Tests: Add coverage for special characters in include directories

We have tests for special characters in preprocessor definitions and
custom command line arguments.  Add such a test for include directories.
Currently the Makefiles generators do not escape paths in `depend.make`
in all cases, so leave a FIXME comment and skip the test for those.

Issue: #20555

2 files changed, 29 insertions, 0 deletions

diff --git a/Tests/IncludeDirectories/CMakeLists.txt b/Tests/IncludeDirectories/CMakeLists.txt
index fa3309f036..838a236ec4 100644
--- a/Tests/IncludeDirectories/CMakeLists.txt
+++ b/Tests/IncludeDirectories/CMakeLists.txt
@@ -65,6 +65,24 @@ else()
     PROPERTIES COMPILE_FLAGS "-ITarProp")
 endif()
 
+# Test escaping of special characters in include directory paths.
+# FIXME: Implement full support in Makefile generators
+if(NOT CMAKE_GENERATOR MATCHES "Make")
+  set(special_chars "~@#$%^&=[]{}()!'")
+  if(NOT CMAKE_GENERATOR STREQUAL "Visual Studio 9 2008")
+    string(APPEND special_chars ",")
+  endif()
+  if(NOT WIN32 AND NOT CYGWIN)
+    string(APPEND special_chars "*?<>")
+  endif()
+  set(special_dir "${CMAKE_CURRENT_BINARY_DIR}/special-${special_chars}-include")
+  file(WRITE "${special_dir}/SpecialDir.h" "#define SPECIAL_DIR_H\n")
+  set(special_space_dir "${CMAKE_CURRENT_BINARY_DIR}/special-space ${special_chars}-include")
+  file(WRITE "${special_space_dir}/SpecialSpaceDir.h" "#define SPECIAL_SPACE_DIR_H\n")
+  target_include_directories(IncludeDirectories PRIVATE "${special_dir}" "${special_space_dir}")
+  target_compile_definitions(IncludeDirectories PRIVATE INCLUDE_SPECIAL_DIR)
+endif()
+
 add_library(ordertest ordertest.cpp)
 target_include_directories(ordertest SYSTEM PUBLIC SystemIncludeDirectories/systemlib)
 target_include_directories(ordertest PUBLIC SystemIncludeDirectories/userlib)
diff --git a/Tests/IncludeDirectories/main.cpp b/Tests/IncludeDirectories/main.cpp
index a59d27c396..7368ee9788 100644
--- a/Tests/IncludeDirectories/main.cpp
+++ b/Tests/IncludeDirectories/main.cpp
@@ -3,6 +3,17 @@
 #include "SrcProp.h"
 #include "TarProp.h"
 
+#ifdef INCLUDE_SPECIAL_DIR
+#  include "SpecialDir.h"
+#  ifndef SPECIAL_DIR_H
+#    error "SPECIAL_DIR_H not defined"
+#  endif
+#  include "SpecialSpaceDir.h"
+#  ifndef SPECIAL_SPACE_DIR_H
+#    error "SPECIAL_SPACE_DIR_H not defined"
+#  endif
+#endif
+
 int main(int argc, char** argv)
 {
   return 0;