Mock system calls in rcutils API implementation.

Signed-off-by: Michel Hidalgo <[email protected]>

Author: hidmic

CMakeLists.txt

@@ -181,7 +181,7 @@ if(BUILD_TESTING)
     osrf_testing_tools_cpp::memory_tools LIBRARY_PRELOAD_ENVIRONMENT_IS_AVAILABLE)
 
   ament_add_gtest(test_logging test/test_logging.cpp)
-  target_link_libraries(test_logging ${PROJECT_NAME} osrf_testing_tools_cpp::memory_tools)
+  target_link_libraries(test_logging ${PROJECT_NAME} mimick osrf_testing_tools_cpp::memory_tools)
 
   add_executable(test_logging_long_messages test/test_logging_long_messages.cpp)
   target_link_libraries(test_logging_long_messages ${PROJECT_NAME})
@@ -234,7 +234,7 @@ if(BUILD_TESTING)
     test/test_char_array.cpp
   )
   if(TARGET test_char_array)
-    target_link_libraries(test_char_array ${PROJECT_NAME})
+    target_link_libraries(test_char_array ${PROJECT_NAME} mimick)
   endif()
 
   # Can't use C++ with stdatomic_helper.h
@@ -275,7 +275,7 @@ if(BUILD_TESTING)
     test/test_split.cpp
   )
   if(TARGET test_split)
-    target_link_libraries(test_split ${PROJECT_NAME})
+    target_link_libraries(test_split ${PROJECT_NAME} mimick)
   endif()
 
   rcutils_custom_add_gtest(test_find
@@ -322,7 +322,7 @@ if(BUILD_TESTING)
   )
   if(TARGET test_filesystem)
     ament_target_dependencies(test_filesystem "osrf_testing_tools_cpp")
-    target_link_libraries(test_filesystem ${PROJECT_NAME})
+    target_link_libraries(test_filesystem ${PROJECT_NAME} mimick)
     target_compile_definitions(test_filesystem PRIVATE BUILD_DIR="${CMAKE_CURRENT_BINARY_DIR}")
   endif()
 
@@ -337,7 +337,7 @@ if(BUILD_TESTING)
     test/test_format_string.cpp
   )
   if(TARGET test_format_string)
-    target_link_libraries(test_format_string ${PROJECT_NAME})
+    target_link_libraries(test_format_string ${PROJECT_NAME} mimick)
   endif()
 
   rcutils_custom_add_gtest(test_string_map
@@ -375,14 +375,14 @@ if(BUILD_TESTING)
       # which is appropriate when building the dll but not consuming it.
       target_compile_definitions(dummy_shared_library PRIVATE "DUMMY_SHARED_LIBRARY_BUILDING_DLL")
     endif()
-    target_link_libraries(test_shared_library ${PROJECT_NAME})
+    target_link_libraries(test_shared_library ${PROJECT_NAME} mimick)
   endif()
 
   rcutils_custom_add_gtest(test_time
     test/test_time.cpp
     ENV ${memory_tools_test_env_vars})
   if(TARGET test_time)
-    target_link_libraries(test_time ${PROJECT_NAME} osrf_testing_tools_cpp::memory_tools)
+    target_link_libraries(test_time ${PROJECT_NAME} mimick osrf_testing_tools_cpp::memory_tools)
   endif()
 
   rcutils_custom_add_gtest(test_snprintf
@@ -436,7 +436,7 @@ if(BUILD_TESTING)
       RCUTILS_COLORIZED_OUTPUT=1
   )
   if(TARGET test_logging_custom_env)
-    target_link_libraries(test_logging_custom_env ${PROJECT_NAME} osrf_testing_tools_cpp::memory_tools)
+    target_link_libraries(test_logging_custom_env ${PROJECT_NAME} osrf_testing_tools_cpp::memory_tools mimick)
   endif()
 
   # RCUTILS_LOGGING_MAX_OUTPUT_FORMAT_LEN is defined as 2048, truncation should occur
@@ -452,7 +452,7 @@ if(BUILD_TESTING)
       RCUTILS_COLORIZED_OUTPUT=0
   )
   if(TARGET test_logging_custom_env2)
-    target_link_libraries(test_logging_custom_env2 ${PROJECT_NAME} osrf_testing_tools_cpp::memory_tools)
+    target_link_libraries(test_logging_custom_env2 ${PROJECT_NAME} osrf_testing_tools_cpp::memory_tools mimick)
   endif()
 
   rcutils_custom_add_gtest(test_logging_bad_env test/test_logging_bad_env.cpp

src/char_array.c

@@ -172,14 +172,14 @@ rcutils_char_array_vsprintf(rcutils_char_array_t * char_array, const char * form
   if (new_size > char_array->buffer_capacity) {
     rcutils_ret_t ret = rcutils_char_array_expand_as_needed(char_array, new_size);
     if (ret != RCUTILS_RET_OK) {
-      RCUTILS_SET_ERROR_MSG("char array failed to expand");
       return ret;
     }
 
     if (_rcutils_char_array_vsprintf(char_array, format, args) != size) {
       if (rcutils_char_array_fini(char_array) == RCUTILS_RET_OK) {
         RCUTILS_SET_ERROR_MSG("vsprintf on resized char array failed");
       } else {
+        rcutils_reset_error();
         RCUTILS_SET_ERROR_MSG("vsprintf on resized char array failed; clean up failed too");
       }
       return RCUTILS_RET_ERROR;
@@ -196,7 +196,6 @@ rcutils_char_array_memcpy(rcutils_char_array_t * char_array, const char * src, s
 {
   rcutils_ret_t ret = rcutils_char_array_expand_as_needed(char_array, n);
   if (ret != RCUTILS_RET_OK) {
-    RCUTILS_SET_ERROR_MSG("char array failed to expand");
     return ret;
   }
   memcpy(char_array->buffer, src, n);
@@ -217,7 +216,6 @@ rcutils_char_array_strncat(rcutils_char_array_t * char_array, const char * src,
   size_t new_length = current_strlen + n + 1;
   rcutils_ret_t ret = rcutils_char_array_expand_as_needed(char_array, new_length);
   if (ret != RCUTILS_RET_OK) {
-    RCUTILS_SET_ERROR_MSG("char array failed to expand");
     return ret;
   }
 #ifndef _WIN32