Add some tests for write_basic_config_version_file()

Alex

Modules/BasicConfigVersion-AnyNewerVersion.cmake.in

@@ -10,6 +10,8 @@
 
 set(PACKAGE_VERSION "@CVF_VERSION@")
 
+set(PACKAGE_VERSION_EXACT FALSE) # initialize to FALSE
+
 # check that the installed version has the same 32/64bit-ness as the one which is currently searching:
 if(NOT "${CMAKE_SIZEOF_VOID_P}"  STREQUAL  "@CMAKE_SIZEOF_VOID_P@")
    math(EXPR installedBits "@CMAKE_SIZEOF_VOID_P@ * 8")

Modules/BasicConfigVersion-SameMajorVersion.cmake.in

@@ -12,6 +12,8 @@
 
 set(PACKAGE_VERSION "@CVF_VERSION@")
 
+set(PACKAGE_VERSION_EXACT FALSE) # initialize to FALSE
+
 # check that the installed version has the same 32/64bit-ness as the one which is currently searching:
 if(NOT "${CMAKE_SIZEOF_VOID_P}" STREQUAL "@CMAKE_SIZEOF_VOID_P@")
    math(EXPR installedBits "@CMAKE_SIZEOF_VOID_P@ * 8")

Tests/FindPackageTest/CMakeLists.txt

@@ -303,3 +303,83 @@ SET(CMakeTestExportPackage_DIR "" CACHE FILEPATH
   "Wipe out find results for testing." FORCE)
 STRING(REGEX REPLACE "-.*$" "" version ${CMAKE_VERSION})
 FIND_PACKAGE(CMakeTestExportPackage 1.${version} EXACT REQUIRED)
+
+#-----------------------------------------------------------------------------
+# Test write_basic_config_version_file().
+
+include(WriteBasicConfigVersionFile)
+
+write_basic_config_version_file(${CMAKE_CURRENT_BINARY_DIR}/Foo123ConfigVersion.cmake
+                                VERSION 1.2.3
+                                COMPATIBILITY AnyNewerVersion)
+
+set(PACKAGE_FIND_VERSION 2.3.4)
+include(${CMAKE_CURRENT_BINARY_DIR}/Foo123ConfigVersion.cmake)
+if(PACKAGE_VERSION_COMPATIBLE)
+  message(SEND_ERROR "Found Foo123 with version 1.2.3, but 2.3.4 was requested !")
+endif()
+
+set(PACKAGE_FIND_VERSION 0.0.1)
+include(${CMAKE_CURRENT_BINARY_DIR}/Foo123ConfigVersion.cmake)
+if(NOT PACKAGE_VERSION_COMPATIBLE)
+  message(SEND_ERROR "Did not find Foo123 with version 1.2.3 (0.0.1 was requested) !")
+endif()
+
+set(PACKAGE_FIND_VERSION 1.0.0)
+include(${CMAKE_CURRENT_BINARY_DIR}/Foo123ConfigVersion.cmake)
+if(NOT PACKAGE_VERSION_COMPATIBLE)
+  message(SEND_ERROR "Did not find Foo123 with version 1.2.3 (1.0.0 was requested) !")
+endif()
+if(PACKAGE_VERSION_EXACT)
+  message(SEND_ERROR "PACKAGE_VERSION_EXACT set, although it should not be !")
+endif()
+
+set(PACKAGE_FIND_VERSION 1.2.3)
+include(${CMAKE_CURRENT_BINARY_DIR}/Foo123ConfigVersion.cmake)
+if(NOT PACKAGE_VERSION_COMPATIBLE)
+  message(SEND_ERROR "Did not find Foo123 with version 1.2.3 (1.2.3 was requested) !")
+endif()
+if(NOT PACKAGE_VERSION_EXACT)
+  message(SEND_ERROR "PACKAGE_VERSION_EXACT not set, although it should be !")
+endif()
+
+
+#######################
+
+write_basic_config_version_file(${CMAKE_CURRENT_BINARY_DIR}/Boo123ConfigVersion.cmake
+                                VERSION 1.2.3
+                                COMPATIBILITY SameMajorVersion)
+
+set(PACKAGE_FIND_VERSION 2.3.4)
+set(PACKAGE_FIND_VERSION_MAJOR 2)
+include(${CMAKE_CURRENT_BINARY_DIR}/Boo123ConfigVersion.cmake)
+if(PACKAGE_VERSION_COMPATIBLE)
+  message(SEND_ERROR "Found Boo123 with version 1.2.3, but 2.3.4 was requested !")
+endif()
+
+set(PACKAGE_FIND_VERSION 0.0.1)
+set(PACKAGE_FIND_VERSION_MAJOR 0)
+include(${CMAKE_CURRENT_BINARY_DIR}/Boo123ConfigVersion.cmake)
+if(PACKAGE_VERSION_COMPATIBLE)
+  message(SEND_ERROR "Found Boo123 with version 1.2.3, but 0.0.1 was requested !")
+endif()
+
+set(PACKAGE_FIND_VERSION 1.0.0)
+set(PACKAGE_FIND_VERSION_MAJOR 1)
+include(${CMAKE_CURRENT_BINARY_DIR}/Boo123ConfigVersion.cmake)
+if(NOT PACKAGE_VERSION_COMPATIBLE)
+  message(SEND_ERROR "Did not find Boo123 with version 1.2.3 (1.0.0 was requested) !")
+endif()
+if(PACKAGE_VERSION_EXACT)
+  message(SEND_ERROR "PACKAGE_VERSION_EXACT set, although it should not be !")
+endif()
+
+set(PACKAGE_FIND_VERSION 1.2.3)
+set(PACKAGE_FIND_VERSION_MAJOR 1)
+include(${CMAKE_CURRENT_BINARY_DIR}/Boo123ConfigVersion.cmake)
+if(NOT PACKAGE_VERSION_COMPATIBLE)
+  message(SEND_ERROR "Did not find Boo123 with version 1.2.3 (1.2.3 was requested) !")
+endif()
+if(NOT PACKAGE_VERSION_EXACT)
+  message(SEND_ERROR "PACKAGE_VERSION_EXACT not set, although it should be !")
+endif()