Testowanie wyjątków

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

import org.junit.jupiter.api.Test;

class ExceptionsDemo {
    @Test
    public void shouldThrowExceptionWhenHostIsNull() {
        assertThrows(IllegalArgumentException.class, () -> {
            ConfigFactory.getForDatabase(null, 3000);
        });
    }

    @Test
    public void shouldThrowExceptionWhenHostIsEmpty() {
        Throwable exception = assertThrows(IllegalArgumentException.class, () -> {
            ConfigFactory.getForDatabase("", 3000);
        });

        assertEquals("Host cannot be empty!", exception.getMessage());
    }
}