public void GetIndependentValuesUsingMultipleFilters()
{
Variable <int> x = new Variable <int>();
x.SetValues(new[] { 1, 2, 3, 4, 5 });
IFunctionStore store = x.Store;
IMultiDimensionalArray <int> filteredValues;
filteredValues = store.GetVariableValues <int>(
x,
new VariableValueFilter <int>(x, new[] { 1, 2, 3 })
);
Assert.AreEqual(3, filteredValues.Count);
Assert.AreEqual(1, filteredValues[0]);
//same filters different ordering
filteredValues = store.GetVariableValues <int>(
x,
new VariableValueFilter <int>(x, new[] { 3, 2, 1 })
);
Assert.AreEqual(3, filteredValues.Count);
Assert.AreEqual(1, filteredValues[0]);
}
public void SimpleDependendVariable()
{
//create a single variable dependency.
IVariable <double> x = new Variable <double>("x");
IVariable <double> y = new Variable <double>("y");
y.Arguments.Add(x);
IFunctionStore store = y.Store;
store.SetVariableValues(x, new[] { 0.0, 0.1, 0.2 });
Assert.AreEqual(3, store.GetVariableValues(y).Count);
}
public void DependentOn2Variables()
{
IVariable <double> x1 = new Variable <double>("x1");
IVariable <double> x2 = new Variable <double>("x2");
IVariable <double> y = new Variable <double>("y");
y.Arguments.Add(x1);
y.Arguments.Add(x2);
IFunctionStore store = y.Store;
store.SetVariableValues(x1, new[] { 0.0, 0.1, 0.2 });
store.SetVariableValues(x2, new[] { 0.0, 0.1 });
Assert.AreEqual(6, store.GetVariableValues(y).Count);
}
public void GetVariableValueFiltersShouldDealWithNonValueComparableValues()
{
IVariable <TestNode> x = new Variable <TestNode>("x");
IVariable <double> y = new Variable <double>("y");
var amount = 2;
y.Arguments.Add(x);
var node1 = new TestNode {
Name = "1"
};
var node2 = new TestNode {
Name = "2"
};
var node3 = new TestNode {
Name = "3"
};
var node4 = new TestNode {
Name = "4"
};
y[node1] = 2.0;
y[node2] = 5.0;
y[node3] = 8.0;
y[node4] = 10.0;
IFunctionStore store = y.Store;
IList <TestNode> valuesToSelect = new List <TestNode>();
valuesToSelect.Add(node1);
valuesToSelect.Add(node2);
valuesToSelect.Add(node3);
valuesToSelect.Add(node4);
IMultiDimensionalArray array = store.GetVariableValues(x, new VariableValueFilter <TestNode>(x, valuesToSelect));
array[0].Should("1").Be.EqualTo(node1);
array[1].Should("2").Be.EqualTo(node2);
array[2].Should("3").Be.EqualTo(node3);
array[3].Should("4").Be.EqualTo(node4);
}
public void GetVariableValueFilterIndexesShouldBeFast()
{
IVariable <double> x = new Variable <double>("x");
IVariable <double> y = new Variable <double>("y");
var amount = 5000;
IList <double> allValues = new List <double>(amount);
for (int i = 0; i < amount; i++)
{
allValues.Add(i);
}
x.AddValues(allValues);
y.Arguments.Add(x);
IFunctionStore store = y.Store;
IList <double> valuesToSelect = new List <double>();
valuesToSelect.Add(allValues[0]);
valuesToSelect.Add(allValues[50]);
valuesToSelect.Add(allValues[amount - 1]);
IMultiDimensionalArray array = null;
TestHelper.AssertIsFasterThan(130,
() =>
{
for (int i = 0; i < 5000; i++)
{
array = store.GetVariableValues(x, new VariableValueFilter <double>(x, valuesToSelect));
}
});
//orig: 600ms
//now: 15ms
Assert.AreEqual(3, array.Count);
}
