include ("${RunCMake_SOURCE_DIR}/check_errors.cmake")
unset (errors)

cmake_path (APPEND path "/a/b" "c")
set(output "$<PATH:APPEND,/a/b,c>")
if (NOT output STREQUAL path)
  list (APPEND errors "'${output}' instead of '${path}'")
endif()

set (path "a")
cmake_path (APPEND path "")
set(output "$<PATH:APPEND,a,>")
if (NOT output STREQUAL path)
  list (APPEND errors "'${output}' instead of '${path}'")
endif()

cmake_path (APPEND path "/b")
set(output "$<PATH:APPEND,a/,/b>")
if (NOT output STREQUAL path)
  list (APPEND errors "'${output}' instead of '${path}'")
endif()

if (WIN32)
  set (path "a")
  cmake_path (APPEND path "c:/b")
  set(output "$<PATH:APPEND,a,c:/b>")
  if (NOT output STREQUAL path)
    list (APPEND errors "'${output}' instead of '${path}'")
  endif()

  set (path "a")
  cmake_path (APPEND path "c:")
  set(output "$<PATH:APPEND,a,c:>")
  if (NOT output STREQUAL path)
    list (APPEND errors "'${output}' instead of '${path}'")
  endif()

  set (path "c:a")
  cmake_path (APPEND path "/b")
  set(output "$<PATH:APPEND,c:a,/b>")
  if (NOT output STREQUAL path)
    list (APPEND errors "'${output}' instead of '${path}'")
  endif()

  set (path "c:a")
  cmake_path (APPEND path "c:b")
  set(output "$<PATH:APPEND,c:a,c:b>")
  if (NOT output STREQUAL path)
    list (APPEND errors "'${output}' instead of '${path}'")
  endif()

  set (path "//host")
  cmake_path (APPEND path "b")
  set(output "$<PATH:APPEND,//host,b>")
  if (NOT output STREQUAL path)
    list (APPEND errors "'${output}' instead of '${path}'")
  endif()

  set (path "//host/")
  cmake_path (APPEND path "b")
  set(output "$<PATH:APPEND,//host/,b>")
  if (NOT output STREQUAL path)
    list (APPEND errors "'${output}' instead of '${path}'")
  endif()
endif()


######################################
## tests with list of paths
######################################
unset(reference)
foreach(item IN ITEMS "/a/b" "/x/y")
  cmake_path (APPEND result "${item}" "c")
  list(APPEND reference "${result}")
endforeach()
set(output "$<PATH:APPEND,/a/b;/x/y,c>")
if (NOT output STREQUAL reference)
  list (APPEND errors "'${output}' instead of '${reference}'")
endif()

unset(reference)
foreach(item IN ITEMS "a" "c")
  cmake_path (APPEND item "")
  list(APPEND reference "${item}")
endforeach()
set(output "$<PATH:APPEND,a;c,>")
if (NOT output STREQUAL reference)
  list (APPEND errors "'${output}' instead of '${reference}'")
endif()

unset(reference)
foreach(item IN ITEMS "a/" "c/")
  cmake_path (APPEND item "/b")
  list(APPEND reference "${item}")
endforeach()
set(output "$<PATH:APPEND,a/;c/,/b>")
if (NOT output STREQUAL reference)
  list (APPEND errors "'${output}' instead of '${reference}'")
endif()


check_errors ("PATH:APPEND" ${errors})