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

Author: mjpt777

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

@@ -35,21 +35,23 @@ find_package(Java REQUIRED)
 
 set(CODE_GENERATION_SCHEMA ${CODEC_SCHEMA_DIR}/code-generation-schema.xml)
 set(GROUP_WITH_DATA_SCHEMA ${CODEC_SCHEMA_DIR}/group-with-data-schema.xml)
+set(ISSUE889_SCHEMA ${CODEC_SCHEMA_DIR}/issue889.xml)
 
 set(GENERATED_CODECS
  ${C_CODEC_TARGET_DIR}
 )
 
 add_custom_command(
  OUTPUT ${GENERATED_CODECS}
- DEPENDS sbe-jar ${SBE_JAR} ${CODE_GENERATION_SCHEMA} ${GROUP_WITH_DATA_SCHEMA}
+ DEPENDS sbe-jar ${SBE_JAR} ${CODE_GENERATION_SCHEMA} ${GROUP_WITH_DATA_SCHEMA} ${ISSUE889_SCHEMA}
  COMMAND
  ${Java_JAVA_EXECUTABLE}
  -Dsbe.output.dir=${C_CODEC_TARGET_DIR}
  -Dsbe.target.language="C"
  -jar ${SBE_JAR}
  ${CODE_GENERATION_SCHEMA}
  ${GROUP_WITH_DATA_SCHEMA}
+ ${ISSUE889_SCHEMA}
 )
 
 add_custom_target(c_codecs DEPENDS ${GENERATED_CODECS})
@@ -58,6 +60,7 @@ add_custom_target(c_codecs DEPENDS ${GENERATED_CODECS})
 sbe_test(BoundsCheckTest c_codecs)
 sbe_test(CodeGenTest c_codecs)
 sbe_test(GroupWithDataTest c_codecs)
+sbe_test(Issue889Test c_codecs)
 
 # Compile a dummy C source to test C compliance of generated headers.
 add_executable(CComplianceTest CComplianceTest.c)

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

@@ -0,0 +1,31 @@
+/*
+ * 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"
+
+class Issue889Test : public testing::Test
+{
+};
+
+TEST_F(Issue889Test, shouldGenerateSpecalisedNullValue)
+{
+ issue889_lotType lot_type;
+
+ EXPECT_TRUE(issue889_lotType_get(0, &lot_type));
+ EXPECT_EQ(lot_type, issue889_lotType::issue889_lotType_NULL_VALUE);
+}

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

@@ -14,7 +14,8 @@
  * limitations under the License.
  */
 
-#include "gtest/gtest.h"
+#include <gtest/gtest.h>
+
 #include "issue889/LotType.h"
 
 using namespace issue889;