From 647633e961565b46dbe8e88209db00849f861b4f Mon Sep 17 00:00:00 2001
From: Matthew Woehlke <matthew.woehlke@kitware.com>
Date: Fri, 14 Feb 2025 11:50:29 -0500
Subject: Tests: Add CPS end-to-end test

Add a test that validates that we can export a package in CPS format and
import it again. This is fairly simplistic at the moment, but still
serves to validate some recent fixes that are not covered by more
targeted unit tests.
---
 Tests/RunCMake/CMakeLists.txt                      |  1 +
 Tests/RunCMake/CpsExportImport/CMakeLists.txt      |  3 +++
 Tests/RunCMake/CpsExportImport/RunCMakeTest.cmake  | 24 ++++++++++++++++++++++
 .../RunCMake/CpsExportImport/TestExecutable.cmake  | 12 +++++++++++
 Tests/RunCMake/CpsExportImport/TestLibrary.cmake   | 14 +++++++++++++
 Tests/RunCMake/CpsExportImport/app.c               | 13 ++++++++++++
 Tests/RunCMake/CpsExportImport/liba.c              |  7 +++++++
 Tests/RunCMake/CpsExportImport/libb.c              | 13 ++++++++++++
 8 files changed, 87 insertions(+)
 create mode 100644 Tests/RunCMake/CpsExportImport/CMakeLists.txt
 create mode 100644 Tests/RunCMake/CpsExportImport/RunCMakeTest.cmake
 create mode 100644 Tests/RunCMake/CpsExportImport/TestExecutable.cmake
 create mode 100644 Tests/RunCMake/CpsExportImport/TestLibrary.cmake
 create mode 100644 Tests/RunCMake/CpsExportImport/app.c
 create mode 100644 Tests/RunCMake/CpsExportImport/liba.c
 create mode 100644 Tests/RunCMake/CpsExportImport/libb.c

diff --git a/Tests/RunCMake/CMakeLists.txt b/Tests/RunCMake/CMakeLists.txt
index e664ca3..b6304a8 100644
--- a/Tests/RunCMake/CMakeLists.txt
+++ b/Tests/RunCMake/CMakeLists.txt
@@ -396,6 +396,7 @@ set_property(TEST RunCMake.CompilerId APPEND PROPERTY LABELS "CUDA" "HIP" "ISPC"
 add_RunCMake_test(CompilerTest ${CMake_TEST_LANG_VARS})
 set_property(TEST RunCMake.CompilerTest APPEND PROPERTY LABELS "CUDA" "HIP" "ISPC" "Fortran")
 add_RunCMake_test(Configure -DMSVC_IDE=${MSVC_IDE})
+add_RunCMake_test(CpsExportImport)
 add_RunCMake_test(DisallowedCommands)
 if("${CMAKE_GENERATOR}" MATCHES "Unix Makefiles|Ninja")
   add_RunCMake_test(ExportCompileCommands)
diff --git a/Tests/RunCMake/CpsExportImport/CMakeLists.txt b/Tests/RunCMake/CpsExportImport/CMakeLists.txt
new file mode 100644
index 0000000..955802c
--- /dev/null
+++ b/Tests/RunCMake/CpsExportImport/CMakeLists.txt
@@ -0,0 +1,3 @@
+cmake_minimum_required(VERSION 4.0)
+project(${RunCMake_TEST} NONE)
+include(${RunCMake_TEST}.cmake)
diff --git a/Tests/RunCMake/CpsExportImport/RunCMakeTest.cmake b/Tests/RunCMake/CpsExportImport/RunCMakeTest.cmake
new file mode 100644
index 0000000..dff26eb
--- /dev/null
+++ b/Tests/RunCMake/CpsExportImport/RunCMakeTest.cmake
@@ -0,0 +1,24 @@
+include(RunCMake)
+
+set(RunCMake_TEST_OPTIONS
+  -Wno-dev
+  "-DCMAKE_EXPERIMENTAL_EXPORT_PACKAGE_INFO:STRING=b80be207-778e-46ba-8080-b23bba22639e"
+  "-DCMAKE_EXPERIMENTAL_FIND_CPS_PACKAGES:STRING=e82e467b-f997-4464-8ace-b00808fff261"
