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: rebase_todo_test.go
    path of file: ./repos/lazygit/pkg/utils
    
    the code of the file until where you have to start completion: package utils

import (
	"errors"
	"testing"

	"github.com/fsmiamoto/git-todo-parser/todo"
	"github.com/stretchr/testify/assert"
)

func TestRebaseCommands_moveTodoDown(t *testing.T) {
	type scenario struct {
		testName      string
		todos         []todo.Todo
		shaToMoveDown string
		expectedErr   string
		expectedTodos []todo.Todo
	}

	scenarios := []scenario{
		{
			testName: "simple case 1 - move to beginning",
			todos: []todo.Todo{
				{Command: todo.Pick, Commit: "1234"},
				{Command: todo.Pick, Commit: "5678"},
				{Command: todo.Pick, Commit: "abcd"},
			},
			shaToMoveDown: "5678",
			expectedErr:   "",
			expectedTodos: []todo.Todo{
				{Command: todo.Pick, Commit: "5678"},
				{Command: todo.Pick, Commit: "1234"},
				{Command: todo.Pick, Commit: "abcd"},
			},
		},
		{
			testName: "simple case 2 - move from end",
			todos: []todo.Todo{
				{Command: todo.Pick, Commit: "1234"},
				{Command: todo.Pick, Commit: "5678"},
				{Command: todo.Pick, Commit: "abcd"},
			},
			shaToMoveDown: "abcd",
			ex
    
func TestRebaseCommands_moveTodoDown(t *testing.T) {
	type scenario struct {
		testName      string
		todos         []todo.Todo
		shaToMoveDown string
		expectedErr   string
		expectedTodos []todo.Todo
	}

	scenarios := []scenario{
		{
			testName: "simple case 1 - move to beginning",
			todos: []todo.Todo{
				{Command: todo.Pick, Commit: "1234"},
				{Command: todo.Pick, Commit: "5678"},
				{Command: todo.Pick, Commit: "abcd"},
			},
			shaToMoveDown: "5678",
			expectedErr:   "",
			expectedTodos: []todo.Todo{
				{Command: todo.Pick, Commit: "5678"},
				{Command: todo.Pick, Commit: "1234"},
				{Command: todo.Pick, Commit: "abcd"},
			},
		},
		{
			testName: "simple case 2 - move from end",
			todos: []todo.Todo{
				{Command: todo.Pick, Commit: "1234"},
				{Command: todo.Pick, Commit: "5678"},
				{Command: todo.Pick, Commit: "abcd"},
			},
			shaToMoveDown: "abcd",
			expectedErr:   "",
			expectedTodos: []todo.Todo{
				{Command: todo.Pick, Commit: "1234"},
				{Command: todo.Pick, Commit: "abcd"},
				{Command: todo.Pick, Commit: "5678"},
			},
		},
		{
			testName: "skip an invisible todo",
			todos: []todo.Todo{
				{Command: todo.Pick, Commit: "1234"},
				{Command: todo.Pick, Commit: "abcd"},
				{Command: todo.Label, Label: "myLabel"},
				{Command: todo.Pick, Commit: "5678"},
				{Command: todo.Pick, Commit: "def0"},
			},
			shaToMoveDown: "5678",
			expectedErr:   "",
			expectedTodos: []todo.Todo{
				{Command: todo.Pick, Commit: "1234"},
				{Command: todo.Pick, Commit: "5678"},
				{Command: todo.Pick, Commit: "abcd"},
				{Command: todo.Label, Label: "myLabel"},
				{Command: todo.Pick, Commit: "def0"},
			},
		},

		// Error cases
		{
			testName: "commit not found",
			todos: []todo.Todo{
				{Command: todo.Pick, Commit: "1234"},
				{Command: todo.Pick, Commit: "5678"},
				{Command: todo.Pick, Commit: "abcd"},
			},
			shaToMoveDown: "def0",
			expectedErr:   "Todo def0 not found in git-rebase-todo",
			expectedTodos: []todo.Todo{},
		},
		{
			testName: "trying to move first commit down",
			todos: []todo.Todo{
				{Command: todo.Pick, Commit: "1234"},
				{Command: todo.Pick, Commit: "5678"},
				{Command: todo.Pick, Commit: "abcd"},
			},
			shaToMoveDown: "1234",
			expectedErr:   "Destination position for moving todo is out of range",
			expectedTodos: []todo.Todo{},
		},
		{
			testName: "trying to move commit down when all commits before are invisible",
			todos: []todo.Todo{
				{Command: todo.Label, Label: "myLabel"},
				{Command: todo.Reset, Label: "otherlabel"},
				{Command: todo.Pick, Commit: "1234"},
				{Command: todo.Pick, Commit: "5678"},
			},
			shaToMoveDown: "1234",
			expectedErr:   "Destination position for moving todo is out of range",
			expectedTodos: []todo.Todo{},
		},
	}

	for _, s := range scenarios {
		t.Run(s.testName, func(t *testing.T) {
			rearrangedTodos, err := moveTodoDown(s.todos, s.shaToMoveDown, todo.Pick)
			if s.expectedErr == "" {
				assert.NoError(t, err)
			} else {
				assert.ErrorContains(t, err, s.expectedErr)
			}
			assert.Equal(t, s.expectedTodos, rearrangedTodos)
		},
		)
	}
}