test/jdk/java/awt/font/MonospacedGlyphWidth/MonospacedGlyphWidthTest.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * published by the Free Software Foundation.
 *
 * 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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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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/* @test
 * @bug 8073400
 * @summary Some Monospaced logical fonts have a different width
 * @author Dmitry Markov
 * @run main MonospacedGlyphWidthTest
 */
import java.awt.*;
import java.awt.font.FontRenderContext;

public class MonospacedGlyphWidthTest {
    private static final int START_INDEX = 0x2018;
    private static final int END_INDEX = 0x201F;

    public static void main(String[] args) {
        Font font = new Font(Font.MONOSPACED, Font.PLAIN, 12);
        double width = getCharWidth(font, 'a');

        for (int i = START_INDEX; i <= END_INDEX; i++) {
            if (width != getCharWidth(font, (char)i)) {
                throw new RuntimeException("Test Failed: characters have different width!");
            }
        }
        System.out.println("Test Passed!");
    }

    private static double getCharWidth(Font font, char c) {
        FontRenderContext fontRenderContext = new FontRenderContext(null, false, false);
        return font.getStringBounds(new char[] {c}, 0, 1, fontRenderContext).getWidth();
    }
}