cmake_path command: path management

Fixes: #19568, #20922

1 files changed, 76 insertions, 0 deletions

diff --git a/Tests/RunCMake/cmake_path/RELATIVE_PATH.cmake b/Tests/RunCMake/cmake_path/RELATIVE_PATH.cmake
new file mode 100644
index 0000000..522a899
--- /dev/null
+++ b/Tests/RunCMake/cmake_path/RELATIVE_PATH.cmake
@@ -0,0 +1,76 @@
+
+include ("${RunCMake_SOURCE_DIR}/check_errors.cmake")
+unset (errors)
+
+set (path "/a//d")
+cmake_path(RELATIVE_PATH path BASE_DIRECTORY "/a/b/c")
+if (NOT path STREQUAL "../../d")
+  list (APPEND errors "'${path}' instead of '../../d'")
+endif()
+
+set (path "/a//b///c")
+cmake_path(RELATIVE_PATH path BASE_DIRECTORY "/a/d")
+if (NOT path STREQUAL "../b/c")
+  list (APPEND errors "'${path}' instead of '../b/c'")
+endif()
+
+set (path "a/b/c")
+cmake_path(RELATIVE_PATH path BASE_DIRECTORY "a")
+if (NOT path STREQUAL "b/c")
+  list (APPEND errors "'${path}' instead of 'b/c'")
+endif()
+
+set (path "a/b/c")
+cmake_path(RELATIVE_PATH path BASE_DIRECTORY "a/b/c/x/y")
+if (NOT path STREQUAL "../..")
+  list (APPEND errors "'${path}' instead of '../..'")
+endif()
+
+set (path "a/b/c")
+cmake_path(RELATIVE_PATH path BASE_DIRECTORY "a/b/c")
+if (NOT path STREQUAL ".")
+  list (APPEND errors "'${path}' instead of '.'")
+endif()
+
+set (path "a/b")
+cmake_path(RELATIVE_PATH path BASE_DIRECTORY "c/d")
+if (NOT path STREQUAL "../../a/b")
+  list (APPEND errors "'${path}' instead of '../../a/b'")
+endif()
+
+set (path "${CMAKE_CURRENT_SOURCE_DIR}/../../b")
+cmake_path(RELATIVE_PATH path)
+if (NOT path STREQUAL "../../b")
+  list (APPEND errors "'${path}' instead of '../../b'")
+endif()
+
+set (path "${CMAKE_CURRENT_SOURCE_DIR}/../../b")
+cmake_path(RELATIVE_PATH path OUTPUT_VARIABLE output)
+if (NOT path STREQUAL "${CMAKE_CURRENT_SOURCE_DIR}/../../b")
+  list (APPEND errors "input changed unexpectedly")
+endif()
+if (NOT output STREQUAL "../../b")
+  list (APPEND errors "'${output}' instead of '../../b'")
+endif()
+
+if (WIN32)
+  set (path "/a/d")
+  cmake_path(RELATIVE_PATH path BASE_DIRECTORY "e/d/c")
+  if (NOT path STREQUAL "/a/d")
+    list (APPEND errors "'${path}' instead of '/a/d'")
+  endif()
+
+  set (path "c:/a/d")
+  cmake_path(RELATIVE_PATH path BASE_DIRECTORY "e/d/c")
+  if (NOT path STREQUAL "")
+    list (APPEND errors "'${path}' instead of ''")
+  endif()
+elseif()
+  set (path "/a/d")
+  cmake_path(RELATIVE_PATH path BASE_DIRECTORY "e/d/c")
+  if (NOT path STREQUAL "")
+    list (APPEND errors "'${path}' instead of ''")
+  endif()
+endif()
+
+check_errors (RELATIVE_PATH ${errors})