Add one more fuzz test wrt UTF-32 decoding (wrt woodstox-core/125 issue)

Author: cowtowncoder

src/test/java/com/fasterxml/jackson/dataformat/xml/fuzz/FuzzXXX_32969_UTF32Test.java

@@ -0,0 +1,28 @@
+package com.fasterxml.jackson.dataformat.xml.fuzz;
+
+import com.fasterxml.jackson.core.exc.StreamReadException;
+import com.fasterxml.jackson.dataformat.xml.XmlMapper;
+import com.fasterxml.jackson.dataformat.xml.XmlTestBase;
+
+// [dataformat-xml#???]
+// (but root cause of https://github.com/FasterXML/woodstox/issues/125)
+//
+// NOTE! Not reproducible for some reason with these settings (probably
+// has different buffer sizes or... something
+public class FuzzXXX_32969_UTF32Test extends XmlTestBase
+{
+    private final XmlMapper MAPPER = newMapper();
+
+    public void testUTF32() throws Exception
+    {
+        final byte[] doc = readResource("/data/fuzz-32906.xml");
+        try {
+            MAPPER.readTree(doc, 0, doc.length);
+            fail("Should not pass");
+        } catch (StreamReadException e) {
+            verifyException(e, "Unexpected EOF in CDATA");
+        } catch (RuntimeException e) {
+            fail("Should fail with specific `StreamReadException` but got: "+e);
+        }
+    }
+}