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require_relative '../spec_helper'
describe "The --enable-frozen-string-literal flag causes string literals to" do
it "produce the same object each time" do
ruby_exe(fixture(__FILE__, "freeze_flag_one_literal.rb"), options: "--enable-frozen-string-literal").chomp.should == "true"
end
it "produce the same object for literals with the same content" do
ruby_exe(fixture(__FILE__, "freeze_flag_two_literals.rb"), options: "--enable-frozen-string-literal").chomp.should == "true"
end
it "produce the same object for literals with the same content in different files" do
ruby_exe(fixture(__FILE__, "freeze_flag_across_files.rb"), options: "--enable-frozen-string-literal").chomp.should == "true"
end
it "produce different objects for literals with the same content in different files if they have different encodings" do
ruby_exe(fixture(__FILE__, "freeze_flag_across_files_diff_enc.rb"), options: "--enable-frozen-string-literal").chomp.should == "true"
end
end
describe "The --disable-frozen-string-literal flag causes string literals to" do
it "produce a different object each time" do
ruby_exe(fixture(__FILE__, "freeze_flag_one_literal.rb"), options: "--disable-frozen-string-literal").chomp.should == "false"
end
end
describe "With neither --enable-frozen-string-literal nor --disable-frozen-string-literal flag set" do
before do
# disable --enable-frozen-string-literal and --disable-frozen-string-literal passed in $RUBYOPT
@rubyopt = ENV["RUBYOPT"]
ENV["RUBYOPT"] = ""
end
after do
ENV["RUBYOPT"] = @rubyopt
end
it "produce a different object each time" do
ruby_exe(fixture(__FILE__, "freeze_flag_one_literal.rb")).chomp.should == "false"
end
context "if file has no frozen_string_literal comment" do
it "produce different mutable strings each time" do
ruby_exe(fixture(__FILE__, "string_literal_raw.rb")).chomp.should == "frozen:false interned:false"
end
guard -> { ruby_version_is "3.4" and !"test".frozen? } do
it "complain about modification of produced mutable strings" do
-> { eval(<<~RUBY) }.should complain(/warning: literal string will be frozen in the future \(run with --debug-frozen-string-literal for more information\)/)
"test" << "!"
RUBY
end
it "does not complain about modification if Warning[:deprecated] is false" do
deprecated = Warning[:deprecated]
Warning[:deprecated] = false
-> { eval(<<~RUBY) }.should_not complain
"test" << "!"
RUBY
ensure
Warning[:deprecated] = deprecated
end
end
end
it "if file has frozen_string_literal:true comment produce same frozen strings each time" do
ruby_exe(fixture(__FILE__, "string_literal_frozen_comment.rb")).chomp.should == "frozen:true interned:true"
end
it "if file has frozen_string_literal:false comment produce different mutable strings each time" do
ruby_exe(fixture(__FILE__, "string_literal_mutable_comment.rb")).chomp.should == "frozen:false interned:false"
end
end
describe "The --debug flag produces" do
it "debugging info on attempted frozen string modification" do
error_str = ruby_exe(fixture(__FILE__, 'debug_info.rb'), options: '--enable-frozen-string-literal --debug', args: "2>&1")
error_str.should include("can't modify frozen String")
error_str.should include("created at")
error_str.should include("command_line/fixtures/debug_info.rb:1")
end
guard -> { ruby_version_is "3.4" and !"test".frozen? } do
it "debugging info on mutating chilled string" do
error_str = ruby_exe(fixture(__FILE__, 'debug_info.rb'), options: '-w --debug', args: "2>&1")
error_str.should include("literal string will be frozen in the future")
error_str.should include("the string was created here")
error_str.should include("command_line/fixtures/debug_info.rb:1")
end
end
end
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