178fe215a41. custom inspect test case Refs: https://coverage.nodejs.org/coverage-18e4f405b14b26f9/lib/internal/histogram.js.html#L56 2. tests that RecordableHistogram is impossible to construct manually Refs: https://coverage.nodejs.org/coverage-18e4f405b14b26f9/lib/internal/histogram.js.html#L132 PR-URL: https://github.com/nodejs/node/pull/38555 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Darshan Sen <raisinten@gmail.com>
85 lines
2.1 KiB
JavaScript
85 lines
2.1 KiB
JavaScript
'use strict';
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const common = require('../common');
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const assert = require('assert');
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const {
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createHistogram,
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monitorEventLoopDelay,
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} = require('perf_hooks');
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const { inspect } = require('util');
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{
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const h = createHistogram();
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assert.strictEqual(h.min, 9223372036854776000);
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assert.strictEqual(h.max, 0);
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assert.strictEqual(h.exceeds, 0);
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assert(Number.isNaN(h.mean));
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assert(Number.isNaN(h.stddev));
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h.record(1);
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[false, '', {}, undefined, null].forEach((i) => {
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assert.throws(() => h.record(i), {
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code: 'ERR_INVALID_ARG_TYPE'
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});
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});
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assert.throws(() => h.record(0, Number.MAX_SAFE_INTEGER + 1), {
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code: 'ERR_OUT_OF_RANGE'
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});
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assert.strictEqual(h.min, 1);
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assert.strictEqual(h.max, 1);
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assert.strictEqual(h.exceeds, 0);
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assert.strictEqual(h.mean, 1);
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assert.strictEqual(h.stddev, 0);
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assert.strictEqual(h.percentile(1), 1);
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assert.strictEqual(h.percentile(100), 1);
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const mc = new MessageChannel();
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mc.port1.onmessage = common.mustCall(({ data }) => {
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assert.strictEqual(h.min, 1);
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assert.strictEqual(h.max, 1);
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assert.strictEqual(h.exceeds, 0);
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assert.strictEqual(h.mean, 1);
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assert.strictEqual(h.stddev, 0);
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data.record(2n);
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data.recordDelta();
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assert.strictEqual(h.max, 2);
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mc.port1.close();
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});
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mc.port2.postMessage(h);
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}
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{
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const e = monitorEventLoopDelay();
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e.enable();
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const mc = new MessageChannel();
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mc.port1.onmessage = common.mustCall(({ data }) => {
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assert(typeof data.min, 'number');
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assert(data.min > 0);
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assert.strictEqual(data.disable, undefined);
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assert.strictEqual(data.enable, undefined);
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mc.port1.close();
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});
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setTimeout(() => mc.port2.postMessage(e), 100);
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}
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{
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const h = createHistogram();
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assert(inspect(h, { depth: null }).startsWith('Histogram'));
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assert.strictEqual(inspect(h, { depth: -1 }), '[RecordableHistogram]');
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}
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{
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// Tests that RecordableHistogram is impossible to construct manually
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const h = createHistogram();
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assert.throws(
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() => new h.constructor(),
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/^TypeError: illegal constructor$/
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);
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}
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