# -*- encoding: ascii-8bit -*-

describe :regexp_quote, :shared => true do
  it "escapes any characters with special meaning in a regular expression" do
    Regexp.send(@method, '\*?{}.+^[]()- ').should == '\\\\\*\?\{\}\.\+\^\[\]\(\)\-\\ '
    Regexp.send(@method, "\*?{}.+^[]()- ").should == '\\*\\?\\{\\}\\.\\+\\^\\[\\]\\(\\)\\-\\ '
    Regexp.send(@method, '\n\r\f\t').should == '\\\\n\\\\r\\\\f\\\\t'
    Regexp.send(@method, "\n\r\f\t").should == '\\n\\r\\f\\t'
  end

  ruby_version_is "1.9" do
    it "sets the encoding of the result to US-ASCII if there are only US-ASCII characters present in the input String" do
      str = encode("abc", "euc-jp")
      Regexp.send(@method, str).encoding.should == Encoding::US_ASCII
    end

    it "sets the encoding of the result to the encoding of the String if any non-US-ASCII characters are present in an input String with valid encoding" do
      str = encode("ありがとう", "utf-8")
      str.valid_encoding?.should be_true
      Regexp.send(@method, str).encoding.should == Encoding::UTF_8
    end

    it "sets the encoding of the result to ASCII-8BIT if any non-US-ASCII characters are present in an input String with invalid encoding" do
      str = "\xff".force_encoding "us-ascii"
      str.valid_encoding?.should be_false
      Regexp.send(@method, "\xff").encoding.should == Encoding::ASCII_8BIT
    end
  end
end
