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diff --git a/Tests/CTestUpdateHG.cmake.in b/Tests/CTestUpdateHG.cmake.in
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+++ b/Tests/CTestUpdateHG.cmake.in
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+# This script drives creation of a Mercurial repository and checks
+# that CTest can update from it.
+
+#-----------------------------------------------------------------------------
+# Test in a directory next to this script.
+get_filename_component(TOP "${CMAKE_CURRENT_LIST_FILE}" PATH)
+set(TOP "${TOP}/@CTestUpdateHG_DIR@")
+
+# Include code common to all update tests.
+include("@CMAKE_CURRENT_SOURCE_DIR@/CTestUpdateCommon.cmake")
+
+#-----------------------------------------------------------------------------
+# Report hg tools in use.
+message("Using HG tools:")
+set(HG "@HG_EXECUTABLE@")
+message(" hg = ${HG}")
+
+#-----------------------------------------------------------------------------
+# Initialize the testing directory.
+message("Creating test directory...")
+init_testing()
+
+#-----------------------------------------------------------------------------
+# Create the repository.
+message("Creating repository...")
+file(MAKE_DIRECTORY ${TOP}/repo.hg)
+run_child(
+  WORKING_DIRECTORY ${TOP}/repo.hg
+  COMMAND ${HG} init
+  )
+set(REPO file://${TOP}/repo.hg)
+
+#-----------------------------------------------------------------------------
+# Import initial content into the repository.
+message("Importing content...")
+create_content(import)
+
+# Import the content into the repository.
+run_child(WORKING_DIRECTORY ${TOP}/import
+  COMMAND ${HG} init
+  )
+run_child(WORKING_DIRECTORY ${TOP}/import
+  COMMAND ${HG} add .
+  )
+run_child(WORKING_DIRECTORY ${TOP}/import
+  COMMAND ${HG} commit -m "Initial content"
+                       -u "Test Author <testauthor@cmake.org>"
+  )
+run_child(WORKING_DIRECTORY ${TOP}/import
+  COMMAND ${HG} push "${REPO}"
+  )
+
+#-----------------------------------------------------------------------------
+# Create a working tree.
+message("Checking out first revision...")
+run_child(
+  WORKING_DIRECTORY ${TOP}
+  COMMAND ${HG} clone ${REPO} user-source
+  )
+
+#-----------------------------------------------------------------------------
+# Make changes in the working tree.
+message("Changing content...")
+update_content(user-source files_added files_removed dirs_added)
+if(dirs_added)
+  run_child(
+    WORKING_DIRECTORY ${TOP}/user-source
+    COMMAND ${HG} add ${dirs_added}
+    )
+endif(dirs_added)
+run_child(
+  WORKING_DIRECTORY ${TOP}/user-source
+  COMMAND ${HG} add ${files_added}
+  )
+run_child(
+  WORKING_DIRECTORY ${TOP}/user-source
+  COMMAND ${HG} rm ${files_removed}
+  )
+run_child(
+  WORKING_DIRECTORY ${TOP}/user-source
+  COMMAND ${HG} add
+  )
+
+#-----------------------------------------------------------------------------
+# Commit the changes to the repository.
+message("Committing revision 2...")
+run_child(
+  WORKING_DIRECTORY ${TOP}/user-source
+  COMMAND ${HG} commit -m "Changed content"
+                       -u "Test Author <testauthor@cmake.org>"
+  )
+run_child(
+  WORKING_DIRECTORY ${TOP}/user-source
+  COMMAND ${HG} push
+  )
+
+#-----------------------------------------------------------------------------
+# Make changes in the working tree.
+message("Changing content again...")
+change_content(user-source)
+run_child(
+  WORKING_DIRECTORY ${TOP}/user-source
+  COMMAND ${HG} add
+  )
+
+#-----------------------------------------------------------------------------
+# Commit the changes to the repository.
+message("Committing revision 3...")
+run_child(
+  WORKING_DIRECTORY ${TOP}/user-source
+  COMMAND ${HG} commit -m "Changed content again"
+                       -u "Test Author <testauthor@cmake.org>"
+  )
+run_child(
+  WORKING_DIRECTORY ${TOP}/user-source
+  COMMAND ${HG} push
+  )
+
+#-----------------------------------------------------------------------------
+# Go back to before the changes so we can test updating.
+message("Backing up to first revision...")
+run_child(
+  WORKING_DIRECTORY ${TOP}/user-source
+  COMMAND ${HG} update -C -r 0
+  )
+
+# 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...")
+
+# Create the user build tree.
+create_build_tree(user-source user-binary)
+file(APPEND ${TOP}/user-binary/CTestConfiguration.ini
+  "# HG command configuration
+UpdateCommand: ${HG}
+")
+
+# Run the dashboard command line interface.
+run_dashboard_command_line(user-binary)
+
+#-----------------------------------------------------------------------------
+# Test initial checkout and update with a dashboard script.
+message("Running CTest Dashboard Script...")
+
+create_dashboard_script(dash-binary
+  "# hg command configuration
+set(CTEST_HG_COMMAND \"${HG}\")
+set(CTEST_HG_UPDATE_OPTIONS)
+execute_process(
+  WORKING_DIRECTORY \"${TOP}\"
+  COMMAND \"${HG}\" clone \"${REPO}\" dash-source
+  )
+execute_process(
+  WORKING_DIRECTORY \"${TOP}/dash-source\"
+  COMMAND \"${HG}\" update -C -r 0
+  )
+")
+
+# Run the dashboard script with CTest.
+run_dashboard_script(dash-binary)