Inititial stub for cmock tests (#297)

tools/cmock/coverage.cmake

@@ -0,0 +1,70 @@
+# Taken from amazon-freertos repository
+cmake_minimum_required(VERSION 3.13)
+set(BINARY_DIR ${CMAKE_BINARY_DIR})
+# reset coverage counters
+execute_process(
+            COMMAND lcov --directory ${CMAKE_BINARY_DIR}
+                         --base-directory ${CMAKE_BINARY_DIR}
+                         --zerocounters
+
+            COMMAND mkdir -p  ${CMAKE_BINARY_DIR}/coverage
+        )
+# make the initial/baseline capture a zeroed out files
+execute_process( COMMAND lcov --directory ${CMAKE_BINARY_DIR}
+                         --base-directory ${CMAKE_BINARY_DIR}
+                         --initial
+                         --capture
+                         --rc lcov_branch_coverage=1
+                         --rc genhtml_branch_coverage=1
+                         --output-file=${CMAKE_BINARY_DIR}/base_coverage.info
+        )
+file(GLOB files "${CMAKE_BINARY_DIR}/bin/tests/*")
+
+set(REPORT_FILE ${CMAKE_BINARY_DIR}/utest_report.txt)
+file(WRITE ${REPORT_FILE} "")
+# execute all files in bin directory, gathering the output to show it in CI
+foreach(testname ${files})
+    get_filename_component(test
+                           ${testname}
+                           NAME_WLE
+            )
+    message("Running ${testname}")
+    execute_process(COMMAND ${testname} OUTPUT_FILE ${CMAKE_BINARY_DIR}/${test}_out.txt)
+
+    file(READ ${CMAKE_BINARY_DIR}/${test}_out.txt CONTENTS)
+    file(APPEND ${REPORT_FILE} "${CONTENTS}")
+endforeach()
+
+# generate Junit style xml output
+execute_process(COMMAND ruby
+    ${CMOCK_DIR}/vendor/unity/auto/parse_output.rb
+                    -xml ${REPORT_FILE}
+                    WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
+            )
+
+# capture data after running the tests
+execute_process(
+            COMMAND lcov --capture
+                         --rc lcov_branch_coverage=1
+                         --rc genhtml_branch_coverage=1
+                         --base-directory ${CMAKE_BINARY_DIR}
+                         --directory ${CMAKE_BINARY_DIR}
+                         --output-file ${CMAKE_BINARY_DIR}/second_coverage.info
+        )
+
+# combile baseline results (zeros) with the one after running the tests
+execute_process(
+            COMMAND lcov --base-directory ${CMAKE_BINARY_DIR}
+                         --directory ${CMAKE_BINARY_DIR}
+                         --add-tracefile ${CMAKE_BINARY_DIR}/base_coverage.info
+                         --add-tracefile ${CMAKE_BINARY_DIR}/second_coverage.info
+                         --output-file ${CMAKE_BINARY_DIR}/coverage.info
+                         --no-external
+                         --rc lcov_branch_coverage=1
+        )
+execute_process(
+            COMMAND genhtml --rc lcov_branch_coverage=1
+                            --branch-coverage
+                            --output-directory ${CMAKE_BINARY_DIR}/coverage
+                                ${CMAKE_BINARY_DIR}/coverage.info
+        )