spec/ruby/core/exception/detailed_message_spec.rb


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require_relative '../../spec_helper'
require_relative 'fixtures/common'

describe "Exception#detailed_message" do
  ruby_version_is "3.2" do
    it "returns decorated message" do
      RuntimeError.new("new error").detailed_message.should == "new error (RuntimeError)"
    end

    it "is called by #full_message to allow message customization" do
      exception = Exception.new("new error")
      def exception.detailed_message(**)
        "<prefix>#{message}<suffix>"
      end
      exception.full_message(highlight: false).should.include? "<prefix>new error<suffix>"
    end

    it "accepts highlight keyword argument and adds escape control sequences" do
      RuntimeError.new("new error").detailed_message(highlight: true).should == "\e[1mnew error (\e[1;4mRuntimeError\e[m\e[1m)\e[m"
    end

    it "allows and ignores other keyword arguments" do
      RuntimeError.new("new error").detailed_message(foo: true).should == "new error (RuntimeError)"
    end

    it "returns just a message if exception class is anonymous" do
      Class.new(RuntimeError).new("message").detailed_message.should == "message"
    end

    it "returns 'unhandled exception' for an instance of RuntimeError with empty message" do
      RuntimeError.new("").detailed_message.should == "unhandled exception"
    end

    it "returns just class name for an instance of RuntimeError subclass with empty message" do
      DetailedMessageSpec::C.new("").detailed_message.should == "DetailedMessageSpec::C"
    end

    it "returns a generated class name for an instance of RuntimeError anonymous subclass with empty message" do
      klass = Class.new(RuntimeError)
      klass.new("").detailed_message.should =~ /\A#<Class:0x\h+>\z/
    end
  end
end