✅ AddAccountsFromCsvAsync_WhenCsvIsValid_ReturnsOk
✅ AddAccountsFromCsvAsync_WhenExceptionIsThrown_ReturnsFail
✅ GetAccountByIdAsync_WhenAccountDoesNotExist_ReturnsNull
✅ GetAccountByIdAsync_WhenAccountExists_ReturnsAccount
✅ GetAllAccountsAsync_WhenAccountsExist_ReturnsListOfAccounts
✅ GetAllAccountsAsync_WhenExceptionIsThrown_ReturnsFail

✅ ChangePassword_WhenChangePasswordFails_ReturnsFail
✅ ChangePassword_WhenCurrentPasswordIsIncorrect_ReturnsFail
✅ ChangePassword_WhenSuccess_ReturnsOk
✅ ChangePassword_WhenUserNotFound_ReturnsFail
✅ EditProfileInfo_WhenAllDataIsChangedCorrectly_ReturnsOk
✅ EditProfileInfo_WhenUpdateFails_ReturnsFail
✅ EditProfileInfo_WhenUsernameIsNoChanged_ReturnsOk
✅ EditProfileInfo_WhenUsernameIsReserved_ReturnsFail
✅ EditProfileInfo_WhenUserNotFound_ReturnsFail
✅ GetProfileInfo_WhenSuccess_ReturnsOk
✅ GetProfileInfo_WhenUserNotFound_ReturnsFail

✅ AddTransactionsFromCsvAsync_ShouldOnlyAddNewTransactions_WhenSomeTransactionsAlreadyExist
✅ AddTransactionsFromCsvAsync_ShouldReturnFail_WhenExceptionIsThrown
✅ AddTransactionsFromCsvAsync_ShouldReturnOk_WhenTransactionsAreAddedSuccessfully
✅ GetAllTransactionsAsync_ShouldReturnAllTransactions
✅ GetAllTransactionsAsync_ShouldReturnEmptyList_WhenNoTransactionsAreFound
✅ GetAllTransactionsAsync_ShouldReturnFailResult_WhenExceptionIsThrown
✅ GetTransactionsByAccountIdAsync_ShouldReturnEmptyList_WhenNoTransactionsAreFound
✅ GetTransactionsByAccountIdAsync_ShouldReturnFailResult_WhenExceptionIsThrown
✅ GetTransactionsByAccountIdAsync_ShouldReturnOkResult_WhenThereAreMultipleTransactionsBetweenTwoAccounts
✅ GetTransactionsByAccountIdAsync_ShouldReturnOkResult_WhenTransactionsAreRetrievedAndGroupedSuccessfully

✅ ChangeRole_WhenOperationSucceeds_ReturnsSuccessResult
✅ ChangeRole_WhenRoleDoesNotExist_ReturnsFailResult
✅ ChangeRole_WhenUserDoesNotExist_ReturnsFailResult
✅ GetUsersAsync_ReturnsUserListWithRoles
✅ Login_WhenLoginSucceeds_ReturnsSuccessResult
✅ Login_WhenPasswordIncorrect_ReturnsFailResult
✅ Login_WhenUsernameNotFound_ReturnsFailResult
✅ SignUpUser_WhenRoleAssignmentFails_ReturnsFailResult
✅ SignUpUser_WhenRoleDoesNotExist_ReturnsFailResult
✅ SignUpUser_WhenUserCreationFails_ReturnsFailResult
✅ SignUpUser_WhenUserIsCreatedAndRoleAssignedSuccessfully_ReturnsSuccessResult

✅ ChangeRole_WhenOperationSucceeds_ReturnsOk
✅ ChangeRole_WhenRoleDoesNotExist_ReturnsBadRequest
✅ Login_WhenLoginSucceeds_ReturnsOkResult
✅ Signup_WhenRoleDoesNotExist_ReturnsBadRequest
✅ Signup_WhenSignUpSucceeds_ReturnsOkResult