Writing Tests

The following example provides a glimpse at the minimum requirements for writing a test in JUnit Jupiter. Subsequent sections of this chapter will provide further details on all available features.

A first test case

• Java
• Kotlin

import static org.junit.jupiter.api.Assertions.assertEquals;

import example.util.Calculator;

import org.junit.jupiter.api.Test;

class MyFirstJUnitJupiterTests {

    private final Calculator calculator = new Calculator();

    @Test
    void addition() {
        assertEquals(2, calculator.add(1, 1));
    }
}

import example.util.Calculator
import org.junit.jupiter.api.Assertions.assertEquals
import org.junit.jupiter.api.Test

class MyFirstJUnitJupiterTests {
    private val calculator = Calculator()

    @Test
    fun addition() {
        assertEquals(2, calculator.add(1, 1))
    }
}