async public Task ShouldThrowMigrationException(int sqlExceptionNumber)
{
using AutoMock mock = AutoMock.GetLoose();
mock.Mock <IMigrateAsyncWrapper>()
.Setup(x => x.MigrateAsync(It.IsAny <DatabaseFacade>()))
.Throws(new SqlExceptionBuilder()
.WithErrorNumber(sqlExceptionNumber)
.Build());
DatabaseMigrator migrator = mock.Create <DatabaseMigrator>();
await Assert.ThrowsAsync <MigrationException>(() => migrator.EnsureMigrated());
}