39cbe50085
* chore(examples): add env-vars example * feat: improve import.meta.env support * chore: add changeset * test: update astro-envs test * refactor: cleanup code based on feedback * fix: import.meta guard * fix: update memory test threshold to 10%
87 lines
2.1 KiB
JavaScript
87 lines
2.1 KiB
JavaScript
import { execa } from 'execa';
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import { fileURLToPath } from 'url';
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import v8 from 'v8';
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import dev from '../../packages/astro/dist/core/dev/index.js';
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import { loadConfig } from '../../packages/astro/dist/core/config.js';
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import prettyBytes from 'pretty-bytes';
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/** URL directory containing the entire project. */
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const projDir = new URL('./project/', import.meta.url);
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function mean(numbers) {
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var total = 0,
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i;
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for (i = 0; i < numbers.length; i += 1) {
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total += numbers[i];
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}
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return total / numbers.length;
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}
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function median(numbers) {
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// median of [3, 5, 4, 4, 1, 1, 2, 3] = 3
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var median = 0,
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numsLen = numbers.length;
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numbers.sort();
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if (
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numsLen % 2 ===
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0 // is even
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) {
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// average of two middle numbers
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median = (numbers[numsLen / 2 - 1] + numbers[numsLen / 2]) / 2;
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} else {
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// is odd
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// middle number only
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median = numbers[(numsLen - 1) / 2];
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}
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return median;
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}
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let config = await loadConfig({
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cwd: fileURLToPath(projDir),
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});
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config.buildOptions.experimentalStaticBuild = true;
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const server = await dev(config, { logging: 'error' });
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// Prime the server so initial memory is created
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await fetch(`http://localhost:3000/page-0`);
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const sizes = [];
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function addSize() {
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sizes.push(v8.getHeapStatistics().total_heap_size);
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}
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async function run() {
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addSize();
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for (let i = 0; i < 100; i++) {
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let path = `/page-${i}`;
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await fetch(`http://localhost:3000${path}`);
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}
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addSize();
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}
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for (let i = 0; i < 100; i++) {
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await run();
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}
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let lastThirthy = sizes.slice(sizes.length - 30);
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let averageOfLastThirty = mean(lastThirthy);
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let medianOfAll = median(sizes);
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// If the trailing average is higher than the median, see if it's more than 5% higher
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if (averageOfLastThirty > medianOfAll) {
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let percentage = Math.abs(averageOfLastThirty - medianOfAll) / medianOfAll;
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if (percentage > 0.1) {
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throw new Error(
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`The average towards the end (${prettyBytes(averageOfLastThirty)}) is more than 10% higher than the median of all runs (${prettyBytes(
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medianOfAll
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)}). This tells us that memory continues to grow and a leak is likely.`
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);
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}
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}
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await server.stop();
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