Add CLAUDE.md and the test harness
CLAUDE.md records the Nova constraints this extension is built around — established by reading Nova 14.1's bundle and probing its preview server, and expensive to re-derive: no previewer extension point, generated pages must live under the preview root, dot-directories are served, and no API reaches into a preview WebView. It also flags the one unverified assumption, that a tab showing Preview still appears in nova.workspace.textEditors, with its symptom and fix. Tests/ is the harness that built the extension, kept rather than left in a scratchpad: a stubbed Nova runtime backed by the real filesystem, node suites for generation and the four close paths, and a headless-browser render test that skips itself without a browser. It caught the ./ doubling in rebased links and checkbox state not surviving serialization. Co-Authored-By: Claude Opus 5 <[email protected]> Claude-Session: https://claude.ai/code/session_01TueXpMi7eAtgWPuMr4ii52
This commit is contained in:
Claude Opus 5
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.DS_Store
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.DS_Store
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Tests/.tmp/
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# CLAUDE.md
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Context for working on this repository.
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## What this is
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A Nova extension that previews Markdown as rendered HTML, with Mermaid diagrams
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drawn inline. Nova previews Markdown already; the thing it cannot do is run
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JavaScript in that preview, which is what diagrams need.
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**The extension is not a previewer and cannot be one.** It writes an ordinary
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HTML file inside the workspace and opens it, and Nova's own HTML preview — a
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WebView that does run JavaScript — renders it. Every awkward part of the design
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follows from that one fact.
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## Hard constraints (do not re-derive these)
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These were established by reading Nova 14.1's bundle and probing its running
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preview server. They are facts about Nova, not preferences.
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| Constraint | Consequence |
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| --- | --- |
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| **No preview/previewer extension point.** Manifest keys are `activationEvents`, `clips`, `commands`, `completions`, `entitlements`, `main`, `sidebars`, `syntaxes`; categories are `clips`, `commands`, `completions`, `issues`, `languages`, `sidebars`, `tasks`, `themes` | Cannot supply the contents of a preview tab. Generate a file and open it |
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| No webview / HTML UI for extensions; sidebars are **TreeView only** | Rendering can only happen inside Nova's own preview WebView |
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| `AssistantsRegistry` covers completions, issues, symbols, colors, tasks only | No hook to intercept how a file is displayed |
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| Nova's preview server only serves files **under the preview root** | Generated pages must live inside the workspace. A page outside it fails as a blank tab, not an error |
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| The preview server **does** serve dot-directories (`.git/HEAD` returns 200) | `.nova/MermaidPreview/` is a valid home for generated files |
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| The preview server renders `.md` to HTML on the fly, with Nova's own stylesheet | A relative link from a generated page to another `.md` file shows Nova's rendering, not raw text |
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| Nova's built-in Markdown preview is `NovaPreviewMarkdownRenderer` over discount, styled by `MarkdownAuto/Bright/Dark.css` with a custom-stylesheet preference | A stylesheet cannot run Mermaid. That preference is not a route to this feature |
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| No API to reach into a preview WebView | No scroll sync, ever. Do not promise it |
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| No API to close a tab, or to ask whether a tab is showing preview | Cleanup infers a close from `onDidDestroy` plus a re-check |
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| `nova.workspace.openFile` options are `line` and `column` only | Cannot open a file directly into its preview state |
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The runtime is JavaScriptCore, **not Node**: no npm `require`, only relative
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`require("./x.js")` between `Scripts/` files. `setTimeout`/`clearTimeout` and
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`fetch` exist. Vendored libraries are not required by the extension — they are
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copied into the workspace and loaded by the page.
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Type definitions worth having open: `npm pack @types/nova-editor-node` (a single
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`index.d.ts`, more precise than the website).
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## How a preview happens
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1. `mermaidpreview.preview` resolves the frontmost editor to a source
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(`describeSource`), refusing untitled and remote files — they have no path to
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resolve images and links against.
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2. `installAssets` copies `Assets/` into `<output>/assets/` if missing or stale,
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stamped with `ASSET_VERSION`. **Bump `ASSET_VERSION` in `Scripts/preview.js`
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whenever anything in `Assets/` changes**, or installed copies go stale.
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3. `buildDocument` writes a ~2 KB shell: the Markdown embedded as JSON, plus
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script tags. No rendering happens in the extension.
