Precompile headers: Add unit tests

3 files changed, 74 insertions, 0 deletions

diff --git a/Tests/RunCMake/VS10Project/RunCMakeTest.cmake b/Tests/RunCMake/VS10Project/RunCMakeTest.cmake
index 5ca069a..72154e7 100644
--- a/Tests/RunCMake/VS10Project/RunCMakeTest.cmake
+++ b/Tests/RunCMake/VS10Project/RunCMakeTest.cmake
@@ -25,6 +25,7 @@ run_cmake(VsProjectImport)
 run_cmake(VsPackageReferences)
 run_cmake(VsDpiAware)
 run_cmake(VsDpiAwareBadParam)
+run_cmake(VsPrecompileHeaders)
 
 if(CMAKE_C_COMPILER_ID STREQUAL "MSVC" AND CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 19.05)
   run_cmake(VsJustMyCode)
diff --git a/Tests/RunCMake/VS10Project/VsPrecompileHeaders-check.cmake b/Tests/RunCMake/VS10Project/VsPrecompileHeaders-check.cmake
new file mode 100644
index 0000000..82ca421
--- /dev/null
+++ b/Tests/RunCMake/VS10Project/VsPrecompileHeaders-check.cmake
@@ -0,0 +1,69 @@
+set(pch_header "${RunCMake_TEST_BINARY_DIR}/CMakeFiles/tgt.dir/cmake_pch.hxx")
+set(pch_source "${RunCMake_TEST_BINARY_DIR}/CMakeFiles/tgt.dir/cmake_pch.cxx")
+
+file(TO_NATIVE_PATH "${pch_source}" pch_source_win)
+
+if(NOT EXISTS "${pch_header}")
+  set(RunCMake_TEST_FAILED "Generated PCH header ${pch_header} does not exist.")
+  return()
+endif()
+if(NOT EXISTS "${pch_source}")
+  set(RunCMake_TEST_FAILED "Generated PCH header ${pch_source} does not exist.")
+  return()
+endif()
+
+set(tgt_project "${RunCMake_TEST_BINARY_DIR}/tgt.vcxproj")
+if (NOT EXISTS "${tgt_project}")
+  set(RunCMake_TEST_FAILED "Generated project file ${tgt_project} doesn't exist.")
+  return()
+endif()
+
+file(STRINGS ${tgt_project} tgt_projects_strings)
+
+foreach(line IN LISTS tgt_projects_strings)
+  if (line MATCHES "<PrecompiledHeader.*>Use</PrecompiledHeader>")
+    set(have_pch_use ON)
+  endif()
+
+  if (line MATCHES "<PrecompiledHeader.*>Create</PrecompiledHeader>")
+    set(have_pch_create ON)
+  endif()
+
+  if (line MATCHES "<PrecompiledHeaderFile.*>${pch_header}</PrecompiledHeaderFile>")
+    set(have_pch_header ON)
+  endif()
+
+  if (line MATCHES "<ForcedIncludeFiles.*>${pch_header}</ForcedIncludeFiles>")
+    set(have_force_pch_header ON)
+  endif()
+
+  string(FIND "${line}" "<ClCompile Include=\"${pch_source_win}\">" find_pos)
+  if (NOT find_pos EQUAL "-1")
+    set(have_pch_source_compile ON)
+  endif()
+endforeach()
+
+if (NOT have_pch_use)
+  set(RunCMake_TEST_FAILED "Generated project should have the <PrecompiledHeader>Use</PrecompiledHeader> block.")
+  return()
+endif()
+
+if (NOT have_pch_create)
+  set(RunCMake_TEST_FAILED "Generated project should have the <PrecompiledHeader>Create</PrecompiledHeader> block.")
+  return()
+endif()
+
+if (NOT have_pch_header)
+  set(RunCMake_TEST_FAILED "Generated project should have the <PrecompiledHeaderFile>${pch_header}</PrecompiledHeaderFile> block.")
+  return()
+endif()
+
+if (NOT have_force_pch_header)
+  set(RunCMake_TEST_FAILED "Generated project should have the <ForcedIncludeFiles>${pch_header}</ForcedIncludeFiles> block.")
+  return()
+endif()
+
+if (NOT have_pch_source_compile)
+  set(RunCMake_TEST_FAILED "Generated project should have the <ClCompile Include=\"${pch_source_win}\"> block.")
+  return()
+endif()
diff --git a/Tests/RunCMake/VS10Project/VsPrecompileHeaders.cmake b/Tests/RunCMake/VS10Project/VsPrecompileHeaders.cmake
new file mode 100644
index 0000000..6d208c9
--- /dev/null
+++ b/Tests/RunCMake/VS10Project/VsPrecompileHeaders.cmake
@@ -0,0 +1,4 @@
+project(VsPrecompileHeaders CXX)
+
+add_library(tgt SHARED empty.cxx)
+target_precompile_headers(tgt PRIVATE stdafx.h)