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Start your free trialLiberty Mudzvova
5,559 PointsWhat am i doing wrong its showing a bummer
Unit testing in Java
package com.example;
import org.junit.Before;
import org.junit.Test;
import static org.junit.Assert.*;
public class CalculatorTest {
private Calculator calculator;
@Before
public void setUp() throws Exception {
calculator = new Calculator();
}
@Test
public void addingMultipleNumbersProducesResult() throws Exception {
Calculator calculator = new Calculator();
int answer = calculator.addNumbers(1 ,2, 3);
assertEquals(6, answer);
}
@Test
public void addingSingleNumberTotalsAppropriately() throws Exception {
Calculator calculator = new Calculator();
int answer = calculator.addNumbers(1);
assertEquals(1, answer);
}
}
package com.example;
public class Calculator {
public int addNumbers(int... numbers) {
int total = 0;
for (int number : numbers) {
total += number;
}
return total;
}
}
1 Answer
Zhaopeng Wang
Full Stack JavaScript Techdegree Graduate 32,210 Points- You need to create a private field Calculator calculator
- Next, remove the duplicate Calculator initialization in the tests
- The main point of setUp here is to apply DRY principle
package com.example;
import org.junit.Before;
import org.junit.Test;
import static org.junit.Assert.*;
public class CalculatorTest {
private Calculator calculator;
@Before
public void setUp() throws Exception {
calculator = new Calculator();
}
@Test
public void addingMultipleNumbersProducesResult() throws Exception {
int answer = this.calculator.addNumbers(1 ,2, 3);
assertEquals(6, answer);
}
@Test
public void addingSingleNumberTotalsAppropriately() throws Exception {
int answer = this.calculator.addNumbers(1);
assertEquals(1, answer);
}
}
Liberty Mudzvova
5,559 PointsLiberty Mudzvova
5,559 PointsThank you very much it was helpful