File: allocate_spec.rb

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require_relative '../../spec_helper'

describe "Array.allocate" do
  it "returns an instance of Array" do
    ary = Array.allocate
    ary.should be_an_instance_of(Array)
  end

  it "returns a fully-formed instance of Array" do
    ary = Array.allocate
    ary.size.should == 0
    ary << 1
    ary.should == [1]
  end

  it "does not accept any arguments" do
    -> { Array.allocate(1) }.should raise_error(ArgumentError)
  end
end