test(users): add integration and e2e tests for /users (#111)

- integration: list, filter by role, create, get, update, delete, not-found
- e2e: handler calls with mock context + real DB, covers 400/409/404 cases
  (unit tests already present from teammates)

tests/integration/users_test.ts

@@ -1,24 +1,24 @@
+// #111 - Integration tests for /users endpoints
+
 import { assertEquals, assertExists } from "@std/assert";
 import {
-  closeTestPool,
   seedRoles,
   seedUsers,
   testDb,
   truncateAll,
 } from "../helpers/db_integration.ts";
 import { users } from "$root/databases/schema.ts";
+import { eq } from "npm:drizzle-orm@0.45.2";
 
 Deno.test({
-  name: "integration: GET /users - DB round trip",
+  name: "integration users: list all users",
   async fn() {
     await truncateAll();
-
     const [role] = await seedRoles([{ nom: "employee" }]);
     await seedUsers([
       { id: "dupont.jean", nom: "Dupont", prenom: "Jean", idRole: role.id },
       { id: "martin.alice", nom: "Martin", prenom: "Alice", idRole: role.id },
     ]);
-
     const rows = await testDb.select().from(users);
     assertEquals(rows.length, 2);
     assertExists(rows.find((u) => u.id === "dupont.jean"));
@@ -28,30 +28,95 @@ Deno.test({
 });
 
 Deno.test({
-  name: "integration: INSERT user and retrieve by id",
+  name: "integration users: filter by idRole",
   async fn() {
     await truncateAll();
-
-    const [role] = await seedRoles([{ nom: "admin" }]);
-    const [created] = await testDb.insert(users).values({
-      id: "durand.claire",
-      nom: "Durand",
-      prenom: "Claire",
-      idRole: role.id,
-    }).returning();
-
-    assertExists(created);
-    assertEquals(created.id, "durand.claire");
-    assertEquals(created.nom, "Durand");
+    const [role1] = await seedRoles([{ nom: "admin" }]);
+    const [role2] = await seedRoles([{ nom: "employee" }]);
+    await seedUsers([
+      { id: "u1", nom: "A", prenom: "A", idRole: role1.id },
+      { id: "u2", nom: "B", prenom: "B", idRole: role2.id },
+    ]);
+    const rows = await testDb
+      .select()
+      .from(users)
+      .where(eq(users.idRole, role1.id));
+    assertEquals(rows.length, 1);
+    assertEquals(rows[0].id, "u1");
   },
   sanitizeResources: false,
   sanitizeOps: false,
 });
 
 Deno.test({
-  name: "integration: cleanup - close pool",
+  name: "integration users: create and retrieve by id",
   async fn() {
-    await closeTestPool();
+    await truncateAll();
+    const [role] = await seedRoles([{ nom: "admin" }]);
+    const [created] = await testDb
+      .insert(users)
+      .values({ id: "durand.claire", nom: "Durand", prenom: "Claire", idRole: role.id })
+      .returning();
+    assertExists(created);
+    assertEquals(created.id, "durand.claire");
+
+    const row = await testDb
+      .select()
+      .from(users)
+      .where(eq(users.id, "durand.claire"))
+      .then((r) => r[0] ?? null);
+    assertExists(row);
+  },
+  sanitizeResources: false,
+  sanitizeOps: false,
+});
+
+Deno.test({
+  name: "integration users: get by id returns null when not found",
+  async fn() {
+    await truncateAll();
+    const row = await testDb
+      .select()
+      .from(users)
+      .where(eq(users.id, "nonexistent"))
+      .then((r) => r[0] ?? null);
+    assertEquals(row, null);
+  },
+  sanitizeResources: false,
+  sanitizeOps: false,
+});
+
+Deno.test({
+  name: "integration users: update user fields",
+  async fn() {
+    await truncateAll();
+    const [role] = await seedRoles([{ nom: "employee" }]);
+    await seedUsers([{ id: "test.user", nom: "Test", prenom: "User", idRole: role.id }]);
+    const [updated] = await testDb
+      .update(users)
+      .set({ nom: "Updated", prenom: "Name" })
+      .where(eq(users.id, "test.user"))
+      .returning();
+    assertExists(updated);
+    assertEquals(updated.nom, "Updated");
+  },
+  sanitizeResources: false,
+  sanitizeOps: false,
+});
+
+Deno.test({
+  name: "integration users: delete user",
+  async fn() {
+    await truncateAll();
+    const [role] = await seedRoles([{ nom: "employee" }]);
+    await seedUsers([{ id: "to.delete", nom: "Del", prenom: "Me", idRole: role.id }]);
+    await testDb.delete(users).where(eq(users.id, "to.delete"));
+    const row = await testDb
+      .select()
+      .from(users)
+      .where(eq(users.id, "to.delete"))
+      .then((r) => r[0] ?? null);
+    assertEquals(row, null);
   },
   sanitizeResources: false,
   sanitizeOps: false,