Add tests for nested namespaces

src/test/java/com/datasonnet/XMLReaderTest.java

@@ -76,6 +76,11 @@ void testXMLReaderExt() throws Exception {
         JSONAssert.assertEquals(expectedJson, mappedJson, true);
     }
 
+    @Test
+    void nestedNamespaces() throws Exception {
+        mapAndAssert("xmlNestedNamespaces.xml", "xmlNestedNamespaces.json");
+    }
+
     @Test
     void testMixedContent() throws Exception {
         mapAndAssert("xmlMixedContent.xml", "xmlMixedContent.json");

src/test/java/com/datasonnet/XMLWriterTest.java

@@ -238,8 +238,6 @@ void testFlattenMixedContentWithNamespaces() throws Exception {
         assertEquals(expected, mapped, "Expected " + expected + " but got " + mapped);
     }
 
-
-
     @Test
     void testXMLRoot() throws Exception {
         String jsonData = TestResourceReader.readFileAsString("xmlRoot.json");
@@ -266,4 +264,15 @@ void testXMLRoot() throws Exception {
             fail("This transformation should not fail");
         }
     }
+
+    @Test
+    void testNestedNamespaces() throws Exception {
+        String jsonData = TestResourceReader.readFileAsString("xmlNestedNamespaces.json");
+        String expectedXml = TestResourceReader.readFileAsString("xmlNestedNamespaces.xml");
+
+        Mapper mapper = new Mapper("payload");
+
+        String mappedXml = mapper.transform(new DefaultDocument<String>(jsonData, MediaTypes.APPLICATION_JSON), Collections.emptyMap(), MediaTypes.APPLICATION_XML).getContent();
+        assertThat(mappedXml, CompareMatcher.isSimilarTo(expectedXml).ignoreWhitespace());
+    }
 }

src/test/resources/xmlNestedNamespaces.json

@@ -0,0 +1,21 @@
+{
+  "a": {
+    "@xmlns": {
+      "$":"https://example.org"
+    },
+    "b:b": {
+      "@xmlns": {
+        "b":"https://example.com"
+      },
+      "b:c": {
+        "@xmlns": {
+          "c":"https://example.net"
+        },
+        "@c:d":"orange",
+        "c:e": {
+          "$":"nested","~":1
+        }, "~":1
+      }, "~":1
+    }, "~":1
+  }
+}

src/test/resources/xmlNestedNamespaces.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<a xmlns="https://example.org">
+    <b:b xmlns:b="https://example.com">
+        <b:c c:d="orange" xmlns:c="https://example.net">
+            <c:e>nested</c:e>
+        </b:c>
+    </b:b>
+</a>