[C++] Check for specialised null value when generated enum. PR aeron-io#889.

Author: mjpt777

sbe-tool/src/test/cpp/CMakeLists.txt

@@ -34,19 +34,26 @@ endfunction()
 find_package(Java REQUIRED)
 
 set(CODE_GENERATION_SCHEMA ${CODEC_SCHEMA_DIR}/code-generation-schema.xml)
+set(COMPOSITE_ELEMENTS_SCHEMA ${CODEC_SCHEMA_DIR}/composite-elements-schema.xml)
 set(COMPOSITE_OFFSETS_SCHEMA ${CODEC_SCHEMA_DIR}/composite-offsets-schema.xml)
 set(MESSAGE_BLOCK_LENGTH_TEST ${CODEC_SCHEMA_DIR}/message-block-length-test.xml)
 set(GROUP_WITH_DATA_SCHEMA ${CODEC_SCHEMA_DIR}/group-with-data-schema.xml)
-set(COMPOSITE_ELEMENTS_SCHEMA ${CODEC_SCHEMA_DIR}/composite-elements-schema.xml)
 set(ISSUE835_SCHEMA ${CODEC_SCHEMA_DIR}/issue835.xml)
+set(ISSUE889_SCHEMA ${CODEC_SCHEMA_DIR}/issue889.xml)
 
 set(GENERATED_CODECS
  ${CXX_CODEC_TARGET_DIR}
 )
 
 add_custom_command(
  OUTPUT ${GENERATED_CODECS}
- DEPENDS ${CODE_GENERATION_SCHEMA} ${CODE_GENERATION_SCHEMA_CPP} ${COMPOSITE_OFFSETS_SCHEMA} ${MESSAGE_BLOCK_LENGTH_TEST}
+ DEPENDS ${CODE_GENERATION_SCHEMA}
+ ${COMPOSITE_ELEMENTS_SCHEMA}
+ ${COMPOSITE_OFFSETS_SCHEMA}
+ ${MESSAGE_BLOCK_LENGTH_TEST}
+ ${GROUP_WITH_DATA_SCHEMA}
+ ${ISSUE835_SCHEMA}
+ ${ISSUE889_SCHEMA}
  sbe-jar ${SBE_JAR}
  COMMAND
  ${Java_JAVA_EXECUTABLE}
@@ -60,6 +67,7 @@ add_custom_command(
  ${GROUP_WITH_DATA_SCHEMA}
  ${COMPOSITE_ELEMENTS_SCHEMA}
  ${ISSUE835_SCHEMA}
+ ${ISSUE889_SCHEMA}
 )
 
 add_custom_target(codecs DEPENDS ${GENERATED_CODECS})
@@ -74,3 +82,4 @@ sbe_test(GroupWithDataTest codecs)
 sbe_test(Rc3OtfFullIrTest codecs)
 sbe_test(CompositeElementsTest codecs)
 sbe_test(Issue835Test codecs)
+sbe_test(Issue889Test codecs)

sbe-tool/src/test/cpp/Issue889Test.cpp

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2013-2022 Real Logic Limited.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "gtest/gtest.h"
+#include "issue889/LotType.h"
+
+using namespace issue889;
+
+class Issue889Test : public testing::Test
+{
+};
+
+TEST_F(Issue889Test, shouldGenerateSpecalisedNullValue)
+{
+ EXPECT_EQ(LotType::get(0), LotType::NULL_VALUE);
+}