package de.neitzel.roleplay.business;

import de.neitzel.roleplay.common.GreetingFormatter;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.mockito.junit.jupiter.MockitoExtension;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.mockito.Mockito.when;

/**
 * Unit tests for {@link GreetingService}.
 */
@ExtendWith(MockitoExtension.class)
class GreetingServiceTest {

    @Mock
    private GreetingFormatter greetingFormatter;

    @InjectMocks
    private GreetingService greetingService;

    /**
     * Verifies that the service delegates to the formatter.
     */
    @Test
    void greetReturnsFormattedMessage() {
        // Arrange
        when(greetingFormatter.format("Ada")).thenReturn("Hello, Ada!");

        // Act
        String result = greetingService.greet("Ada");

        // Assert
        assertEquals("Hello, Ada!", result);
    }
}