public void FirstOrDefault_WithPredicate()
{
ContinuousValue <Person> firstOverTen = _source.ContinuousFirstOrDefault(p => p.Age > 10);
Assert.AreEqual(firstOverTen.CurrentValue.Name, "Jim");
Assert.AreEqual(firstOverTen.CurrentValue.Age, 20);
}
public void FirstOrDefault_Test_GetFirstItem()
{
Person actualFirst = _source[0];
ContinuousValue <Person> firstPerson = _source.ContinuousFirstOrDefault();
Assert.AreEqual(actualFirst, firstPerson.CurrentValue);
}
public void SumIntegers_RemoveItemFromCollection_SumUpdated()
{
ContinuousValue <int> sum = _source.ContinuousSum(p => p.Age);
_source.Remove(_source[0]);
Assert.AreEqual(20, sum.CurrentValue);
}
public void ContinuousSumWithPausing()
{
Random rand = new Random();
DateTime start = DateTime.Now;
ContinuousValue <int> sum = _source.ContinuousSum(p => p.Age);
using (PausedAggregation pausedAggregation = new PausedAggregation())
{
int updateIndex = 0;
for (int i = 0; i < 10000; i++)
{
if (updateIndex >= _source.Count)
{
updateIndex = 0;
}
_source[updateIndex].Age++;
if (sum.CurrentValue <= 0)
{
throw new Exception();
}
updateIndex++;
}
}
var duration = DateTime.Now - start;
Console.WriteLine(duration.ToString());
}
public void FirstOrDefault_AfterEffect_Test()
{
int firstPersonsAge = 0;
ContinuousValue <Person> firstPerson = _source.ContinuousFirstOrDefault(p => firstPersonsAge = p.Age);
Assert.AreEqual(_source[0].Age, firstPersonsAge);
Assert.AreEqual(firstPerson.CurrentValue.Age, firstPersonsAge);
}
public void SumIntegers_ChangeValueOfMonitoredPropertyCollection_SumUpdated()
{
ContinuousValue <int> sum = _source.ContinuousSum(p => p.Age);
_source[0].Age++;
Assert.AreEqual(31, sum.CurrentValue);
}
public void Count_AddingValueToCollection_CountUpdated()
{
ContinuousValue <int> count = _source.ContinuousCount();
_source.Add(new Person());
Assert.AreEqual(3, count.CurrentValue);
}
public void SumIntegers_MoveItemInCollection_SumTheSame()
{
ContinuousValue <int> sum = _source.ContinuousSum(p => p.Age);
_source.Move(0, 1);
Assert.AreEqual(30, sum.CurrentValue);
}
public void Contains_Test()
{
Person p = _source[0];
ContinuousValue <bool> hasPerson = _source.ContinuousContains(p);
Assert.IsTrue(hasPerson.CurrentValue);
_source.Remove(p);
Assert.IsFalse(hasPerson.CurrentValue);
}
public void FirstOrDefault_Predicate_WithChange()
{
ContinuousValue <Person> firstOverThirty = _source.ContinuousFirstOrDefault(p => p.Age > 30);
Assert.IsNull(firstOverThirty.CurrentValue);
_source[0].Age = 75;
Assert.IsNotNull(firstOverThirty.CurrentValue);
Assert.AreEqual(firstOverThirty.CurrentValue.Age, 75);
}
public void AddRange_Always_UpdatesContinuousValueCorrectly()
{
IEnumerable <Person> people = GetPeople();
ContinuousValue <int> sum = _target.ContinuousSum(p => p.Age);
_target.AddRange(people);
Assert.AreEqual(55, sum.CurrentValue);
}
public void Count_AddingValueToCollection_AfterEffect()
{
int modCount = 0;
ContinuousValue <int> count = _source.ContinuousCount(c => modCount = c);
_source.Add(new Person());
Assert.AreEqual(3, count.CurrentValue);
Assert.AreEqual(modCount, count.CurrentValue);
}
public void SumIntegers_ReplaceItemInCollection_SumUpdated()
{
ContinuousValue <int> sum = _source.ContinuousSum(p => p.Age);
_source[0] = new Person()
{
Age = 50
};
Assert.AreEqual(70, sum.CurrentValue);
}
public void SumIntegers_AddItemToCollection_SumUpdated()
{
ContinuousValue <int> sum = _source.ContinuousSum(p => p.Age);
_source.Add(new Person()
{
Age = 10
});
Assert.AreEqual(40, sum.CurrentValue);
}
public MyParent()
{
_MyChildren = new ObservableCollection <MyChild>();
// Creat the ContinuousFirstOrDefault to watch the MyChildren collection.
