Autogen: Tests: Add a change-not test to the mocRerun test

Tests/QtAutogenRerun/mocRerun.cmake

@@ -4,7 +4,7 @@ set(mocRerunSrcDir "${CMAKE_CURRENT_SOURCE_DIR}/mocRerun")
 set(mocRerunBinDir "${CMAKE_CURRENT_BINARY_DIR}/mocRerun")
 
 # Initial build
-configure_file(mocRerun/test1a.h.in mocRerun/test1.h COPYONLY)
+configure_file("${mocRerunSrcDir}/test1a.h.in" "${mocRerunBinDir}/test1.h" COPYONLY)
 try_compile(MOC_RERUN
   "${mocRerunBinDir}"
   "${mocRerunSrcDir}"
@@ -17,23 +17,44 @@ try_compile(MOC_RERUN
 if (NOT MOC_RERUN)
   message(SEND_ERROR "Initial build of mocRerun failed. Output: ${output}")
 endif()
-
 # Get name of the output binary
-file(STRINGS "${mocRerunBinDir}/target1.txt" target1List ENCODING UTF-8)
-list(GET target1List 0 binFile)
-
-file(TIMESTAMP "${binFile}" timeBegin "${timeformat}")
+file(STRINGS "${mocRerunBinDir}/mocRerun.txt" mocRerunList ENCODING UTF-8)
+list(GET mocRerunList 0 mocRerunBin)
 
-# Change header file content and rebuild
+message("Changing the header content for a MOC rerun")
+# - Acquire binary timestamps before the build
+file(TIMESTAMP "${mocRerunBin}" timeBefore "${timeformat}")
+# - Ensure that the timestamp will change
+# - Change header file content and rebuild
+# - Rebuild
 execute_process(COMMAND "${CMAKE_COMMAND}" -E sleep 1)
-configure_file(mocRerun/test1b.h.in mocRerun/test1.h COPYONLY)
+configure_file("${mocRerunSrcDir}/test1b.h.in" "${mocRerunBinDir}/test1.h" COPYONLY)
 execute_process(COMMAND "${CMAKE_COMMAND}" --build . WORKING_DIRECTORY "${mocRerunBinDir}" RESULT_VARIABLE result )
 if (result)
   message(SEND_ERROR "Second build of mocRerun failed.")
 endif()
+# - Acquire binary timestamps after the build
+file(TIMESTAMP "${mocRerunBin}" timeAfter "${timeformat}")
+# - Test if timestamps changed
+if (NOT timeAfter GREATER timeBefore)
+  message(SEND_ERROR "File (${mocRerunBin}) should have changed!")
+endif()
 
-file(TIMESTAMP "${binFile}" timeStep1 "${timeformat}")
 
-if (NOT timeStep1 GREATER timeBegin)
-  message(SEND_ERROR "File (${binFile}) should have changed in the first step!")
+message("Changing nothing for a MOC rerun")
+# - Acquire binary timestamps before the build
+file(TIMESTAMP "${mocRerunBin}" timeBefore "${timeformat}")
+# - Ensure that the timestamp would change
+# - Change nothing
+# - Rebuild
+execute_process(COMMAND "${CMAKE_COMMAND}" -E sleep 1)
+execute_process(COMMAND "${CMAKE_COMMAND}" --build . WORKING_DIRECTORY "${mocRerunBinDir}" RESULT_VARIABLE result )
+if (result)
+  message(SEND_ERROR "Third build of mocRerun failed.")
+endif()
+# - Acquire binary timestamps after the build
+file(TIMESTAMP "${mocRerunBin}" timeAfter "${timeformat}")
+# - Test if timestamps changed
+if (timeAfter GREATER timeBefore)
+  message(SEND_ERROR "File (${mocRerunBin}) should not have changed!")
 endif()

Tests/QtAutogenRerun/mocRerun/CMakeLists.txt

@@ -19,17 +19,15 @@ set(CMAKE_AUTORCC ON)
 
 # Generated source file
 add_custom_command(OUTPUT main.cpp
-                   COMMAND ${CMAKE_COMMAND} -E sleep 2
-                   COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_CURRENT_SOURCE_DIR}/main.cpp.in ${CMAKE_CURRENT_BINARY_DIR}/main.cpp
-                   )
+  COMMAND ${CMAKE_COMMAND} -E sleep 2
+  COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_CURRENT_SOURCE_DIR}/main.cpp.in ${CMAKE_CURRENT_BINARY_DIR}/main.cpp)
 
 add_executable(mocRerun
   ${CMAKE_CURRENT_BINARY_DIR}/test1.h
   ${CMAKE_CURRENT_BINARY_DIR}/main.cpp
-  res1.qrc
-  )
+  res1.qrc)
 target_include_directories(mocRerun PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
 target_link_libraries(mocRerun ${QT_CORE_TARGET})
 # Write target name to text file
 add_custom_command(TARGET mocRerun POST_BUILD COMMAND
-  ${CMAKE_COMMAND} -E echo "$<TARGET_FILE:mocRerun>" > target1.txt)
+  ${CMAKE_COMMAND} -E echo "$<TARGET_FILE:mocRerun>" > mocRerun.txt)