ci: Test find_package support

.github/workflows/linux.yml

@@ -34,7 +34,9 @@ jobs:
       - name: Configure Vulkan-Headers
         run: cmake -S . -B build
       - name: Install Vulkan-Headers
-        run: cmake --install build --prefix build/install
+        run: cmake --install build --prefix ${GITHUB_WORKSPACE}/build/install
+      - name: Test Vulkan-Headers find_package support
+        run: cmake -S tests/find_package -B build/tests/find_package -D CMAKE_PREFIX_PATH=${GITHUB_WORKSPACE}/build/install
 
   # Enable testing
   ubuntu-cmake-tests:

tests/find_package/CMakeLists.txt

@@ -0,0 +1,23 @@
+cmake_minimum_required(VERSION 3.10.2)
+
+project(TEST_VULKAN_HEADERS_FIND_PACKAGE_SUPPORT LANGUAGES C)
+
+find_package(VulkanHeaders REQUIRED CONFIG) 
+
+if (NOT TARGET Vulkan::Headers)
+    message(FATAL_ERROR "Vulkan::Headers target not defined")
+endif()
+
+if (NOT DEFINED VULKAN_HEADERS_REGISTRY_DIRECTORY)
+    message(FATAL_ERROR "VULKAN_HEADERS_REGISTRY_DIRECTORY not defined!")
+endif()
+
+if (NOT EXISTS "${VULKAN_HEADERS_REGISTRY_DIRECTORY}/vk.xml")
+    message(FATAL_ERROR "VULKAN_HEADERS_REGISTRY_DIRECTORY not valid!")
+endif()
+message(STATUS "VULKAN_HEADERS_REGISTRY_DIRECTORY = ${VULKAN_HEADERS_REGISTRY_DIRECTORY}")
+
+if (NOT DEFINED VulkanHeaders_VERSION)
+    message(FATAL_ERROR "VulkanHeaders_VERSION not defined!")
+endif()
+message(STATUS "VulkanHeaders_VERSION = ${VulkanHeaders_VERSION}")