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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
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package javafx.scene.control.skin;

import static org.junit.Assert.assertEquals;

import javafx.beans.value.ObservableValue;
import javafx.geometry.Orientation;
import javafx.scene.control.ScrollBar;

import javafx.scene.control.skin.ScrollBarSkin;
import org.junit.Before;
import org.junit.Test;

/**
 */
public class ScrollBarSkinTest {
    private ScrollBar scrollbar;
    private ScrollBarSkinMock skin;

    @Before public void setup() {
        scrollbar = new ScrollBar();
        skin = new ScrollBarSkinMock(scrollbar);
        scrollbar.setSkin(skin);
    }

    @Test public void onVerticalMaxWidthTracksPreferred() {        
        scrollbar.setOrientation(Orientation.VERTICAL);
        scrollbar.setPrefWidth(100);
        assertEquals(100, scrollbar.maxWidth(-1), 0);
    }

    @Test public void onHorizontalMaxHeightTracksPreferred() {
        scrollbar.setOrientation(Orientation.HORIZONTAL);
        scrollbar.setPrefHeight(100);
        assertEquals(100, scrollbar.maxHeight(-1), 0);
    }
    
    public static final class ScrollBarSkinMock extends ScrollBarSkin {
        boolean propertyChanged = false;
        int propertyChangeCount = 0;
        public ScrollBarSkinMock(ScrollBar scrollbar) {
            super(scrollbar);
        }

        public void addWatchedProperty(ObservableValue<?> p) {
            p.addListener(o -> {
                propertyChanged = true;
                propertyChangeCount++;
            });
        }
    }
}