Disabled libical tests if libical version is less than 1.0.

On old libical versions, DST change date is wrong and this would fail
some of the tests. This is not a bug in TDE but in old libical libraries.
Starting from libical 1.0, the bug seems to have been fixed.

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
(cherry picked from commit b1b5ff52be)

libkcal/ConfigureChecks.cmake

@@ -16,6 +16,10 @@ if( LIBICAL_FOUND )
   if( NOT (LIBICAL_VERSION VERSION_LESS "3.0") )
     add_definitions(-DUSE_LIBICAL_3_0)
   endif( )
+  # check for libical >= 1.0
+  if( LIBICAL_VERSION VERSION_LESS "1.0" )
+    set( LIBICAL_LESS_1_0 1 CACHE INTERNAL "" FORCE )
+  endif( )
   # check for libical >= 0.46
   if( NOT (LIBICAL_VERSION VERSION_LESS "0.46") )
     add_definitions(-DUSE_LIBICAL_0_46)

libkcal/tests/CMakeLists.txt

@@ -74,6 +74,12 @@ foreach( _test_name ${_all_tests} )
   list( GET ${_test_name} 1 _test_id )
   list( GET ${_test_name} 2 _test_search_filter )
 	file( GLOB_RECURSE _test_files RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} ${_test_search_filter} )
+	# skip some libical tests if libical < 1.0, due to bug in old libical versions
+	if( LIBICAL_LESS_1_0 )
+		list( REMOVE_ITEM _test_files data/RecurrenceRule/LibICal/LibICal_TestCase15.ics )
+		list( REMOVE_ITEM _test_files data/RecurrenceRule/LibICal/LibICal_TestCase54.ics )
+		list( REMOVE_ITEM _test_files data/RecurrenceRule/LibICal/LibICal_TestCase55.ics )
+	endif( )
 	foreach( _test_file ${_test_files} )
 		add_test(
 		  ${_test_executable}__${_test_id}__${_test_file}__