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4. `Assets/preview.js` renders in the WebView — markdown-it, then DOM fix-ups,
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then Mermaid one diagram at a time so a bad diagram fails alone.
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5. Saving rewrites step 3 only. Nova reloads the preview because the file
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changed. Three megabytes are not rewritten per keystroke — keep it that way.
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6. Closing either tab discards the page; the last one out removes `assets/` and
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the directory.
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## Layout
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```
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extension.json manifest: commands, config, entitlements
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Scripts/ runs in Nova (JavaScriptCore)
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main.js Controller: lifecycle, commands, watchers, cleanup
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preview.js output paths, asset install, generate/discard
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render.js builds the HTML shell — no Nova APIs, so node can test it
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util.js conf, mkdirp, writeFile, copyFile, removeTree, shortHash
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Assets/ copied into the workspace, runs in the WebView
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preview.js markdown-it wiring, DOM fix-ups, Mermaid
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preview.css three themes, resolved in CSS so the page never flashes
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vendor/ markdown-it 14.3.0, mermaid 11.17.0 (both UMD, MIT)
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Tests/ node harness + headless-browser render test
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install.sh copy into Nova's extension directory, register, restart
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```
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Two files are called `preview.js`. `Scripts/preview.js` decides *where files go*;
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`Assets/preview.js` *renders the page*. They never see each other.
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## Conventions
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- 4-space indent, CommonJS, no build step, no runtime dependencies.
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- Comments explain *why*, especially where something encodes an API limitation.
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Several exist to stop a future reader "simplifying" a constraint back into a
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bug — the cleanup grace period is the sharpest example.
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- User-visible strings are sentence case and plain English.
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- Config keys are namespaced `mermaidpreview.*` and read through `util.conf()`,
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which prefers the workspace value.
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- Vendored libraries are committed, never fetched at runtime. The extension makes
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no network requests and holds no network entitlement.
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## Testing
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`Tests/run.sh` runs everything: syntax, manifest, and three suites.
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- **`generate.test.js`** — `Scripts/*.js` against a stubbed `nova` global backed
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by the real filesystem (`Tests/nova-stub.js`). Covers generation, asset reuse,
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and discard/pruning.
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- **`close.test.js`** — drives the whole `Controller` through the stub, including
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command invocation and fake editors that can be destroyed. Covers all four
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close paths.
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- **`render.test.js`** — builds a page through the real `render.js` and dumps the
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DOM from headless Chromium, asserting on diagrams, rebased paths, task lists,
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headings and both themes. Skips itself if no browser is found; set
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`MERMAID_PREVIEW_CHROME` to point at one.
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The stub is the highest-value tool here and it already caught real bugs
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(`./` doubling in rebased links, checkbox state not surviving serialization).
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Extend it rather than testing by hand.
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In Nova itself:
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```sh
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nova extension validate . # manifest + bundle (makes network calls)
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nova extension activate . # load into Nova for development
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```
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Logs appear in Nova's Extension Console.
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## State
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- Never published. `min_runtime` is `10`; developed against Nova 14.1.
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- **Unverified assumption, worth settling first.** Cleanup on tab-close assumes a
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tab showing Preview still appears in `nova.workspace.textEditors`. If it does
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not, flipping a page into Preview will delete it ~2.5 s later
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(`CLEANUP_GRACE_MS` in `Scripts/main.js`). Symptom: the preview stops updating
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and goes blank after a save. Fix is small — gate the page-tab cleanup on the
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source file being closed too, leaving only the source-close and quit paths.
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Recovery for the user is pressing ⌃⇧M again.
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- No icon. `Images/extension/` is empty; `extension.png` at the root is what Nova
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picks up (see the sibling `claude-nova` extension).
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- No commits yet.
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## Things deliberately not done
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- **Syntax highlighting** in code blocks — another bundle to vendor, and the
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page is already 3.5 MB. Add highlight.js to `Assets/vendor/` and a `highlight`
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option in the markdown-it constructor if it becomes worth it.
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- **Scroll sync** — impossible, see the constraints table.
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- **Replacing Nova's built-in `.md` preview** — also impossible. This is a second
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tab, and the README says so plainly.
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- **Inlining assets into a single self-contained page** — would make every save
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a 3.5 MB write.
