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class TestCallExpression < Test::Unit::TestCase
  def setup
    @arguments = [
      Arrow::FieldExpression.new("augend"),
      Arrow::FieldExpression.new("addend"),
    ]
    @expression = Arrow::CallExpression.new("add", @arguments)
  end

  sub_test_case("==") do
    def test_true
      assert_equal(Arrow::CallExpression.new("now", []),
                   Arrow::CallExpression.new("now", []))
    end

    def test_false
      assert_not_equal(Arrow::CallExpression.new("a", []),
                       Arrow::CallExpression.new("b", []))
    end
  end

  def test_to_string
    assert_equal("add(augend, addend)", @expression.to_s)
  end
end