tests: build: cmake: Use Upstream cmock #60

Not this is not latest version but it aligned to the version used at zwa,
may unify-core align to it and synchronize all projects accordingly,
or reconsider the architecture.

Since UnifySDK also depends on CMock, indirect dep will be privileged,
May those lines be removed in later cleanup changes.

Origin: #70
Bug-SiliconLabsSoftware: #60
Relate-to: #46
Signed-off-by: Philippe Coval <philippe.coval@silabs.com>

Author: rzr

CMakeLists.txt

@@ -14,6 +14,9 @@ if(NOT DEFINED COMMON_LOCATION)
 endif()
 
 if(BUILD_TESTING)
+  include(cmake/modules/FindCMock.cmake)
+  set(THS-CMOCK_LOCATION "${cmock_SOURCE_DIR}")
+  set(THS-UNITY_LOCATION  "${cmock_SOURCE_DIR}/vendor/unity")
   # https://gitlab.kitware.com/cmake/cmake/-/issues/22813#note_1620373
   option(BUILD_TESTING_PROPERTY_DISABLED "WARNING: Bypass some tests" True)
   if(BUILD_TESTING_PROPERTY_DISABLED)

cmake/modules/FindCMock.cmake

@@ -0,0 +1,45 @@
+# SPDX-FileCopyrightText: Silicon Laboratories Inc. <https://www.silabs.com/>
+# SPDX-License-Identifier: Zlib
+#
+# This recipe allows to download CMock
+# It can be used by projects which are depending on it
+# Feel free to copy this (up to date) file everywhere it is needed
+
+include(FetchContent)
+
+if(NOT DEFINED CMOCK_GIT_REPOSITORY)
+  if(DEFINED ENV{CMOCK_GIT_REPOSITORY})
+    set(CMOCK_GIT_REPOSITORY $ENV{CMOCK_GIT_REPOSITORY})
+  endif()
+endif()
+if("${CMOCK_GIT_REPOSITORY}" STREQUAL "")
+  set(CMOCK_GIT_REPOSITORY "https://github.com/ThrowTheSwitch/CMock")
+endif()
+
+if(NOT DEFINED CMOCK_GIT_TAG)
+  if(DEFINED ENV{CMOCK_GIT_TAG})
+    set(CMOCK_GIT_TAG $ENV{CMOCK_GIT_TAG})
+  else()
+    set(CMOCK_GIT_TAG "v2.5.3")
+  endif()
+endif()
+  
+FetchContent_Declare(
+  CMock
+  GIT_REPOSITORY ${CMOCK_GIT_REPOSITORY}
+  GIT_TAG        ${CMOCK_GIT_TAG}
+  GIT_SUBMODULES_RECURSE True
+  GIT_SHALLOW 1
+)
+
+message(STATUS "${CMAKE_PROJECT_NAME}: Depends: ${CMOCK_GIT_REPOSITORY}#${CMOCK_GIT_TAG}")
+string(REGEX MATCH ".*/?main/?.*" CMOCK_UNSTABLE_GIT_TAG "${CMOCK_GIT_TAG}")
+if(CMOCK_GIT_TAG STREQUAL "" OR CMOCK_UNSTABLE_GIT_TAG)
+  message(WARNING "${CMAKE_PROJECT_NAME}: Declare CMOCK_GIT_TAG to stable version not: ${CMOCK_UNSTABLE_GIT_TAG}")
+endif()
+
+set(FETCHCONTENT_QUIET FALSE)
+FetchContent_MakeAvailable(CMock)
+
+message(STATUS "CMock Sources: ${cmock_SOURCE_DIR}")
+message(STATUS "CMock Binaries: ${cmock_BINARY_DIR}")