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iconify/packages/api-redundancy/tests/multiple-resources-test.ts

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import type { RedundancyConfig } from '../src/config';
import { sendQuery } from '../src/query';
describe('Multiple resources', () => {
it('Simple query, success on first attempt', (done) => {
const payload = {};
const resources = ['api1', 'api2'];
const result = {};
const config: RedundancyConfig = {
resources,
index: 0,
timeout: 200,
rotate: 100,
random: false,
dataAfterTimeout: false,
};
// Tracking
let isSync = true;
const startTime = Date.now();
let sentQuery = 0;
// Send query
const getStatus = sendQuery(
config,
payload,
(resource, queryPayload, queryItem) => {
expect(isSync).toEqual(false);
expect(resource).toEqual('api1');
expect(queryPayload).toEqual(payload);
// Query should be executed only once because it should finish before second attempt
expect(sentQuery).toEqual(0);
sentQuery++;
// Check status
expect(queryItem.getQueryStatus).toEqual(getStatus);
const status = getStatus();
expect(status.status).toEqual('pending');
expect(status.payload).toEqual(payload);
expect(status.queriesSent).toEqual(1);
expect(status.queriesPending).toEqual(1);
// Add abort function
queryItem.abort = (): void => {
done('Abort should have not been called');
};
// Complete
queryItem.done(result);
},
(data, error) => {
// Make sure query was sent
expect(sentQuery).toEqual(1);
// Validate data
expect(data).toEqual(result);
expect(error).toBeUndefined();
// Check status
const status = getStatus();
expect(status.status).toEqual('completed');
expect(status.queriesSent).toEqual(1);
expect(status.queriesPending).toEqual(0);
// Should be almost instant
const diff = Date.now() - startTime;
expect(diff).toBeLessThan(50);
done();
},
() => {
done('This should not have been called');
}
);
// Check status
const status = getStatus();
expect(status.status).toEqual('pending');
expect(status.queriesSent).toEqual(0);
expect(status.queriesPending).toEqual(0);
isSync = false;
});
it('Simple query, time out on first, success on second (~100ms)', (done) => {
const payload = {};
const resources = ['api1', 'api2'];
const result = {};
const config: RedundancyConfig = {
resources,
index: 0,
timeout: 200,
rotate: 100,
random: false,
dataAfterTimeout: false,
};
// Tracking
let isSync = true;
const startTime = Date.now();
let sentQuery = 0;
let itemAborted = false;
let parentUpdated = false;
// Send query
const getStatus = sendQuery(
config,
payload,
(resource, queryPayload, queryItem) => {
expect(isSync).toEqual(false);
expect(queryPayload).toEqual(payload);
// Query should be executed twice
expect(sentQuery).toBeLessThan(2);
expect(resource).toEqual(resources[sentQuery]);
// Check status
expect(queryItem.getQueryStatus).toEqual(getStatus);
const status = getStatus();
expect(status.status).toEqual('pending');
expect(status.payload).toEqual(payload);
// Bump counter
sentQuery++;
// All queries should be pending
expect(status.queriesSent).toEqual(sentQuery);
expect(status.queriesPending).toEqual(sentQuery);
// Add abort function
// Time out first, complete second
switch (sentQuery) {
case 1:
queryItem.abort = (): void => {
// First item should be aborted, but only once
expect(itemAborted).toEqual(false);
// When this is executed, counter should have been increased
expect(sentQuery).toEqual(2);
itemAborted = true;
// Do nothing, let it time out
};
return;
case 2:
queryItem.abort = (): void => {
done('Abort should have not been called');
};
// Send result
queryItem.done(result);
return;
default:
done('This code should not have been reached');
}
},
(data, error) => {
// Make sure queries were sent
expect(sentQuery).toEqual(2);
// First query should have been aborted
expect(itemAborted).toEqual(true);
// Validate data
expect(data).toEqual(result);
expect(error).toBeUndefined();
// Check status
const status = getStatus();
expect(status.status).toEqual('completed');
expect(status.queriesSent).toEqual(2);
expect(status.queriesPending).toEqual(0);
// Parent should have been updated
expect(parentUpdated).toEqual(true);
// Delay between first and second queries
const diff = Date.now() - startTime;
expect(diff).toBeGreaterThan(50);
expect(diff).toBeLessThan(150);
done();
},
(newIndex) => {
// Start index should be updated to 1
expect(newIndex).toEqual(1);
parentUpdated = true;
}
);
// Check status
const status = getStatus();
expect(status.status).toEqual('pending');
expect(status.queriesSent).toEqual(0);
expect(status.queriesPending).toEqual(0);
isSync = false;
});
it('Time out all queries (~100ms)', (done) => {
const payload = {};
const resources = ['api1', 'api2'];
const config: RedundancyConfig = {
resources,
index: 0,
timeout: 50,
rotate: 25,
random: false,
dataAfterTimeout: false,
};
// Tracking
let isSync = true;
const startTime = Date.now();
let sentQuery = 0;
let item1Aborted = false;
let item2Aborted = false;
