Files
api/packages/api-provider/test/mockWs.ts
T

84 lines
1.7 KiB
TypeScript

// Copyright 2017-2018 @polkadot/api-provider authors & contributors
// This software may be modified and distributed under the terms
// of the ISC license. See the LICENSE file for details.
import { Server } from 'mock-socket';
const TEST_WS_URL = 'ws://localhost:9955';
let server: Server;
type ErrorDef = {
id: number,
error: {
code: number,
message: string
}
};
type ReplyDef = {
id: number,
reply: {
result: any
}
};
function createError ({ id, error: { code, message } }: ErrorDef) {
return {
id,
jsonrpc: '2.0',
error: {
code,
message
}
};
}
function createReply ({ id, reply: { result } }: ReplyDef) {
return {
id,
jsonrpc: '2.0',
result
};
}
function mockWs (requests: Array<{ method: string }>) {
server = new Server(TEST_WS_URL);
let requestCount = 0;
const scope: { body: { [index: string]: {} }, requests: number, server: Server, done: any } = {
body: {},
requests: 0,
server,
done: () =>
server.stop(() => {
// ignore
})
};
server.on('connection', (socket) => {
// @ts-ignore definitions are wrong, this is 'on', not 'onmessage'
socket.on('message', (body: {}) => {
const request = requests[requestCount];
// @ts-ignore Yes, SHOULD be fixed, this is a mess
const response = request.error
// @ts-ignore Yes, SHOULD be fixed, this is a mess
? createError(request)
// @ts-ignore Yes, SHOULD be fixed, this is a mess
: createReply(request);
scope.body[request.method] = body;
requestCount++;
socket.send(JSON.stringify(response));
});
});
return scope;
}
export {
TEST_WS_URL,
mockWs
};