feat(M4): Reusable code abstractions and dead-code removal

skills/atlassian/shared/scripts/tests/command-helpers.test.ts

@@ -0,0 +1,43 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+
+import { dryRunResponse, resolveFormat } from "../src/command-helpers.js";
+
+// ── dryRunResponse ────────────────────────────────────────────────────────
+
+test("dryRunResponse wraps data with ok:true and dryRun:true", () => {
+  const data = { method: "POST", url: "https://example.com/api/v2/pages" };
+  const result = dryRunResponse(data);
+  assert.equal(result.ok, true);
+  assert.equal(result.dryRun, true);
+  assert.deepEqual(result.data, data);
+});
+
+test("dryRunResponse preserves the exact data reference", () => {
+  const data = { nested: { key: "value" } };
+  const result = dryRunResponse(data);
+  assert.strictEqual(result.data, data);
+});
+
+test("dryRunResponse works with primitive data", () => {
+  const result = dryRunResponse("dry-run-string");
+  assert.equal(result.ok, true);
+  assert.equal(result.dryRun, true);
+  assert.equal(result.data, "dry-run-string");
+});
+
+// ── resolveFormat ─────────────────────────────────────────────────────────
+
+test("resolveFormat returns json by default for undefined", () => {
+  assert.equal(resolveFormat(undefined), "json");
+});
+
+test("resolveFormat returns json for unrecognised values", () => {
+  assert.equal(resolveFormat("xml"), "json");
+  assert.equal(resolveFormat(""), "json");
+  assert.equal(resolveFormat("TEXT"), "json");
+});
+
+test("resolveFormat returns text only for the exact string 'text'", () => {
+  assert.equal(resolveFormat("text"), "text");
+});