require_relative '../../../spec_helper'
require_relative '../fixtures/classes'

describe :method_to_s, shared: true do
  before :each do
    @m = MethodSpecs::MySub.new.method :bar
    @string = @m.send(@method)
  end

  it "returns a String" do
    @m.send(@method).should be_kind_of(String)
  end

  it "returns a String for methods defined with attr_accessor" do
    m = MethodSpecs::Methods.new.method :attr
    m.send(@method).should be_kind_of(String)
  end

  it "returns a String containing 'Method'" do
    @string.should =~ /\bMethod\b/
  end

  it "returns a String containing the method name" do
    @string.should =~ /\#bar/
  end

  it "returns a String containing method arguments" do
    obj = MethodSpecs::Methods.new
    obj.method(:zero).send(@method).should.include?("()")
    obj.method(:one_req).send(@method).should.include?("(a)")
    obj.method(:one_req_named).send(@method).should.include?("(a:)")
    obj.method(:zero_with_block).send(@method).should.include?("(&blk)")
    obj.method(:one_opt).send(@method).should.include?("(a=...)")
    obj.method(:one_opt_named).send(@method).should.include?("(a: ...)")
    obj.method(:zero_with_splat).send(@method).should.include?("(*a)")
    obj.method(:zero_with_double_splat).send(@method).should.include?("(**a)")
    obj.method(:one_req_one_opt_with_splat_and_block).send(@method).should.include?("(a, b=..., *c, &blk)")
  end

  it "returns a String containing the Module the method is defined in" do
    @string.should =~ /MethodSpecs::MyMod/
  end

  it "returns a String containing the Module the method is referenced from" do
    @string.should =~ /MethodSpecs::MySub/
  end

  it "returns a String including all details" do
    @string.should.start_with? "#<Method: MethodSpecs::MySub(MethodSpecs::MyMod)#bar"
  end

  it "does not show the defining module if it is the same as the receiver class" do
    MethodSpecs::A.new.method(:baz).send(@method).should.start_with? "#<Method: MethodSpecs::A#baz"
  end

  ruby_version_is '3.0' do
    it "returns a String containing the Module containing the method if object has a singleton class but method is not defined in the singleton class" do
      obj = MethodSpecs::MySub.new
      obj.singleton_class
      @m = obj.method(:bar)
      @string = @m.send(@method)
      @string.should.start_with? "#<Method: MethodSpecs::MySub(MethodSpecs::MyMod)#bar"

      c = MethodSpecs::MySub.dup
      m = Module.new{def bar; end}
      c.extend(m)
      @string = c.method(:bar).send(@method)
      @string.should.start_with? "#<Method: #<Class:#{c.inspect}>(#{m.inspect})#bar"
    end
  end

  it "returns a String containing the singleton class if method is defined in the singleton class" do
    obj = MethodSpecs::MySub.new
    def obj.bar; end
    @m = obj.method(:bar)
    @string = @m.send(@method).sub(/0x\h+/, '0xXXXXXX')
    @string.should.start_with? "#<Method: #<MethodSpecs::MySub:0xXXXXXX>.bar"
  end

  ruby_bug '#17428', ''...'3.0' do
    it "shows the metaclass and the owner for a Module instance method retrieved from a class" do
      String.method(:include).inspect.should.start_with?("#<Method: #<Class:String>(Module)#include")
    end
  end
end