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fix(test-utils): use correct base
Nate Moore
(Mar 24, 2026, 10:52 PM EDT)
9d7ff09c
f9719a07
+140
-140
+140
-140
src/test-utils.ts
+140
-140
src/test-utils.ts
···
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7
import { expect, onTestFinished } from "vitest";
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interface ScopedHfsImpl extends HfsImpl {
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-
text(file: string | URL): Promise<string | undefined>;
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json(file: string | URL): Promise<unknown | undefined>;
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text(file: string | URL): Promise<string | undefined>;
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json(file: string | URL): Promise<unknown | undefined>;
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}
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/**
···
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* Includes all `hfs` methods — paths are resolved relative to the fixture root.
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*/
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export interface Fixture extends ScopedHfsImpl {
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/** The fixture root as a `file://` URL. */
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root: URL;
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/** Resolve a relative path within the fixture root. */
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resolve: (...segments: string[]) => URL;
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/** Delete the fixture directory. Also runs automatically via `onTestFinished`. */
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cleanup: () => Promise<void>;
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/** The fixture root as a `file://` URL. */
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root: URL;
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/** Resolve a relative path within the fixture root. */
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resolve: (...segments: string[]) => URL;
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/** Delete the fixture directory. Also runs automatically via `onTestFinished`. */
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cleanup: () => Promise<void>;
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}
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/** Context passed to dynamic file content functions. */
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export interface FileContext {
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/**
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* Metadata about the fixture root, analogous to `import.meta`.
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*
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* - `url` — the fixture root as a `file://` URL string
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* - `filename` — absolute filesystem path to the fixture root
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* - `dirname` — same as `filename` (root is a directory)
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* - `resolve(path)` — resolve a relative path against the fixture root
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*/
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importMeta: {
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url: string;
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filename: string;
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dirname: string;
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resolve: (path: string) => string;
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};
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/**
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* Create a symbolic link to `target`.
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*
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* Returns a `SymlinkMarker` — the fixture will create the symlink on disk.
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*
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* @example
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* ```ts
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* { 'link.txt': ({ symlink }) => symlink('./target.txt') }
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* ```
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*/
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symlink: (target: string) => SymlinkMarker;
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/**
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* Metadata about the fixture root, analogous to `import.meta`.
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*
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* - `url` — the fixture root as a `file://` URL string
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* - `filename` — absolute filesystem path to the fixture root
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* - `dirname` — same as `filename` (root is a directory)
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* - `resolve(path)` — resolve a relative path against the fixture root
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*/
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importMeta: {
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url: string;
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filename: string;
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dirname: string;
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resolve: (path: string) => string;
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};
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/**
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* Create a symbolic link to `target`.
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*
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* Returns a `SymlinkMarker` — the fixture will create the symlink on disk.
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*
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* @example
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* ```ts
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* { 'link.txt': ({ symlink }) => symlink('./target.txt') }
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* ```
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*/
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symlink: (target: string) => SymlinkMarker;
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}
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const SYMLINK = Symbol("symlink");
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/** Opaque marker returned by `ctx.symlink()`. */
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export interface SymlinkMarker {
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[SYMLINK]: true;
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target: string;
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[SYMLINK]: true;
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target: string;
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}
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/**
···
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* | Function | `({ importMeta, symlink }) => symlink('./target')` |
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*/
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export type FileTreeValue =
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| string
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| Buffer
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| Record<string, unknown>
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| unknown[]
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| FileTree
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| ((ctx: FileContext) => string | Buffer | SymlinkMarker);
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| string
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| Buffer
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| Record<string, unknown>
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| unknown[]
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| FileTree
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| ((ctx: FileContext) => string | Buffer | SymlinkMarker);
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/** A recursive tree of files and directories. */
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export interface FileTree {