// Send query
const getStatus = sendQuery(
config,
payload,
(resource, queryPayload, queryItem) => {
expect(isSync).toEqual(false);
expect(queryPayload).toEqual(payload);
// Query should be executed twice
expect(sentQuery).toBeLessThan(2);
expect(resource).toEqual(resources[sentQuery]);
// Check status
expect(queryItem.getQueryStatus).toEqual(getStatus);
const status = getStatus();
expect(status.status).toEqual('pending');
expect(status.payload).toEqual(payload);
// Bump counter
sentQuery++;
// All queries should be pending
expect(status.queriesSent).toEqual(sentQuery);
expect(status.queriesPending).toEqual(sentQuery);
// Add abort functions
switch (sentQuery) {
case 1:
queryItem.abort = (): void => {
expect(item1Aborted).toEqual(false);
expect(item2Aborted).toEqual(false);
// This should have been executed at the end
expect(sentQuery).toEqual(2);
item1Aborted = true;
// Do not send anything
};
return;
case 2:
queryItem.abort = (): void => {
expect(item1Aborted).toEqual(true);
expect(item2Aborted).toEqual(false);
// This should have been executed at the end
expect(sentQuery).toEqual(2);
item2Aborted = true;
// Do not send anything
};
return;
default:
done('This code should not have been reached');
}
},
(data, error) => {
// Make sure queries were sent
expect(sentQuery).toEqual(2);
// Queries should have been aborted
expect(item1Aborted).toEqual(true);
expect(item2Aborted).toEqual(true);
// Validate data
expect(data).toBeUndefined();
expect(error).toBeUndefined();
// Check status
const status = getStatus();
expect(status.status).toEqual('failed');
expect(status.queriesSent).toEqual(2);
expect(status.queriesPending).toEqual(0);
// rotate * 2 + timeout
const diff = Date.now() - startTime;
expect(diff).toBeGreaterThan(90);
expect(diff).toBeLessThan(120);
done();
},
() => {
done('This should have never been called');
}
);
// Check status
const status = getStatus();
expect(status.status).toEqual('pending');
expect(status.queriesSent).toEqual(0);
expect(status.queriesPending).toEqual(0);
isSync = false;
});
it('Start with second resource (~100ms)', (done) => {
const payload = {};
const resources = ['api1', 'api2'];
const config: RedundancyConfig = {
resources,
index: 1,
timeout: 50,
rotate: 25,
random: false,
dataAfterTimeout: false,
};
// Tracking
let isSync = true;
const startTime = Date.now();
let sentQuery = 0;
let item1Aborted = false;
let item2Aborted = false;
// Send query
const getStatus = sendQuery(
config,
payload,
(resource, queryPayload, queryItem) => {
expect(isSync).toEqual(false);
expect(queryPayload).toEqual(payload);
// Resource order should be: 1, 0
expect(resource).not.toEqual(resources[sentQuery]);
expect(resource).toEqual(resources[1 - sentQuery]);
// Bump counter
sentQuery++;
// Add abort functions
switch (sentQuery) {
case 1:
queryItem.abort = (): void => {
item1Aborted = true;
};
return;
case 2:
queryItem.abort = (): void => {
item2Aborted = true;
};
return;
default:
done('This code should not have been reached');
}
},
(data, error) => {
// Make sure queries were sent
expect(sentQuery).toEqual(2);
// Queries should have been aborted
expect(item1Aborted).toEqual(true);
expect(item2Aborted).toEqual(true);
// Validate data
expect(data).toBeUndefined();
expect(error).toBeUndefined();
// rotate * 2 + timeout
const diff = Date.now() - startTime;
expect(diff).toBeGreaterThan(90);
expect(diff).toBeLessThan(120);
done();
},
() => {
done('This should have never been called');
}
);
// Check status
const status = getStatus();
expect(status.status).toEqual('pending');
expect(status.queriesSent).toEqual(0);
expect(status.queriesPending).toEqual(0);
isSync = false;
});
it('Start with last resource (~150ms)', (done) => {
const payload = {};
const resources = ['api1', 'api2', 'api3', 'api4'];
const config: RedundancyConfig = {
resources,
index: 3,
timeout: 50,
rotate: 25,
random: false,
dataAfterTimeout: false,
};
// Tracking
let isSync = true;
let sentQuery = 0;
const startTime = Date.now();
// Send query
const getStatus = sendQuery(
config,
payload,
(resource, queryPayload) => {
expect(isSync).toEqual(false);
expect(queryPayload).toEqual(payload);
// Resource order should be: 3, 0, 1, 2
expect(resource).not.toEqual(resources[sentQuery]);
const expectedIndex = sentQuery === 0 ? 3 : sentQuery - 1;
expect(resource).toEqual(resources[expectedIndex]);
// Bump counter
sentQuery++;
},
(data, error) => {
// Make sure queries were sent
expect(sentQuery).toEqual(4);
// Validate data
expect(data).toBeUndefined();
expect(error).toBeUndefined();
// rotate * 4 + timeout
const diff = Date.now() - startTime;
expect(diff).toBeGreaterThan(140);
expect(diff).toBeLessThan(170);
done();
},
() => {
done('This should have never been called');
}
);
// Check status
const status = getStatus();
expect(status.status).toEqual('pending');
expect(status.queriesSent).toEqual(0);
expect(status.queriesPending).toEqual(0);
isSync = false;
});
});