public static void SetUp()
{
// Three scenarios are supported:
//
// A: Environment variable MSSQL_SA_PASSWORD present.
// => Assume that a suitable local SQL Server instance is running
// already on ports 1433 and 3341. Use the given password to
// authenticate as SA.
//
// B: Process listening on port 1433 but not 3341.
// => Assume that a suitable local SQL Server instance is running on
// port 1433 and supports integrated authentication. Start an
// ephemeral SQL Server container on port 3341 using a generated SA
// password.
//
// C: No process listening on port 1433 or 3341.
// => Start an ephemeral SQL Server container on ports 1433 and 3341
// using a generated SA password.
var password = Environment
.GetEnvironmentVariable(PasswordName)
.NullIfEmpty();
if (password is not null)
{
// Scenario A
DefaultServerPassword = password;
AlternateServerPassword = password;
}
else if (TcpPort.IsListening(DefaultServerPort))
{
// Scenario B
_container = new SqlServerContainer(AlternateServerPort);
AlternateServerPassword = _container.Credential.Password;
}
else
{
// Scenario C
_container = new SqlServerContainer(DefaultServerPort, AlternateServerPort);
DefaultServerPassword = _container.Credential.Password;
AlternateServerPassword = _container.Credential.Password;
}
}
