103 lines
2.5 KiB
JavaScript
103 lines
2.5 KiB
JavaScript
// Copyright 2015-2017 Parity Technologies (UK) Ltd.
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// This file is part of Parity.
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// Parity is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity. If not, see <http://www.gnu.org/licenses/>.
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import BigNumber from 'bignumber.js';
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import sinon from 'sinon';
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import Eth from './eth';
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const START_BLOCK = 5000;
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function stubApi (blockNumber) {
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const _calls = {
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blockNumber: []
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};
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return {
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_calls,
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transport: {
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isConnected: true,
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on: () => {}
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},
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eth: {
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blockNumber: () => {
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const stub = sinon.stub().resolves(new BigNumber(blockNumber || START_BLOCK))();
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_calls.blockNumber.push(stub);
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return stub;
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}
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}
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};
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}
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describe('api/subscriptions/eth', () => {
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let api;
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let eth;
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let cb;
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beforeEach(() => {
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api = stubApi();
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cb = sinon.stub();
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eth = new Eth(cb, api);
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});
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describe('constructor', () => {
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it('starts the instance in a stopped state', () => {
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expect(eth.isStarted).to.be.false;
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});
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});
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describe('start', () => {
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describe('blockNumber available', () => {
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beforeEach(() => {
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return eth.start();
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});
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it('sets the started status', () => {
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expect(eth.isStarted).to.be.true;
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});
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it('calls eth_blockNumber', () => {
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expect(api._calls.blockNumber.length).to.be.ok;
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});
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it('updates subscribers', () => {
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expect(cb).to.have.been.calledWith('eth_blockNumber', null, new BigNumber(START_BLOCK));
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});
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});
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describe('blockNumber not available', () => {
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beforeEach(() => {
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api = stubApi(-1);
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eth = new Eth(cb, api);
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return eth.start();
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});
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it('sets the started status', () => {
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expect(eth.isStarted).to.be.true;
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});
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it('calls eth_blockNumber', () => {
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expect(api._calls.blockNumber.length).to.be.ok;
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});
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it('does not update subscribers', () => {
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expect(cb).not.to.been.called;
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});
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});
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});
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});
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