feat: dynamic ish terminal preview

2026-10-06 17:06:08 -05:00
parent 569152a7be
commit 98e46644c0
11 changed files with 220 additions and 21 deletions
@@ -0,0 +1,37 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+import {
+  extractTerminalPreview,
+  removeTerminalPreview
+} from "../src/_filters/index.js";
+
+test("Terminal previews: extracts rendered Markdown between the leading preview and article headings", () => {
+  const renderedPost = `
+    <h1 id="terminal-preview">Terminal preview</h1>
+    <p>Use the following command:</p>
+    <pre class="language-bash"><code class="language-bash">cat /dispatches/example | head -n 5</code></pre>
+    <h1 id="investigation">Investigation</h1>
+    <p>The public article starts here.</p>
+  `;
+
+  assert.equal(
+    extractTerminalPreview(renderedPost),
+    `\n    <p>Use the following command:</p>\n    <pre class="language-bash"><code class="language-bash">cat /dispatches/example | head -n 5</code></pre>\n    `
+  );
+  assert.equal(
+    removeTerminalPreview(renderedPost),
+    `\n    <h1 id="investigation">Investigation</h1>\n    <p>The public article starts here.</p>\n  `
+  );
+});
+
+test("Terminal previews: ignores missing, misplaced, and malformed preview headings", () => {
+  const regularPost = "<h1 id=\"article\">Article</h1><p>Visible text.</p>";
+  const misplacedPreview = "<h1 id=\"article\">Article</h1><h1 id=\"terminal-preview\">Terminal preview</h1><p>Do not extract.</p>";
+
+  assert.equal(extractTerminalPreview(regularPost), "");
+  assert.equal(removeTerminalPreview(regularPost), regularPost);
+  assert.equal(extractTerminalPreview(misplacedPreview), "");
+  assert.equal(removeTerminalPreview(misplacedPreview), misplacedPreview);
+  assert.equal(extractTerminalPreview(null), "");
+  assert.equal(removeTerminalPreview(null), "");
+});