From ea8c37b759cfcf78ddeab9b296e874ee8a5212e1 Mon Sep 17 00:00:00 2001
From: Ben Boeckel <ben.boeckel@kitware.com>
Date: Mon, 4 Dec 2023 07:20:36 -0500
Subject: Tests/CXXModules: add a test which scans a PCH-using source

This tests that PCH usage works with scanning logic.
---
 Tests/RunCMake/CXXModules/RunCMakeTest.cmake                |  2 ++
 .../CXXModules/examples/scan-with-pch/CMakeLists.txt        | 13 +++++++++++++
 Tests/RunCMake/CXXModules/examples/scan-with-pch/main.cxx   |  8 ++++++++
 Tests/RunCMake/CXXModules/examples/scan-with-pch/pch.h      |  1 +
 4 files changed, 24 insertions(+)
 create mode 100644 Tests/RunCMake/CXXModules/examples/scan-with-pch/CMakeLists.txt
 create mode 100644 Tests/RunCMake/CXXModules/examples/scan-with-pch/main.cxx
 create mode 100644 Tests/RunCMake/CXXModules/examples/scan-with-pch/pch.h

diff --git a/Tests/RunCMake/CXXModules/RunCMakeTest.cmake b/Tests/RunCMake/CXXModules/RunCMakeTest.cmake
index 781c708..0c0f1b4 100644
--- a/Tests/RunCMake/CXXModules/RunCMakeTest.cmake
+++ b/Tests/RunCMake/CXXModules/RunCMakeTest.cmake
@@ -165,6 +165,8 @@ if (RunCMake_GENERATOR MATCHES "Ninja")
   run_cxx_module_test_target(ninja-cmp0154 "${ninja_cmp0154_target}")
 endif ()
 
+run_cxx_module_test(scan-with-pch)
+
 # Tests which use named modules.
 if ("named" IN_LIST CMake_TEST_MODULE_COMPILATION)
   run_cxx_module_test(simple)
diff --git a/Tests/RunCMake/CXXModules/examples/scan-with-pch/CMakeLists.txt b/Tests/RunCMake/CXXModules/examples/scan-with-pch/CMakeLists.txt
new file mode 100644
index 0000000..e3e7561
--- /dev/null
+++ b/Tests/RunCMake/CXXModules/examples/scan-with-pch/CMakeLists.txt
@@ -0,0 +1,13 @@
+cmake_minimum_required(VERSION 3.28)
+project(cxx_modules_scan_with_pch CXX)
+
+include("${CMAKE_SOURCE_DIR}/../cxx-modules-rules.cmake")
+
+add_executable(simple)
+target_sources(simple
+  PRIVATE
+    main.cxx)
+target_compile_features(simple PUBLIC cxx_std_20)
+target_precompile_headers(simple PRIVATE pch.h)
+
+add_test(NAME simple COMMAND simple)
diff --git a/Tests/RunCMake/CXXModules/examples/scan-with-pch/main.cxx b/Tests/RunCMake/CXXModules/examples/scan-with-pch/main.cxx
new file mode 100644
index 0000000..33bd41e
--- /dev/null
+++ b/Tests/RunCMake/CXXModules/examples/scan-with-pch/main.cxx
@@ -0,0 +1,8 @@
+#ifndef from_pch
+#  error "pch not present"
+#endif
+
+int main(int argc, char* argv[])
+{
+  return 0;
+}
diff --git a/Tests/RunCMake/CXXModules/examples/scan-with-pch/pch.h b/Tests/RunCMake/CXXModules/examples/scan-with-pch/pch.h
new file mode 100644
index 0000000..2841ee9
--- /dev/null
+++ b/Tests/RunCMake/CXXModules/examples/scan-with-pch/pch.h
@@ -0,0 +1 @@
+#define from_pch
-- 
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