fixup! cmake: Include CTest

Add python-based tests only when PYTHON_COMMAND is available.

CMakeLists.txt

@@ -314,7 +314,13 @@ if(WERROR)
 endif()
 
 find_package(Python3 3.9 COMPONENTS Interpreter)
-set(PYTHON_COMMAND ${Python3_EXECUTABLE})
+if(Python3_EXECUTABLE)
+  set(PYTHON_COMMAND ${Python3_EXECUTABLE})
+else()
+  list(APPEND configure_warnings
+    "Minimum required Python not found. Utils and rpcauth tests are disabled."
+  )
+endif()
 
 add_subdirectory(src)
 add_subdirectory(test)

cmake/tests.cmake

@@ -1,18 +1,20 @@
-# Copyright (c) 2023 The Bitcoin Core developers
+# Copyright (c) 2023-present The Bitcoin Core developers
 # Distributed under the MIT software license, see the accompanying
-# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+# file COPYING or https://opensource.org/license/mit/.
 
 include(CTest)
 
-if(TARGET bitcoin-util AND TARGET bitcoin-tx)
+if(TARGET bitcoin-util AND TARGET bitcoin-tx AND PYTHON_COMMAND)
   add_test(NAME util_test_runner
     COMMAND ${CMAKE_COMMAND} -E env BITCOINUTIL=$<TARGET_FILE:bitcoin-util> BITCOINTX=$<TARGET_FILE:bitcoin-tx> ${PYTHON_COMMAND} ${CMAKE_BINARY_DIR}/test/util/test_runner.py
   )
 endif()
 
-add_test(NAME util_rpcauth_test
-  COMMAND ${PYTHON_COMMAND} ${CMAKE_BINARY_DIR}/test/util/rpcauth-test.py
-)
+if(PYTHON_COMMAND)
+  add_test(NAME util_rpcauth_test
+    COMMAND ${PYTHON_COMMAND} ${CMAKE_BINARY_DIR}/test/util/rpcauth-test.py
+  )
+endif()
 
 if(TARGET bench_bitcoin)
   add_test(NAME bench_sanity_check_high_priority