# encoding: utf-8
# frozen_string_literal: true
require 'spec_helper'

describe "Utilities Module" do

  include Mail::Utilities

  describe "token safe" do

    describe "checking" do
      it "should return true if a string is token safe" do
        expect(token_safe?('.abc')).to be_truthy
      end

      it "should return false if a string is token safe" do
        expect(token_safe?('?=abc')).to be_falsey
      end

      it "should work with mb_chars" do
        expect(token_safe?('.abc'.mb_chars)).to be_truthy
        expect(token_safe?('?=abc'.mb_chars)).to be_falsey
      end
    end

    describe "quoting" do
      it "should return true if a string is token safe" do
        expect(quote_token('.abc')).to eq '.abc'
      end

      it "should return false if a string is token safe" do
        expect(quote_token('?=abc')).to eq '"?=abc"'
      end

      it "should work with mb_chars" do
        expect(quote_token('.abc'.mb_chars)).to eq '.abc'
        expect(quote_token('?=abc'.mb_chars)).to eq '"?=abc"'
      end
    end

  end

  describe "atom safe" do

    describe "checking" do
      it "should return true if a string is token safe" do
        expect(atom_safe?('?=abc')).to be_truthy
      end

      it "should return false if a string is token safe" do
        expect(atom_safe?('.abc')).to be_falsey
      end

      it "should work with mb_chars" do
        expect(atom_safe?('?=abc'.mb_chars)).to be_truthy
        expect(atom_safe?('.abc'.mb_chars)).to be_falsey
      end
    end

    describe "quoting" do
      it "should return true if a string is token safe" do
        expect(quote_atom('?=abc')).to eq '?=abc'
      end

      it "should return false if a string is token safe" do
        expect(quote_atom('.abc')).to eq '".abc"'
      end

      it "should work with mb_chars" do
        expect(quote_atom('?=abc'.mb_chars)).to eq '?=abc'
        expect(quote_atom('.abc'.mb_chars)).to eq '".abc"'
      end

      it "should work with mb_chars" do
        expect(quote_atom('?=abc'.mb_chars)).to eq '?=abc'
        expect(quote_atom('.abc'.mb_chars)).to eq '".abc"'
      end

      it "should quote white space" do
        expect(quote_atom('ab abc'.mb_chars)).to eq '"ab abc"'
        expect(quote_atom("a\sb\ta\r\nbc".mb_chars)).to eq %{"a\sb\ta\r\nbc"}
      end
    end

  end

  describe "quoting phrases" do
    it "doesn't mutate original string" do
      input_str = "blargh".freeze
      expect { quote_phrase(input_str) }.not_to raise_error
    end

    if RUBY_VERSION >= '1.9'
      describe "given a non-unsafe string" do
        it "should not change the encoding" do
          input_str = "blargh"
          input_str_encoding = input_str.encoding

          result = quote_phrase(input_str)

          expect(result.encoding).to eq input_str_encoding
        end
      end

      describe "given an unsafe string" do
        it "should not change the encoding" do
          input_str = "Bjørn"
          input_str_encoding = input_str.encoding

          result = quote_phrase(input_str)

          expect(result.encoding).to eq input_str_encoding
        end
      end
    end
  end

  describe "escaping parenthesies" do
    it "should escape parens" do
      test = 'This is not (escaped)'
      result = 'This is not \(escaped\)'
      expect(escape_paren(test)).to eq result
    end

    it "should not double escape parens" do
      test = 'This is not \(escaped\)'
      result = 'This is not \(escaped\)'
      expect(escape_paren(test)).to eq result
    end

    it "should escape all parens" do
      test = 'This is not \()escaped(\)'
      result = 'This is not \(\)escaped\(\)'
      expect(escape_paren(test)).to eq result
    end

  end

  describe "unescaping parenthesis" do

    it "should work" do
      test = '(This is a string)'
      result = 'This is a string'
      expect(unparen(test)).to eq result
    end

    it "should work without parens" do
      test = 'This is a string'
      result = 'This is a string'
      expect(unparen(test)).to eq result
    end

    it "should work using ActiveSupport mb_chars" do
      test = '(This is a string)'.mb_chars
      result = 'This is a string'
      expect(unparen(test)).to eq result
    end

    it "should work without parens using ActiveSupport mb_chars" do
      test = 'This is a string'.mb_chars
      result = 'This is a string'
      expect(unparen(test)).to eq result
    end

  end

  describe "unescaping brackets" do

    it "should work" do
      test = '<This is a string>'
      result = 'This is a string'
      expect(unbracket(test)).to eq result
    end

