1 files changed, 165 insertions, 0 deletions
diff --git a/Tests/RunCMake/Ninja/RunCMakeTest.cmake b/Tests/RunCMake/Ninja/RunCMakeTest.cmake
index 4e06888..c73f852 100644
--- a/Tests/RunCMake/Ninja/RunCMakeTest.cmake
+++ b/Tests/RunCMake/Ninja/RunCMakeTest.cmake
@@ -1,5 +1,20 @@
 include(RunCMake)
 
+# Detect ninja version so we know what tests can be supported.
+execute_process(
+  COMMAND "${RunCMake_MAKE_PROGRAM}" --version
+  OUTPUT_VARIABLE ninja_out
+  ERROR_VARIABLE ninja_out
+  RESULT_VARIABLE ninja_res
+  OUTPUT_STRIP_TRAILING_WHITESPACE
+  )
+if(ninja_res EQUAL 0 AND "x${ninja_out}" MATCHES "^x[0-9]+\\.[0-9]+")
+  set(ninja_version "${ninja_out}")
+  message(STATUS "ninja version: ${ninja_version}")
+else()
+  message(FATAL_ERROR "'ninja --version' reported:\n${ninja_out}")
+endif()
+
 function(run_CMP0058 case)
   # Use a single build tree for a few tests without cleaning.
   set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/CMP0058-${case}-build)
@@ -32,3 +47,153 @@ function(run_SubDir)
   run_cmake_command(SubDir-build ${CMAKE_COMMAND} --build . --target ${SubDir_all})
 endfunction()
 run_SubDir()
+
+function(run_ninja dir)
+  execute_process(
+    COMMAND "${RunCMake_MAKE_PROGRAM}"
+    WORKING_DIRECTORY "${dir}"
+    OUTPUT_VARIABLE ninja_stdout
+    ERROR_VARIABLE ninja_stderr
+    RESULT_VARIABLE ninja_result
+    )
+  if(NOT ninja_result EQUAL 0)
+    message(STATUS "
+============ beginning of ninja's stdout ============
+${ninja_stdout}
+=============== end of ninja's stdout ===============
+")
+    message(STATUS "
+============ beginning of ninja's stderr ============
+${ninja_stderr}
+=============== end of ninja's stderr ===============
+")
+    message(FATAL_ERROR
+      "top ninja build failed exited with status ${ninja_result}")
+  endif()
+endfunction(run_ninja)
+
+function(sleep delay)
+  execute_process(
+    COMMAND ${CMAKE_COMMAND} -E sleep ${delay}
+    RESULT_VARIABLE result
+    )
+  if(NOT result EQUAL 0)
+    message(FATAL_ERROR "failed to sleep for ${delay} second.")
+  endif()
+endfunction(sleep)
+
+function(touch path)
+  execute_process(
+    COMMAND ${CMAKE_COMMAND} -E touch ${path}
+    RESULT_VARIABLE result
+    )
+  if(NOT result EQUAL 0)
+    message(FATAL_ERROR "failed to touch main ${path} file.")
+  endif()
+endfunction(touch)
+
+macro(ninja_escape_path path out)
+  string(REPLACE "\$ " "\$\$" "${out}" "${path}")
+  string(REPLACE " " "\$ " "${out}" "${${out}}")
+  string(REPLACE ":" "\$:" "${out}" "${${out}}")
+endmacro(ninja_escape_path)
+
+macro(shell_escape string out)
+  string(REPLACE "\"" "\\\"" "${out}" "${string}")
+endmacro(shell_escape)
+
+function(run_sub_cmake test ninja_output_path_prefix)
+  set(top_build_dir "${RunCMake_BINARY_DIR}/${test}-build/")
+  file(REMOVE_RECURSE "${top_build_dir}")
+  file(MAKE_DIRECTORY "${top_build_dir}")
+
+  ninja_escape_path("${ninja_output_path_prefix}"
+    escaped_ninja_output_path_prefix)
+
+  # Generate top build ninja file.