// This will monitor for newly added instances,
// as well as changes to the "IsChanged" property on
// instances already in the collection.
_ContinuousIsChanged = MyChildren.ContinuousFirstOrDefault(child => child.IsChanged);
_ContinuousIsChanged.PropertyChanged += (s, e) => RaiseChanged("IsChanged");
}
public void Contains_Test_AfterEffect()
{
Person p = _source[0];
bool personAE = false;
ContinuousValue <bool> hasPerson = _source.ContinuousContains(p, val => personAE = val);
Assert.IsTrue(hasPerson.CurrentValue);
Assert.IsTrue(personAE);
_source.Remove(p);
Assert.IsFalse(hasPerson.CurrentValue);
Assert.IsFalse(personAE);
}
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
if (value != null)
{
ContinuousValue <double> cv = (ContinuousValue <double>)value;
double d = cv.CurrentValue;
return(string.Format("{0:C}", d));
}
else
{
return(string.Empty);
}
}
public void FirstOrDefault_Predicate_AfterEffect()
{
string overThirtyName = null;
ContinuousValue <Person> firstOverThirty = _source.ContinuousFirstOrDefault(
p => p.Age > 30,
p => overThirtyName = (p == null) ? "Nobody" : p.Name);
Assert.IsNull(firstOverThirty.CurrentValue);
Assert.AreEqual(overThirtyName, "Nobody");
_source[0].Age = 75;
Assert.IsNotNull(firstOverThirty.CurrentValue);
Assert.AreEqual(firstOverThirty.CurrentValue.Name, overThirtyName);
}
public void FirstOrDefault_GetFirstItemAfterMove()
{
Person newFirst = new Person()
{
Age = 40, Name = "New"
};
ContinuousValue <Person> firstPerson = _source.ContinuousFirstOrDefault();
_source.Insert(0, newFirst);
Assert.AreEqual(newFirst, firstPerson.CurrentValue);
}
public void ReplaceRange_Always_UpdatesContinuousValueCorrectly()
{
IEnumerable <Person> people = GetPeople();
_target.AddRange(people);
ContinuousValue <int> sum = _target.ContinuousSum(p => p.Age);
var peopleAgeOne = GetPeopleWithAge(1);
_target.ReplaceRange(0, peopleAgeOne);
Assert.AreEqual(10, sum.CurrentValue);
}
public void SumIntegers_ChangeValueOfMonitoredPropertyCollection_PropertyChangedEventFires()
{
ContinuousValue <int> sum = _source.ContinuousSum(p => p.Age);
int callCount = 0;
sum.PropertyChanged += (sender, args) =>
{
callCount++;
Assert.AreEqual("CurrentValue", args.PropertyName);
};
_source[0].Age++;
Assert.AreEqual(1, callCount);
}
public MonitorWindowModel() : base()
{
_tickerData = new ContinuousCollection <StockSaleTick>();
_vwapTicks = new ContinuousCollection <StockSaleTick>();
_allQuotes = new ContinuousCollection <StockQuoteTick>();
_bidTicks = from quote in _allQuotes
where quote.Side == QuoteSide.Bid
select quote;
_askTicks = from quote in _allQuotes
where quote.Side == QuoteSide.Ask
select quote;
_allTicks =
from tick in _tickerData
where tick.Symbol == "AAPL"
select tick;
_graphWindowTicks =
from tick in _tickerData
where tick.TimeStamp >= DateTime.Now.AddMinutes(-5) &&
tick.Symbol == "AAPL"
select tick; // return last 5 minutes worth of ticks for AAPL */
_liveVwap = _allTicks.ContinuousVwap <StockSaleTick>(