    it "should work without brackets" do
      test = 'This is a string'
      result = 'This is a string'
      expect(unbracket(test)).to eq result
    end

    it "should work using ActiveSupport mb_chars" do
      test = '<This is a string>'.mb_chars
      result = 'This is a string'
      expect(unbracket(test)).to eq result
    end

    it "should work without parens using ActiveSupport mb_chars" do
      test = 'This is a string'.mb_chars
      result = 'This is a string'
      expect(unbracket(test)).to eq(result)
    end

  end

  describe "quoting phrases" do
    it "should quote a phrase if it is unsafe" do
      test = 'this.needs quoting'
      result = '"this.needs quoting"'
      expect(dquote(test)).to eq result
    end

    it "should properly quote a string, even if quoted but not escaped properly" do
      test = '"this needs "escaping"'
      result = '"this needs \"escaping"'
      expect(dquote(test)).to eq result
    end

    it "should quote correctly a phrase with an escaped quote in it" do
      test = 'this needs \"quoting'
      result = '"this needs \\\\\\"quoting"'
      expect(dquote(test)).to eq result
    end

    it "should quote correctly a phrase with an escaped backslash followed by an escaped quote in it" do
      test = 'this needs \\\"quoting'
      result = '"this needs \\\\\\\\\\"quoting"'
      expect(dquote(test)).to eq result
    end
  end

  describe "unquoting phrases" do
    it "should remove quotes from the edge" do
      expect(unquote('"This is quoted"')).to eq 'This is quoted'
    end

    it "should remove backslash escaping from quotes" do
      expect(unquote('"This is \\"quoted\\""')).to eq 'This is "quoted"'
    end

    it "should remove backslash escaping from any char" do
      expect(unquote('"This is \\quoted"')).to eq 'This is quoted'
    end

    it "should be able to handle unquoted strings" do
      expect(unquote('This is not quoted')).to eq 'This is not quoted'
    end

    it "should preserve backslashes in unquoted strings" do
      expect(unquote('This is not \"quoted')).to eq 'This is not \"quoted'
    end

    it "should be able to handle unquoted quotes" do
      expect(unquote('"This is "quoted"')).to eq 'This is "quoted'
    end
  end


  describe "parenthesizing phrases" do
    it "should parenthesize a phrase" do
      test = 'this.needs parenthesizing'
      result = '(this.needs parenthesizing)'
      expect(paren(test)).to eq result
    end

    it "should properly parenthesize a string, and escape properly" do
      test = 'this needs (escaping'
      result = '(this needs \(escaping)'
      expect(paren(test)).to eq result
    end

    it "should properly parenthesize a string, and escape properly (other way)" do
      test = 'this needs )escaping'
      result = '(this needs \)escaping)'
      expect(paren(test)).to eq result
    end

    it "should properly parenthesize a string, even if parenthesized but not escaped properly" do
      test = '(this needs (escaping)'
      result = '(this needs \(escaping)'
      expect(paren(test)).to eq result
    end

    it "should properly parenthesize a string, even if parenthesized but not escaped properly (other way)" do
      test = '(this needs )escaping)'
      result = '(this needs \)escaping)'
      expect(paren(test)).to eq result
    end

    it "should parenthesize correctly a phrase with an escaped parentheses in it" do
      test = 'this needs \(parenthesizing'
      result = '(this needs \(parenthesizing)'
      expect(paren(test)).to eq result
    end

    it "should parenthesize correctly a phrase with an escaped parentheses in it (other way)" do
      test = 'this needs \)parenthesizing'
      result = '(this needs \)parenthesizing)'
      expect(paren(test)).to eq result
    end

    it "should parenthesize correctly a phrase with an escaped backslash followed by an escaped parentheses in it" do
      test = 'this needs \\\(parenthesizing'
      result = '(this needs \\\(parenthesizing)'
      expect(paren(test)).to eq result
    end

    it "should parenthesize correctly a phrase with an escaped backslash followed by an escaped parentheses in it (other way)" do
      test = 'this needs \\\)parenthesizing'
      result = '(this needs \\\)parenthesizing)'
      expect(paren(test)).to eq result
    end

    it "should parenthesize correctly a phrase with a set of parentheses" do
      test = 'this (needs) parenthesizing'
      result = '(this \(needs\) parenthesizing)'
      expect(paren(test)).to eq result
    end

  end


  describe "bracketizing phrases" do
    it "should bracketize a phrase" do
      test = 'this.needs bracketizing'
      result = '<this.needs bracketizing>'
      expect(bracket(test)).to eq result
    end

    it "should properly bracketize a string, and escape properly" do
      test = 'this needs <escaping'
      result = '<this needs \<escaping>'
      expect(bracket(test)).to eq result
    end

