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# frozen_string_literal: false
require_relative '../../spec_helper'
describe 'String#+@' do
it 'returns an unfrozen copy of a frozen String' do
input = 'foo'.freeze
output = +input
output.should_not.frozen?
output.should == 'foo'
output << 'bar'
output.should == 'foobar'
end
it 'returns a mutable String itself' do
input = String.new("foo")
output = +input
output.should.equal?(input)
input << "bar"
output.should == "foobar"
end
context 'if file has "frozen_string_literal: true" magic comment' do
it 'returns mutable copy of a literal' do
ruby_exe(fixture(__FILE__, "freeze_magic_comment.rb")).should == 'mutable'
end
end
context 'if file has "frozen_string_literal: false" magic comment' do
it 'returns literal string itself' do
input = 'foo'
output = +input
output.equal?(input).should == true
end
end
context 'if file has no frozen_string_literal magic comment' do
ruby_version_is ''...'3.4' do
it 'returns literal string itself' do
eval(<<~RUBY).should == true
s = "foo"
s.equal?(+s)
RUBY
end
end
ruby_version_is '3.4' do
it 'returns mutable copy of a literal' do
eval(<<~RUBY).should == false
s = "foo"
s.equal?(+s)
RUBY
end
end
end
end
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