JRE-9: added regression test

(cherry picked from commit 4ffb665)
(cherry picked from commit 00a29ad129)

test/jdk/jb/javax/swing/JEditorPane/LargeQuickDoc.java

@@ -0,0 +1,63 @@
+/*
+ * Copyright 2000-2016 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import javax.swing.JEditorPane;
+import javax.swing.JFrame;
+import javax.swing.JScrollPane;
+import javax.swing.SwingUtilities;
+import javax.swing.text.html.HTMLEditorKit;
+import java.io.IOException;
+import java.nio.file.FileSystems;
+import java.nio.file.Files;
+
+/* @test
+ * @bug 8151725
+ * @summary regression test on JRE-9
+ */
+
+public class LargeQuickDoc {
+
+    static private String getText() throws IOException {
+        return new String(
+                Files.readAllBytes(
+                        FileSystems.getDefault().getPath(
+                                System.getProperty("test.src", "."), "LargeQuickDoc.txt")));
+    }
+
+
+    public static void main(String[] args) throws Exception {
+        SwingUtilities.invokeAndWait(() -> {
+
+            JFrame f = new JFrame();
+            JEditorPane editorPane = new javax.swing.JEditorPane("text/html", "");
+            editorPane.setEditorKit(new HTMLEditorKit());
+            editorPane.setEditable(false);
+
+            JScrollPane scrollPane = new JScrollPane(editorPane);
+            scrollPane.setBorder(null);
+
+            try {
+                editorPane.setText(getText());
+            } catch (IOException | ArrayIndexOutOfBoundsException e) {
+                throw new RuntimeException(e);
+            }
+
+            f.getContentPane().add(scrollPane);
+            f.setSize(500, 500);
+            f.setVisible(true);
+        });
+    }
+}