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const fs = require("fs");
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const path = require("path");
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const stub = require("./nova-stub.js");
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const EXT = path.join(__dirname, "..");
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const ROOT = path.join(__dirname, ".tmp", "close");
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const OUT = path.join(ROOT, ".nova", "MermaidPreview");
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fs.rmSync(ROOT, { recursive: true, force: true });
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fs.mkdirSync(path.join(ROOT, "docs"), { recursive: true });
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const MD = path.join(ROOT, "docs", "note.md");
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fs.writeFileSync(MD, "# Note\n\n```mermaid\ngraph TD\nA-->B\n```\n");
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const nova = stub.build({ root: ROOT, extensionPath: EXT });
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global.nova = nova;
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global.Disposable = stub.Disposable;
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global.CompositeDisposable = stub.CompositeDisposable;
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global.Range = stub.Range;
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require(path.join(EXT, "Scripts", "main.js")).activate();
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const results = [];
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const check = (name, ok) => results.push([ok ? "PASS" : "FAIL", name]);
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const sleep = (ms) => new Promise((r) => setTimeout(r, ms));
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const pages = () => (fs.existsSync(OUT) ? fs.readdirSync(OUT).filter((f) => f.endsWith(".html")) : []);
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function openSource() {
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const editor = new stub.FakeEditor(MD, fs.readFileSync(MD, "utf8"));
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nova.workspace.textEditors.push(editor);
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nova.workspace.activeTextEditor = editor;
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return editor;
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}
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function pageEditor() {
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return nova.workspace.textEditors.find((e) => e.document.path.endsWith(".html"));
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}
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(async () => {
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// -- 1. closing the generated page removes it ------------------------
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let source = openSource();
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await nova.__invoke("mermaidpreview.preview");
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check("preview opens a page", pages().length === 1);
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const page = pageEditor();
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nova.__close(page);
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check("page survives the grace period", pages().length === 1);
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await sleep(3000);
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check("closing the page tab deletes it", pages().length === 0);
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check("last page out removes the directory", !fs.existsSync(OUT));
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// -- 2. a tab flipping to preview must not count as a close ----------
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nova.workspace.textEditors = [];
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source = openSource();
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await nova.__invoke("mermaidpreview.preview");
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const flipping = pageEditor();
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flipping.fireDestroy(); // destroyed, but the tab is still open
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await sleep(3000);
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check("a rebuilt editor is not mistaken for a close", pages().length === 1);
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// -- 3. closing the Markdown file cleans up too ----------------------
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nova.__close(source);
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check("closing the source deletes the page immediately", pages().length === 0);
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check("directory removed with it", !fs.existsSync(OUT));
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// -- 4. cleanup can be turned off ------------------------------------
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nova.workspace.textEditors = [];
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nova.config.set("mermaidpreview.cleanUpOnClose", false);
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source = openSource();
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await nova.__invoke("mermaidpreview.preview");
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const kept = pageEditor();
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nova.__close(kept);
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nova.__close(source);
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await sleep(3000);
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check("nothing is deleted when the setting is off", pages().length === 1);
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for (const [status, name] of results) console.log(`${status} ${name}`);
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process.exitCode = results.some(([s]) => s === "FAIL") ? 1 : 0;
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})();
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Vendored
+45
@@ -0,0 +1,45 @@
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---
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title: Front matter should be hidden
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---
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# Sample Document
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Intro paragraph with a [relative link](./other.md), `inline code`, **bold** and a
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[TOC link](#a-second-heading).
