awesome_print/spec/methods_spec.rb

require File.expand_path(File.dirname(__FILE__) + '/spec_helper')

describe "Single method" do
  before do
    stub_dotfile!
  end

  after do
    Object.instance_eval{ remove_const :Hello } if defined?(Hello)
  end

  it "plain: should handle a method with no arguments" do
    method = ''.method(:upcase)
    method.ai(:plain => true).should == 'String#upcase()'
  end

  it "color: should handle a method with no arguments" do
    method = ''.method(:upcase)
    method.ai.should == "\e[1;33mString\e[0m#\e[0;35mupcase\e[0m\e[0;37m()\e[0m"
  end

  it "plain: should handle a method with one argument" do
    method = ''.method(:include?)
    method.ai(:plain => true).should == 'String#include?(arg1)'
  end

  it "color: should handle a method with one argument" do
    method = ''.method(:include?)
    method.ai.should == "\e[1;33mString\e[0m#\e[0;35minclude?\e[0m\e[0;37m(arg1)\e[0m"
  end

  it "plain: should handle a method with two arguments" do
    method = ''.method(:tr)
    method.ai(:plain => true).should == 'String#tr(arg1, arg2)'
  end

  it "color: should handle a method with two arguments" do
    method = ''.method(:tr)
    method.ai.should == "\e[1;33mString\e[0m#\e[0;35mtr\e[0m\e[0;37m(arg1, arg2)\e[0m"
  end

  it "plain: should handle a method with multiple arguments" do
    method = ''.method(:split)
    method.ai(:plain => true).should == 'String#split(*arg1)'
  end

  it "color: should handle a method with multiple arguments" do
    method = ''.method(:split)
    method.ai.should == "\e[1;33mString\e[0m#\e[0;35msplit\e[0m\e[0;37m(*arg1)\e[0m"
  end

  it "plain: should handle a method defined in mixin" do
    method = ''.method(:is_a?)
    method.ai(:plain => true).should == 'String (Kernel)#is_a?(arg1)'
  end

  it "color: should handle a method defined in mixin" do
    method = ''.method(:is_a?)
    method.ai.should == "\e[1;33mString (Kernel)\e[0m#\e[0;35mis_a?\e[0m\e[0;37m(arg1)\e[0m"
  end

  it "plain: should handle an unbound method" do
    class Hello
      def world; end
    end
    method = Hello.instance_method(:world)
    method.ai(:plain => true).should == 'Hello (unbound)#world()'
  end

  it "color: should handle an unbound method" do
    class Hello
      def world(a,b); end
    end
    method = Hello.instance_method(:world)
    if RUBY_VERSION < '1.9.2'
      method.ai.should == "\e[1;33mHello (unbound)\e[0m#\e[0;35mworld\e[0m\e[0;37m(arg1, arg2)\e[0m"
    else
      method.ai.should == "\e[1;33mHello (unbound)\e[0m#\e[0;35mworld\e[0m\e[0;37m(a, b)\e[0m"
    end
  end
end

describe "Object methods" do
  before do
    stub_dotfile!
  end

  after do
    Object.instance_eval{ remove_const :Hello } if defined?(Hello)
  end

  describe "object.methods" do
    it "index: should handle object.methods" do
      out = nil.methods.ai(:plain => true).split("\n").grep(/is_a\?/).first
      out.should =~ /^\s+\[\s*\d+\]\s+is_a\?\(arg1\)\s+NilClass \(Kernel\)$/
    end

    it "no index: should handle object.methods" do
      out = nil.methods.ai(:plain => true, :index => false).split("\n").grep(/is_a\?/).first
      out.should =~ /^\s+is_a\?\(arg1\)\s+NilClass \(Kernel\)$/
    end
  end

  describe "object.public_methods" do
    it "index: should handle object.public_methods" do
      out = nil.public_methods.ai(:plain => true).split("\n").grep(/is_a\?/).first
      out.should =~ /^\s+\[\s*\d+\]\s+is_a\?\(arg1\)\s+NilClass \(Kernel\)$/
    end

    it "no index: should handle object.public_methods" do
      out = nil.public_methods.ai(:plain => true, :index => false).split("\n").grep(/is_a\?/).first
      out.should =~ /^\s+is_a\?\(arg1\)\s+NilClass \(Kernel\)$/
    end
  end

