package test

import "testing"

type TestValue struct {
    ExpectedValue string
    ExpectedErr error
    BackupId int
}

func TestGetFileNameFails(t *testing.T) {
    expected := []TestValue{
        TestValue{BackupId: -1, ExpectedValue: "", ExpectedErr: BAD_ID},
        TestValue{BackupId: 0, ExpectedValue: "", ExpectedErr: BAD_ID},
        TestValue{BackupId: 10200300, ExpectedValue: "", ExpectedErr: BACKUP_ID_TOO_BIG},
    }
    for _, testValue := range expected {
        backupId := testValue.BackupId
        expectedErr := testValue.ExpectedErr
        expectedValue := testValue.ExpectedValue

        resultValue, resultError := GetFileName(backupId)
        if resultError != expectedErr {
            t.Errorf("GetFileName(%d) returned wrong err: %s", backupId, expectedErr)
        }

        if resultValue != expectedValue {
            t.Errorf("GetFileName(%d) returned wrong value: %s", backupId, resultValue)
        }
    }
}

func TestGetFileNameSuccess(t *testing.T) {
    expected := []TestValue{
        TestValue{BackupId: 10, ExpectedValue: "Backup#000010", ExpectedErr: nil},
        TestValue{BackupId: 20, ExpectedValue: "Backup#000020", ExpectedErr: nil},
        TestValue{BackupId: 100500, ExpectedValue: "Backup#100500", ExpectedErr: nil},
    }
    for _, testValue := range expected {
        backupId := testValue.BackupId
        expectedErr := testValue.ExpectedErr
        expectedValue := testValue.ExpectedValue

        resultValue, resultError := GetFileName(backupId)
        if resultError != expectedErr {
            t.Errorf("GetFileName(%d) returned wrong err: %s", backupId, resultError)
        }

        if resultValue != expectedValue {
            t.Errorf("GetFileName(%d) returned wrong value: %s", backupId, resultValue)
        }
    }
}