public void InventorySpaceUpperBound_ConstantInjectWithdrawRate_EqualsNextPeriodInventoryPlusMaxWithdrawalRateAdjustedForLoss()
{
const double maxInjectionRate = 56.8;
const double maxWithdrawalRate = 47.12;
var injectWithdrawRange = new InjectWithdrawRange(-maxWithdrawalRate, maxInjectionRate);
const double inventoryPercentLoss = 0.03;
const double minInventory = 0.0;
const double maxInventory = 1000.0;
var injectWithdrawalRanges = new List <InjectWithdrawRangeByInventory>
{
(inventory : 0.0, injectWithdrawRange),
(inventory : 100.0, injectWithdrawRange),
(inventory : 300.0, injectWithdrawRange),
(inventory : 600.0, injectWithdrawRange),
(inventory : 800.0, injectWithdrawRange),
(inventory : 1000.0, injectWithdrawRange),
};
var stepInjectWithdrawConstraint = new StepInjectWithdrawConstraint(injectWithdrawalRanges);
const double nextPeriodMinInventory = 320.0;
const double nextPeriodMaxInventory = 620.0;
double thisPeriodMaxInventory = stepInjectWithdrawConstraint.InventorySpaceUpperBound(nextPeriodMinInventory, nextPeriodMaxInventory, minInventory, maxInventory, inventoryPercentLoss);
const double expectedThisPeriodMaxInventory = (nextPeriodMaxInventory + maxWithdrawalRate) / (1 - inventoryPercentLoss);
Assert.Equal(expectedThisPeriodMaxInventory, thisPeriodMaxInventory, 12);
}
public void InventorySpaceUpperBound_InventoryDependentInjectWithdrawRate_ConsistentWithGetInjectWithdrawRange()
{
const double inventoryPercentLoss = 0.03;
const double minInventory = 0.0;
const double maxInventory = 1000.0;
const double nextPeriodMinInventory = 320.0;
const double nextPeriodMaxInventory = 590.5;
double thisPeriodMaxInventory = _stepConstraint.InventorySpaceUpperBound(nextPeriodMinInventory, nextPeriodMaxInventory, minInventory, maxInventory, inventoryPercentLoss);
double thisPeriodMaxWithdrawalRateAtInventory = _stepConstraint.GetInjectWithdrawRange(thisPeriodMaxInventory).MinInjectWithdrawRate;
double derivedNextPeriodMaxInventory = thisPeriodMaxInventory * (1 - inventoryPercentLoss) + thisPeriodMaxWithdrawalRateAtInventory;
Assert.Equal(nextPeriodMaxInventory, derivedNextPeriodMaxInventory, 12);
}