CMakePackageConfigHelpers: Add unit tests for INSTALL_PREFIX option

Tests/FindPackageTest/CMakeLists.txt

@@ -374,6 +374,7 @@ endif()
 
 include(CMakePackageConfigHelpers)
 
+# Generate a config file ready to be installed.
 set(INCLUDE_INSTALL_DIR include )
 set(SHARE_INSTALL_DIR "${CMAKE_INSTALL_PREFIX}/share/" )
 set(CURRENT_BUILD_DIR "${CMAKE_CURRENT_BINARY_DIR}" )
@@ -407,6 +408,43 @@ if(Relocatable_FOUND)
   message(SEND_ERROR "Relocatable_FOUND set to TRUE !")
 endif()
 
+# Generate a config file for the build tree.
+set(INCLUDE_INSTALL_DIR include )
+set(SHARE_INSTALL_DIR "${CMAKE_CURRENT_BINARY_DIR}/share/" )
+set(CURRENT_BUILD_DIR "${CMAKE_CURRENT_BINARY_DIR}" )
+
+configure_package_config_file(RelocatableConfig.cmake.in "${CMAKE_CURRENT_BINARY_DIR}/RelocatableConfig.cmake"
+                              INSTALL_DESTINATION "${CMAKE_CURRENT_BINARY_DIR}"
+                              PATH_VARS INCLUDE_INSTALL_DIR SHARE_INSTALL_DIR CURRENT_BUILD_DIR
+                              INSTALL_PREFIX "${CMAKE_CURRENT_BINARY_DIR}"
+                             )
+
+set(Relocatable_FIND_COMPONENTS AComp BComp CComp)
+set(Relocatable_FIND_REQUIRED_BComp 1)
+include("${CMAKE_CURRENT_BINARY_DIR}/RelocatableConfig.cmake")
+
+if(NOT "${RELOC_INCLUDE_DIR}" STREQUAL "${CMAKE_CURRENT_BINARY_DIR}/include")
+  message(SEND_ERROR "RELOC_INCLUDE_DIR set by configure_package_config_file() is set to \"${RELOC_INCLUDE_DIR}\" (expected \"${CMAKE_CURRENT_BINARY_DIR}/include\")")
+endif()
+
+if(NOT "${RELOC_SHARE_DIR}" STREQUAL "${CMAKE_CURRENT_BINARY_DIR}/share/")
+  message(SEND_ERROR "RELOC_SHARE_DIR set by configure_package_config_file() is set to \"${RELOC_SHARE_DIR}\" (expected \"${CMAKE_CURRENT_BINARY_DIR}/share/\")")
+endif()
+
+if(NOT "${RELOC_BUILD_DIR}" STREQUAL "${CMAKE_CURRENT_BINARY_DIR}")
+  message(SEND_ERROR "RELOC_BUILD_DIR set by configure_package_config_file() is set to \"${RELOC_BUILD_DIR}\" (expected \"${CMAKE_CURRENT_BINARY_DIR}\")")
+endif()
+
+if(NOT DEFINED Relocatable_FOUND)
+  message(SEND_ERROR "Relocatable_FOUND not defined !")
+endif()
+
+if(Relocatable_FOUND)
+  message(SEND_ERROR "Relocatable_FOUND set to TRUE !")
+endif()
+
+
+
 #-----------------------------------------------------------------------------
 # Test write_basic_config_version_file().