test(features): R50 — repo contract suites assert span shape per method

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

packages/auth/src/__contracts__/users-repository.contract.ts

@@ -1,4 +1,4 @@
-import { it, expect, beforeEach } from "vitest";
+import { it, expect, beforeEach, describe } from "vitest";
 import { defineContractSuite } from "@repo/core-testing/contract";
 import type { IUsersRepository } from "../application/repositories/users.repository.interface.js";
 import { userFactory } from "../__factories__/user.factory.js";
@@ -6,7 +6,7 @@ import { userFactory } from "../__factories__/user.factory.js";
 export const usersRepositoryContract =
   defineContractSuite<IUsersRepository>(
     "IUsersRepository",
-    ({ buildSubject }) => {
+    ({ buildSubject, getTracer }) => {
       let repo: IUsersRepository;
 
       beforeEach(async () => {
@@ -52,5 +52,40 @@ export const usersRepositoryContract =
         expect(created.id).toBe(seed.id);
         expect(created.username).toBe("carol");
       });
+
+      describe("span emission (R50)", () => {
+        it("getUser emits users.getUser span with id attribute", async () => {
+          if (!getTracer) return;
+          const tracer = getTracer();
+          tracer.reset();
+          await repo.getUser("nonexistent");
+          const span = tracer.findSpan("users.getUser");
+          expect(span).toBeDefined();
+          expect(span!.op).toBe("repository");
+          expect(span!.attributes.id).toBe("nonexistent");
+        });
+
+        it("getUserByUsername emits users.getUserByUsername span", async () => {
+          if (!getTracer) return;
+          const tracer = getTracer();
+          tracer.reset();
+          await repo.getUserByUsername("alice");
+          const span = tracer.findSpan("users.getUserByUsername");
+          expect(span).toBeDefined();
+          expect(span!.op).toBe("repository");
+        });
+
+        it("createUser emits users.createUser span with id attribute", async () => {
+          if (!getTracer) return;
+          const tracer = getTracer();
+          tracer.reset();
+          const seed = userFactory.build({ username: "span-test-user" });
+          await repo.createUser(seed);
+          const span = tracer.findSpan("users.createUser");
+          expect(span).toBeDefined();
+          expect(span!.op).toBe("repository");
+          expect(span!.attributes.id).toBe(seed.id);
+        });
+      });
     },
   );