Question: Download the jUnit class MathematicsTest.java from desire to learn Create a class Mathematics.java that passes all the tests import static org. junit.Assert.*; import java.util.HashSet; import
Download the jUnit class MathematicsTest.java from desire to learn
Create a class Mathematics.java that passes all the tests
import static org. junit.Assert.*;
import java.util.HashSet;
import org.junit.Test;
public class MathematicsTest {
private Mathematics math;
public MathematicsTest()
{
math = new Mathematics();
}
@Test
public void testPIValue() {
assertEquals(3.14159, Mathematics.PI, 0.1);
}
@Test
public void testFeetToKMRatioValue() {
assertEquals(0.0003048,
Mathematics.ONE_FOOT_TO_KILOMETER_RATIO, 0.1);
}
@Test
public void testGetCircleArea1() {
double area = math.getCircleArea(1.0);
assertEquals(3.14159, area, 0.1);
}
@Test
public void testGetCircleArea2() {
double area = math.getCircleArea(15.0);
assertEquals(706.85775, area, 0.1);
}
@Test
public void testGetSquareArea1() {
double area = math.getSquareArea(2.0);
assertEquals(4.0, area, 0.1)
}
@Test
public void testGetSquareArea2() {
double area = math.getSquareArea(32.0);
assertEquals(1024.0, area, 0.1);
}
@Test
public void testAdd1() {
double sum = math.add(6.0, 7.0);
assertEquals(13.0, sum, 0.1);
}
@Test
public void testAdd2() {
double sum = math.add(-6.0, 6.0);
assertEquals(0.0, sum, 0.1);
}
@Test
public void testTimes1() {
double product = math.times(1.0, 5.0);
assertEquals(5.0, product, 0.1);
}
@Test
public void testTimes2() {
double product = math.times(20.0, 20.0);
assertEquals(400.0, product, 0.1);
}
@Test
public void testSubtract1() {
double difference = math.subtract(0.0, 20.0);
assertEquals(-20.0, difference, 0.1);
}
@Test
public void testSubtract2() {
double difference = math.subtract(20.0, 20.0);
assertEquals(0.0, difference, 0.1);
}
@Test
public void testDivide1() {
int division = math.divide(20, 10);
assertEquals(2, division);
}
@Test
public void testDivide2() {
int division = math.divide(20, 0);
assertEquals(0, division);
}
@Test
public void testAbsolute1() {
int abs = math.absoluteValue(1);
assertEquals(1, abs);
}
@Test
public void testAbsolute2() {
int abs = math.absoluteValue(-5000);
assertEquals(5000, abs);
}
@Test
public void testRandomNumberBetweenTenAndTwentyButNotFifteen()
{
HashSet
for(int i=0; i < 10000; i++)
6
COMP1451
[
LAB4A
]
{
int number =
math.getRandomNumberBetweenTenAndTwentyButNotFifteen();
boolean lessThanTen = number < 10;
boolean greaterThanTwenty = number > 20;
boolean notFifteen = number == 15;
assertFalse(lessThanTen);
assertFalse(greaterThanTwenty);
assertFalse(notFifteen);
values.add(number);
}
assertEquals(10, values.size());
}
@Test
public void testFootToKM1() {
double km = math.convertFeetToKilometers(1.0);
assertEquals(0.0003048, km, 0.1);
}
@Test
public void testFootToKM2() {
double km = math.convertFeetToKilometers(892.0);
assertEquals(0.272186, km, 0.1);
}
@Test
public void testDoubleTheNumber1(){
Integer number = Integer.valueOf(5);
Integer answer = math.doubleTheNumber(number);
assertEquals((Integer)10, answer);
}
@Test
public void testDoubleTheNumber2(){
6
COMP1451
[
LAB4A
]
Integer number = Integer.valueOf(16);
Integer answer = math.doubleTheNumber(number);
assertEquals((Integer)32, answer);
}
@Test
public void testDoubleTheNumber3(){
Integer number = null;
try{
Integer answer = math.doubleTheNumber(number);
fail();
}catch(NullPointerException e){
assertEquals("You can't double null!!", e.getMessage());
} catch(Exception e) {
fail ();
}
}
}
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