redioactive
Version:
Reactive streams for chaining overlapping promises.
104 lines (103 loc) • 4.48 kB
JavaScript
;
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
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Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
const redio_1 = __importStar(require("../redio"));
describe('Testing sequences of pipes', () => {
test('Sequence should flatten pipes', async () => {
await expect((0, redio_1.default)([(0, redio_1.default)([1, 2, 3]), (0, redio_1.default)([4, 5]), (0, redio_1.default)([6])])
.sequence()
.toArray()).resolves.toEqual([1, 2, 3, 4, 5, 6]);
});
test('Flattens a single stream', async () => {
await expect((0, redio_1.default)([(0, redio_1.default)([1, 2, 3])])
.sequence()
.toArray()).resolves.toEqual([1, 2, 3]);
});
test('Flattens a single empty stream', async () => {
await expect((0, redio_1.default)([(0, redio_1.default)([])])
.sequence()
.toArray()).resolves.toEqual([]);
});
test('Handles empty stream at the start', async () => {
await expect((0, redio_1.default)([(0, redio_1.default)([]), (0, redio_1.default)([4, 5]), (0, redio_1.default)([6])])
.sequence()
.toArray()).resolves.toEqual([4, 5, 6]);
});
test('Handles empty stream in the middle', async () => {
await expect((0, redio_1.default)([(0, redio_1.default)([1, 2, 3]), (0, redio_1.default)([]), (0, redio_1.default)([6])])
.sequence()
.toArray()).resolves.toEqual([1, 2, 3, 6]);
});
test('Handles empty stream at the end', async () => {
await expect((0, redio_1.default)([(0, redio_1.default)([1, 2, 3]), (0, redio_1.default)([4, 5]), (0, redio_1.default)([])])
.sequence()
.toArray()).resolves.toEqual([1, 2, 3, 4, 5]);
});
test('Slow consumer', async () => {
const eachFn = jest.fn();
await expect((0, redio_1.default)([(0, redio_1.default)([1, 2, 3]), (0, redio_1.default)([4, 5]), (0, redio_1.default)([6])])
.sequence()
.each((x) => new Promise((resolve) => {
setTimeout(() => {
resolve();
eachFn(x);
}, 50);
}))
.toPromise()).resolves.toEqual(6);
expect(eachFn).toHaveBeenCalledTimes(6);
});
function innerGenny(length, delay) {
let lengthCount = 0;
return () => new Promise((resolve) => {
if (lengthCount++ >= length) {
resolve(redio_1.end);
}
else {
setTimeout(() => {
resolve(lengthCount);
}, delay);
}
});
}
function genny(streams, delay) {
let streamCount = 0;
return () => new Promise((resolve) => {
if (streamCount++ >= streams) {
resolve(redio_1.end);
}
else {
setTimeout(() => {
resolve((0, redio_1.default)(innerGenny(streamCount, 20)));
}, delay);
}
});
}
test.only('Slow producers', async () => {
await expect((0, redio_1.default)(genny(3, 40)).sequence().toArray()).resolves.toEqual([1, 1, 2, 1, 2, 3]);
});
test('Is it a pipe? Is it a plane?', async () => {
await expect((0, redio_1.default)(genny(3, 20)).map(redio_1.isPipe).toArray()).resolves.toEqual([true, true, true]);
});
});