package genparen_test

import (
	"testing"

	"git.jxs.me/leetgo/genparen"
	"github.com/stretchr/testify/require"
)

func TestEmpty(t *testing.T) {
	require.Equal(t, []string{""}, genparen.Gen(0))
}

func TestOne(t *testing.T) {
	require.Equal(t, []string{"()"}, genparen.Gen(1))
}

func TestTwo(t *testing.T) {
	require.Equal(t, []string{"(())", "()()"}, genparen.Gen(2))
}

func TestThree(t *testing.T) {
	require.Equal(t, []string{"((()))", "(()())", "(())()", "()(())", "()()()"}, genparen.Gen(3))
}