Add find-package-test

src/beman/optional26/tests/CMakeLists.txt

@@ -62,3 +62,21 @@ set_tests_properties(constructor_fails PROPERTIES WILL_FAIL true)
 # Alternatively -- check for a particular regex to pass
 # set_tests_properties(constructor_fails PROPERTIES PASS_REGULAR_EXPRESSION
 # "Assert true")
+
+# test if the targets are findable from the build directory
+if(CMAKE_BUILD_TYPE STREQUAL Debug)
+    add_test(
+        NAME find-package-test
+        COMMAND
+            ${CMAKE_CTEST_COMMAND}
+            # --verbose
+            --output-on-failure -C $<CONFIG> --build-and-test
+            "${PROJECT_SOURCE_DIR}"
+            "${CMAKE_CURRENT_BINARY_DIR}/find-package-test" --build-generator
+            ${CMAKE_GENERATOR} --build-makeprogram ${CMAKE_MAKE_PROGRAM}
+            --build-options "-DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}"
+            "-DCMAKE_CXX_STANDARD=${CMAKE_CXX_STANDARD}"
+            "-DCMAKE_BUILD_TYPE=$<CONFIG>"
+            "-DCMAKE_PREFIX_PATH=${CMAKE_PREFIX_PATH}"
+    )
+endif()