JUnit 5 Cheat Sheet

@org.junit.jupiter.api.Test
void exampleTest() {
    Assertions.assertTrue(trueBool);
    Assertions.assertFalse(falseBool);

    Assertions.assertNotNull(notNullString);
    Assertions.assertNull(notNullString);

    Assertions
        .assertNotSame(originalObject, otherObject);
    Assertions.assertEquals(4, 4);
    Assertions.assertNotEquals(3, 2);

    Assertions
        .assertArrayEquals(
            new int[]{1,2,3},
            new int[]{1,2,3},
            "Array Equal Test");

    Iterable<Integer> listOne = 
        new ArrayList<>(Arrays.asList(1,2,3,4));
    Iterable<Integer> listTwo =
        new ArrayList<>(Arrays.asList(1,2,3,4));
    Assertions.assertIterableEquals(listOne, listTwo);

    Assertions.assertTimeout(Duration.ofMillis(100), () -> {
        Thread.sleep(50);
        return "result";
    });

    Throwable exception = Assertions
      .assertThrows(IllegalArgumentException.class,
        () -> {
          throw
            new IllegalArgumentException(
              "error message");
        });

    Assertions.fail("You shall not parse 🧙");
}