  describe "object.private_methods" do
    it "index: should handle object.private_methods" do
      out = nil.private_methods.ai(:plain => true).split("\n").grep(/sleep/).first
      out.should =~ /^\s+\[\s*\d+\]\s+sleep\(\*arg1\)\s+NilClass \(Kernel\)$/
    end

    it "no index: should handle object.private_methods" do
      out = nil.private_methods.ai(:plain => true, :index => false).split("\n").grep(/sleep/).first
      out.should =~ /^\s+sleep\(\*arg1\)\s+NilClass \(Kernel\)$/
    end
  end

  describe "object.protected_methods" do
    it "index: should handle object.protected_methods" do
      class Hello
        protected
        def m1; end
        def m2; end
      end
      Hello.new.protected_methods.ai(:plain => true).should == "[\n    [0] m1() Hello\n    [1] m2() Hello\n]"
    end

    it "no index: should handle object.protected_methods" do
      class Hello
        protected
        def m3(a,b); end
      end
      if RUBY_VERSION < '1.9.2'
        Hello.new.protected_methods.ai(:plain => true, :index => false).should == "[\n     m3(arg1, arg2) Hello\n]"
      else
        Hello.new.protected_methods.ai(:plain => true, :index => false).should == "[\n     m3(a, b) Hello\n]"
      end
    end
  end

  describe "object.private_methods" do
    it "index: should handle object.private_methods" do
      class Hello
        private
        def m1; end
        def m2; end
      end

      out = Hello.new.private_methods.ai(:plain => true).split("\n").grep(/m\d/)
      out.first.should =~ /^\s+\[\s*\d+\]\s+m1\(\)\s+Hello$/
      out.last.should  =~ /^\s+\[\s*\d+\]\s+m2\(\)\s+Hello$/
    end

    it "no index: should handle object.private_methods" do
      class Hello
        private
        def m3(a,b); end
      end
      out = Hello.new.private_methods.ai(:plain => true).split("\n").grep(/m\d/)
      if RUBY_VERSION < '1.9.2'
        out.first.should =~ /^\s+\[\s*\d+\]\s+m3\(arg1, arg2\)\s+Hello$/
      else
        out.first.should =~ /^\s+\[\s*\d+\]\s+m3\(a, b\)\s+Hello$/
      end
    end
  end

  describe "object.singleton_methods" do
    it "index: should handle object.singleton_methods" do
      class Hello
        class << self
          def m1; end
          def m2; end
        end
      end
      out = Hello.singleton_methods.ai(:plain => true).split("\n").grep(/m\d/)
      out.first.should =~ /^\s+\[\s*\d+\]\s+m1\(\)\s+Hello$/
      out.last.should  =~ /^\s+\[\s*\d+\]\s+m2\(\)\s+Hello$/
    end

    it "no index: should handle object.singleton_methods" do
      class Hello
        def self.m3(a,b); end
      end
      out = Hello.singleton_methods.ai(:plain => true, :index => false).split("\n").grep(/m\d/)
      if RUBY_VERSION < '1.9.2'
        out.first.should =~ /^\s+m3\(arg1, arg2\)\s+Hello$/
      else
        out.first.should =~ /^\s+m3\(a, b\)\s+Hello$/
      end
    end
  end
end

describe "Class methods" do
  before do
    stub_dotfile!
  end

  after do
    Object.instance_eval{ remove_const :Hello } if defined?(Hello)
  end

  describe "class.instance_methods" do
    it "index: should handle unbound class.instance_methods" do
      class Hello
        def m1; end
        def m2; end
      end
      out = Hello.instance_methods.ai(:plain => true).split("\n").grep(/m\d/)
      out.first.should =~ /^\s+\[\s*\d+\]\s+m1\(\)\s+Hello\s\(unbound\)$/
      out.last.should  =~ /^\s+\[\s*\d+\]\s+m2\(\)\s+Hello\s\(unbound\)$/
    end