+  set(top_build_ninja "${top_build_dir}/build.ninja")
+  shell_escape("${top_build_ninja}" escaped_top_build_ninja)
+  set(build_ninja_dep "${top_build_dir}/build_ninja_dep")
+  ninja_escape_path("${build_ninja_dep}" escaped_build_ninja_dep)
+  shell_escape("${CMAKE_COMMAND}" escaped_CMAKE_COMMAND)
+  file(WRITE "${build_ninja_dep}" "fake dependency of top build.ninja file\n")
+  if(WIN32)
+    set(cmd_prefix "cmd.exe /C \"")
+    set(cmd_suffix "\"")
+  else()
+    set(cmd_prefix "")
+    set(cmd_suffix "")
+  endif()
+  file(WRITE "${top_build_ninja}" "\
+subninja ${escaped_ninja_output_path_prefix}/build.ninja
+default ${escaped_ninja_output_path_prefix}/all
+
+# Sleep for 1 second before to regenerate to make sure the timestamp of
+# the top build.ninja will be strictly greater than the timestamp of the
+# sub/build.ninja file. We assume the system as 1 sec timestamp resolution.
+rule RERUN
+  command = ${cmd_prefix}\"${escaped_CMAKE_COMMAND}\" -E sleep 1 && \"${escaped_CMAKE_COMMAND}\" -E touch \"${escaped_top_build_ninja}\"${cmd_suffix}
+  description = Testing regeneration
+  generator = 1
+
+build build.ninja: RERUN ${escaped_build_ninja_dep} || ${escaped_ninja_output_path_prefix}/build.ninja
+  pool = console
+")
+
+  # Run sub cmake project.
+  set(RunCMake_TEST_OPTIONS "-DCMAKE_NINJA_OUTPUT_PATH_PREFIX=${ninja_output_path_prefix}")
+  set(RunCMake_TEST_BINARY_DIR "${top_build_dir}/${ninja_output_path_prefix}")
+  run_cmake(${test})
+
+  # Check there is no 'default' statement in Ninja file generated by CMake.
+  set(sub_build_ninja "${RunCMake_TEST_BINARY_DIR}/build.ninja")
+  file(READ "${sub_build_ninja}" sub_build_ninja_file)
+  if(sub_build_ninja_file MATCHES "\ndefault [^\n][^\n]*all\n")
+    message(FATAL_ERROR
+      "unexpected 'default' statement found in '${sub_build_ninja}'")
+  endif()
+
+  # Run ninja from the top build directory.
+  run_ninja("${top_build_dir}")
+
+  # Test regeneration rules run in order.
+  set(main_cmakelists "${RunCMake_SOURCE_DIR}/CMakeLists.txt")
+  sleep(1) # Assume the system as 1 sec timestamp resolution.
+  touch("${main_cmakelists}")
+  touch("${build_ninja_dep}")
+  run_ninja("${top_build_dir}")
+  file(TIMESTAMP "${main_cmakelists}" mtime_main_cmakelists UTC)
+  file(TIMESTAMP "${sub_build_ninja}" mtime_sub_build_ninja UTC)
+  file(TIMESTAMP "${top_build_ninja}" mtime_top_build_ninja UTC)
+
+  # Check sub build.ninja is regenerated.
+  if(mtime_main_cmakelists STRGREATER mtime_sub_build_ninja)
+    message(FATAL_ERROR
+      "sub build.ninja not regenerated:
+  CMakeLists.txt  = ${mtime_main_cmakelists}
+  sub/build.ninja = ${mtime_sub_build_ninja}")
+  endif()
+
+  # Check top build.ninja is regenerated after sub build.ninja.
+  if(NOT mtime_top_build_ninja STRGREATER mtime_sub_build_ninja)
+    message(FATAL_ERROR
+      "top build.ninja not regenerated strictly after sub build.ninja:
+  sub/build.ninja = ${mtime_sub_build_ninja}
+  build.ninja     = ${mtime_top_build_ninja}")
+  endif()
+
+endfunction(run_sub_cmake)
+
+if("${ninja_version}" VERSION_LESS 1.6)
+  message(WARNING "Ninja is too old; skipping rest of test.")
+  return()
+endif()
+
+foreach(ninja_output_path_prefix "sub space" "sub")
+  run_sub_cmake(Executable "${ninja_output_path_prefix}")
+  run_sub_cmake(StaticLib  "${ninja_output_path_prefix}")
+  run_sub_cmake(SharedLib "${ninja_output_path_prefix}")
+  run_sub_cmake(TwoLibs "${ninja_output_path_prefix}")
+  run_sub_cmake(SubDirPrefix "${ninja_output_path_prefix}")
+  run_sub_cmake(CustomCommandWorkingDirectory "${ninja_output_path_prefix}")
+endforeach(ninja_output_path_prefix)