src/test/java/org/example/PhoneBookTest.java - master - itokar98/HomeWorkTddDddTask1

src/test/java/org/example/PhoneBookTest.java
62 строки2 KB
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fix package
09 дек 2025, 19:40
09 дек 2025, 19:402694398
package org.example;

import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.*;
import java.io.ByteArrayOutputStream;
import java.io.PrintStream;

class PhoneBookTest {

    @Test
    void add_ShouldReturnCorrectCount_WhenAddingContacts() {
        PhoneBook phoneBook = new PhoneBook();
        assertEquals(1, phoneBook.add("Alice", "12345"));
        assertEquals(2, phoneBook.add("Bob", "67890"));
    }

    @Test
    void findByNumber_ShouldReturnName_WhenNumberExists() {
        PhoneBook phoneBook = new PhoneBook();
        phoneBook.add("Alice", "12345");
        assertEquals("Alice", phoneBook.findByNumber("12345"));
    }

    @Test
    void findByNumber_ShouldReturnNull_WhenNumberDoesNotExist() {
        PhoneBook phoneBook = new PhoneBook();
        assertNull(phoneBook.findByNumber("99999"));
    }

    @Test
    void findByName_ShouldReturnNumber_WhenNameExists() {
        PhoneBook phoneBook = new PhoneBook();
        phoneBook.add("Alice", "12345");
        assertEquals("12345", phoneBook.findByName("Alice"));
    }

    @Test
    void findByName_ShouldReturnNull_WhenNameDoesNotExist() {
        PhoneBook phoneBook = new PhoneBook();
        assertNull(phoneBook.findByName("Charlie"));
    }

    @Test
    void printAllNames_ShouldPrintNamesInAlphabeticalOrder() {
        PhoneBook phoneBook = new PhoneBook();
        phoneBook.add("Charlie", "11111");
        phoneBook.add("Alice", "22222");
        phoneBook.add("Bob", "33333");

        // Capture System.out output
        ByteArrayOutputStream outContent = new ByteArrayOutputStream();
        PrintStream originalOut = System.out;
        System.setOut(new PrintStream(outContent));

        try {
            phoneBook.printAllNames();
            assertEquals("Alice, Bob, Charlie", outContent.toString().trim());
        } finally {
            System.setOut(originalOut);
        }
    }
}