add test for find_package(Protobuf REQUIRED)

recipe/cmake_test/CMakeLists.txt

@@ -0,0 +1,6 @@
+project(cf_dummy LANGUAGES C CXX)
+cmake_minimum_required(VERSION 3.12)
+# CMake seems to prefer its own FindProtobuf to the
+# protobuf-config.cmake being distributed by this
+# feedstock; make sure things work
+find_package(Protobuf REQUIRED)

recipe/meta.yaml

@@ -60,6 +60,13 @@ outputs:
       run:
         - ucrt  # [win]
     test:
+      requires:
+        # cmake needs compiler to be able to run package detection, see
+        # https://discourse.cmake.org/t/questions-about-find-package-cli-msvc/6194
+        - {{ compiler('cxx') }}  # [win]
+        - cmake                  # [win]
+      files:
+        - cmake_test/
       commands:
         {% for each_lib in libraries %}
         # shared libraries
@@ -85,6 +92,10 @@ outputs:
         # binary
         - protoc --help
 
+        # more CMake integration (CMake uses its own FindProtobuf)
+        - cd cmake_test         # [win]
+        - cmake %CMAKE_ARGS% .  # [win]
+
   - name: libprotobuf-static
     script: build-static.sh  # [unix]
     # cmake script currently disabled due to compatibility issues with
@@ -105,6 +116,13 @@ outputs:
       run_constrained:
         - libprotobuf <0a0  # [win]
     test:
+      requires:
+        # cmake needs compiler to be able to run package detection, see
+        # https://discourse.cmake.org/t/questions-about-find-package-cli-msvc/6194
+        - {{ compiler('cxx') }}  # [win]
+        - cmake                  # [win]
+      files:
+        - cmake_test/
       commands:
         {% for each_lib in libraries %}
         # static libraries
@@ -117,6 +135,13 @@ outputs:
         # binary
         - protoc --help  # [win]
 
+        # cmake
+        - if not exist %LIBRARY_LIB%\cmake\protobuf\protobuf-config.cmake exit 1  # [win]
+
+        # more CMake integration (CMake uses its own FindProtobuf)
+        - cd cmake_test         # [win]
+        - cmake %CMAKE_ARGS% .  # [win]
+
 about:
   home: https://developers.google.com/protocol-buffers/
   license: BSD-3-Clause