diff --git a/packages/chess/src/modifiers/primitives/registry-count.test.ts b/packages/chess/src/modifiers/primitives/registry-count.test.ts
new file mode 100644
index 0000000..fbd19bb
--- /dev/null
+++ b/packages/chess/src/modifiers/primitives/registry-count.test.ts
@@ -0,0 +1,18 @@
+import { describe, it, expect } from "vitest";
+import { PRIMITIVE_REGISTRY } from "./index.js";
+
+describe("PRIMITIVE_REGISTRY", () => {
+  it("should have exactly 22 registered primitives after barrel import", () => {
+    const count = PRIMITIVE_REGISTRY.list().length;
+    expect(count).toBe(22);
+  });
+
+  it("should list all primitive kinds with non-empty descriptor objects", () => {
+    const primitives = PRIMITIVE_REGISTRY.list();
+    expect(primitives.length).toBeGreaterThan(0);
+    primitives.forEach((p) => {
+      expect(p).toHaveProperty("kind");
+      expect(p.kind).toBeTruthy();
+    });
+  });
+});