+  )
+
+function(build_project test)
+  set(RunCMake_TEST_NO_CLEAN FALSE)
+  set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/${test}-build)
+  if (NOT RunCMake_GENERATOR_IS_MULTI_CONFIG)
+    list(APPEND RunCMake_TEST_OPTIONS -DCMAKE_BUILD_TYPE=Release)
+  endif()
+
+  run_cmake(${test})
+
+  set(RunCMake_TEST_NO_CLEAN TRUE)
+  run_cmake_command(${test}-build ${CMAKE_COMMAND} --build . --config Release)
+  run_cmake_command(${test}-install ${CMAKE_COMMAND} --install . --config Release)
+endfunction()
+
+build_project(TestLibrary)
+build_project(TestExecutable)
diff --git a/Tests/RunCMake/CpsExportImport/TestExecutable.cmake b/Tests/RunCMake/CpsExportImport/TestExecutable.cmake
new file mode 100644
index 0000000..cced129
--- /dev/null
+++ b/Tests/RunCMake/CpsExportImport/TestExecutable.cmake
@@ -0,0 +1,12 @@
+project(TestLibrary C)
+
+set(CMAKE_PREFIX_PATH "${CMAKE_BINARY_DIR}/../install")
+set(CMAKE_INSTALL_PREFIX "${CMAKE_BINARY_DIR}/../install")
+
+find_package(libb REQUIRED COMPONENTS libb)
+
+add_executable(app app.c)
+
+target_link_libraries(app PUBLIC libb::libb)
+
+install(TARGETS app DESTINATION bin)
diff --git a/Tests/RunCMake/CpsExportImport/TestLibrary.cmake b/Tests/RunCMake/CpsExportImport/TestLibrary.cmake
new file mode 100644
index 0000000..a984f2b
--- /dev/null
+++ b/Tests/RunCMake/CpsExportImport/TestLibrary.cmake
@@ -0,0 +1,14 @@
+project(TestLibrary C)
+
+set(CMAKE_INSTALL_PREFIX "${CMAKE_BINARY_DIR}/../install")
+
+add_library(liba SHARED liba.c)
+add_library(libb SHARED libb.c)
+
+target_link_libraries(libb PUBLIC liba)
+
+install(TARGETS liba EXPORT liba DESTINATION lib)
+install(PACKAGE_INFO liba DESTINATION cps EXPORT liba)
+
+install(TARGETS libb EXPORT libb DESTINATION lib)
+install(PACKAGE_INFO libb DESTINATION cps EXPORT libb)
diff --git a/Tests/RunCMake/CpsExportImport/app.c b/Tests/RunCMake/CpsExportImport/app.c
new file mode 100644
index 0000000..9ad7829
--- /dev/null
+++ b/Tests/RunCMake/CpsExportImport/app.c
@@ -0,0 +1,13 @@
+#include <stdio.h>
+
+extern
+#ifdef _WIN32
+__declspec(dllimport)
+#endif
+int ask(void);
+
+int main(void)
+{
+  printf("%i\n", ask());
+  return 0;
+}
diff --git a/Tests/RunCMake/CpsExportImport/liba.c b/Tests/RunCMake/CpsExportImport/liba.c
new file mode 100644
index 0000000..a2e2267
--- /dev/null
+++ b/Tests/RunCMake/CpsExportImport/liba.c
@@ -0,0 +1,7 @@
+#ifdef _WIN32
+__declspec(dllexport)
+#endif
+int answer(void)
+{
+  return 42;
+}
diff --git a/Tests/RunCMake/CpsExportImport/libb.c b/Tests/RunCMake/CpsExportImport/libb.c
new file mode 100644
index 0000000..8ba04af
--- /dev/null
+++ b/Tests/RunCMake/CpsExportImport/libb.c
@@ -0,0 +1,13 @@
+extern
+#ifdef _WIN32
+__declspec(dllimport)
+#endif
+int answer(void);
+
+#ifdef _WIN32
+__declspec(dllexport)
+#endif
+int ask(void)
+{
+  return answer();
+}
-- 
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