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- [ ] an unchecked task
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- [x] a checked task
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- a plain item
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| Column | Another |
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| --- | --- |
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| one | two |
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| three | four |
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```js
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const answer = 42;
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```
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```mermaid
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graph TD
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A[Start] --> B{Works?}
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B -->|yes| C[Ship it]
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B -->|no| D[Fix it]
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D --> A
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```
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## A Second Heading
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||||||
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|
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```mermaid
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sequenceDiagram
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Nova->>Extension: Preview Markdown
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Extension->>Disk: write preview.html
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Disk-->>Nova: file changed
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Nova->>Preview: reload
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```
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||||||
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```mermaid
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this is not valid mermaid at all {{{
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```
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@@ -0,0 +1,61 @@
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const fs = require("fs");
|
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const path = require("path");
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const stub = require("./nova-stub.js");
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|
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const EXT = path.join(__dirname, "..");
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const ROOT = path.join(__dirname, ".tmp", "generate");
|
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|
||||||
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fs.rmSync(ROOT, { recursive: true, force: true });
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fs.mkdirSync(path.join(ROOT, "docs"), { recursive: true });
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fs.writeFileSync(path.join(ROOT, "docs", "one.md"), "# One\n\n```mermaid\ngraph TD\nA-->B\n```\n");
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||||||
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fs.writeFileSync(path.join(ROOT, "docs", "two.md"), "# Two\n");
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||||||
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||||||
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const nova = stub.build({ root: ROOT, extensionPath: EXT });
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global.nova = nova;
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||||||
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global.Disposable = stub.Disposable;
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global.CompositeDisposable = stub.CompositeDisposable;
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global.Range = stub.Range;
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||||||
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|
||||||
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const preview = require(path.join(EXT, "Scripts", "preview.js"));
|
||||||
|
|
||||||
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const OUT = path.join(ROOT, ".nova", "MermaidPreview");
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||||||
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const results = [];
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||||||
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function check(name, condition) {
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|
results.push([condition ? "PASS" : "FAIL", name]);
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||||||
|
}
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||||||
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|
||||||
|
// -- generate ------------------------------------------------------------
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||||||
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const one = { path: path.join(ROOT, "docs", "one.md"), mode: "markdown",
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editor: new stub.FakeEditor(path.join(ROOT, "docs", "one.md"), fs.readFileSync(path.join(ROOT, "docs", "one.md"), "utf8")) };
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||||||
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const two = { path: path.join(ROOT, "docs", "two.md"), mode: "markdown",
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||||||
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editor: new stub.FakeEditor(path.join(ROOT, "docs", "two.md"), fs.readFileSync(path.join(ROOT, "docs", "two.md"), "utf8")) };
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||||||
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|
||||||
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const pathOne = preview.generate(one);
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||||||
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check("generate writes a page", fs.existsSync(pathOne));
|
||||||
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check("assets installed", fs.existsSync(path.join(OUT, "assets", "vendor", "mermaid.min.js")));
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||||||
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check("stylesheet installed", fs.existsSync(path.join(OUT, "assets", "preview.css")));
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||||||
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check("page references relative assets", fs.readFileSync(pathOne, "utf8").includes('src="assets/vendor/mermaid.min.js"'));
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||||||
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check("page embeds the markdown", fs.readFileSync(pathOne, "utf8").includes("graph TD"));
|
||||||
|
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||||||
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const mtime = fs.statSync(path.join(OUT, "assets", "preview.css")).mtimeMs;
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||||||
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const pathTwo = preview.generate(two);
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||||||
|
check("second page has its own filename", pathOne !== pathTwo && fs.existsSync(pathTwo));
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||||||
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check("assets not reinstalled when current", fs.statSync(path.join(OUT, "assets", "preview.css")).mtimeMs === mtime);
|
||||||
|
|
||||||
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// -- discard -------------------------------------------------------------
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||||||
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preview.discard(pathOne);
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||||||
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check("discard removes that page", !fs.existsSync(pathOne));
|
||||||
|
check("discard keeps the other page", fs.existsSync(pathTwo));
|
||||||
|
check("discard keeps assets while a page remains", fs.existsSync(path.join(OUT, "assets", "preview.css")));
|
||||||
|
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||||||
|
preview.discard(pathTwo);
|
||||||
|
check("last discard removes the directory", !fs.existsSync(OUT));
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||||||
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check("workspace otherwise untouched", fs.existsSync(path.join(ROOT, "docs", "one.md")));
|
||||||
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||||||
|
// -- discard is safe to repeat -------------------------------------------
|
||||||
|
let threw = false;
|
||||||
|
try { preview.discard(pathTwo); } catch (e) { threw = true; }
|
||||||
|
check("discarding twice does not throw", !threw);
|
||||||
|
|
||||||
|
for (const [status, name] of results) console.log(`${status} ${name}`);
|
||||||
|
process.exitCode = results.some(([s]) => s === "FAIL") ? 1 : 0;
|
||||||
@@ -0,0 +1,107 @@
|
|||||||
|
// A minimal stand-in for Nova's extension runtime, backed by the real fs, so the
|
||||||
|
// extension's own Scripts/*.js can be exercised outside Nova.
