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'use strict';
const common = require('../common');
const assert = require('assert');
const {
createHistogram,
performance,
PerformanceObserver
} = require('perf_hooks');
const {
setTimeout: sleep
} = require('timers/promises');
{
// Intentional non-op. Do not wrap in common.mustCall();
const n = performance.timerify(function noop() {});
const obs = new PerformanceObserver(common.mustCall((list) => {
const entries = list.getEntries();
const entry = entries[0];
assert(entry);
assert.strictEqual(entry.name, 'noop');
assert.strictEqual(entry.entryType, 'function');
assert.strictEqual(typeof entry.duration, 'number');
assert.strictEqual(typeof entry.startTime, 'number');
obs.disconnect();
}));
obs.observe({ entryTypes: ['function'] });
n();
}
{
// If the error throws, the error should just be bubbled up and the
// performance timeline entry will not be reported.
const obs = new PerformanceObserver(common.mustNotCall());
obs.observe({ entryTypes: ['function'] });
const n = performance.timerify(() => {
throw new Error('test');
});
assert.throws(() => n(), /^Error: test$/);
obs.disconnect();
}
{
class N {}
const n = performance.timerify(N);
const obs = new PerformanceObserver(common.mustCall((list) => {
const entries = list.getEntries();
const entry = entries[0];
assert.strictEqual(entry[0], 1);
assert.strictEqual(entry[1], 'abc');
assert(entry);
assert.strictEqual(entry.name, 'N');
assert.strictEqual(entry.entryType, 'function');
assert.strictEqual(typeof entry.duration, 'number');
assert.strictEqual(typeof entry.startTime, 'number');
obs.disconnect();
}));
obs.observe({ entryTypes: ['function'] });
new n(1, 'abc');
}
{
[1, {}, [], null, undefined, Infinity].forEach((input) => {
assert.throws(() => performance.timerify(input),
{
code: 'ERR_INVALID_ARG_TYPE',
name: 'TypeError',
message: /The "fn" argument must be of type function/
});
});
}
// Function can only be wrapped once, also check length and name
{
const m = (a, b = 1) => {};
const n = performance.timerify(m);
const o = performance.timerify(m);
const p = performance.timerify(n);
assert.strictEqual(n, o);
assert.strictEqual(n, p);
assert.strictEqual(n.length, m.length);
assert.strictEqual(n.name, 'timerified m');
}
(async () => {
const histogram = createHistogram();
const m = (a, b = 1) => {};
const n = performance.timerify(m, { histogram });
assert.strictEqual(histogram.max, 0);
for (let i = 0; i < 10; i++) {
n();
await sleep(10);
}
assert.notStrictEqual(histogram.max, 0);
[1, '', {}, [], false].forEach((histogram) => {
assert.throws(() => performance.timerify(m, { histogram }), {
code: 'ERR_INVALID_ARG_TYPE'
});
});
})().then(common.mustCall());
(async () => {
const histogram = createHistogram();
const m = async (a, b = 1) => {
await sleep(10);
};
const n = performance.timerify(m, { histogram });
assert.strictEqual(histogram.max, 0);
for (let i = 0; i < 10; i++) {
await n();
}
assert.notStrictEqual(histogram.max, 0);
[1, '', {}, [], false].forEach((histogram) => {
assert.throws(() => performance.timerify(m, { histogram }), {
code: 'ERR_INVALID_ARG_TYPE'
});
});
})().then(common.mustCall());
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