/// TEST: Token validation with plugins
/// EXPECT: PASS
/// EXPLAIN: Unary
--- ENDPOINT ---
auth.AuthService/Login

--- REQUEST ---
{
  "username": "testuser",
  "password": "secret"
}

--- RESPONSE ---
{
  "access_token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.testuser",
  "refresh_token": "550e8400-e29b-41d4-a716-446655440000",
  "expires_in": 3600
}

--- ASSERTS ---
@len(.access_token) > 0
@uuid(.refresh_token)
.expires_in == 3600
