twitter.com"),
promisedDns.resolveNs("facebook.com"),
promisedDns.resolveMx("google.com")
).then((addresses) => {
// All addresses resolved
}).catch((reason) => {
// At least one of the lookups failed
});
}
example = function() {
// Lift all of the fs methods, but name them with an 'Async' suffix
var promisedFs = nodefn.liftAll(fs, (promisedFs: any, liftedFunc: Function, name: string) => {
promisedFs[name + 'Async'] = liftedFunc;
return promisedFs;
});
promisedFs.readFileAsync('file.txt').done(console.log.bind(console));
}
example = function() {
// Lift all of the fs methods, but name them with an 'Async' suffix
// and add them back onto fs!
var promisedFs = nodefn.liftAll(fs, (promisedFs: any, liftedFunc: Function, name: string) => {
promisedFs[name + 'Async'] = liftedFunc;
return promisedFs;
}, fs);
if (promisedFs === fs) {
promisedFs.readFileAsync('file.txt').done(console.log.bind(console));
}
}
/* node.call */
promise = nodefn.call(nodeFn0);
promise = nodefn.call(nodeFn1, 1);
promise = nodefn.call(nodeFn1, when(1));
promise = nodefn.call(nodeFn2, 1, '2');
promise = nodefn.call(nodeFn2, 1, when('2'));
promise = nodefn.call(nodeFn2, when(1), '2');
promise = nodefn.call(nodeFn2, when(1), when('2'));
promise = nodefn.call(nodeFn3, 1, '2', true);
promise = nodefn.call(nodeFn3, 1, when('2'), true);
promise = nodefn.call(nodeFn3, when(1), '2', true);
promise = nodefn.call(nodeFn3, when(1), when('2'), true);
promise = nodefn.call(nodeFn3, 1, '2', when(true));
promise = nodefn.call(nodeFn3, 1, when('2'), when(true));
promise = nodefn.call(nodeFn3, when(1), '2', when(true));
promise = nodefn.call(nodeFn3, when(1), when('2'), when(true));
promise = nodefn.call(nodeFn5, when(1), when('2'), when(true), when(4), when('5'));
example = function () {
var loadPasswd = nodefn.call(fs.readFile, '/etc/passwd');
loadPasswd.done(
(passwd: Buffer) => console.log('Contents of /etc/passwd:\n' + passwd),
(error: any) => console.log('Something wrong happened: ' + error));
};
/* node.apply */
promise = nodefn.apply(nodeFn2, [1, '2']);
example = function () {
var loadPasswd = nodefn.apply(fs.readFile, ['/etc/passwd']);
loadPasswd.done(
(passwd: Buffer) => console.log('Contents of /etc/passwd:\n' + passwd),
(error: any) => console.log('Something wrong happened: ' + error));
};
/* node.liftCallback */
example = function () {
var fetchData: (key: string) => when.Promise<number>;
var handleData: (err: any, result: number) => void;
var handlePromisedData: (result: when.Promise<number>) => when.Promise<number>;
handlePromisedData = nodefn.liftCallback(handleData);
handlePromisedData(fetchData('thing'));
};
/* node.bindCallback */
example = function () {
var fetchData: (key: string) => when.Promise<number>;
var handleData: (err: any, result: number) => void;
nodefn.bindCallback(fetchData('thing'), handleData);
};
/* node.createCallback */
example = function () {
when.promise((resolve, reject) =>
nodeFn2(1, '2', nodefn.createCallback({ resolve: resolve, reject: reject })))
.then(
(value: number) => console.log(value),
(err: any) => console.error(err));
};