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[key: string]: FileTreeValue;
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[key: string]: FileTreeValue;
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}
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function isSymlinkMarker(value: unknown): value is SymlinkMarker {
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return typeof value === "object" && value !== null && SYMLINK in value;
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return typeof value === "object" && value !== null && SYMLINK in value;
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}
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function isFileTree(value: unknown): value is FileTree {
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return (
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typeof value === "object" &&
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value !== null &&
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!Buffer.isBuffer(value) &&
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!Array.isArray(value) &&
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!isSymlinkMarker(value)
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);
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return (
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typeof value === "object" &&
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value !== null &&
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!Buffer.isBuffer(value) &&
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!Array.isArray(value) &&
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!isSymlinkMarker(value)
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);
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}
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function scopeHfs(inner: NodeHfs, base: URL): ScopedHfsImpl {
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const r = (p: string | URL) => new URL(`./${p}`, base);
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const r2 = (a: string | URL, b: string | URL) => [r(a), r(b)] as const;
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const r = (p: string | URL) => new URL(`./${p}`, base);
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const r2 = (a: string | URL, b: string | URL) => [r(a), r(b)] as const;
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return {
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text: (p: string | URL) => inner.text(r(p)),
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json: (p: string | URL) => inner.json(r(p)),
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bytes: (p) => inner.bytes(r(p)),
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write: (p, c) => inner.write(r(p), c),
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append: (p, c) => inner.append(r(p), c),
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isFile: (p) => inner.isFile(r(p)),
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isDirectory: (p) => inner.isDirectory(r(p)),
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createDirectory: (p) => inner.createDirectory(r(p)),
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delete: (p) => inner.delete(r(p)),
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deleteAll: (p) => inner.deleteAll(r(p)),
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list: (p) => inner.list(r(p)),
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size: (p) => inner.size(r(p)),
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lastModified: (p) => inner.lastModified(r(p)),
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copy: (s, d) => inner.copy(...r2(s, d)),
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copyAll: (s, d) => inner.copyAll(...r2(s, d)),
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move: (s, d) => inner.move(...r2(s, d)),
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moveAll: (s, d) => inner.moveAll(...r2(s, d)),
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};
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return {
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text: (p: string | URL) => inner.text(r(p)),
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json: (p: string | URL) => inner.json(r(p)),
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bytes: (p) => inner.bytes(r(p)),
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write: (p, c) => inner.write(r(p), c),
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append: (p, c) => inner.append(r(p), c),
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isFile: (p) => inner.isFile(r(p)),
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isDirectory: (p) => inner.isDirectory(r(p)),
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createDirectory: (p) => inner.createDirectory(r(p)),
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delete: (p) => inner.delete(r(p)),
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deleteAll: (p) => inner.deleteAll(r(p)),
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list: (p) => inner.list(r(p)),
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size: (p) => inner.size(r(p)),
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lastModified: (p) => inner.lastModified(r(p)),
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copy: (s, d) => inner.copy(...r2(s, d)),
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copyAll: (s, d) => inner.copyAll(...r2(s, d)),
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move: (s, d) => inner.move(...r2(s, d)),
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moveAll: (s, d) => inner.moveAll(...r2(s, d)),
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};
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}
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/**
···
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* ```
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*/
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export async function createFixture(files: FileTree): Promise<Fixture> {
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const raw = expect.getState().currentTestName ?? "bsh";
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const prefix = raw
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.toLowerCase()
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.replace(/[^a-z0-9]+/g, "-")
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.replace(/^-|-$/g, "");
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const root = new URL(`${prefix}-`, `file://${tmpdir()}/`);
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const path = await mkdtemp(fileURLToPath(root));
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const base = pathToFileURL(path + sep);
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const raw = expect.getState().currentTestName ?? "bsh";
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const prefix = raw
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.toLowerCase()
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.replace(/[^a-z0-9]+/g, "-")
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.replace(/^-|-$/g, "");
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const root = new URL(`${prefix}-`, `file://${tmpdir()}/`);
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const path = await mkdtemp(fileURLToPath(root));
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const base = pathToFileURL(path + sep);
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const inner = new NodeHfs();
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const scoped = scopeHfs(inner, base);
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const resolve = (...segments: string[]) => new URL(`./${segments.join("/")}`, base);
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const inner = new NodeHfs();
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const scoped = scopeHfs(inner, base);
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const resolve = (...segments: string[]) => new URL(`./${segments.join("/")}`, base);
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const ctx: FileContext = {
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importMeta: {
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url: base.toString(),
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filename: fileURLToPath(base),
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dirname: fileURLToPath(base),
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resolve: (p: string) => new URL(`./${p}`, base).toString(),
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},
