open-nomad/ui/tests/unit/utils/behaviors/stats-tracker-frame-missing.js
2018-11-06 16:17:21 -08:00

98 lines
3 KiB
JavaScript

import { resolve } from 'rsvp';
import wait from 'ember-test-helpers/wait';
import { test } from 'ember-qunit';
import sinon from 'sinon';
const MockResponse = json => ({
ok: true,
json() {
return resolve(json);
},
});
export default function statsTrackerFrameMissing({
resourceName,
TrackerConstructor,
ResourceConstructor,
mockFrame,
compileResources,
}) {
test('a bad response from a fetch request is handled gracefully', function(assert) {
const frame = mockFrame(1);
const [compiledCPU, compiledMemory] = compileResources(frame);
let shouldFail = false;
const fetch = () => {
return resolve(shouldFail ? { ok: false } : new MockResponse(frame));
};
const resource = ResourceConstructor();
const tracker = TrackerConstructor.create({ fetch, [resourceName]: resource });
tracker.get('poll').perform();
return wait()
.then(() => {
assert.deepEqual(tracker.get('cpu'), [compiledCPU], 'One frame of cpu');
assert.deepEqual(tracker.get('memory'), [compiledMemory], 'One frame of memory');
shouldFail = true;
tracker.get('poll').perform();
return wait();
})
.then(() => {
assert.deepEqual(tracker.get('cpu'), [compiledCPU], 'Still one frame of cpu');
assert.deepEqual(tracker.get('memory'), [compiledMemory], 'Still one frame of memory');
assert.equal(tracker.get('frameMisses'), 1, 'Frame miss is tracked');
shouldFail = false;
tracker.get('poll').perform();
return wait();
})
.then(() => {
assert.deepEqual(tracker.get('cpu'), [compiledCPU, compiledCPU], 'Still one frame of cpu');
assert.deepEqual(
tracker.get('memory'),
[compiledMemory, compiledMemory],
'Still one frame of memory'
);
assert.equal(tracker.get('frameMisses'), 0, 'Frame misses is reset');
});
});
test('enough bad responses from fetch consecutively (as set by maxFrameMisses) results in a pause', function(assert) {
const fetch = () => {
return resolve({ ok: false });
};
const resource = ResourceConstructor();
const tracker = TrackerConstructor.create({
fetch,
[resourceName]: resource,
maxFrameMisses: 3,
pause: sinon.spy(),
});
tracker.get('poll').perform();
return wait()
.then(() => {
assert.equal(tracker.get('frameMisses'), 1, 'Tick misses');
assert.notOk(tracker.pause.called, 'Pause not called yet');
tracker.get('poll').perform();
return wait();
})
.then(() => {
assert.equal(tracker.get('frameMisses'), 2, 'Tick misses');
assert.notOk(tracker.pause.called, 'Pause still not called yet');
tracker.get('poll').perform();
return wait();
})
.then(() => {
assert.equal(tracker.get('frameMisses'), 0, 'Misses reset');
assert.ok(tracker.pause.called, 'Pause called now that frameMisses == maxFrameMisses');
});
});
}