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: col_test.go
    path of file: ./repos/maroto/pkg/components/col
    
    the code of the file until where you have to start completion: package col_test

import (
	"testing"

	"github.com/stretchr/testify/assert"

	"github.com/johnfercher/maroto/v2/internal/fixture"
	"github.com/johnfercher/maroto/v2/mocks"
	"github.com/johnfercher/maroto/v2/pkg/components/code"
	"github.com/johnfercher/maroto/v2/pkg/components/col"
	"github.com/johnferch
    
func TestNew(t *testing.T) {
	t.Run("when size is not defined, should use is as max", func(t *testing.T) {
		// Act
		c := col.New()

		// Assert
		test.New(t).Assert(c.GetStructure()).Equals("components/cols/new_zero_size.json")
	})
	t.Run("when size is defined, should not use max", func(t *testing.T) {
		// Act
		c := col.New(12)

		// Assert
		test.New(t).Assert(c.GetStructure()).Equals("components/cols/new_defined_size.json")
	})
	t.Run("when has component, should retrieve components", func(t *testing.T) {
		// Act
		c := col.New(12).Add(code.NewQr("code"))

		// Assert
		test.New(t).Assert(c.GetStructure()).Equals("components/cols/new_with_components.json")
	})
	t.Run("when has component, should retrieve components", func(t *testing.T) {
		// Act
		prop := fixture.CellProp()
		c := col.New(12).WithStyle(&prop)

		// Assert
		test.New(t).Assert(c.GetStructure()).Equals("components/cols/new_with_props.json")
	})
}