require_relative '../spec_helper' describe "The $SAFE variable" do ruby_version_is ""..."2.7" do after :each do $SAFE = 0 end it "is 0 by default" do $SAFE.should == 0 proc { $SAFE.should == 0 }.call end it "can be set to 0" do proc { $SAFE = 0 $SAFE.should == 0 }.call end it "can be set to 1" do proc { $SAFE = 1 $SAFE.should == 1 }.call end [2, 3, 4].each do |n| it "cannot be set to #{n}" do -> { proc { $SAFE = n }.call }.should raise_error(ArgumentError, /\$SAFE=2 to 4 are obsolete/) end end it "raises ArgumentError when set to values below 0" do -> { proc { $SAFE = -100 }.call }.should raise_error(ArgumentError, "$SAFE should be >= 0") end it "cannot be set to values above 4" do -> { proc { $SAFE = 100 }.call }.should raise_error(ArgumentError, /\$SAFE=2 to 4 are obsolete/) end it "can be manually lowered" do $SAFE = 1 $SAFE = 0 $SAFE.should == 0 end it "is not Proc local" do $SAFE.should == 0 proc { $SAFE = 1 }.call $SAFE.should == 1 end it "is not lambda local" do $SAFE.should == 0 -> { $SAFE = 1 }.call $SAFE.should == 1 end it "is global like regular global variables" do Thread.new { $SAFE }.value.should == 0 $SAFE = 1 Thread.new { $SAFE }.value.should == 1 end it "can be read when default from Thread#safe_level" do Thread.current.safe_level.should == 0 end it "can be read when modified from Thread#safe_level" do proc { $SAFE = 1 Thread.current.safe_level.should == 1 }.call end end ruby_version_is "2.7"..."3.0" do it "warn when access" do -> { $SAFE }.should complain(/\$SAFE will become a normal global variable in Ruby 3.0/) end it "warn when set" do -> { $SAFE = 1 }.should complain(/\$SAFE will become a normal global variable in Ruby 3.0/) end end end