1 files changed, 14 insertions, 0 deletions
diff --git a/sonar-core/src/test/java/org/sonar/core/util/ProtobufJsonFormatTest.java b/sonar-core/src/test/java/org/sonar/core/util/ProtobufJsonFormatTest.java
index ee036208c9e..d81033e5fd8 100644
--- a/sonar-core/src/test/java/org/sonar/core/util/ProtobufJsonFormatTest.java
+++ b/sonar-core/src/test/java/org/sonar/core/util/ProtobufJsonFormatTest.java
@@ -66,4 +66,18 @@ public class ProtobufJsonFormatTest {
 
     ProtobufJsonFormat.write(protobuf, JsonWriter.of(new StringWriter()));
   }
+
+  @Test
+  public void protobuf_empty_strings_are_not_output() throws Exception {
+    org.sonar.core.test.Test.Fake protobuf = org.sonar.core.test.Test.Fake.newBuilder().build();
+
+    // field is not set but value is "", not null
+    assertThat(protobuf.hasAString()).isFalse();
+    assertThat(protobuf.getAString()).isEqualTo("");
+
+    StringWriter json = new StringWriter();
+    JsonWriter jsonWriter = JsonWriter.of(json);
+    ProtobufJsonFormat.write(protobuf, jsonWriter);
+    assertThat(json.toString()).isEqualTo("{}");
+  }
 }