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import AccountDataCache from '../src/main/account-data-cache';
import { IAccountData } from '../src/shared/daemon-rpc-types';
import sinon from 'sinon';
import { expect, spy } from 'chai';
describe('IAccountData cache', () => {
const dummyAccountToken = '9876543210';
const dummyAccountData: IAccountData = {
expiry: new Date('2038-01-01').toISOString(),
};
let clock: sinon.SinonFakeTimers;
beforeEach(() => {
clock = sinon.useFakeTimers({ shouldAdvanceTime: true });
});
afterEach(() => {
clock.restore();
});
it('should notify when fetch succeeds on the first attempt', async () => {
const cache = new AccountDataCache(
(_token) => Promise.resolve(dummyAccountData),
(_data) => {},
);
const watcher = new Promise<void>((resolve, reject) => {
cache.fetch(dummyAccountToken, {
onFinish: () => resolve(),
onError: (_error: Error) => reject(),
});
});
return expect(watcher).to.eventually.be.fulfilled;
});
it('should notify when fetch fails on the first attempt', async () => {
const cache = new AccountDataCache(
(_token) => Promise.reject(new Error('Fetch fail')),
(_data) => {},
);
const watcher = new Promise<void>((resolve, reject) => {
cache.fetch(dummyAccountToken, {
onFinish: (_reason?: any) => resolve(),
onError: (_error: Error) => reject(),
});
});
return expect(watcher).to.eventually.be.rejected;
});
it('should update when fetch succeeds on the first attempt', async () => {
const update = new Promise<void>((resolve, reject) => {
const cache = new AccountDataCache(
(_) => Promise.resolve(dummyAccountData),
() => resolve(),
);
cache.fetch(dummyAccountToken, {
onFinish: () => {},
onError: (_error: Error) => reject(),
});
});
return expect(update).to.eventually.be.fulfilled;
});
it('should update when fetch succeeds on the second attempt', async () => {
const update = new Promise<void>((resolve, reject) => {
let firstAttempt = true;
const fetch = () => {
if (firstAttempt) {
firstAttempt = false;
setTimeout(() => clock.tick(9000), 0);
return Promise.reject(new Error('First attempt fails'));
} else {
resolve();
return Promise.resolve(dummyAccountData);
}
};
const cache = new AccountDataCache(fetch, () => resolve());
cache.fetch(dummyAccountToken, {
onFinish: () => reject(),
onError: (_error: Error) => {},
});
});
return expect(update).to.eventually.be.fulfilled;
});
it('should cancel first fetch', async () => {
const firstError = spy((_error: Error) => {});
const secondSuccess = spy();
const update = new Promise<IAccountData | void>((resolve, reject) => {
let firstAttempt = true;
const fetch = (_token: string) => {
if (firstAttempt) {
firstAttempt = false;
cache.fetch('1231231231', {
onFinish: secondSuccess,
onError: () => reject(),
});
return new Promise<IAccountData>((resolve) => {
setTimeout(() => resolve(dummyAccountData), 1000);
});
} else {
reject();
return Promise.resolve(dummyAccountData);
}
};
const cache = new AccountDataCache(fetch, (_accountData?: IAccountData) => {
resolve();
});
setTimeout(resolve, 12000);
cache.fetch(dummyAccountToken, {
onFinish: reject,
onError: firstError,
});
});
return expect(update).to.eventually.be.fulfilled.then(() => {
expect(firstError).to.have.been.called.once;
expect(secondSuccess).to.have.been.called.once;
return;
});
});
it('should clear scheduled retry if another fetch is performed', async () => {
const firstError = spy();
const secondSuccess = spy();
const updateHandler = spy();
const update = new Promise((resolve, reject) => {
let attempts = 0;
const fetch = () => {
attempts++;
if (attempts === 1) {
return Promise.reject(new Error('First attempt fails'));
} else if (attempts === 2) {
setTimeout(() => clock.tick(8000));
return Promise.resolve(dummyAccountData);
} else {
reject();
return Promise.resolve(dummyAccountData);
}
};