|
||||||
|
const fs = require("fs");
|
||||||
|
const nodePath = require("path");
|
||||||
|
|
||||||
|
class Disposable {
|
||||||
|
constructor(fn) { this.fn = fn; this.disposed = false; }
|
||||||
|
dispose() { if (!this.disposed) { this.disposed = true; if (this.fn) this.fn(); } }
|
||||||
|
}
|
||||||
|
class CompositeDisposable {
|
||||||
|
constructor() { this.items = []; }
|
||||||
|
add(d) { this.items.push(d); }
|
||||||
|
dispose() { for (const d of this.items) d.dispose(); this.items = []; }
|
||||||
|
}
|
||||||
|
class Range {
|
||||||
|
constructor(start, end) { this.start = start; this.end = end; }
|
||||||
|
}
|
||||||
|
|
||||||
|
class FakeEditor {
|
||||||
|
constructor(path, text) {
|
||||||
|
this.document = {
|
||||||
|
path, uri: `file://${path}`, isUntitled: false, isRemote: false,
|
||||||
|
syntax: path.endsWith(".md") ? "markdown" : "html",
|
||||||
|
length: text.length,
|
||||||
|
getTextInRange: () => text,
|
||||||
|
};
|
||||||
|
this.handlers = { save: [], stop: [], destroy: [] };
|
||||||
|
}
|
||||||
|
onDidSave(cb) { this.handlers.save.push(cb); return new Disposable(); }
|
||||||
|
onDidStopChanging(cb) { this.handlers.stop.push(cb); return new Disposable(); }
|
||||||
|
onDidDestroy(cb) { this.handlers.destroy.push(cb); return new Disposable(); }
|
||||||
|
fireDestroy() { for (const cb of this.handlers.destroy.slice()) cb(this); }
|
||||||
|
}
|
||||||
|
|
||||||
|
function build({ root, extensionPath }) {
|
||||||
|
const config = new Map();
|
||||||
|
const commands = new Map();
|
||||||
|
const configApi = {
|
||||||
|
get: (k) => (config.has(k) ? config.get(k) : null),
|
||||||
|
set: (k, v) => config.set(k, v),
|
||||||
|
onDidChange: () => new Disposable(),
|
||||||
|
};
|
||||||
|
|
||||||
|
const nova = {
|
||||||
|
extension: { path: extensionPath },
|
||||||
|
config: configApi,
|
||||||
|
commands: {
|
||||||
|
register: (name, cb) => { commands.set(name, cb); return new Disposable(() => commands.delete(name)); },
|
||||||
|
},
|
||||||
|
path: {
|
||||||
|
join: (...a) => nodePath.join(...a),
|
||||||
|
dirname: (p) => nodePath.dirname(p),
|
||||||
|
basename: (p) => nodePath.basename(p),
|
||||||
|
extname: (p) => nodePath.extname(p),
|
||||||
|
isAbsolute: (p) => nodePath.isAbsolute(p),
|
||||||
|
relative: (a, b) => nodePath.relative(a, b),
|
||||||
|
splitext: (p) => { const e = nodePath.extname(p); return [p.slice(0, p.length - e.length), e]; },
|
||||||
|
},
|
||||||
|
fs: {
|
||||||
|
F_OK: fs.constants.F_OK,
|
||||||
|
access: (p) => fs.existsSync(p),
|
||||||
|
mkdir: (p) => fs.mkdirSync(p),
|
||||||
|
copy: (a, b) => fs.copyFileSync(a, b),
|
||||||
|
remove: (p) => fs.unlinkSync(p),
|
||||||
|
rmdir: (p) => fs.rmdirSync(p),
|
||||||
|
listdir: (p) => fs.readdirSync(p),
|
||||||
|
stat: (p) => { const st = fs.statSync(p); return { isDirectory: () => st.isDirectory() }; },
|
||||||
|
open: (p, mode) => {
|
||||||
|
if (mode === "w") {
|
||||||
|
const chunks = [];
|
||||||
|
return { write: (s) => chunks.push(s), close: () => fs.writeFileSync(p, chunks.join("")) };
|
||||||
|
}
|
||||||
|
const text = fs.readFileSync(p, "utf8");
|
||||||
|
return { read: () => text, close: () => {} };
|
||||||
|
},
|
||||||
|
},
|
||||||
|
workspace: {
|
||||||
|
path: root,
|
||||||
|
previewRootPath: root,
|
||||||
|
config: { get: () => null, set: () => {} },
|
||||||
|
textEditors: [],
|
||||||
|
