src/test/java/coursework/FigureTest.java - main - Miklukho/java-coursework-def

src/test/java/coursework/FigureTest.java

73 строки2 KB

Miklukho

Initial commit: курсовая работа вариант 21, фигура def

20 май 2026, 13:25

20 май 2026, 13:253a867f0

package coursework;

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.*;

class FigureTest {

    private Figure figure;

    @BeforeEach
    void setUp() {
        figure = new ArcFigure(
                "def",
                5.0, 0.0, 10.0, 8.0,
                38.73,
                7.5, 3.609, 4.391
        );
    }

    @Test
    void testPointInsideFigure() {
        assertTrue(figure.isPointInside(7.5, 2.0));
    }

    @Test
    void testPointOutsideFigure() {
        assertFalse(figure.isPointInside(3.0, 2.0));
        assertFalse(figure.isPointInside(7.5, 8.5));
    }

    @Test
    void testBoundingBoxArea() {
        double expectedArea = (10.0 - 5.0) * (8.0 - 0.0);
        assertEquals(expectedArea, figure.getBoundingBoxArea(), 0.001);
    }

    @Test
    void testExactArea() {
        assertEquals(38.73, figure.getExactArea(), 0.001);
    }

    @Test
    void testCompareTo() {
        Figure figure1 = new ArcFigure("test1", 0, 0, 10, 10, 50.0, 5, 5, 5);
        Figure figure2 = new ArcFigure("test2", 0, 0, 10, 10, 100.0, 5, 5, 5);

        assertTrue(figure1.compareTo(figure2) < 0);
        assertTrue(figure2.compareTo(figure1) > 0);
        assertEquals(0, figure1.compareTo(figure1));
    }

    @Test
    void testMonteCarloAccuracy() {
        int n = 1_000_000;
        int hits = 0;
        double boxArea = figure.getBoundingBoxArea();

        for (int i = 0; i < n; i++) {
            double x = figure.minX + Math.random() * (figure.maxX - figure.minX);
            double y = figure.minY + Math.random() * (figure.maxY - figure.minY);
            if (figure.isPointInside(x, y)) hits++;
        }

        double mcArea = (hits / (double) n) * boxArea;
        double error = Math.abs(mcArea - figure.getExactArea()) / figure.getExactArea() * 100;

        System.out.println("Monte Carlo Area: " + mcArea);
        System.out.println("Error: " + error + "%");

        assertTrue(error < 5.0, "Погрешность должна быть меньше 5%");
    }
}