UnitTest for #534: Justified Text not supporting RTL

- UnitTest added

openpdf/src/test/java/com/lowagie/text/pdf/LayoutProcessor534Test.java

@@ -0,0 +1,47 @@
+package com.lowagie.text.pdf;
+
+import com.lowagie.text.Chunk;
+import com.lowagie.text.Document;
+import com.lowagie.text.Element;
+import com.lowagie.text.PageSize;
+import com.lowagie.text.Paragraph;
+import com.lowagie.text.pdf.parser.PdfTextExtractor;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import org.assertj.core.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+class LayoutProcessor534Test {
+
+    @Test
+    public void whenLayoutRightToLeft_thenRevertCharOrder() throws IOException {
+        // given
+        Document document = new Document(PageSize.A4.rotate(), 10, 10, 10, 10);
+        ByteArrayOutputStream pdfOut = new ByteArrayOutputStream();
+        PdfWriter.getInstance(document, pdfOut);
+        document.open();
+        // when
+        LayoutProcessor.enable(java.awt.Font.LAYOUT_RIGHT_TO_LEFT);
+        String text = "one two three four five six seven eight nine ten eleven twelve thirteen fourteen fifteen "
+            + "sixteen seventeen eighteen nineteen twenty twentyεOne twentyTwo twentyThree twentyFour twentyFive "
+            + "twentySix twentySeven twentyEight twentyNine thirty ";
+        text = text + text;
+
+        Paragraph paragraph = new Paragraph(new Chunk(text));
+        paragraph.setAlignment(Element.ALIGN_JUSTIFIED);
+        document.add(paragraph);
+        document.close();
+
+        // then
+        PdfTextExtractor extractor = new PdfTextExtractor(new PdfReader(pdfOut.toByteArray()));
+        Assertions.assertThat(extractor.getTextFromPage(1))
+            .isEqualTo("owTytnewt enOεytnewt ytnewt neetenin neethgie neetneves neetxis neetfif neetruof neetriht "
+                + "evlewt nevele net enin thgie neves xis evif ruof eerht owt eno\n"
+                + " evlewt nevele net enin thgie neves xis evif ruof eerht owt eno ytriht eniNytnewt thgiEytnewt "
+                + "neveSytnewt xiSytnewt eviFytnewt ruoFytnewt eerhTytnewt\n"
+                + " neveSytnewt xiSytnewt eviFytnewt ruoFytnewt eerhTytnewt owTytnewt enOεytnewt ytnewt neetenin n"
+                + "eethgie neetneves neetxis neetfif neetruof neetriht\n"
+                + " ytriht eniNytnewt thgiEytnewt");
+    }
+
+}