    it "should properly bracketize a string, and escape properly (other way)" do
      test = 'this needs >escaping'
      result = '<this needs \>escaping>'
      expect(bracket(test)).to eq result
    end

    it "should properly bracketize a string, even if bracketized but not escaped properly" do
      test = '<this needs <escaping>'
      result = '<this needs \<escaping>'
      expect(bracket(test)).to eq result
    end

    it "should properly bracketize a string, even if bracketized but not escaped properly (other way)" do
      test = '<this needs >escaping>'
      result = '<this needs \>escaping>'
      expect(bracket(test)).to eq result
    end

    it "should bracketize correctly a phrase with an escaped brackets in it" do
      test = 'this needs \<bracketizing'
      result = '<this needs \<bracketizing>'
      expect(bracket(test)).to eq result
    end

    it "should bracketize correctly a phrase with an escaped brackets in it (other way)" do
      test = 'this needs \>bracketizing'
      result = '<this needs \>bracketizing>'
      expect(bracket(test)).to eq result
    end

    it "should bracketize correctly a phrase with an escaped backslash followed by an escaped brackets in it" do
      test = 'this needs \\\<bracketizing'
      result = '<this needs \\\<bracketizing>'
      expect(bracket(test)).to eq result
    end

    it "should bracketize correctly a phrase with an escaped backslash followed by an escaped brackets in it (other way)" do
      test = 'this needs \\\>bracketizing'
      result = '<this needs \\\>bracketizing>'
      expect(bracket(test)).to eq result
    end

    it "should bracketize correctly a phrase with a set of brackets" do
      test = 'this <needs> bracketizing'
      result = '<this \<needs\> bracketizing>'
      expect(bracket(test)).to eq result
    end

  end

  describe "url escaping" do
    uri_parser = URI.const_defined?(:Parser) ? URI::Parser.new : URI

    it "should have a wrapper on URI.escape" do
      expect(uri_escape("@?@!")).to eq uri_parser.escape("@?@!")
    end

    it "should have a wrapper on URI.unescape" do
      expect(uri_unescape("@?@!")).to eq uri_parser.unescape("@?@!")
    end
  end


  describe "blank method" do
    it "should say nil is blank" do
      expect(Mail::Utilities.blank?(nil)).to be_truthy
    end

    it "should say false is blank" do
      expect(Mail::Utilities.blank?(false)).to be_truthy
    end

    it "should say true is not blank" do
      expect(Mail::Utilities.blank?(true)).not_to be_truthy
    end

    it "should say an empty array is blank" do
      expect(Mail::Utilities.blank?([])).to be_truthy
    end

    it "should say an empty hash is blank" do
      expect(Mail::Utilities.blank?({})).to be_truthy
    end

    it "should say an empty string is blank" do
      expect(Mail::Utilities.blank?('')).to be_truthy
      expect(Mail::Utilities.blank?(" ")).to be_truthy
      a = ' ' * 1000
      expect(Mail::Utilities.blank?(a)).to be_truthy
      expect(Mail::Utilities.blank?("\t \n\n")).to be_truthy
    end
  end

  describe "not blank method" do
    it "should say a number is not blank" do
      expect(Mail::Utilities.blank?(1)).not_to be_truthy
    end

    it "should say a valueless hash is not blank" do
      expect(Mail::Utilities.blank?({:one => nil, :two => nil})).not_to be_truthy
    end

    it "should say a hash containing an empty hash is not blank" do
      expect(Mail::Utilities.blank?({:key => {}})).not_to be_truthy
    end
  end

  describe "to_lf" do
    it "should change a single CR to LF" do
      expect(Mail::Utilities.to_lf("\r")).to eq "\n"
    end

    it "should change multiple LF to CRLF" do
      expect(Mail::Utilities.to_lf("\r\r")).to eq "\n\n"
    end

    it "should change a single CRLF to LF" do
      expect(Mail::Utilities.to_lf("\r\n")).to eq "\n"
    end

    it "should change multiple CR to LF" do
      expect(Mail::Utilities.to_lf("\r\n\r\n")).to eq "\n\n"
    end

    it "should not change LF" do
      expect(Mail::Utilities.to_lf("\n")).to eq "\n"
    end

    it "should not change multiple CRLF" do
      expect(Mail::Utilities.to_lf("\n\n")).to eq "\n\n"
    end

    it "should handle a mix" do
      expect(Mail::Utilities.to_lf("\r \n\r\n")).to eq "\n \n\n"
    end

