@Test
public void testEmptyPricing() {
// when there is nobody to search just go at random.
PurchasesDepartment dept = mock(PurchasesDepartment.class);
// search will always return null
when(dept.getAvailableBudget()).thenReturn(100);
when(dept.getGoodType()).thenReturn(UndifferentiatedGoodType.GENERIC);
MersenneTwisterFast random = new MersenneTwisterFast(0);
when(dept.getRandom()).thenReturn(random);
// we need a stub market
Market market = mock(Market.class);
when(market.getLastPrice()).thenReturn(-1);
when(dept.getMarket()).thenReturn(market);
BidPricingStrategy pricing = new UrgentPriceFollowerStrategy(dept);
for (int i = 0;
i < 10000;
i++) // because there is no last price in the market we get to randomize
{
int maxPrice = pricing.maxPrice(UndifferentiatedGoodType.GENERIC);
assertTrue(maxPrice >= 0);
assertTrue(maxPrice <= 100);
}
// there should be about 10% of the data in any decile
int decile = 0;
for (int i = 0; i < 10000; i++) {
int maxPrice = pricing.maxPrice(UndifferentiatedGoodType.GENERIC);
if (maxPrice >= 40 && maxPrice < 50) decile++;
}
assertTrue(decile >= 900 && decile <= 1100);
}
@Test
public void testUrgencyStub() {
// we are going to check that prices change when urgency chnge
PurchasesDepartment dept = mock(PurchasesDepartment.class);
when(dept.getGoodType()).thenReturn(UndifferentiatedGoodType.GENERIC);
when(dept.getAvailableBudget()).thenReturn(100);
MersenneTwisterFast random = new MersenneTwisterFast(0);
when(dept.getRandom()).thenReturn(random);
// we need a stub market
Market market = mock(Market.class);
when(market.getLastPrice()).thenReturn(50); // so last price is 50
when(dept.getMarket()).thenReturn(market);
BidPricingStrategy pricing = new UrgentPriceFollowerStrategy(dept);
// give fake danger signal!
when(dept.rateCurrentLevel()).thenReturn(Level.DANGER);
for (int i = 0; i < 10; i++)
assertEquals(pricing.maxPrice(UndifferentiatedGoodType.GENERIC), 60);
// give fake barely signal!
when(dept.rateCurrentLevel()).thenReturn(Level.BARELY);
for (int i = 0; i < 10; i++)
assertEquals(pricing.maxPrice(UndifferentiatedGoodType.GENERIC), 50);
// give fake acceptable signal!
when(dept.rateCurrentLevel()).thenReturn(Level.ACCEPTABLE);
for (int i = 0; i < 10; i++)
assertEquals(pricing.maxPrice(UndifferentiatedGoodType.GENERIC), 40);
// give fake too much signal!
when(dept.rateCurrentLevel()).thenReturn(Level.TOOMUCH);
for (int i = 0; i < 10; i++)
assertEquals(pricing.maxPrice(UndifferentiatedGoodType.GENERIC), 25);
}
@Test
public void testUrgencyFull() throws NoSuchFieldException, IllegalAccessException {
// we are going to check that prices change when urgency change
// the only stub is the market
Market market = mock(Market.class);
when(market.getLastPrice()).thenReturn(50); // so last price is 50
model.schedule =
mock(
Schedule
.class); // we also mock the schedule to avoid the inventory control from spamming
// buy orders in the schedule
when(market.getGoodType()).thenReturn(UndifferentiatedGoodType.GENERIC);
Firm f = new Firm(model);
PurchasesDepartment dept =
PurchasesDepartment.getPurchasesDepartment(
100,
f,
market,
FixedInventoryControl.class,
UrgentPriceFollowerStrategy.class,
null,
null)
.getDepartment();
// when there is nobody to search just go at random.
Field field = PurchasesDepartment.class.getDeclaredField("pricingStrategy");
field.setAccessible(true);
BidPricingStrategy pricing = (BidPricingStrategy) field.get(dept);
// assuming the fixed inventory control wants 6
// right now it's danger
for (int i = 0; i < 10; i++)
assertEquals(pricing.maxPrice(UndifferentiatedGoodType.GENERIC), 60);
// barely
for (int i = 0; i < 3; i++)
f.receive(Good.getInstanceOfUndifferentiatedGood(UndifferentiatedGoodType.GENERIC), null);
for (int i = 0; i < 10; i++)
assertEquals(pricing.maxPrice(UndifferentiatedGoodType.GENERIC), 50);
// acceptable
for (int i = 0; i < 3; i++)
f.receive(Good.getInstanceOfUndifferentiatedGood(UndifferentiatedGoodType.GENERIC), null);
for (int i = 0; i < 10; i++)
assertEquals(pricing.maxPrice(UndifferentiatedGoodType.GENERIC), 40);
// too much
for (int i = 0; i < 30; i++)
f.receive(Good.getInstanceOfUndifferentiatedGood(UndifferentiatedGoodType.GENERIC), null);
for (int i = 0; i < 10; i++)
assertEquals(pricing.maxPrice(UndifferentiatedGoodType.GENERIC), 25);
}
/** how "far" sales inventory are from target. */
@Override
public float estimateSupplyGap(GoodType type) {
if (market == null) return 0;
if (!soldToday && market.getLastPrice() >= saleQuote) return 1;
else return 0;
}