108 lines
3.2 KiB
TypeScript
108 lines
3.2 KiB
TypeScript
import { readdirSync, readFileSync } from 'fs';
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import { join } from 'path';
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import { defineConfig } from 'vitest/config';
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import { svgPath } from './scripts/svg-path-plugin.js';
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const EXCLUSIONS = [
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'.eslintrc.cjs',
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'docs/**',
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'tests/**',
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// Web-components.
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'src/card.ts',
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'src/components/**/*.ts',
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'src/editor.ts',
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// Timeline controller (can be added later).
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'src/components-lib/timeline/controller.ts',
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// HA patches.
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'src/patches/**/*.ts',
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];
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const TEST_DIRECTORY = 'tests';
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const INCLUSIONS = [`${TEST_DIRECTORY}/**/*.test.ts`];
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// For test performance reasons, tests are split into two groups:
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//
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// - `shared`: run non-isolated, so they share one loaded copy of the source
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// tree instead of each re-importing it.
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// - `isolated`: given their own module registry per file, because sharing one
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// would change their behaviour. A file calling `vi.mock()` cannot replace a
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// module an earlier file already loaded unmocked; a file loading the template
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// renderer reads browser globals as the renderer loads; and a file needing a
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// DOM leaves modules holding a `window` that is torn down when it finishes,
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// which breaks any later file that reaches one of those modules.
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//
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// Absent this variable every test file runs isolated, which is both the safe
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// default and what coverage requires (istanbul only counts a module's top-level
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// code the first time it runs).
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const GROUP = process.env.VITEST_GROUP;
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const findTestFiles = (directory: string): string[] => {
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const files: string[] = [];
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for (const entry of readdirSync(directory, { withFileTypes: true })) {
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const path = join(directory, entry.name);
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if (entry.isDirectory()) {
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files.push(...findTestFiles(path));
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} else if (entry.name.endsWith('.test.ts')) {
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files.push(path);
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}
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}
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return files;
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};
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const REQUIRE_ISOLATION_REGEXP =
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/\bvi\.(do)?mock\(|loadRenderer|stubConnectedHomeAssistant|@vitest-environment\s+jsdom/;
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const getGroup = (file: string): string =>
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REQUIRE_ISOLATION_REGEXP.test(readFileSync(file, 'utf-8')) ? 'isolated' : 'shared';
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const getInclusions = (): string[] =>
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GROUP
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? findTestFiles(TEST_DIRECTORY).filter((file) => getGroup(file) === GROUP)
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: INCLUSIONS;
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export default defineConfig({
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plugins: [svgPath()],
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test: {
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server: {
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deps: {
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// These dependencies import without extensions.
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// Related: https://github.com/vitest-dev/vitest/issues/2313
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inline: ['ha-nunjucks', 'ts-py-datetime'],
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},
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},
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include: getInclusions(),
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// Forked child processes start and tear down faster here than worker
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// threads, which matters when every test file needs a fresh one.
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pool: 'forks',
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isolate: !GROUP || GROUP === 'isolated',
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// Hide console writing to keep output clean, usual sources of noise:
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// - Unnecessary Lit dev-mode warnings.
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// - Various console outputs (that are expected/tested).
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onConsoleLog: () => false,
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coverage: {
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exclude: EXCLUSIONS,
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// Favor istanbul for coverage over v8 due to better accuracy.
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provider: 'istanbul',
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thresholds: {
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perFile: true,
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'src/**/*.ts': {
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statements: 100,
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branches: 100,
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functions: 100,
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lines: 100,
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},
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},
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},
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},
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});
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