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Java Unit Testing in Java How to Test Using Before to not repeat yourself

Posted by Harsh Jain
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Harsh Jain
Front End Web Development Techdegree Student 1,783 Points

Use the @Before method to instantiate a new Calculator and use that instance in each method. Don't forget to remove the

I tried every and rewatch the video but unable to find ansere

com/example/CalculatorTest.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();

        calculator.addNumbers(1 ,2, 3);

      assertEquals(6, calculator.getProducesResult() );
    }

    @Test
    public void addingSingleNumberTotalsAppropriately() throws Exception {
        Calculator calculator = new Calculator();

        calculator.addNumbers(1);

        assertEquals(1, calculator.getProducesResult() );

    }
com/example/Calculator.java 
package com.example;

public class Calculator {

    public int addNumbers(int... numbers) {
        int total = 0;
        for (int number : numbers) {
            total += number;
        }
        return total;
    }
}