BAEL-5644-escape-html-java (#14492)

spring-core-4/src/test/java/com/baeldung/escapehtml/HtmlEscapeUnitTest.java

@@ -0,0 +1,43 @@
+package com.baeldung.escapehtml;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class HtmlEscapeUnitTest {
+
+    @Test
+    public void whenInputContainAmpersand_thenEscape() {
+        String input = "AT&T";
+        String expected = "AT&T";
+        assertEquals(expected, HtmlEscapeUtils.escapeWithApacheCommons(input));
+        assertEquals(expected, HtmlEscapeUtils.escapeWithGuava(input));
+        assertEquals(expected, HtmlEscapeUtils.escapeWithSpring(input));
+    }
+
+    @Test
+    public void whenInputContainDoubleQuotes_thenEscape() {
+        String input = "She said, \"Hello!\"";
+        String expected = "She said, "Hello!"";
+        assertEquals(expected, HtmlEscapeUtils.escapeWithApacheCommons(input));
+        assertEquals(expected, HtmlEscapeUtils.escapeWithGuava(input));
+        assertEquals(expected, HtmlEscapeUtils.escapeWithSpring(input));
+    }
+
+    @Test
+    public void whenInputContainManyHtmlSymbols_thenEscape() {
+        String input = "<p>This is a <strong>test</strong> string.</p>";
+        String expected = "&lt;p&gt;This is a &lt;strong&gt;test&lt;/strong&gt; string.&lt;/p&gt;";
+        assertEquals(expected, HtmlEscapeUtils.escapeWithApacheCommons(input));
+        assertEquals(expected, HtmlEscapeUtils.escapeWithGuava(input));
+        assertEquals(expected, HtmlEscapeUtils.escapeWithSpring(input));
+    }
+
+    @Test
+    public void whenInputContainNoHtmlSymbols_thenEscape() {
+        String input = "This is a plain text.";
+        assertEquals(input, HtmlEscapeUtils.escapeWithApacheCommons(input));
+        assertEquals(input, HtmlEscapeUtils.escapeWithGuava(input));
+        assertEquals(input, HtmlEscapeUtils.escapeWithSpring(input));
+    }
+}