java-tutorials/testing-modules/junit-5-basics/src/test/java/com/baeldung/FirstUnitTest.java

package com.baeldung;

import org.junit.jupiter.api.Disabled;
import org.junit.jupiter.api.Test;

import java.util.Arrays;
import java.util.List;

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

class FirstUnitTest {

    @Test
    void lambdaExpressions() {
        List<Integer> numbers = Arrays.asList(1, 2, 3);
        assertTrue(numbers.stream()
                .mapToInt(Integer::intValue)
                .sum() > 5, "Sum should be greater than 5");
    }

    @Disabled("test to show MultipleFailuresError")
    @Test
    void groupAssertions() {
        int[] numbers = {0, 1, 2, 3, 4};
        assertAll("numbers",
                () -> assertEquals(numbers[0], 1),
                () -> assertEquals(numbers[3], 3),
                () -> assertEquals(numbers[4], 1)
        );
    }

    @Test
    @Disabled("Disabled test example")
    void disabledTest() {
        fail();
    }
}