BufferedImageIconTest.java

/*
 * Copyright (c) 2026, Harald Kuhr
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 *
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package com.twelvemonkeys.image;

import org.junit.jupiter.api.Test;

import java.awt.image.BufferedImage;

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


/**
 * BufferedImageIconTest
 */
class BufferedImageIconTest {

    private final BufferedImage testImage = new BufferedImage(10, 20, BufferedImage.TYPE_INT_ARGB);

    @Test
    void testConstructorNullImage() {
        assertThrows(NullPointerException.class, () -> new BufferedImageIcon(null));
    }

    @Test
    void testConstructorDefault() {
        BufferedImageIcon icon = new BufferedImageIcon(testImage);
        assertEquals(10, icon.getIconWidth());
        assertEquals(20, icon.getIconHeight());
    }

    @Test
    void testConstructorCustomSize() {
        BufferedImageIcon icon = new BufferedImageIcon(testImage, 30, 40);
        assertEquals(30, icon.getIconWidth());
        assertEquals(40, icon.getIconHeight());
    }

    @Test
    void testConstructorIllegalSize() {
        assertThrows(IllegalArgumentException.class, () -> new BufferedImageIcon(testImage, 0, 40));
        assertThrows(IllegalArgumentException.class, () -> new BufferedImageIcon(testImage, 30, 0));
        assertThrows(IllegalArgumentException.class, () -> new BufferedImageIcon(testImage, -1, 40));
        assertThrows(IllegalArgumentException.class, () -> new BufferedImageIcon(testImage, 30, -1));
    }
}