You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: tc_num_fmt.rb
    path of file: ./repos/caxlsx/test/stylesheet
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

require 'tc_helper'

class TestNumFmt < Minitest::Test
  def setup
    @item = Axlsx::NumFmt.new
  end

  def teardown; end

  def test_initialiation
    assert_equal(0, @item.numFmtId)
    assert_equal("", @item.formatCode)
  end

  def test_numFmtId
 
    
  def teardown; end

  def test_initialiation
    assert_equal(0, @item.numFmtId)
    assert_equal("", @item.formatCode)
  end

  def test_numFmtId
    assert_raises(ArgumentError) { @item.numFmtId = -1.1 }
    refute_raises { @item.numFmtId = 2 }
    assert_equal(2, @item.numFmtId)
  end

  def test_fomatCode
    assert_raises(ArgumentError) { @item.formatCode = -1.1 }
    refute_raises { @item.formatCode = "0" }
    assert_equal("0", @item.formatCode)
  end
end