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: basic_test.go
    path of file: ./repos/lancet/cryptor
    
    the code of the file until where you have to start completion: package cryptor

import (
	"testing"

	"github.com/duke-git/lancet/v2/internal"
)

func TestBase64StdEncode(t *testing.T) {
	t.Parallel()

	assert := internal.NewAssert
    
func TestSha256(t *testing.T) {
	t.Parallel()

	s := "hello world"
	sha256 := Sha256(s)
	expected := "b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9"

	assert := internal.NewAssert(t, "TestSha256")
	assert.Equal(expected, sha256)
}