Fix some Avro fails

Author: cowtowncoder

avro/src/test/java/tools/jackson/dataformat/avro/ArrayTest.java

@@ -16,7 +16,11 @@
 
 public class ArrayTest extends AvroTestBase
 {
-    private final AvroMapper MAPPER = getMapper();
+    // 30-Jan-2025, tatu: With 3.0 and `DeserializationFeature.FAIL_ON_TRAILING_TOKENS`
+    //  default, need to turn it off for this test.
+    private final AvroMapper MAPPER = mapperBuilder()
+            .disable(DeserializationFeature.FAIL_ON_TRAILING_TOKENS)
+            .build();
 
     // Simple test for a single array
     @Test

avro/src/test/java/tools/jackson/dataformat/avro/AvroTestBase.java

@@ -305,6 +305,10 @@ protected static AvroMapper newMapper() {
         return new AvroMapper();
     }
 
+    protected static AvroMapper.Builder mapperBuilder() {
+        return AvroMapper.builder();
+    }
+
     protected static AvroMapper newApacheMapper() {
         return new AvroMapper(AvroFactory.builderWithApacheDecoder().build());
     }

avro/src/test/java/tools/jackson/dataformat/avro/RootEmptyRecord177Test.java

@@ -14,7 +14,7 @@ public class RootEmptyRecord177Test extends AvroTestBase
 "{'type':'record', 'name':'Empty','namespace':'something','fields':[]}");
 
     @JsonAutoDetect // just a marker to avoid "no properties found" exception
-    static final class Empty {
+    public static final class Empty {
         @Override
         public boolean equals(Object o) {
             return o instanceof Empty;