feat(linkedin): generalize build-linkedin to read edition-config.json (S2)

plugins/linkedin-thought-leadership/render/__tests__/build-linkedin.test.mjs

@@ -0,0 +1,83 @@
+// build-linkedin.test.mjs — S2: edition-config.json generalization.
+// Verifies the fasit assumption (5): changing values in the config changes
+// POST.html output with NO code change. Regression: a config matching the old
+// hardcoded Seres values reproduces the baseline strings.
+import { describe, it } from "node:test";
+import assert from "node:assert/strict";
+import { join, dirname } from "node:path";
+import { fileURLToPath } from "node:url";
+import { loadEditionConfig, editionPost, samlePost } from "../build-linkedin.mjs";
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+const fixturesDir = join(__dirname, "fixtures");
+
+const meta = {
+  title: "Testtittel",
+  subtitle: "Undertittel",
+  lesetid: "5 min",
+  serie: "Test",
+};
+const body = "## Overskrift\n\nEn paragraf med tekst.";
+const share = { share: "Delingstekst", hashtags: "#test", kommentar: "Kommentar" };
+
+describe("build-linkedin edition-config", () => {
+  it("loadEditionConfig reads the Seres regression fixture", () => {
+    const cfg = loadEditionConfig(fixturesDir);
+    assert.equal(cfg.calendar["01"].dag, "Tirsdag 26.05.2026");
+    assert.equal(
+      cfg.coverCredit,
+      "Illustrasjon generert med Google Gemini (Nano Banana Pro)"
+    );
+    assert.ok(cfg.captions["06"].startsWith("Tolv grep"));
+  });
+
+  it("regression: Seres config reproduces baseline strings in POST.html", () => {
+    const cfg = loadEditionConfig(fixturesDir);
+    const html = editionPost("01", meta, body, share, cfg);
+    assert.ok(html.includes("Tirsdag 26.05.2026"), "calendar date present");
+    assert.ok(html.includes("Noen lover vekst"), "caption 01 present");
+    assert.ok(
+      html.includes("Illustrasjon generert med Google Gemini"),
+      "cover credit present"
+    );
+    assert.ok(html.includes("OpenAI-verdsettelse"), "freshness 01 present");
+  });
+
+  it("changing config values changes POST.html output (no code change)", () => {
+    const cfg = loadEditionConfig(fixturesDir);
+    const html1 = editionPost("01", meta, body, share, cfg);
+
+    const cfg2 = JSON.parse(JSON.stringify(cfg));
+    cfg2.captions["01"] = "EN HELT ANNEN CAPTION";
+    cfg2.calendar["01"].dag = "Mandag 01.01.2030";
+    const html2 = editionPost("01", meta, body, share, cfg2);
+
+    assert.notEqual(html1, html2, "different config → different output");
+    assert.ok(html2.includes("EN HELT ANNEN CAPTION"), "new caption present");
+    assert.ok(html2.includes("Mandag 01.01.2030"), "new date present");
+    assert.ok(!html2.includes("Noen lover vekst"), "old caption gone");
+  });
+
+  it("missing config degrades gracefully to empty defaults", () => {
+    const cfg = loadEditionConfig(join(fixturesDir, "does-not-exist"));
+    assert.deepEqual(cfg, {
+      calendar: {},
+      freshness: {},
+      coverCredit: "",
+      captions: {},
+    });
+    // editionPost still renders without throwing (uses "—" fallbacks)
+    const html = editionPost("01", meta, body, share, cfg);
+    assert.ok(html.includes("Del 01"), "edition heading still rendered");
+  });
+
+  it("samlePost renders with config calendar and degrades gracefully", () => {
+    const cfg = loadEditionConfig(fixturesDir);
+    const html = samlePost(share, cfg);
+    assert.ok(html.includes("Mandag 01.06.2026"), "samle calendar from config");
+
+    const empty = loadEditionConfig(join(fixturesDir, "nope"));
+    const htmlEmpty = samlePost(share, empty);
+    assert.ok(htmlEmpty.includes("Samle-post"), "renders without throwing");
+  });
+});