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# frozen_string_literal: true
# This test is going to use the RubyVM::InstructionSequence class to compile
# local tables and compare against them to ensure we have the same locals in the
# same order. This is important to guarantee that we compile indices correctly
# on CRuby (in terms of compatibility).
#
# There have also been changes made in other versions of Ruby, so we only want
# to test on the most recent versions.
return if !defined?(RubyVM::InstructionSequence) || RUBY_VERSION < "3.4.0"
# Omit tests if running on a 32-bit machine because there is a bug with how
# Ruby is handling large ISeqs on 32-bit machines
return if RUBY_PLATFORM =~ /i686/
require_relative "test_helper"
module Prism
class LocalsTest < TestCase
base = File.join(__dir__, "fixtures")
Dir["**/*.txt", base: base].each do |relative|
# Skip this fixture because it has a different number of locals because
# CRuby is eliminating dead code.
next if relative == "whitequark/ruby_bug_10653.txt"
filepath = File.join(base, relative)
define_method("test_#{relative}") { assert_locals(filepath) }
end
def setup
@previous_default_external = Encoding.default_external
ignore_warnings { Encoding.default_external = Encoding::UTF_8 }
end
def teardown
ignore_warnings { Encoding.default_external = @previous_default_external }
end
private
def assert_locals(filepath)
source = File.read(filepath)
expected = Debug.cruby_locals(source)
actual = Debug.prism_locals(source)
assert_equal(expected, actual)
end
def ignore_warnings
previous_verbosity = $VERBOSE
$VERBOSE = nil
yield
ensure
$VERBOSE = previous_verbosity
end
end
end
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