oneOf fix for JsonFormat includingDefaultValueFields

1 files changed, 17 insertions, 0 deletions

diff --git a/java/util/src/test/java/com/google/protobuf/util/JsonFormatTest.java b/java/util/src/test/java/com/google/protobuf/util/JsonFormatTest.java
index 32739d44..823ed971 100644
--- a/java/util/src/test/java/com/google/protobuf/util/JsonFormatTest.java
+++ b/java/util/src/test/java/com/google/protobuf/util/JsonFormatTest.java
@@ -1261,6 +1261,23 @@ public class JsonFormatTest extends TestCase {
             + "  }\n"
             + "}",
         JsonFormat.printer().includingDefaultValueFields().print(mapMessage));
+
+    TestOneof oneofMessage = TestOneof.getDefaultInstance();
+    assertEquals("{\n}", JsonFormat.printer().print(oneofMessage));
+    assertEquals("{\n}", JsonFormat.printer().includingDefaultValueFields().print(oneofMessage));
+
+    oneofMessage = TestOneof.newBuilder().setOneofInt32(42).build();
+    assertEquals("{\n  \"oneofInt32\": 42\n}",
+        JsonFormat.printer().print(oneofMessage));
+    assertEquals("{\n  \"oneofInt32\": 42\n}",
+        JsonFormat.printer().includingDefaultValueFields().print(oneofMessage));
+
+    TestOneof.Builder oneofBuilder = TestOneof.newBuilder();
+    mergeFromJson("{\n" + "  \"oneofNullValue\": null \n" + "}", oneofBuilder);
+    oneofMessage = oneofBuilder.build();
+    assertEquals("{\n  \"oneofNullValue\": null\n}", JsonFormat.printer().print(oneofMessage));
+    assertEquals("{\n  \"oneofNullValue\": null\n}",
+        JsonFormat.printer().includingDefaultValueFields().print(oneofMessage));
   }
 
   public void testPreservingProtoFieldNames() throws Exception {