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# frozen_string_literal: true
# Based on Rails Testing Deprecator
# https://github.com/rails/rails/blob/main/activesupport/lib/active_support/testing/deprecation.rb
# Asserts that a matching deprecation warning was emitted during the execution of the yielded block.
#
# assert_deprecated do
# DeprecatedGenerator.generate
# end
#
def assert_deprecated(&block)
warning = with_captured_stdout(&block)
result = yield block
refute_predicate warning, :empty?, 'Expected a deprecation warning within the block but received none'
result
end
# Asserts that no deprecation warnings are emitted during the execution of the yielded block.
#
# assert_not_deprecated do
# Faker::Internet.email
# end
def assert_not_deprecated(&block)
warning = with_captured_stdout(&block)
result = yield block
assert_predicate warning, :empty?, "Expected no deprecation warning within the block but received a deprecation: #{warning}"
result
end
def with_captured_stdout(&block)
original_stdout = $stdout
$stdout = StringIO.new
yield block
$stdout.string
ensure
$stdout = original_stdout
end
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