const cache = new AccountDataCache(fetch, updateHandler);
cache.fetch(dummyAccountToken, {
onFinish: () => {},
onError: (_error: Error) => firstError(),
});
setTimeout(() => {
cache.fetch(dummyAccountToken, {
onFinish: () => {
secondSuccess();
setTimeout(resolve);
},
onError: (_error: Error) => {},
});
});
});
return expect(update).to.eventually.be.fulfilled.then(() => {
expect(firstError).to.have.been.called.once;
expect(secondSuccess).to.have.been.called.once;
expect(updateHandler).to.have.been.called.twice;
});
});
it('should not perform a fetch if called twice synchronously', async () => {
const fetchSpy = spy();
const update = new Promise<void>((resolve, _reject) => {
const fetch = () => {
fetchSpy();
return Promise.resolve(dummyAccountData);
};
const cache = new AccountDataCache(fetch, () => {});
const onError = (_error: Error) => {};
cache.fetch(dummyAccountToken, { onFinish: () => {}, onError });
cache.fetch(dummyAccountToken, { onFinish: () => resolve(), onError });
});
return expect(update).to.eventually.be.fulfilled.then(() => {
expect(fetchSpy).to.have.been.called.once;
});
});
it('should refetch one minute before expiry', async () => {
const date = new Date();
date.setMinutes(date.getMinutes() + 3);
const expiry = date.toISOString();
const update = new Promise<void>((resolve, reject) => {
let firstAttempt = true;
const fetch = () => {
if (firstAttempt) {
firstAttempt = false;
setTimeout(() => clock.tick(120_000), 0);
return Promise.resolve({ expiry });
} else {
resolve();
return Promise.resolve({ expiry });
}
};
const cache = new AccountDataCache(fetch, () => {});
cache.fetch(dummyAccountToken, {
onFinish: () => {},
onError: (_error: Error) => reject(),
});
});
return expect(update).to.eventually.be.fulfilled;
});
it('should invalidate after 60 seconds', async () => {
const fetchSpy = spy();
const expiry = new Date(Date.now() + 24 * 60 * 60 * 1000).toISOString();
const update = new Promise<void>((resolve, reject) => {
const cache = new AccountDataCache(
(_accountToken) => {
fetchSpy();
return Promise.resolve({ expiry });
},
() => {},
);
cache.fetch(dummyAccountToken, {
onFinish: async () => {
clock.tick(59_000);
// Timeout to let asynchronous tasks finish
await new Promise((resolve) => setTimeout(resolve));
cache.fetch(dummyAccountToken, {
onFinish: async () => {
clock.tick(1_000);
// Timeout to let asynchronous tasks finish
await new Promise((resolve) => setTimeout(resolve));
cache.fetch(dummyAccountToken, {
onFinish: async () => {
resolve();
},
onError: (_error: Error) => reject(),
});
},
onError: (_error: Error) => reject(),
});
},
onError: (_error: Error) => reject(),
});
});
return expect(update).to.eventually.be.fulfilled.then(() => {
expect(fetchSpy).to.have.been.called.twice;
});
});
it('should invalidate after 10 seconds when epired', async () => {
const fetchSpy = spy();
const expiry = new Date(Date.now() - 24 * 60 * 60 * 1000).toISOString();
const update = new Promise<void>((resolve, reject) => {
const cache = new AccountDataCache(
(_accountToken) => {
fetchSpy();
return Promise.resolve({ expiry });
},
() => {},
);
cache.fetch(dummyAccountToken, {
onFinish: async () => {
clock.tick(9_000);
// Timeout to let asynchronous tasks finish
await new Promise((resolve) => setTimeout(resolve));
cache.fetch(dummyAccountToken, {
onFinish: async () => {
clock.tick(1_000);
// Timeout to let asynchronous tasks finish
await new Promise((resolve) => setTimeout(resolve));
cache.fetch(dummyAccountToken, {
onFinish: async () => {
resolve();
},
onError: (_error: Error) => reject(),
});
},
onError: (_error: Error) => reject(),
});
},
onError: (_error: Error) => reject(),
});
});
return expect(update).to.eventually.be.fulfilled.then(() => {
expect(fetchSpy).to.have.been.called.twice;
});
});
});
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