ENH: Extend CTest.UpdateSVN to test local mods

This teaches the test to create local modifications in the work tree
before updating.

Tests/CTestUpdateCVS.cmake.in

@@ -102,6 +102,9 @@ run_child(
   COMMAND ${CVSCMD} up -rRevision1
   )
 
+# Create a modified file.
+modify_content(user-source)
+
 #-----------------------------------------------------------------------------
 # Test updating the user work directory with the command-line interface.
 message("Running CTest Dashboard Command Line...")

Tests/CTestUpdateCommon.cmake

@@ -109,6 +109,12 @@ function(change_content dir)
   file(APPEND ${TOP}/${dir}/subdir/foo.txt "foo line 2\n")
 endfunction(change_content)
 
+#-----------------------------------------------------------------------------
+# Function to create local modifications before update
+function(modify_content dir)
+  file(APPEND ${TOP}/${dir}/CTestConfig.cmake "# local modification\n")
+endfunction(modify_content)
+
 #-----------------------------------------------------------------------------
 # Function to write CTestConfiguration.ini content.
 function(create_build_tree src_dir bin_dir)
@@ -149,7 +155,7 @@ function(run_dashboard_command_line bin_dir)
     )
 
   # Verify the updates reported by CTest.
-  check_updates(${bin_dir} foo.txt bar.txt zot.txt
+  check_updates(${bin_dir} foo.txt bar.txt zot.txt CTestConfig.cmake
                            subdir/foo.txt subdir/bar.txt)
 endfunction(run_dashboard_command_line)
 

Tests/CTestUpdateSVN.cmake.in

@@ -103,6 +103,9 @@ run_child(
   COMMAND ${SVNCMD} up -r1
   )
 
+# Create a modified file.
+modify_content(user-source)
+
 #-----------------------------------------------------------------------------
 # Test updating the user work directory with the command-line interface.
 message("Running CTest Dashboard Command Line...")