    it "no index: should handle unbound class.instance_methods" do
      class Hello
        def m3(a,b); end
      end
      out = Hello.instance_methods.ai(:plain => true, :index => false).split("\n").grep(/m\d/)
      if RUBY_VERSION < '1.9.2'
        out.first.should =~ /^\s+m3\(arg1, arg2\)\s+Hello\s\(unbound\)$/
      else
        out.first.should =~ /^\s+m3\(a, b\)\s+Hello\s\(unbound\)$/
      end
    end
  end

  describe "class.public_instance_methods" do
    it "index: should handle class.public_instance_methods" do
      class Hello
        def m1; end
        def m2; end
      end
      out = Hello.public_instance_methods.ai(:plain => true).split("\n").grep(/m\d/)
      out.first.should =~ /^\s+\[\s*\d+\]\s+m1\(\)\s+Hello\s\(unbound\)$/
      out.last.should  =~ /^\s+\[\s*\d+\]\s+m2\(\)\s+Hello\s\(unbound\)$/
    end

    it "no index: should handle class.public_instance_methods" do
      class Hello
        def m3(a,b); end
      end
      out = Hello.public_instance_methods.ai(:plain => true, :index => false).split("\n").grep(/m\d/)
      if RUBY_VERSION < '1.9.2'
        out.first.should =~ /^\s+m3\(arg1, arg2\)\s+Hello\s\(unbound\)$/
      else
        out.first.should =~ /^\s+m3\(a, b\)\s+Hello\s\(unbound\)$/
      end
    end
  end

  describe "class.protected_instance_methods" do
    it "index: should handle class.protected_instance_methods" do
      class Hello
        protected
        def m1; end
        def m2; end
      end
      out = Hello.protected_instance_methods.ai(:plain => true).split("\n").grep(/m\d/)
      out.first.should =~ /^\s+\[\s*\d+\]\s+m1\(\)\s+Hello\s\(unbound\)$/
      out.last.should  =~ /^\s+\[\s*\d+\]\s+m2\(\)\s+Hello\s\(unbound\)$/
    end

    it "no index: should handle class.protected_instance_methods" do
      class Hello
        protected
        def m3(a,b); end
      end
      out = Hello.protected_instance_methods.ai(:plain => true, :index => false).split("\n").grep(/m\d/)
      if RUBY_VERSION < '1.9.2'
        out.first.should =~ /^\s+m3\(arg1, arg2\)\s+Hello\s\(unbound\)$/
      else
        out.first.should =~ /^\s+m3\(a, b\)\s+Hello\s\(unbound\)$/
      end
    end
  end

  describe "class.private_instance_methods" do
    it "index: should handle class.private_instance_methods" do
      class Hello
        private
        def m1; end
        def m2; end
      end
      out = Hello.private_instance_methods.ai(:plain => true).split("\n").grep(/m\d/)
      out.first.should =~ /^\s+\[\s*\d+\]\s+m1\(\)\s+Hello\s\(unbound\)$/
      out.last.should  =~ /^\s+\[\s*\d+\]\s+m2\(\)\s+Hello\s\(unbound\)$/
    end

    it "no index: should handle class.private_instance_methods" do
      class Hello
        private
        def m3(a,b); end
      end
      out = Hello.private_instance_methods.ai(:plain => true, :index => false).split("\n").grep(/m\d/)
      if RUBY_VERSION < '1.9.2'
        out.first.should =~ /^\s+m3\(arg1, arg2\)\s+Hello\s\(unbound\)$/
      else
        out.first.should =~ /^\s+m3\(a, b\)\s+Hello\s\(unbound\)$/
      end
    end
  end
end

if RUBY_VERSION >= '1.9.2'
  describe "Ruby 1.9.2+ Method#parameters" do
    before do
      stub_dotfile!
    end

    after do
      Object.instance_eval{ remove_const :Hello } if defined?(Hello)
    end

    it "()" do
      class Hello
        def m1; end
      end
      out = Hello.new.methods.ai(:plain => true).split("\n").grep(/m1/)
      out.first.should =~ /^\s+\[\s*\d+\]\s+m1\(\)\s+Hello$/
    end

    it ":req" do
      class Hello
        def m1(a, b, c); end
      end
      out = Hello.new.methods.ai(:plain => true).split("\n").grep(/m1/)
      out.first.should =~ /^\s+\[\s*\d+\]\s+m1\(a, b, c\)\s+Hello$/
    end

