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auto-print / files / test / config.test.ts

config.test.ts

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1import assert from "node:assert/strict";
2import fs from "node:fs";
3import os from "node:os";
4import path from "node:path";
5import { describe, it } from "node:test";
6import { loadConfig } from "../src/config.ts";
7
8function writeConfig(content: unknown): string {
9 const dir = fs.mkdtempSync(path.join(os.tmpdir(), "auto-print-test-"));
10 const file = path.join(dir, "books.json");
11 fs.writeFileSync(file, JSON.stringify(content));
12 return file;
13}
14
15describe("loadConfig", () => {
16 it("resolves paths against the config file's folder and fills in the defaults", () => {
17 const file = writeConfig({
18 outDir: "../out",
19 defaults: { author: "A. Writer" },
20 books: [{ slug: "one", title: "One", source: "../one.md", cover: "covers/one.jpg", front: ["Dedication"] }],
21 });
22 const dir = path.dirname(file);
23 const config = loadConfig(file);
24 assert.equal(config.outDir, path.resolve(dir, "../out"));
25 assert.deepEqual(config.books[0], {
26 slug: "one",
27 title: "One",
28 source: path.resolve(dir, "../one.md"),
29 cover: path.join(dir, "covers/one.jpg"),
30 front: ["Dedication"],
31 back: [],
32 author: "A. Writer",
33 language: "en-US",
34 section: "Writing",
35 formats: ["epub", "docx", "pdf", "kpf"],
36 chapterBreaks: false,
37 });
38 });
39
40 it("puts the output next to the config file by default, and lets a book override the defaults", () => {
41 const file = writeConfig({
42 defaults: { author: "A. Writer", formats: ["epub"] },
43 books: [{ slug: "one", title: "One", source: "one.md", author: "B. Writer", section: null, chapterBreaks: true }],
44 });
45 const config = loadConfig(file);
46 assert.equal(config.outDir, path.join(path.dirname(file), "auto-print-out"));
47 assert.equal(config.books[0]?.author, "B. Writer");
48 assert.equal(config.books[0]?.section, null);
49 assert.equal(config.books[0]?.chapterBreaks, true);
50 assert.deepEqual(config.books[0]?.formats, ["epub"]);
51 });
52
53 it("explains what is wrong", () => {
54 const book = { slug: "one", title: "One", source: "one.md", author: "A" };
55 assert.throws(() => loadConfig("/no/such/books.json"), /Config file not found/);
56 assert.throws(() => loadConfig(writeConfig({ books: [{ ...book, author: undefined }] })), /needs an "author"/);
57 assert.throws(() => loadConfig(writeConfig({ books: [book, book] })), /slug "one" is used twice/);
58 assert.throws(() => loadConfig(writeConfig({ books: [{ ...book, source: ["a.md"] }] })), /needs "slug", "title" and "source"/);
59 assert.throws(() => loadConfig(writeConfig({ books: [{ ...book, formats: ["mobi"] }] })), /unknown format "mobi"/);
60 assert.throws(() => loadConfig(writeConfig({ books: [{ ...book, front: "Dedication" }] })), /"front" must be a list/);
61 });
62});