    if defined?(Encoding)
      it "should not change the encoding of the string" do
        saved_default_internal = Encoding.default_internal
        Encoding.default_internal = "UTF-8"
        ascii_string = "abcd".dup.force_encoding("ASCII-8BIT")
        expect(Mail::Utilities.to_lf(ascii_string).encoding).to eq(Encoding::ASCII_8BIT)
        Encoding.default_internal = saved_default_internal
      end
    end

    describe "to_lf method on String" do
      it "should leave lf as lf" do
        expect(Mail::Utilities.to_lf("\n")).to eq "\n"
      end

      it "should clean just cr to lf" do
        expect(Mail::Utilities.to_lf("\r")).to eq "\n"
      end

      it "should leave crlf as lf" do
        expect(Mail::Utilities.to_lf("\r\n")).to eq "\n"
      end

      it "should handle japanese characters" do
        string = "\343\201\202\343\201\210\343\201\206\343\201\210\343\201\212\r\n\r\n\343\201\213\343\201\215\343\201\217\343\201\221\343\201\223\r\n\r\n\343\201\225\343\201\227\343\201\244\343\201\233\343\201\235\r\n\r\n"
        expect(Mail::Utilities.to_lf(string)).to eq "\343\201\202\343\201\210\343\201\206\343\201\210\343\201\212\n\n\343\201\213\343\201\215\343\201\217\343\201\221\343\201\223\n\n\343\201\225\343\201\227\343\201\244\343\201\233\343\201\235\n\n"
      end
    end

    describe "methods on NilClass" do
      it "should return empty string on to_lf" do
        expect(Mail::Utilities.to_lf(nil)).to eq ''
      end
    end

    describe "methods on subclass" do
      it "should return String not subclass" do
        klass = Class.new(String)
        string = klass.new('')
        expect(Mail::Utilities.to_lf(string)).to be_an_instance_of(String)
      end
    end

  end

  describe "to_crlf" do

    describe "to_crlf method on String" do
      it "should clean just lf to crlf" do
        expect(Mail::Utilities.to_crlf("\n")).to eq "\r\n"
      end

      it "should clean just cr to crlf" do
        expect(Mail::Utilities.to_crlf("\r")).to eq "\r\n"
      end

      it "should leave crlf as crlf" do
        expect(Mail::Utilities.to_crlf("\r\n")).to eq "\r\n"
      end

      it "should handle japanese characters" do
        string = "\343\201\202\343\201\210\343\201\206\343\201\210\343\201\212\r\n\r\n\343\201\213\343\201\215\343\201\217\343\201\221\343\201\223\r\n\r\n\343\201\225\343\201\227\343\201\244\343\201\233\343\201\235\r\n\r\n"
        expect(Mail::Utilities.to_crlf(string)).to eq "\343\201\202\343\201\210\343\201\206\343\201\210\343\201\212\r\n\r\n\343\201\213\343\201\215\343\201\217\343\201\221\343\201\223\r\n\r\n\343\201\225\343\201\227\343\201\244\343\201\233\343\201\235\r\n\r\n"
      end

      if defined?(Encoding)
        it "should not change the encoding of the string" do
          saved_default_internal = Encoding.default_internal
          Encoding.default_internal = "UTF-8"
          ascii_string = "abcd".dup.force_encoding("ASCII-8BIT")
          expect(Mail::Utilities.to_crlf(ascii_string).encoding).to eq(Encoding::ASCII_8BIT)
          Encoding.default_internal = saved_default_internal
        end
      end

    end

    describe "methods on NilClass" do
      it "should return empty string on to_crlf" do
        expect(Mail::Utilities.to_crlf(nil)).to eq ''
      end
    end

    describe "methods on subclass" do
      it "should return String not subclass" do
        klass = Class.new(String)
        string = klass.new('')
        expect(Mail::Utilities.to_crlf(string)).to be_an_instance_of(String)
      end
    end

    describe "to_crlf" do

      it "should change a single LF to CRLF" do
        expect(Mail::Utilities.to_crlf("\n")).to eq "\r\n"
      end

      it "should change multiple LF to CRLF" do
        expect(Mail::Utilities.to_crlf("\n\n")).to eq "\r\n\r\n"
      end

      it "should change a single CR to CRLF" do
        expect(Mail::Utilities.to_crlf("\r")).to eq "\r\n"
      end

      it "should not change CRLF" do
        expect(Mail::Utilities.to_crlf("\r\n")).to eq "\r\n"
      end

      it "should not change multiple CRLF" do
        expect(Mail::Utilities.to_crlf("\r\n\r\n")).to eq "\r\n\r\n"
      end

      it "should handle a mix" do
        expect(Mail::Utilities.to_crlf("\r \n\r\n")).to eq "\r\n \r\n\r\n"
      end
    end

  end

end