tick => tick.Price,
tick => tick.Quantity);
_liveHigh = _allTicks.ContinuousMax <StockSaleTick>(
tick => tick.Price);
_liveMin = _allTicks.ContinuousMin <StockSaleTick>(
tick => tick.Price);
_liveMin.PropertyChanged +=
new PropertyChangedEventHandler(_liveMin_PropertyChanged);
_liveHigh.PropertyChanged +=
new PropertyChangedEventHandler(_liveHigh_PropertyChanged);
_liveVwap.PropertyChanged +=
new PropertyChangedEventHandler(_liveVwap_PropertyChanged);
_simulationTimer = new Timer();
_simulationTimer.Elapsed += new ElapsedEventHandler(_simulationTimer_Elapsed);
_simulationTimer.Interval = 1000;
_simulationTimer.Start(); // create a new tick every second
}
public void PauseAggregation_PropertyChangedInCollection_ValueUpdatedAfterUsingBlockExits()
{
ContinuousValue <int> sum = _source.ContinuousSum(p => p.Age);
Assert.AreEqual(30, sum.CurrentValue);
int callCount = 0;
sum.PropertyChanged += (sender, args) => callCount++;
using (PausedAggregation pausedAggregation = new PausedAggregation())
{
_source[0].Age = 1000;
Assert.AreEqual(0, callCount);
}
Assert.AreEqual(1, callCount);
}
public ModelRoot()
{
_allTransactions = new ObservableCollection <StockTransaction>();
// Note that all of these queries are defined against an EMPTY
// source collection...
_bids = from tx in _allTransactions
where tx.TransactionType == TransactionType.Bid &&
tx.Symbol == "AAPL"
orderby tx.Price ascending
select tx;
_asks = from tx in _allTransactions
where tx.TransactionType == TransactionType.Ask &&
tx.Symbol == "AAPL"
orderby tx.Price descending
select tx;
_executions = from tx in _allTransactions
where tx.TransactionType == TransactionType.Execution &&
tx.Symbol == "AAPL"
orderby tx.Price descending
select tx;
_graphExecutions = from tx in _executions
where tx.TimeStamp >= DateTime.Now.AddMinutes(-5)
select tx;
_minPrice = _executions.ContinuousMin(tx => tx.Price,
newPrice => this.CurrentMin = newPrice);
_maxPrice = _executions.ContinuousMax(tx => tx.Price,
newPrice => this.CurrentMax = newPrice);
_vwap = _executions.ContinuousVwap(tx => tx.Price, tx => tx.Quantity,
newVwap => this.CurrentVwap = newVwap);
_simulationTimer = new Timer(1000);
_simulationTimer.Elapsed += GenerateBogusData;
_simulationTimer.Start();
}
public void ContinuousMax_IfNullableDecimal_TreatsNullsAsZero()
{
ContinuousValue <decimal> value = _target.ContinuousMax(item => item.DecimalTargetValue);
Assert.AreEqual(23, value.CurrentValue);
}
public void Count_ImmediatelyAfterConstruction_SumCompleted()
{
ContinuousValue <int> count = _source.ContinuousCount();
Assert.AreEqual(2, count.CurrentValue);
}
public void ContinuousMin_IfNullableDecimal_ReturnsMinValueThatIsNotNull()
{
ContinuousValue <decimal> value = _target.ContinuousMin(item => item.DecimalTargetValue);
Assert.AreEqual(1, value.CurrentValue);
}
public void SumIntegers_ImmediatelyAfterConstruction_SumCompleted()
{
ContinuousValue <int> sum = _source.ContinuousSum(p => p.Age);
Assert.AreEqual(30, sum.CurrentValue);
}
