Update tests to support CMake 4 (#698)

* update tests to support cmake 4

* remove version 3.30 in favor of the 3.28.3 (default of second latest Ubuntu LTS release)

Author: TheLartians

.github/workflows/test.yaml

@@ -19,7 +19,7 @@ jobs:
         os: [ubuntu-latest, windows-2022, macos-latest]
         # we want to ensure compatibility with a recent CMake version as well as the lowest officially supported
         # legacy version that we define as the default version of the second-latest Ubuntu LTS release currently available
-        cmake_version: ['3.16.3', '3.27.5', '3.30.0']
+        cmake_version: ['3.16.3', '3.28.3', '4.3.2']
         exclude:
           # there seems to be an issue with CMake 3.16 not finding a C++ compiler on windows-2022 
           - os: windows-2022

test/unit/local_dependency/OptionsCMakeLists.txt.in

@@ -30,6 +30,6 @@ include(@CPM_PATH@/testing.cmake)
 message("DEFINE_ALTERNATIVE_FUNCTION: ${DEFINE_ALTERNATIVE_FUNCTION}")
 
 # this option is overridden by CPM.cmake
-ASSERT_NOT_DEFINED(DEFINE_ALTERNATIVE_FUNCTION)
+ASSERT_FALSY(DEFINE_ALTERNATIVE_FUNCTION)
 # this option is leaked by the dependency
 ASSERT_EQUAL(${LEAKED_OPTION} "OFF")

test/unit/local_dependency/dependency/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.0 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.14 FATAL_ERROR)
 
 option(DEFINE_ALTERNATIVE_FUNCTION "define the alternative function" OFF)
 option(LEAKED_OPTION "this option will be leaked to the outer scope" OFF)