activeTextEditor: null,
|
||||||
|
openFile: async (p) => {
|
||||||
|
let editor = nova.workspace.textEditors.find((e) => e.document.path === p);
|
||||||
|
if (!editor) {
|
||||||
|
editor = new FakeEditor(p, require('fs').readFileSync(p, 'utf8'));
|
||||||
|
nova.workspace.textEditors.push(editor);
|
||||||
|
}
|
||||||
|
return editor;
|
||||||
|
},
|
||||||
|
showInformativeMessage: (m) => messages.push(["info", m]),
|
||||||
|
showErrorMessage: (m) => messages.push(["error", m]),
|
||||||
|
showActionPanel: (m, o, cb) => cb(0),
|
||||||
|
},
|
||||||
|
};
|
||||||
|
|
||||||
|
const messages = [];
|
||||||
|
nova.__messages = messages;
|
||||||
|
nova.__invoke = (name, ...args) => commands.get(name)(...args);
|
||||||
|
nova.__close = (editor) => {
|
||||||
|
nova.workspace.textEditors = nova.workspace.textEditors.filter((e) => e !== editor);
|
||||||
|
editor.fireDestroy();
|
||||||
|
};
|
||||||
|
return nova;
|
||||||
|
}
|
||||||
|
|
||||||
|
module.exports = { build, FakeEditor, Disposable, CompositeDisposable, Range };
|
||||||
@@ -0,0 +1,96 @@
|
|||||||
|
// Renders a fixture through the real render.js in a headless browser, because
|
||||||
|
// everything the page does — Markdown, Mermaid, the DOM fix-ups — only happens
|
||||||
|
// where there is a DOM. Skips itself when no browser can be found.
|
||||||
|
const fs = require("fs");
|
||||||
|
const path = require("path");
|
||||||
|
const os = require("os");
|
||||||
|
const { execFileSync } = require("child_process");
|
||||||
|
|
||||||
|
const EXT = path.join(__dirname, "..");
|
||||||
|
const { buildDocument } = require(path.join(EXT, "Scripts", "render.js"));
|
||||||
|
|
||||||
|
function findBrowser() {
|
||||||
|
if (process.env.MERMAID_PREVIEW_CHROME) return process.env.MERMAID_PREVIEW_CHROME;
|
||||||
|
|
||||||
|
const cache = path.join(os.homedir(), "Library", "Caches", "ms-playwright");
|
||||||
|
if (fs.existsSync(cache)) {
|
||||||
|
for (const entry of fs.readdirSync(cache)) {
|
||||||
|
const candidate = path.join(cache, entry, "chrome-headless-shell-mac-arm64", "chrome-headless-shell");
|
||||||
|
if (fs.existsSync(candidate)) return candidate;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
const chrome = "/Applications/Google Chrome.app/Contents/MacOS/Google Chrome";
|
||||||
|
return fs.existsSync(chrome) ? chrome : null;
|
||||||
|
}
|
||||||
|
|
||||||
|
const browser = findBrowser();
|
||||||
|
if (!browser) {
|
||||||
|
console.log("SKIP no headless browser found (set MERMAID_PREVIEW_CHROME to one)");
|
||||||
|
process.exit(0);
|
||||||
|
}
|
||||||
|
|
||||||
|
const work = path.join(__dirname, ".tmp", "render");
|
||||||
|
fs.rmSync(work, { recursive: true, force: true });
|
||||||
|
fs.mkdirSync(path.join(work, "out", "assets", "vendor"), { recursive: true });
|
||||||
|
fs.mkdirSync(path.join(work, "docs"), { recursive: true });
|
||||||
|
|
||||||
|
for (const name of ["preview.css", "preview.js"]) {
|
||||||
|
fs.copyFileSync(path.join(EXT, "Assets", name), path.join(work, "out", "assets", name));
|
||||||
|
}
|
||||||
|
for (const name of ["markdown-it.min.js", "mermaid.min.js"]) {
|
||||||
|
fs.copyFileSync(path.join(EXT, "Assets", "vendor", name), path.join(work, "out", "assets", "vendor", name));
|
||||||
|
}
|
||||||
|
|
||||||
|
const markdown = fs.readFileSync(path.join(__dirname, "fixtures", "sample.md"), "utf8");
|
||||||
|
