ruby--ruby/spec/ruby/core/string/concat_spec.rb

require_relative '../../spec_helper'
require_relative 'fixtures/classes'
require_relative 'shared/concat'

describe "String#concat" do
  it_behaves_like :string_concat, :concat
  it_behaves_like :string_concat_encoding, :concat

  it "takes multiple arguments" do
    str = "hello "
    str.concat "wo", "", "rld"
    str.should == "hello world"
  end

  it "concatenates the initial value when given arguments contain 2 self" do
    str = "hello"
    str.concat str, str
    str.should == "hellohellohello"
  end

  it "returns self when given no arguments" do
    str = "hello"
    str.concat.should equal(str)
    str.should == "hello"
  end
end