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Allow zero/negative performance timings #1769

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merged 7 commits into from
Jan 20, 2021
Merged

Allow zero/negative performance timings #1769

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97f219a
fix: allow zero/negative performance timings
johnbley Dec 18, 2020
419bb5a
chore: run lint:fix
johnbley Dec 18, 2020
eff74c4
Merge branch 'master' into master
johnbley Jan 4, 2021
70948bc
chore: add tests for 0 and negative values
johnbley Jan 4, 2021
3a0c15f
Merge branch 'master' into master
johnbley Jan 5, 2021
3ee328a
Merge branch 'master' into master
dyladan Jan 20, 2021
a0768d4
Merge branch 'master' into master
dyladan Jan 20, 2021
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1 change: 1 addition & 0 deletions packages/opentelemetry-web/src/enums/PerformanceTimingNames.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -27,6 +27,7 @@ export enum PerformanceTimingNames {
FETCH_START = 'fetchStart',
LOAD_EVENT_END = 'loadEventEnd',
LOAD_EVENT_START = 'loadEventStart',
NAVIGATION_START = 'navigationStart',
REDIRECT_END = 'redirectEnd',
REDIRECT_START = 'redirectStart',
REQUEST_START = 'requestStart',
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5 changes: 0 additions & 5 deletions packages/opentelemetry-web/src/utils.ts
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Expand Up @@ -56,11 +56,6 @@ export function addSpanNetworkEvent(
hasKey(entries, performanceName) &&
typeof entries[performanceName] === 'number'
) {
// some metrics are available but have value 0 which means they are invalid
// for example "secureConnectionStart" is 0 which makes the events to be wrongly interpreted
if (entries[performanceName] === 0) {
return undefined;
}
span.addEvent(performanceName, entries[performanceName]);
return span;
}
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52 changes: 29 additions & 23 deletions packages/opentelemetry-web/test/utils.test.ts
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Expand Up @@ -164,40 +164,46 @@ describe('utils', () => {
});
});
describe('addSpanNetworkEvent', () => {
describe('when entries contain the performance', () => {
it('should add event to span', () => {
const addEventSpy = sinon.spy();
const span = ({
addEvent: addEventSpy,
} as unknown) as tracing.Span;
const entries = {
[PTN.FETCH_START]: 123,
} as PerformanceEntries;

assert.strictEqual(addEventSpy.callCount, 0);

addSpanNetworkEvent(span, PTN.FETCH_START, entries);

assert.strictEqual(addEventSpy.callCount, 1);
const args = addEventSpy.args[0];

assert.strictEqual(args[0], 'fetchStart');
assert.strictEqual(args[1], 123);
[0, -2, 123].forEach(value => {
describe(`when entry is ${value}`, () => {
it('should add event to span', () => {
const addEventSpy = sinon.spy();
const span = ({
addEvent: addEventSpy,
} as unknown) as tracing.Span;
const entries = {
[PTN.FETCH_START]: value,
} as PerformanceEntries;

assert.strictEqual(addEventSpy.callCount, 0);

addSpanNetworkEvent(span, PTN.FETCH_START, entries);

assert.strictEqual(addEventSpy.callCount, 1);
const args = addEventSpy.args[0];

assert.strictEqual(args[0], 'fetchStart');
assert.strictEqual(args[1], value);
});
});
});
describe('when entry has time equal to 0', () => {
describe('when entry is not numeric', () => {
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I think you should still have unit test when time is 0 - this is basically what you are fixing in this PR right ?

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Good call; I updated the positive test to check 0, a negative number, and a positive number.

it('should NOT add event to span', () => {
const addEventSpy = sinon.spy();
const span = ({
addEvent: addEventSpy,
} as unknown) as tracing.Span;
const entries = {
[PTN.FETCH_START]: 0,
} as PerformanceEntries;
[PTN.FETCH_START]: 'non-numeric',
} as unknown;

assert.strictEqual(addEventSpy.callCount, 0);

addSpanNetworkEvent(span, PTN.FETCH_START, entries);
addSpanNetworkEvent(
span,
PTN.FETCH_START,
entries as PerformanceEntries
);

assert.strictEqual(addEventSpy.callCount, 0);
});
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