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/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package polynomial;
import java.util.Scanner;
import org.junit.After;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import static org.junit.Assert.*;
/**
*
* @author camilstaps
*/
public class PolynomialTest {
public PolynomialTest() {
}
@BeforeClass
public static void setUpClass() {
}
@AfterClass
public static void tearDownClass() {
}
@Before
public void setUp() {
}
@After
public void tearDown() {
}
/**
* Test of toString method, of class Polynomial.
*/
@Test
public void testToString() {
System.out.println("toString");
Polynomial instance = new Polynomial("3 5 -4 1 2.5 0 -3.4 -7"); // Test exp=0, exp=1, exp>1, positive & negative integer & floating point coefficients
String expResult = "3.000000x^5-4.000000x+2.500000-3.400000x^-7";
String result = instance.toString();
assertEquals(expResult, result);
}
/**
* Test of minus method, of class Polynomial.
*/
@Test
public void testMinus() {
System.out.println("minus");
Polynomial b = new Polynomial("5 3 4 2 3 1 10 0"); // 5x^3 + 4x^2 + 3x + 10
Polynomial instance = new Polynomial("7 4 -4 2 3 1 5 0"); // 7x^4 - 4x^2 + 3x + 5
instance.minus(b);
assertEquals(new Polynomial("7 4 -5 3 -8 2 -5 0"), instance); // 7x^4 - 5x^3 - 8x^2 - 5
}
/**
* Test of times method, of class Polynomial.
*/
@Test
public void testTimes() {
System.out.println("times");
Polynomial b = new Polynomial("5 3 4 2");
Polynomial instance = new Polynomial("7 1 6 3");
instance.times(b);
assertEquals(new Polynomial("30 6 24 5 35 4 28 3"), instance);
}
/**
* Test of divide method, of class Polynomial.
*/
@Test
public void testDivide() {
System.out.println("divide");
Polynomial b = null;
Polynomial instance = new Polynomial();
instance.divide(b);
// TODO review the generated test code and remove the default call to fail.
fail("The test case is a prototype.");
}
/**
* Test of equals method, of class Polynomial.
*/
@Test
public void testEquals() {
System.out.println("equals");
Object other_poly = new Polynomial("3 5 4 2");
Polynomial instance = new Polynomial("4 2 3 5");
boolean expResult = true;
boolean result = instance.equals(other_poly);
assertEquals(expResult, result);
}
/**
* Test of plus method, of class Polynomial.
*/
@Test
public void testPlus_Polynomial() {
System.out.println("plus");
Polynomial b = new Polynomial("5 3 4 2 3 1 10 0"); // 5x^3 + 4x^2 + 3x + 10
Polynomial instance = new Polynomial("7 4 -4 2 7 1 5 0"); // 7x^4 - 4x^2 + 7x + 5
instance.plus(b);
assertEquals(new Polynomial("7 4 5 3 10 1 15 0"), instance); // 7x^4 + 5x^3 + 10x + 15
}
/**
* Test of plus method, of class Polynomial.
*/
@Test
public void testPlus_Term() {
System.out.println("plus");
Term t = Term.scanTerm(new Scanner("5 3"));
Polynomial instance = new Polynomial("4 7 2 3 1 0"); // normal addition
instance.plus(t);
assertEquals(new Polynomial("4 7 7 3 1 0"), instance);
instance = new Polynomial("4 7 -5 3 1 0"); // addition when the term cancels out
instance.plus(t);
assertEquals(new Polynomial("4 7 1 0"), instance);
}
/**
* Test of apply method, of class Polynomial.
*/
@Test
public void testApply() {
System.out.println("apply");
double x = 17.0;
Polynomial instance = new Polynomial("5 4 0.5 3 9 2 8 0");
double expResult = 422670.5;
double result = instance.apply(x);
assertEquals(expResult, result, 0.0);
}
}
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