    it ":opt" do
      class Hello
        def m1(a, b = 1, c = 2); end # m1(a, *b, *c)
      end
      out = Hello.new.methods.ai(:plain => true).split("\n").grep(/m1/)
      out.first.should =~ /^\s+\[\s*\d+\]\s+m1\(a, \*b, \*c\)\s+Hello$/
    end

    it ":rest" do
      class Hello
        def m1(*a); end # m1(*a)
      end
      out = Hello.new.methods.ai(:plain => true).split("\n").grep(/m1/)
      out.first.should =~ /^\s+\[\s*\d+\]\s+m1\(\*a\)\s+Hello$/
    end

    it ":block" do
      class Hello
        def m1(a, b = nil, &blk); end # m1(a, *b, &blk)
      end
      out = Hello.new.methods.ai(:plain => true).split("\n").grep(/m1/)
      out.first.should =~ /^\s+\[\s*\d+\]\s+m1\(a, \*b, &blk\)\s+Hello$/
    end
  end
end

describe "Methods arrays" do
  after do
    Object.instance_eval{ remove_const :Hello } if defined?(Hello)
    Object.instance_eval{ remove_const :World } if defined?(World)
  end

  it "obj1.methods - obj2.methods should be awesome printed" do
    stub_dotfile!
    class Hello
      def self.m1; end
    end
    out = (Hello.methods - Class.methods).ai(:plain => true)
    out.should == "[\n    [0] m1() Hello\n]"
  end

  it "obj1.methods & obj2.methods should be awesome printed" do
    stub_dotfile!
    class Hello
      def self.m1; end
      def self.m2; end
    end
    class World
      def self.m1; end
    end
    out = (Hello.methods & World.methods - Class.methods).ai(:plain => true)
    out.should == "[\n    [0] m1() Hello\n]"
  end

  it "obj1.methods.grep(pattern) should be awesome printed" do
    stub_dotfile!
    class Hello
      def self.m1; end
      def self.m2; end
      def self.m3; end
    end
    out = Hello.methods.grep(/^m1$/).ai(:plain => true)
    out.should == "[\n    [0] m1() Hello\n]"
    out = Hello.methods.grep(/^m\d$/).ai(:plain => true)
    out.should == "[\n    [0] m1() Hello\n    [1] m2() Hello\n    [2] m3() Hello\n]"
  end

  it "obj1.methods.grep(pattern, &block) should pass the matching string within the block" do
    class Hello
      def self.m_one; end
      def self.m_two; end
    end

    out = Hello.methods.grep(/^m_(.+)$/) { $1.to_sym }
    out.should == [:one, :two]
  end

  it "obj1.methods.grep(pattern, &block) should be awesome printed" do
    stub_dotfile!
    class Hello
      def self.m0; end
      def self.none; end
      def self.m1; end
      def self.one; end
    end

    out = Hello.methods.grep(/^m(\d)$/) { %w(none one)[$1.to_i] }.ai(:plain => true)
    out.should == "[\n    [0] none() Hello\n    [1]  one() Hello\n]"
  end

  # See https://github.com/michaeldv/awesome_print/issues/30 for details.
  it "grepping methods and converting them to_sym should work as expected" do
    class Hello
      private
      def him; end

      def his
        private_methods.grep(/^h..$/) { |n| n.to_sym }
      end

      def her
        private_methods.grep(/^.e.$/) { |n| n.to_sym }
      end
    end

    hello = Hello.new
    (hello.send(:his) - hello.send(:her)).sort_by { |x| x.to_s }.should == [ :him, :his ]
  end

  it "appending garbage to methods array should not raise error" do
    arr = 42.methods << [ :wtf ]
    arr.ai(:plain => true).should_not raise_error(TypeError)
    if RUBY_VERSION < '1.9.2'
      arr.ai(:plain => true).should =~ /\s+wtf\(\?\)\s+\?/      # [ :wtf ].to_s => "wtf"
    else
      arr.ai(:plain => true).should =~ /\s+\[:wtf\]\(\?\)\s+\?/ # [ :wtf ].to_s => [:wtf]
    end
  end
end