fs.writeFileSync(path.join(work, "docs", "sample.md"), markdown);
|
||||||
|
|
||||||
|
const results = [];
|
||||||
|
const check = (name, ok) => results.push([ok ? "PASS" : "FAIL", name]);
|
||||||
|
|
||||||
|
function render(theme) {
|
||||||
|
const page = path.join(work, "out", `sample-${theme}.html`);
|
||||||
|
fs.writeFileSync(
|
||||||
|
page,
|
||||||
|
buildDocument({
|
||||||
|
markdown,
|
||||||
|
title: "sample.md",
|
||||||
|
sourcePath: path.join(work, "docs", "sample.md"),
|
||||||
|
sourceRelDir: "../docs/",
|
||||||
|
assetsRelDir: "assets",
|
||||||
|
mode: "markdown",
|
||||||
|
theme,
|
||||||
|
contentWidth: 860,
|
||||||
|
})
|
||||||
|
);
|
||||||
|
return execFileSync(
|
||||||
|
browser,
|
||||||
|
["--headless", "--disable-gpu", "--no-sandbox", "--virtual-time-budget=10000", "--dump-dom", `file://${page}`],
|
||||||
|
{ encoding: "utf8", stdio: ["ignore", "pipe", "ignore"], maxBuffer: 32 * 1024 * 1024 }
|
||||||
|
);
|
||||||
|
}
|
||||||
|
|
||||||
|
const dom = render("auto");
|
||||||
|
|
||||||
|
// Only the rendered <main>. The Markdown source is embedded further down the
|
||||||
|
// page as data, so a naive slice to end-of-document would find anything.
|
||||||
|
const body = dom.slice(dom.indexOf('id="content"'), dom.indexOf('id="preview-data"'));
|
||||||
|
|
||||||
|
check("both valid diagrams drawn", (dom.match(/<svg/g) || []).length === 2);
|
||||||
|
check("the broken diagram reports in place", dom.includes("mermaid-error-message") && dom.includes("is-error"));
|
||||||
|
check("front matter is not rendered", !body.includes("Front matter should be hidden"));
|
||||||
|
check("headings get ids", dom.includes('<h2 id="a-second-heading"'));
|
||||||
|
check("in-document anchors are left alone", dom.includes('href="#a-second-heading"'));
|
||||||
|
check("relative links are rebased once", dom.includes('href="../docs/other.md"') && !dom.includes("docs/./"));
|
||||||
|
check("relative images are rebased", dom.includes('src="../docs/img/logo.png"'));
|
||||||
|
check("task list becomes checkboxes", (dom.match(/<input type="checkbox"/g) || []).length === 2);
|
||||||
|
check("checked state survives", dom.includes('checked=""'));
|
||||||
|
check("wide tables scroll on their own", dom.includes('class="table-scroll"'));
|
||||||
|
check("content is revealed", !body.includes('aria-busy="true"'));
|
||||||
|
|
||||||
|
const dark = render("dark");
|
||||||
|
check("dark theme reaches the page", dark.includes('data-theme="dark"'));
|
||||||
|
check("dark theme still draws diagrams", (dark.match(/<svg/g) || []).length === 2);
|
||||||
|
|
||||||
|
for (const [status, name] of results) console.log(`${status} ${name}`);
|
||||||
|
process.exitCode = results.some(([s]) => s === "FAIL") ? 1 : 0;
|
||||||
Executable
+15
@@ -0,0 +1,15 @@
|
|||||||
|
#!/bin/sh
|
||||||
|
# Runs every test. No dependencies beyond node; render.test.js additionally
|
||||||
|
# wants a headless browser and skips itself without one.
|
||||||
|
set -eu
|
||||||
|
cd "$(dirname "$0")"
|
||||||
|
|
||||||
|
echo "— syntax —"
|
||||||
|
for f in ../Scripts/*.js ../Assets/preview.js ./*.js; do node --check "$f"; done
|
||||||
|
python3 -c "import json; json.load(open('../extension.json'))"
|
||||||
|
echo "ok"
|
||||||
|
|
||||||
|
for test in generate close render; do
|
||||||
|
echo "— $test —"
|
||||||
|
node "$test.test.js"
|
||||||
|
done
|
||||||
Reference in New Issue
Block a user