/*
 * Copyright 2023 CloudWeGo Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package utils

import (
	"strings"
	"testing"

	"github.com/cloudwego/kitex/internal/test"
)

func TestStringBuilder(t *testing.T) {
	sb := &StringBuilder{}
	sb.Grow(4)
	test.Assert(t, sb.Cap() >= 4)
	test.Assert(t, sb.Len() == 0)
	sb.WriteString("1")
	sb.WriteByte('2')
	sb.WriteRune(rune('3'))
	sb.Write([]byte("4"))
	test.Assert(t, sb.Cap() >= 4)
	test.Assert(t, sb.Len() == 4)
	test.Assert(t, sb.String() == "1234")
	sb.Reset()
	test.Assert(t, sb.String() == "")
	test.Assert(t, sb.Cap() == 0)
	test.Assert(t, sb.Len() == 0)

	sb.WithLocked(func(sb *strings.Builder) error {
		sb.Grow(4)
		test.Assert(t, sb.Cap() >= 4)
		test.Assert(t, sb.Len() == 0)
		sb.WriteString("1")
		sb.WriteByte('2')
		sb.WriteRune(rune('3'))
		sb.Write([]byte("4"))
		test.Assert(t, sb.Cap() >= 4)
		test.Assert(t, sb.Len() == 4)
		test.Assert(t, sb.String() == "1234")
		sb.Reset()
		test.Assert(t, sb.String() == "")
		test.Assert(t, sb.Cap() == 0)
		test.Assert(t, sb.Len() == 0)
		return nil
	})
}
