openethereum/js/packages/shared/redux/providers/chainMiddleware.spec.js

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// Copyright 2015-2017 Parity Technologies (UK) Ltd.
// This file is part of Parity.
// Parity is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Parity is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
import sinon from 'sinon';
import Contracts from '@parity/shared/contracts';
import { initialState as defaultNodeStatusState } from './statusReducer';
import ChainMiddleware from './chainMiddleware';
import { createWsApi } from '../../../../test/e2e/ethapi';
let middleware;
let next;
let store;
let clock;
const api = createWsApi();
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Contracts.get(api);
function stubGlobals () {
clock = sinon.useFakeTimers();
sinon.spy(window.location, 'reload');
}
function restoreGlobals () {
window.location.reload.restore();
clock.restore();
}
function createMiddleware (collection = {}) {
middleware = new ChainMiddleware().toMiddleware();
next = sinon.stub();
store = {
dispatch: sinon.stub(),
getState: () => {
return {
api: api,
nodeStatus: Object.assign({}, defaultNodeStatusState, collection)
};
}
};
return middleware;
}
function callMiddleware (action) {
const result = middleware(store)(next)(action);
clock.tick(100);
return result;
}
describe('reduxs/providers/ChainMiddleware', () => {
beforeEach(() => {
stubGlobals();
});
afterEach(() => {
restoreGlobals();
});
describe('next action', () => {
beforeEach(() => {
createMiddleware();
});
it('calls next with matching actiontypes', () => {
callMiddleware({ type: 'statusCollection' });
expect(next).to.have.been.calledWithMatch({ type: 'statusCollection' });
});
it('calls next with non-matching actiontypes', () => {
callMiddleware({ type: 'nonMatchingType' });
expect(next).to.have.been.calledWithMatch({ type: 'nonMatchingType' });
});
});
describe('chain switching', () => {
it('does not reload when moving from the initial/unknown chain', () => {
createMiddleware();
callMiddleware({ type: 'statusCollection', collection: { netChain: 'homestead' } });
expect(window.location.reload).not.to.have.been.called;
});
it('does not reload when moving to the same chain', () => {
createMiddleware({ netChain: 'homestead' });
callMiddleware({ type: 'statusCollection', collection: { netChain: 'homestead' } });
expect(window.location.reload).not.to.have.been.called;
});
it('does reload when moving between chains', () => {
createMiddleware({ netChain: 'homestead' });
callMiddleware({ type: 'statusCollection', collection: { netChain: 'ropsten' } });
expect(window.location.reload).to.have.been.called;
});
});
});