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