CS计算机代考程序代写 junit b’712c906f01026279956c7c35b3ed77b95fb4fd’

b’712c906f01026279956c7c35b3ed77b95fb4fd’

blob 4054�package programmingexample4;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertTrue;

import org.junit.jupiter.api.Test;

public class TestBag {

@Test
public void simpleTest() {
Bag fruitBag = new ArrayListBag();
fruitBag.add(new Apple(“Gala”));
fruitBag.add(new Apple(“Fuji”));
fruitBag.add(new Orange(“Navel”));

assertEquals(1, fruitBag.count(new Apple(“Gala”)));
assertEquals(1, fruitBag.count(new Apple(“Fuji”)));
assertEquals(1, fruitBag.count(new Orange(“Navel”)));

// The same element again
fruitBag.add(new Apple(“Gala”));
assertEquals(2, fruitBag.count(new Apple(“Gala”)));
assertEquals(1, fruitBag.count(new Apple(“Fuji”)));
assertEquals(1, fruitBag.count(new Orange(“Navel”)));
}

@Test
public void removeTest() {
Bag fruitBag = new ArrayListBag();
fruitBag.add(new Apple(“Gala”));
fruitBag.add(new Apple(“Fuji”), 2);
fruitBag.add(new Orange(“Navel”), 3);

fruitBag.remove(new Orange(“Navel”), 2);
assertEquals(1, fruitBag.count(new Apple(“Gala”)));
assertEquals(2, fruitBag.count(new Apple(“Fuji”)));
assertEquals(1, fruitBag.count(new Orange(“Navel”)));

fruitBag.remove(new Apple(“Fuji”), 2);
assertEquals(1, fruitBag.count(new Apple(“Gala”)));
assertEquals(0, fruitBag.count(new Apple(“Fuji”)));
assertEquals(1, fruitBag.count(new Orange(“Navel”)));

fruitBag.remove(new Apple(“Gala”), 3);
assertEquals(0, fruitBag.count(new Apple(“Gala”)));
assertEquals(0, fruitBag.count(new Apple(“Fuji”)));
assertEquals(1, fruitBag.count(new Orange(“Navel”)));

// Check the invariant hasn’t been broken
for (Count c : fruitBag)
assertTrue(c.getCount() > 0);
}

@Test
public void sizeTest() {
Bag fruitBag = new ArrayListBag();
fruitBag.add(new Apple(“Gala”));
fruitBag.add(new Apple(“Fuji”), 2);
fruitBag.add(new Orange(“Navel”), 3);

assertEquals(6, fruitBag.size());
}

@Test
public void sumTest() {
Bag b = new ArrayListBag();
Apple a1 = new Apple(“Gala”);
Apple a2 = new Apple(“Fuji”);
Apple a3 = new Apple(“Granny Smith”);
b.add(a1, 2);
b.add(a2, 3);
b.add(a3);

Bag b2 = new ArrayListBag();
b2.add(a2);
b2.add(a1);

Bag b3 = b.sum(b2);

assertEquals(3, b3.count(a1));
assertEquals(4, b3.count(a2));
assertEquals(1, b3.count(a3));

int counter = 0;
for (Count c : b3) {
if (c.getElement().equals(a1))
assertEquals(3, c.getCount());
else if (c.getElement().equals(a2))
assertEquals(4, c.getCount());
else if (c.getElement().equals(a3))
assertEquals(1, c.getCount());
counter++;
}

assertEquals(3, counter);
}

@Test
public void simpleEqualityTest() {
Bag b = new ArrayListBag();
Apple a1 = new Apple(“Gala”);
Apple a2 = new Apple(“Fuji”);
Apple a3 = new Apple(“Granny Smith”);
b.add(a1, 2);
b.add(a2, 3);
b.add(a3);

assertTrue(b.equals(b));

Bag b2 = new ArrayListBag();
b2.add(a3);
b2.add(a1, 2);
b2.add(a2, 3);

assertTrue(b.equals(b2));
assertTrue(b2.equals(b));

b2.add(a1);

assertFalse(b.equals(b2));
assertFalse(b2.equals(b));

Bag b3 = new ArrayListBag();
b3.add(a3);
b3.add(a1, 2);
b3.add(a2, 3);
b3.add(new Apple(“Honey Crisp”));

assertFalse(b.equals(b3));
assertFalse(b3.equals(b));
}

}