From 39eadca76b48fc7841da688f6745e40897ec37ff Mon Sep 17 00:00:00 2001 From: Jeremy Evans Date: Sat, 6 Apr 2019 00:02:11 -0700 Subject: Add FrozenError#receiver Similar to NameError#receiver, this returns the object on which the modification was attempted. This is useful as it can pinpoint exactly what is frozen. In many cases when a FrozenError is raised, you cannot determine from the context which object is frozen that you attempted to modify. Users of the current rb_error_frozen C function will have to switch to using rb_error_frozen_object or the new rb_frozen_error_raise in order to set the receiver of the FrozenError. To allow the receiver to be set from Ruby, support an optional second argument to FrozenError#initialize. Implements [Feature #15751] --- spec/ruby/core/exception/frozen_error_spec.rb | 34 +++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 spec/ruby/core/exception/frozen_error_spec.rb (limited to 'spec/ruby') diff --git a/spec/ruby/core/exception/frozen_error_spec.rb b/spec/ruby/core/exception/frozen_error_spec.rb new file mode 100644 index 0000000000..7b356253c4 --- /dev/null +++ b/spec/ruby/core/exception/frozen_error_spec.rb @@ -0,0 +1,34 @@ +require_relative '../../spec_helper' + +describe "FrozenError" do + ruby_version_is "2.5" do + it "is a subclass of RuntimeError" do + RuntimeError.should be_ancestor_of(FrozenError) + end + end +end + +describe "FrozenError.new" do + ruby_version_is "2.7" do + it "should take optional receiver argument" do + o = Object.new + FrozenError.new("msg", o).receiver.should equal(o) + end + end +end + +describe "FrozenError#receiver" do + ruby_version_is "2.7" do + it "should return frozen object that modification was attempted on" do + o = Object.new.freeze + begin + def o.x; end + rescue => e + e.should be_kind_of(FrozenError) + e.receiver.should equal(o) + else + raise + end + end + end +end -- cgit v1.2.3