ZeroWidthStringBoundsTest.java

/*
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/*
 * @test
 * @bug 8245159 8239725
 * @summary Ensure no exception getting bounds of an empty string when the font has
 * layout attributes.
 * @run main/othervm ZeroWidthStringBoundsTest
 */

import java.awt.Font;
import java.awt.font.FontRenderContext;
import java.awt.font.TextAttribute;
import java.text.AttributedCharacterIterator;
import java.util.HashMap;

public class ZeroWidthStringBoundsTest {

   public static void main(String[] args) {
       FontRenderContext frc = new FontRenderContext(null, false, false);
       Font f1 = new Font(Font.MONOSPACED, Font.PLAIN, 12);
       f1.getStringBounds("", frc);
       HashMap<AttributedCharacterIterator.Attribute, Object> attrs = new HashMap<>();
       attrs.put(TextAttribute.KERNING, TextAttribute.KERNING_ON);
       Font f2 = f1.deriveFont(attrs);
       f2.getStringBounds("", frc);
   }
}