CTestCoverageCollectGCOV: Add test case

Tests/CMakeLists.txt

@@ -2268,6 +2268,18 @@ ${CMake_BINARY_DIR}/bin/cmake -DDIR=dev -P ${CMake_SOURCE_DIR}/Utilities/Release
   set_tests_properties(CTestTestUpload PROPERTIES
     PASS_REGULAR_EXPRESSION "Upload\\.xml")
 
+  configure_file(
+    "${CMake_SOURCE_DIR}/Tests/CTestCoverageCollectGCOV/test.cmake.in"
+    "${CMake_BINARY_DIR}/Tests/CTestCoverageCollectGCOV/test.cmake"
+    @ONLY ESCAPE_QUOTES)
+  add_test(CTestCoverageCollectGCOV ${CMAKE_CTEST_COMMAND}
+    -S "${CMake_BINARY_DIR}/Tests/CTestCoverageCollectGCOV/test.cmake" -VV
+    --output-log "${CMake_BINARY_DIR}/Tests/CTestCoverageCollectGCOV/testOut.log"
+    )
+  set_tests_properties(CTestCoverageCollectGCOV PROPERTIES
+    PASS_REGULAR_EXPRESSION
+    "PASSED with correct output.*Testing/CoverageInfo/echoargs.gcov")
+
   configure_file(
     "${CMake_SOURCE_DIR}/Tests/CTestTestEmptyBinaryDirectory/test.cmake.in"
     "${CMake_BINARY_DIR}/Tests/CTestTestEmptyBinaryDirectory/test.cmake"

Tests/CTestCoverageCollectGCOV/fakegcov.cmake

@@ -0,0 +1,8 @@
+foreach(I RANGE 0 ${CMAKE_ARGC})
+  if("${CMAKE_ARGV${I}}" MATCHES ".*\\.gcda")
+    set(gcda_file "${CMAKE_ARGV${I}}")
+  endif()
+endforeach()
+get_filename_component(gcda_file ${gcda_file} NAME_WE)
+file(WRITE "${CMAKE_SOURCE_DIR}/${gcda_file}.gcov"
+"fake gcov file")

Tests/CTestCoverageCollectGCOV/test.cmake.in

@@ -0,0 +1,39 @@
+cmake_minimum_required(VERSION 2.8.12)
+set(CTEST_PROJECT_NAME "SmallAndFast")
+set(CTEST_SOURCE_DIRECTORY "@CMake_SOURCE_DIR@/Tests/CTestTest/SmallAndFast")
+set(CTEST_BINARY_DIRECTORY "@CMake_BINARY_DIR@/Tests/CTestCoverageCollectGCOV")
+set(CTEST_CMAKE_GENERATOR "@CMAKE_GENERATOR@")
+ctest_start(Experimental)
+ctest_configure()
+ctest_build()
+ctest_test()
+
+file(WRITE ${CTEST_BINARY_DIRECTORY}/CMakeFiles/echoargs.dir/echoargs.gcda
+"dummy
+")
+
+include(CTestCoverageCollectGCOV)
+set(tar_file ${CTEST_BINARY_DIRECTORY}/gcov.tar)
+ctest_coverage_collect_gcov(
+  TARBALL "${tar_file}"
+  SOURCE "${CTEST_SOURCE_DIRECTORY}"
+  BUILD "${CTEST_BINARY_DIRECTORY}"
+  GCOV_COMMAND "${CMAKE_COMMAND}"
+  GCOV_OPTIONS -P "@CMake_SOURCE_DIR@/Tests/CTestCoverageCollectGCOV/fakegcov.cmake")
+
+execute_process(COMMAND
+      ${CMAKE_COMMAND} -E tar tf ${tar_file}
+      OUTPUT_VARIABLE out
+      WORKING_DIRECTORY ${CMAKE_CURRENT_LIST_DIR})
+
+set(expected_out
+"Testing/CoverageInfo/echoargs.gcov
+Testing/CoverageInfo/data.json
+CMakeFiles/echoargs.dir/Labels.json
+")
+
+if("${out}" STREQUAL "${expected_out}")
+  message("PASSED with correct output: ${out}")
+else()
+  message(FATAL_ERROR "FAILED: expected:\n${expected_out}\nGot:\n${out}")
+endif()