lib/modules: Add error message test for pushing down non-attrsets

# Shorthand meta attribute does not duplicate the config

checkConfigOutput '^"one two"$' config.result ./shorthand-meta.nix

checkConfigError "In module .*test-push-down-non-attrs.nix., you're trying to define a value of type \`bool'\n\s*rather than an attribute set for the option" config ./test-push-down-non-attrs.nix

checkConfigOutput '^true$' config.result ./test-mergeAttrDefinitionsWithPrio.nix

# Check that a module argument is passed, also when a default is available

{ lib, ... }:

{

  config = lib.mkIf true true;

}