Add utils/role unit tests (#8266)

app/utils/role/index.test.ts

@@ -0,0 +1,56 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+import {hasPermission} from '.';
+
+import type RoleModel from '@typings/database/models/servers/role';
+
+// Mock RoleModel type (simplified version)
+const mockRoleModel = (permissions: string[]): RoleModel => ({
+    id: 'role-id',
+    name: 'role-name',
+    permissions,
+} as RoleModel);
+
+describe('hasPermission', () => {
+    it('should return false when roles array is empty', () => {
+        const roles: RoleModel[] = [];
+
+        const result = hasPermission(roles, 'some_permission');
+        expect(result).toBe(false); // No roles, no permissions, expect false
+    });
+
+    it('should return false when a single role does not have the permission', () => {
+        const roles: RoleModel[] = [mockRoleModel(['permission_1', 'permission_2'])];
+
+        const result = hasPermission(roles, 'missing_permission');
+        expect(result).toBe(false); // Role does not have 'missing_permission'
+    });
+
+    it('should return true when a single role has the permission', () => {
+        const roles: RoleModel[] = [mockRoleModel(['permission_1', 'permission_2', 'desired_permission'])];
+
+        const result = hasPermission(roles, 'desired_permission');
+        expect(result).toBe(true); // Role has 'desired_permission'
+    });
+
+    it('should return false when multiple roles do not have the permission', () => {
+        const roles: RoleModel[] = [
+            mockRoleModel(['permission_1', 'permission_2']),
+            mockRoleModel(['permission_3', 'permission_4']),
+        ];
+
+        const result = hasPermission(roles, 'missing_permission');
+        expect(result).toBe(false); // None of the roles have 'missing_permission'
+    });
+
+    it('should return true when one of multiple roles has the permission', () => {
+        const roles: RoleModel[] = [
+            mockRoleModel(['permission_1', 'permission_2']),
+            mockRoleModel(['desired_permission', 'permission_4']),
+        ];
+
+        const result = hasPermission(roles, 'desired_permission');
+        expect(result).toBe(true); // Second role has 'desired_permission'
+    });
+});