Adding Calculator Test Methods in Eclipse
Overview
In this tutorial, we will see how to create a new JUnit test case and test methods in Eclipse for Calculator Java class.
Creating a JUnit Test Case
Junit Test Case is a test class that will test one of the existing classes in the Project. In our example its the Calculator class. To create a new JUnit test case, right-click the class you want to test in the Package Explorer >> New >> JUnit Test Case as shown in the picture.
New Test Case
In the new screen, enter the test class name and choose the JUnit library version.
Once done click on the Next button.
Check the checkboxes to add the test method stubs you want to test. Choose the test methods and click on the Finish button.
In the next process, Eclipse IDE would prompt you to add the JUnit library to your project.
Click on the OK button.
Calculator Test Methods:
package com.testingdocs.calculator;
import static org.junit.jupiter.api.Assertions.*;
import org.junit.jupiter.api.AfterAll;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
class CalculatorTest {
@BeforeAll
static void setUpBeforeClass() throws Exception {
}
@AfterAll
static void tearDownAfterClass() throws Exception {
}
@BeforeEach
void setUp() throws Exception {
}
@AfterEach
void tearDown() throws Exception {
}
@Test
void testCalculator() {
fail("Not yet implemented"); // TODO
}
@Test
void testAdd() {
fail("Not yet implemented"); // TODO
}
@Test
void testSubtract() {
fail("Not yet implemented"); // TODO
}
@Test
void testMultiply() {
fail("Not yet implemented"); // TODO
}
@Test
void testDivide() {
fail("Not yet implemented"); // TODO
}
}
Once you’re done, you should have a new JUnit test case test class created in your project. We can add the test logic to the test methods as shown in this example:
JUnit Calculator Test Case Example
More information on JUnit official website:
