public void NullTest()
{
var generator = new ImposedBlockGenerator();
Assert.IsNull(generator.Next());
generator.SetBlock(null);
Assert.IsNull(generator.Next());
}
public char?GetNextBlockChar(PredictionRequest predictionRequest, BlockGenerationMode mode)
{
string developer = GetDeveloperName(predictionRequest);
// MaxOccurrencesOfCharacterInBlock = 1 - random block generator.
// MaxOccurrencesOfCharacterInBlock > 1 - alternating tratments design.
const int MaxOccurrencesOfCharacterInBlock = 2;
using (var databaseContext = this.CreateContext())
{
var lastRbgData = GetLastRbgDatas(databaseContext, developer, MaxOccurrencesOfCharacterInBlock);
int experimentDay = CalculateCurrentExperimentDay(lastRbgData);
// Do nothing if we have RBG data for current experiment day.
if (lastRbgData.Any() && experimentDay == lastRbgData[0].ExperimentDay)
{
return(lastRbgData[0].Mode[0]);
}
// Calculate for new day.
char?nextCharacterInBlock = null;
if (mode == BlockGenerationMode.RandomBlockGenerator)
{
// [0] 2018-01-05 JOHN A
// [1] 2018-01-04 JOHN B
// [2] 2018-01-03 JOHN A
// [3] 2018-01-02 JOHN B
var block = lastRbgData
.Select(g => g.Mode[0])
.Reverse()
.ToArray();
var blockGenerator = RandomBlockGenerator.Create(new[] { 'A', 'B' });
blockGenerator.SetBlock(block);
// block = { 'B', 'A', 'B', 'A' }
nextCharacterInBlock = blockGenerator.Next(MaxOccurrencesOfCharacterInBlock);
}
else if (mode == BlockGenerationMode.ImposedParticipant)
{
Participant participant = GetParticipant(developer, databaseContext);
if (participant != null)
{
var generator = new ImposedBlockGenerator();
generator.SetBlock(participant.Block.ToList());
generator.SetPosition(experimentDay);
nextCharacterInBlock = generator.GetForIndex(generator.Position);
}
}
AppendRbgData(databaseContext, developer, experimentDay, nextCharacterInBlock);
return(nextCharacterInBlock);
}
}
public void Test()
{
var generator = new ImposedBlockGenerator();
generator.SetBlock(new List <char> {
'A', 'B', 'C', 'D'
});
generator.SetPosition(-5);
Assert.AreEqual('A', generator.Next());
Assert.AreEqual('B', generator.Next());
Assert.AreEqual('C', generator.Next());
Assert.AreEqual('D', generator.Next());
Assert.AreEqual('A', generator.Next());
Assert.AreEqual('B', generator.Next());
Assert.AreEqual('C', generator.Next());
Assert.AreEqual('D', generator.Next());
Assert.AreEqual('A', generator.Next());
Assert.AreEqual('B', generator.Next());
Assert.AreEqual('C', generator.Next());
Assert.AreEqual('D', generator.Next());
}
