From f2e7f5c2851040ff8d24a4002483b5664e205c12 Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Wed, 28 May 2025 20:05:51 +0100
Subject: Test that AlternateContent without Fallback is ignored

---
 .../zwobble/mammoth/tests/docx/OfficeXmlTests.java | 52 +++++++++++++++-------
 1 file changed, 36 insertions(+), 16 deletions(-)

(limited to 'src/test/java/org')

diff --git a/src/test/java/org/zwobble/mammoth/tests/docx/OfficeXmlTests.java b/src/test/java/org/zwobble/mammoth/tests/docx/OfficeXmlTests.java
index 01f9784..91c89f3 100644
--- a/src/test/java/org/zwobble/mammoth/tests/docx/OfficeXmlTests.java
+++ b/src/test/java/org/zwobble/mammoth/tests/docx/OfficeXmlTests.java
@@ -1,5 +1,6 @@
 package org.zwobble.mammoth.tests.docx;
 
+import org.junit.jupiter.api.Nested;
 import org.junit.jupiter.api.Test;
 import org.zwobble.mammoth.internal.docx.OfficeXml;
 import org.zwobble.mammoth.internal.xml.XmlElement;
@@ -13,22 +14,41 @@ import static org.zwobble.mammoth.internal.util.Lists.list;
 import static org.zwobble.mammoth.internal.xml.XmlNodes.element;
 
 public class OfficeXmlTests {
-    @Test
-    public void alternateContentIsReplacedByContentsOfFallback() {
-        String xmlString =
-            "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>" +
-            "<numbering xmlns:mc=\"http://schemas.openxmlformats.org/markup-compatibility/2006\">" +
-            "<mc:AlternateContent>" +
-            "<mc:Choice Requires=\"w14\">" +
-            "<choice/>" +
-            "</mc:Choice>" +
-            "<mc:Fallback>" +
-            "<fallback/>" +
-            "</mc:Fallback>" +
-            "</mc:AlternateContent>" +
-            "</numbering>";
+    @Nested
+    public class AlternateContentTests {
+        @Test
+        public void whenFallbackIsPresentThenFallbackIsRead() {
+            String xmlString =
+                "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>" +
+                "<numbering xmlns:mc=\"http://schemas.openxmlformats.org/markup-compatibility/2006\">" +
+                "<mc:AlternateContent>" +
+                "<mc:Choice Requires=\"w14\">" +
+                "<choice/>" +
+                "</mc:Choice>" +
+                "<mc:Fallback>" +
+                "<fallback/>" +
+                "</mc:Fallback>" +
+                "</mc:AlternateContent>" +
+                "</numbering>";
 
-        XmlElement result = OfficeXml.parseXml(new ByteArrayInputStream(xmlString.getBytes(StandardCharsets.UTF_8)));
-        assertThat(result.getChildren(), deepEquals(list(element("fallback"))));
+            XmlElement result = OfficeXml.parseXml(new ByteArrayInputStream(xmlString.getBytes(StandardCharsets.UTF_8)));
+            assertThat(result.getChildren(), deepEquals(list(element("fallback"))));
+        }
+
+        @Test
+        public void whenFallbackIsNotPresentThenElementIsIgnored() {
+            String xmlString =
+                "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>" +
+                "<numbering xmlns:mc=\"http://schemas.openxmlformats.org/markup-compatibility/2006\">" +
+                "<mc:AlternateContent>" +
+                "<mc:Choice Requires=\"w14\">" +
+                "<choice/>" +
+                "</mc:Choice>" +
+                "</mc:AlternateContent>" +
+                "</numbering>";
+
+            XmlElement result = OfficeXml.parseXml(new ByteArrayInputStream(xmlString.getBytes(StandardCharsets.UTF_8)));
+            assertThat(result.getChildren(), deepEquals(list()));
+        }
     }
 }
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