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};

# ─────────────────────────────────────────────────────────────────────────────
# Workflow 2 — Optional CHI dependency
#
# Strategy: block CHI with Test::Without::Module to prove that CSC itself
# never issues a `require CHI` — CHI is a purely caller-supplied runtime
# dependency.  The module is already loaded and continues to work with a
# hash-ref cache even when CHI cannot be required.
#
# After the subtest, CHI is unblocked so subsequent subtests can load it.
# ─────────────────────────────────────────────────────────────────────────────

subtest 'workflow:optional-chi:hash-backend-works-without-chi' => sub {
	# Block CHI from loading to simulate an environment where it is not installed.
	Test::Without::Module->import('CHI');

	# Verify the block is effective for new require calls.
	eval { require CHI };
	ok($@, 'optional-chi: CHI cannot be required when blocked by Test::Without::Module');

	diag "[optional-chi] require CHI error: $@" if $ENV{TEST_VERBOSE} && $@;

	# CSC itself never calls require CHI — it only interacts with whatever object
	# the caller passes as cache =>.  A hash ref works with no CHI in the process.
	my $obj = Class::Simple::Cached->new(cache => {});
	$obj->field('present');
	is($obj->field(), 'present',
		'optional-chi: hash-ref backend operates correctly without CHI');