src/test/java/RadioTest.java - main - kellervi/JavaOOP2

src/test/java/RadioTest.java
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17 май 2026, 21:57
17 май 2026, 21:579a1677f
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;

public class RadioTest {
    // по станции

    @Test

    public void nextStationFromLastToFirst() {
        Radio radio = new Radio();

        radio.setCurrentStation(9);
        radio.next();

        int expected = 0;
        int actual = radio.getCurrentStation();

        Assertions.assertEquals(expected, actual);
    }

    @Test

    public void nextStationFromMiddle() {
        Radio radio = new Radio();

        radio.setCurrentStation(5);
        radio.next();

        int expected = 6;
        int actual = radio.getCurrentStation();

        Assertions.assertEquals(expected, actual);
    }

    @Test

    public void prevStationFromMiddle() {
        Radio radio = new Radio();

        radio.setCurrentStation(5);
        radio.prev();

        int expected = 4;
        int actual = radio.getCurrentStation();

        Assertions.assertEquals(expected, actual);
    }

    @Test

    public void prevStationFromFirstToLast() {
        Radio radio = new Radio();

        radio.setCurrentStation(0);
        radio.prev();

        int expected = 9;
        int actual = radio.getCurrentStation();

        Assertions.assertEquals(expected, actual);
    }

    @Test

    public void setValidStation() {
        Radio radio = new Radio();
        radio.setCurrentStation(7);

        int expected = 7;
        int actual = radio.getCurrentStation();

        Assertions.assertEquals(expected, actual);
    }

    @Test

    public void setInvalidStationBelowZero() {
        Radio radio = new Radio();
        radio.setCurrentStation(-1);

        int expected = 0;
        int actual = radio.getCurrentStation();

        Assertions.assertEquals(expected, actual);
    }

    @Test
    public void setInvalidStationAboveNine() {
        Radio radio = new Radio();
        radio.setCurrentStation(10);

        int expected = 0;
        int actual = radio.getCurrentStation();

        Assertions.assertEquals(expected, actual);
    }

    //по звуку

    @Test

    public void shouldIncreaseVolume() {
        Radio radio = new Radio();
        radio.increaseVolume();
        radio.increaseVolume();

        int expected = 2;
        int actual = radio.getCurrentVolume();

        Assertions.assertEquals(expected, actual);
    }

    @Test

    public void setInvalidVolumeBelowZero() {
        Radio radio = new Radio();
        radio.increaseVolume();
        radio.decreaseVolume();

        int expected = 0;
        int actual = radio.getCurrentVolume();

        Assertions.assertEquals(expected, actual);
    }

    @Test
    public void setInvalidVolumeAboveHundred() {
        Radio radio = new Radio();
        for (int i = 0; i < 101; i++) {
            radio.increaseVolume();
        }

        int expected = 100;
        int actual = radio.getCurrentVolume();

        Assertions.assertEquals(expected, actual);
    }

    @Test
    public void shouldDecreaseVolumeWhenAboveZero() {
        Radio radio = new Radio();
        radio.increaseVolume();
        radio.decreaseVolume();

        int expected = 0;
        int actual = radio.getCurrentVolume();

        Assertions.assertEquals(expected, actual);
    }

    @Test
    public void shouldNotDecreaseVolumeWhenAtZero() {
        Radio radio = new Radio();

        radio.decreaseVolume();

        int expected = 0;
        int actual = radio.getCurrentVolume();

        Assertions.assertEquals(expected, actual);
    }

}