require "test_helper"
require "unifier_assertion"

class UnifierAssertionTest < ActiveSupport::TestCase
  include UnifierAssertion
  
  test "unifier" do
    assert_equal({:"'a" => 1 },
                 unify([[
                         [1,2,3],
                         [:"'a",2,3]
                        ]]))
    assert_equal({:"'a" => "':b" },
                 unify([[
                         ["':b",2,3],
                         [:"'a",2,3]
                        ]]))
    assert_equal({:"'a" => [1]},
                 unify([
                        [:"'a", [1]]
                       ]))
    assert_equal({:"'a" => [1], :"'b" => [1]},
                 unify([
                        [:"'a", [1]],
                        [:"'b", :"'a"]]))
    assert_equal({:"'a" => Time.new(2011,1,1) },
                 unify([[
                         { :created_at => :a, :updated_at => :"'a", },
                         { :created_at => Time.new(2011,1,1), :updated_at => Time.new(2011,1,1) },
                        ]]))
    assert_nil(unify([[
                       { :created_at => :"'a", :updated_at => :"'a", },
                       { :created_at => Time.new(2011,1,1), :updated_at => Time.new(2011,1,2) },
                      ]]))
  end
end