// Copyright (C) 2022-2023  Luke Shumaker <lukeshu@lukeshu.com>
//
// SPDX-License-Identifier: GPL-2.0-or-later

package lowmemjson

import (
	"strings"
	"testing"

	"github.com/stretchr/testify/assert"
)

func TestEncoder(t *testing.T) {
	t.Parallel()
	var out strings.Builder
	enc := NewEncoder(&out)

	assert.NoError(t, enc.Encode(1))
	assert.NoError(t, enc.Encode(1))
	assert.NoError(t, enc.Encode(struct{}{}))
	assert.NoError(t, enc.Encode(nil))
	assert.NoError(t, enc.Encode(1))
	assert.Equal(t, "1\n1{}null1", out.String())
}

func TestEncoderIndent(t *testing.T) {
	t.Parallel()
	var out strings.Builder
	enc := NewEncoder(NewReEncoder(&out, ReEncoderConfig{
		AllowMultipleValues: true,
		Indent:              "\t",
	}))

	assert.NoError(t, enc.Encode(1))
	assert.NoError(t, enc.Encode(2))
	assert.NoError(t, enc.Encode(struct{}{}))
	assert.NoError(t, enc.Encode([]int{9}))
	assert.NoError(t, enc.Encode(nil))
	assert.NoError(t, enc.Encode(1))
	assert.Equal(t, "1\n2\n{}\n[\n\t9\n]\nnull\n1", out.String())
}

func TestEncode(t *testing.T) {
	t.Parallel()
	var out strings.Builder

	assert.NoError(t, NewEncoder(&out).Encode(1))
	assert.NoError(t, NewEncoder(&out).Encode(1))
	assert.NoError(t, NewEncoder(&out).Encode(struct{}{}))
	assert.NoError(t, NewEncoder(&out).Encode(nil))
	assert.NoError(t, NewEncoder(&out).Encode(1))
	assert.Equal(t, "11{}null1", out.String())
}