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lint-spec.ts
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lint-spec.ts
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import fileLinesCount from 'file-lines-count';
import fs from 'fs';
import p from 'path';
import yargs from 'yargs/yargs';
import {LintReporter} from './lib/lint-reporter';
import {fromRoot, SpecDirectory} from './lib/spec-directory';
import RealDirectory from './lib/spec-directory/real-directory';
import VirtualDirectory from './lib/spec-directory/virtual-directory';
async function lintAllTests(fix: boolean) {
try {
const rootPath = p.resolve(process.cwd(), 'spec');
const rootDir = (await fromRoot(rootPath)) as RealDirectory;
const reporter = new LintReporter(process.stdout, rootPath);
await lintDirectory(rootDir, reporter, {canBeHrxRoot: true, fix});
await lintHrxSize(rootDir, reporter, {fix});
reporter.writeSummary();
process.exitCode = reporter.exitCode();
} catch (error) {
console.log(`${error}`);
process.exitCode = 255;
}
}
async function lintDirectory(
directory: SpecDirectory,
reporter: LintReporter,
{canBeHrxRoot = false, fix = false}
) {
if (directory instanceof VirtualDirectory && canBeHrxRoot) {
const hrxPath = directory.basePath + '.hrx';
const actualSource = await fs.promises.readFile(hrxPath, {
encoding: 'utf-8',
});
const expectedSource = await directory.asArchive();
if (actualSource !== expectedSource) {
if (fix) {
await fs.promises.writeFile(hrxPath, expectedSource, {
encoding: 'utf-8',
});
} else {
reporter.reportError(
'The file does not match the formatting of the styleguide.',
getRelativePath(hrxPath),
true
);
}
}
}
if (directory.isTestDir()) {
reporter.reportLintedFile(directory.path);
if (directory.hasFile('input.sass') && directory.hasFile('input.scss')) {
reporter.reportError(
`The test directory "${getRelativePath(
directory.path
)}" cannot have both input.sass and input.scss`,
getReportedInputLocation(directory)
);
}
await lintNestedTestDirectories(
directory,
getRelativePath(directory.path),
reporter
);
await lintNonHrxTestDir(directory, reporter, {fix});
} else {
for (const subdir of await directory.subdirs()) {
await lintDirectory(subdir, reporter, {
canBeHrxRoot: !(directory instanceof VirtualDirectory),
fix,
});
}
}
}
async function lintNestedTestDirectories(
directory: SpecDirectory,
basePath: string,
reporter: LintReporter
) {
for (const subdir of await directory.subdirs()) {
if (subdir.isTestDir()) {
reporter.reportError(
`The test directory "${getRelativePath(
subdir.path
)}" cannot be nested in the test directory "${basePath}".`,
getReportedInputLocation(directory)
);
} else {
await lintNestedTestDirectories(subdir, basePath, reporter);
}
}
}
function getReportedInputLocation(directory: SpecDirectory): string {
if (directory instanceof VirtualDirectory) {
return getRelativePath(directory.basePath + '.hrx');
}
if (directory.hasFile('input.sass')) {
return getRelativePath(p.resolve(directory.path, 'input.sass'));
}
return getRelativePath(p.resolve(directory.path, 'input.scss'));
}
function getRelativePath(filepath: string): string {
return p.relative(process.cwd(), filepath);
}
/**
* Verifies that test directories are stored as HRX files.
*
* Test directories are transformed into HRX files when {@link fix} is
* `true`.
*
* Skips directories that include a top-level `options.yml` file annotated with
* `:todo:` or `:ignore-for:` containing `lint-hrx` or `sass/sass-spec#ISSUE`.
* This allows keeping a real directory when files contain invalid UTF-8 or a BOM, as
* those cannot be represented in HRX files.