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symlink: (target: string): SymlinkMarker => ({ [SYMLINK]: true, target }),
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};
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const ctx: FileContext = {
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importMeta: {
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url: base.toString(),
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filename: fileURLToPath(base),
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dirname: fileURLToPath(base),
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resolve: (p: string) => new URL(`./${p}`, base).toString(),
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},
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symlink: (target: string): SymlinkMarker => ({ [SYMLINK]: true, target }),
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};
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async function writeTree(tree: FileTree, dir: URL): Promise<void> {
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for (const [name, raw] of Object.entries(tree)) {
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const url = new URL(name, dir);
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async function writeTree(tree: FileTree, dir: URL): Promise<void> {
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for (const [name, raw] of Object.entries(tree)) {
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const url = new URL(name, dir);
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// Nested directory object (not a plain value)
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if (
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typeof raw !== "function" &&
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!Buffer.isBuffer(raw) &&
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!Array.isArray(raw) &&
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isFileTree(raw) &&
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!name.includes(".")
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) {
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await inner.createDirectory(url);
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// Trailing slash so nested entries resolve relative to the dir
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await writeTree(raw, new URL(`${url}/`));
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continue;
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}
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// Nested directory object (not a plain value)
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if (
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typeof raw !== "function" &&
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!Buffer.isBuffer(raw) &&
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!Array.isArray(raw) &&
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isFileTree(raw) &&
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!name.includes(".")
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) {
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await inner.createDirectory(url);
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// Trailing slash so nested entries resolve relative to the dir
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await writeTree(raw, new URL(`${url}/`));
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continue;
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}
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// Ensure parent directory exists
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const parent = new URL("./", url);
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await inner.createDirectory(parent);
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// Ensure parent directory exists
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const parent = new URL("./", url);
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await inner.createDirectory(parent);
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// Resolve functions
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const content = typeof raw === "function" ? raw(ctx) : raw;
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// Resolve functions
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const content = typeof raw === "function" ? raw(ctx) : raw;
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// Symlink
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if (isSymlinkMarker(content)) {
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await fsSymlink(content.target, url);
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continue;
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}
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// Symlink
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if (isSymlinkMarker(content)) {
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await fsSymlink(content.target, url);
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continue;
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}
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// Buffer
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if (Buffer.isBuffer(content)) {
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await inner.write(url, content);
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continue;
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}
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// Buffer
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if (Buffer.isBuffer(content)) {
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await inner.write(url, content);
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continue;
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}
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// JSON auto-serialization for .json files with non-string content
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if (name.endsWith(".json") && typeof content !== "string") {
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await inner.write(url, JSON.stringify(content, null, 2));
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continue;
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}
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// JSON auto-serialization for .json files with non-string content
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if (name.endsWith(".json") && typeof content !== "string") {
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await inner.write(url, JSON.stringify(content, null, 2));
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continue;
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}
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// String content
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await inner.write(url, content as string);
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}
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}
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// String content
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await inner.write(url, content as string);
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}
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}
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await writeTree(files, base);
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await writeTree(files, base);
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const cleanup = () => inner.deleteAll(path).then(() => undefined);
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onTestFinished(cleanup);
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const cleanup = () => inner.deleteAll(path).then(() => undefined);
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onTestFinished(cleanup);
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return {
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root: pathToFileURL(path),
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resolve,
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cleanup,
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...scoped,
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};
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return {
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root: base,
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resolve,
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cleanup,
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...scoped,
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};
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}