BAEL-3941 (eugenp#9499)

vatsalgosar · web-flow · commit ef9cf2e238e5 · 2020-07-30T20:56:27.000+01:00
* BAEL-3941
- Code snippets for preserving line breaks using Jsoup while parsing HTML strings

* BAEL-3941
- swapped the order of arguments in assertEquals
diff --git a/jsoup/src/test/java/com/baeldung/jsoup/PreservingLineBreaksUnitTest.java b/jsoup/src/test/java/com/baeldung/jsoup/PreservingLineBreaksUnitTest.java
@@ -0,0 +1,39 @@
+package com.baeldung.jsoup;
+
+import org.jsoup.Jsoup;
+import org.jsoup.nodes.Document;
+import org.jsoup.safety.Whitelist;
+import org.junit.Test;
+import static org.junit.Assert.assertEquals;
+
+public class PreservingLineBreaksUnitTest {
+
+    @Test
+    public void whenBackSlashNNewLineCharacter_thenPreserveLineBreak() {
+        String strHTML = "<html><body>Hello\nworld</body></html>";
+        Document.OutputSettings outputSettings = new Document.OutputSettings();
+        outputSettings.prettyPrint(false);
+        String strWithNewLines = Jsoup.clean(strHTML, "", Whitelist.none(), outputSettings);
+        assertEquals("Hello\nworld", strWithNewLines);
+    }
+
+    @Test
+    public void whenHTMLNewLineCharacters_thenPreserveLineBreak() {
+        String strHTML = "<html><body>" +
+                "Hello" +
+                "<br>" +
+                "World" +
+                "<p>Paragraph</p>" +
+                "</body></html>";
+        Document jsoupDoc = Jsoup.parse(strHTML);
+        Document.OutputSettings outputSettings = new Document.OutputSettings();
+        outputSettings.prettyPrint(false);
+        jsoupDoc.outputSettings(outputSettings);
+        jsoupDoc.select("br").before("\\n");
+        jsoupDoc.select("p").before("\\n");
+        String str = jsoupDoc.html().replaceAll("\\\\n", "\n");
+        String strWithNewLines =
+                Jsoup.clean(str, "", Whitelist.none(), outputSettings);
+        assertEquals("Hello\nWorld\nParagraph", strWithNewLines);
+    }
+}