*/
async function lintNonHrxTestDir(
directory: SpecDirectory,
reporter: LintReporter,
{fix = false}
) {
if (!directory.isTestDir()) return;
if (directory instanceof VirtualDirectory) return;
const options = await directory.options();
const linterAnnotation =
options.getMode('lint-hrx') ?? options.getMode('sass/sass-spec#');
// Skip XHR files annotated with :ignore-for: or :todo: containing
// `lint-hrx` or `sass/sass-spec#...`
if (linterAnnotation !== undefined) return;
if (!fix) {
reporter.reportError(
`The test directory "${getRelativePath(
directory.path
)}" must use the HRX format.`,
getReportedInputLocation(directory)
);
} else {
fs.writeFileSync(`${directory.path}.hrx`, await directory.asArchive());
fs.rmSync(directory.path, {recursive: true});
}
}
/** The number of lines allowed in HRX files. */
const LINE_THRESHOLD = 500;
/**
* Verifies all HRX files in {@link dir} directory are under the {@link
* LINE_THRESHOLD}.
*
* HRX files are unwrapped and transformed into real files when {@link fix} is
* `true`.
*/
async function lintHrxSize(
dir: RealDirectory,
reporter: LintReporter,
{fix = false}
) {
const tooBig = await bigHrx(dir, reporter);
// No Errors.
if (tooBig.length === 0) return;
if (!fix) {
for (const dir of tooBig) {
reporter.reportError(
`HRX file exceeds ${LINE_THRESHOLD} lines`,
getRelativePath(dir.path),
true
);
}
} else {
for (const archive of tooBig) {
await hrxToRealFiles(archive);
// Fixes files recursively.
await lintHrxSize(
(await dir.atPath(archive.relPath())) as RealDirectory,
reporter,
{fix}
);
}
}
}
/**
* Transforms one level of a given HRX file into real files.
*
* Given:
* ```
* root
* |- foo.hrx (real)
* |- file1 (virtual)
* |- file2 (virtual)
* |- dir1 (virtual)
* | |- file2 (virtual)
* | |- dir2 (virtual)
* | |- dir3 (virtual)
* |- dir4 (virtual)
* ```
*
* Deletes `foo.hrx` and generates:
* ```
* root
* |- foo (real)
* |- file1 (real)
* |- file2 (real)
* |- dir1.hrx (real)
* | |- file2 (virtual)
* | |- dir2 (virtual)
* | |- dir3 (virtual)
* |- dir4.hrx (real)
* ```
*
*/
async function hrxToRealFiles(archive: VirtualDirectory) {
fs.mkdirSync(archive.path, {recursive: true});
for (const file of await archive.listFiles()) {
const contents = await archive.readFile(file);
fs.writeFileSync(p.join(archive.path, file), contents);
}
for (const subdir of await archive.subdirs()) {
const subArchivePath = `${subdir.path}.hrx`;
fs.writeFileSync(subArchivePath, await subdir.asArchive());
}
fs.unlinkSync(archive.path);
}
/**
* Returns the absolute paths of all HRX files in {@link dir} that exceed the
* {@link LINE_THRESHOLD}.
*
* Skips HRX files that include a top-level `options.yml` file annotated with
* `:todo:` or `:ignore-for:` containing `lint-hrx` or `sass/sass-spec#ISSUE`.
* For example:
*
* ```hrx
* <===> options.yml
* # Ignored because <SOME REASON>
* :todo:
* - sass/sass-spec#1817
* ```
* or
* ```hrx
* <===> options.yml
* # Ignored because <SOME REASON>
* :ignore_for:
* - lint-hrx
* ```
*/
async function bigHrx(
dir: RealDirectory,
reporter: LintReporter
): Promise<VirtualDirectory[]> {
const tooBig: VirtualDirectory[] = [];
for (const subdir of await dir.subdirs()) {
if (subdir.isTestDir()) continue;
if (subdir instanceof RealDirectory) {
tooBig.push(...(await bigHrx(subdir, reporter)));
continue;
}
const hrxPath = subdir.path + '.hrx';
reporter.reportLintedFile(hrxPath);
const options = await subdir.options();
const linterAnnotation =
options.getMode('lint-hrx') ?? options.getMode('sass/sass-spec#');
// Skip XHR files annotated with :ignore-for: or :todo: containing
// `lint-hrx` or `sass/sass-spec#...`
if (linterAnnotation !== undefined) continue;
const lines = await fileLinesCount(hrxPath);
if (lines > LINE_THRESHOLD) tooBig.push(subdir as VirtualDirectory);
}
return tooBig;
}
const args = yargs(process.argv.slice(2)).boolean('fix');
const argv = args.parseSync();
lintAllTests(argv.fix ?? false);