public void too_many_requested_message_ids_within_grace_period()
{
const int MinValue = 100;
const int MaxValue = 103;
var sn = TerminalIdOnlyStrategy.ConstantSequenceNumber;
var options =
A.OracleHospitalityClientOptions
.WithTerminalIdLowerBound(MinValue)
.WithTerminalIdUpperBound(MaxValue)
.Build();
var sut = new TerminalIdOnlyStrategy(Options.Create(options));
MessageId initial = null;
using (new TimeProviderTestScope(() => DateTime.Parse("2018-01-01T12:00:00")))
{
initial = sut.Next();
AssertMessageId(new TerminalId(initial.TerminalId.ToString()), sn, initial);
AssertMessageId(new TerminalId(Id(MinValue, MaxValue, initial.TerminalId.Value + 1).ToString()), sn, sut.Next());
AssertMessageId(new TerminalId(Id(MinValue, MaxValue, initial.TerminalId.Value + 2).ToString()), sn, sut.Next());
}
using (new TimeProviderTestScope(() => DateTime.Parse("2018-01-01T12:15:59")))
{
var e = Assert.Throws <ArgumentException>(() => sut.Next());
Assert.Contains($"TerminalId {initial.TerminalId} was last used at 20180101120000", e.Message);
}
}
public void reuse_message_id_when_outside_grace_period()
{
const int MinValue = 100;
const int MaxValue = 103;
var sn = TerminalIdOnlyStrategy.ConstantSequenceNumber;
var options =
A.OracleHospitalityClientOptions
.WithTerminalIdLowerBound(MinValue)
.WithTerminalIdUpperBound(MaxValue)
.Build();
var sut = new TerminalIdOnlyStrategy(Options.Create(options));
MessageId initial = null;
using (new TimeProviderTestScope(() => DateTime.Parse("2018-01-01T12:00:00")))
{
initial = sut.Next();
AssertMessageId(new TerminalId(initial.TerminalId.ToString()), sn, initial);
AssertMessageId(new TerminalId(Id(MinValue, MaxValue, initial.TerminalId.Value + 1).ToString()), sn, sut.Next());
AssertMessageId(new TerminalId(Id(MinValue, MaxValue, initial.TerminalId.Value + 2).ToString()), sn, sut.Next());
}
using (new TimeProviderTestScope(() => DateTime.Parse("2018-01-01T12:16:00")))
{
AssertMessageId(new TerminalId(initial.TerminalId.ToString()), sn, sut.Next());
}
}
public void prune_message_id_history_when_element_outside_grace_period()
{
var options =
A.OracleHospitalityClientOptions
.WithTerminalIdLowerBound(0)
.WithTerminalIdUpperBound(10000)
.Build();
var sut = new TerminalIdOnlyStrategy(Options.Create(options));
const int Threshold = TerminalIdOnlyStrategy.HistoryAdditionOperationsPruneThreshold;
using (new TimeProviderTestScope(() => DateTime.Parse("2018-01-01T12:00:00")))
{
for (var i = 0; i < Threshold - 1; i++)
{
sut.Next();
}
}
Assert.Equal(Threshold - 1, sut.History.Count);
using (new TimeProviderTestScope(() => DateTime.Parse("2018-01-01T12:16:01")))
sut.Next();
Assert.Single(sut.History);
}
public async Task multiple_threads_requesting_message_ids_receive_non_overlapping_messageIds()
{
// Comment out lock statement in
// IncrementTerminalIdKeepSequenceNumberConstantStrategy class to
// introduce a race condition that makes the test fail.
const int MinValue = 0;
const int MaxValue = 10000;
var messageIds = new ConcurrentDictionary <int, int>();
var options =
A.OracleHospitalityClientOptions
.WithTerminalIdLowerBound(MinValue)
.WithTerminalIdUpperBound(MaxValue)
.Build();
var sut = new TerminalIdOnlyStrategy(Options.Create(options));
var t1 = Task.Factory.StartNew(() =>
{
for (var i = 0; i < 1000; i++)
{
var id = sut.Next();
messageIds.AddOrUpdate(id.TerminalId.Value, 1, (_, b) => b + 1);
System.Threading.Thread.Sleep(5);
}
});
var t2 = Task.Factory.StartNew(() =>
{
for (var i = 0; i < 1000; i++)
{
var id = sut.Next();
messageIds.AddOrUpdate(id.TerminalId.Value, 1, (_, b) => b + 1);
System.Threading.Thread.Sleep(1);
}
});
await t1;
await t2;
Assert.Equal(2000, messageIds.Count);
foreach (var ids in messageIds)
{
Assert.Equal(1, ids.Value);
}
}
