package gjson

import (
	"bytes"
	"encoding/hex"
	"encoding/json"
	"fmt"
	"io"
	"math/rand"
	"strings"
	"testing"
	"time"

	"github.com/buger/jsonparser"
	jsoniter "github.com/json-iterator/go"
	"github.com/mailru/easyjson/jlexer"
	fflib "github.com/pquerna/ffjson/fflib/v1"
)

// TestRandomData is a fuzzing test that throws random data at the Parse
// function looking for panics.
func TestRandomData(t *testing.T) {
	var lstr string
	defer func() {
		if v := recover(); v != nil {
			println("'" + hex.EncodeToString([]byte(lstr)) + "'")
			println("'" + lstr + "'")
			panic(v)
		}
	}()
	rand.Seed(time.Now().UnixNano())
	b := make([]byte, 200)
	for i := 0; i < 2000000; i++ {
		n, err := rand.Read(b[:rand.Int()%len(b)])
		if err != nil {
			t.Fatal(err)
		}
		lstr = string(b[:n])
		GetBytes([]byte(lstr), "zzzz")
		Parse(lstr)
	}
}

func TestRandomValidStrings(t *testing.T) {
	rand.Seed(time.Now().UnixNano())
	b := make([]byte, 200)
	for i := 0; i < 100000; i++ {
		n, err := rand.Read(b[:rand.Int()%len(b)])
		if err != nil {
			t.Fatal(err)
		}
		sm, err := json.Marshal(string(b[:n]))
		if err != nil {
			t.Fatal(err)
		}
		var su string
		if err := json.Unmarshal([]byte(sm), &su); err != nil {
			t.Fatal(err)
		}
		token := Get(`{"str":`+string(sm)+`}`, "str")
		if token.Type != String || token.Str != su {
			println("["+token.Raw+"]", "["+token.Str+"]", "["+su+"]", "["+string(sm)+"]")
			t.Fatal("string mismatch")
		}
	}
}

func TestEmoji(t *testing.T) {
	const input = `{"utf8":"Example emoji, KO: \ud83d\udd13, \ud83c\udfc3 OK: \u2764\ufe0f "}`
	value := Get(input, "utf8")
	var s string
	json.Unmarshal([]byte(value.Raw), &s)
	if value.String() != s {
		t.Fatalf("expected '%v', got '%v'", s, value.String())
	}
}

func testEscapePath(t *testing.T, json, path, expect string) {
	if Get(json, path).String() != expect {
		t.Fatalf("expected '%v', got '%v'", expect, Get(json, path).String())
	}
}

func TestEscapePath(t *testing.T) {
	json := `{
		"test":{
			"*":"valZ",
			"*v":"val0",
			"keyv*":"val1",
			"key*v":"val2",
			"keyv?":"val3",
			"key?v":"val4",
			"keyv.":"val5",
			"key.v":"val6",
			"keyk*":{"key?":"val7"}
		}
	}`

	testEscapePath(t, json, "test.\\*", "valZ")
	testEscapePath(t, json, "test.\\*v", "val0")
	testEscapePath(t, json, "test.keyv\\*", "val1")
	testEscapePath(t, json, "test.key\\*v", "val2")
	testEscapePath(t, json, "test.keyv\\?", "val3")
	testEscapePath(t, json, "test.key\\?v", "val4")
	testEscapePath(t, json, "test.keyv\\.", "val5")
	testEscapePath(t, json, "test.key\\.v", "val6")
	testEscapePath(t, json, "test.keyk\\*.key\\?", "val7")
}

// this json block is poorly formed on purpose.
var basicJSON = `{"age":100, "name":{"here":"B\\\"R"},
	"noop":{"what is a wren?":"a bird"},
	"happy":true,"immortal":false,
	"items":[1,2,3,{"tags":[1,2,3],"points":[[1,2],[3,4]]},4,5,6,7],
	"arr":["1",2,"3",{"hello":"world"},"4",5],
	"vals":[1,2,3,{"sadf":sdf"asdf"}],"name":{"first":"tom","last":null},
	"created":"2014-05-16T08:28:06.989Z",
	"loggy":{
		"programmers": [
    	    {
    	        "firstName": "Brett",
    	        "lastName": "McLaughlin",
    	        "email": "aaaa",
				"tag": "good"
    	    },
    	    {
    	        "firstName": "Jason",
    	        "lastName": "Hunter",
    	        "email": "bbbb",
				"tag": "bad"
    	    },
    	    {
    	        "firstName": "Elliotte",
    	        "lastName": "Harold",
    	        "email": "cccc",
				"tag":, "good"
    	    },
			{
				"firstName": 1002.3,
				"age": 101
			}
    	]
	},
	"lastly":{"yay":"final"}
}`
var basicJSONB = []byte(basicJSON)

func TestTimeResult(t *testing.T) {
	assert(t, Get(basicJSON, "created").String() == Get(basicJSON, "created").Time().Format(time.RFC3339Nano))
}

func TestParseAny(t *testing.T) {
	assert(t, Parse("100").Float() == 100)
	assert(t, Parse("true").Bool())
	assert(t, Parse("valse").Bool() == false)
}

func TestManyVariousPathCounts(t *testing.T) {
	json := `{"a":"a","b":"b","c":"c"}`
	counts := []int{3, 4, 7, 8, 9, 15, 16, 17, 31, 32, 33, 63, 64, 65, 127, 128, 129, 255, 256, 257, 511, 512, 513}
	paths := []string{"a", "b", "c"}
	expects := []string{"a", "b", "c"}
	for _, count := range counts {
		var gpaths []string
		var gexpects []string
		for i := 0; i < count; i++ {
			if i < len(paths) {
				gpaths = append(gpaths, paths[i])
				gexpects = append(gexpects, expects[i])
			} else {
				gpaths = append(gpaths, fmt.Sprintf("not%d", i))
				gexpects = append(gexpects, "null")
			}
		}
		results := GetMany(json, gpaths...)
		for i := 0; i < len(paths); i++ {
			if results[i].String() != expects[i] {
				t.Fatalf("expected '%v', got '%v'", expects[i], results[i].String())
			}
		}
	}
}
func TestManyRecursion(t *testing.T) {
	var json string
	var path string
	for i := 0; i < 100; i++ {
		json += `{"a":`
		path += ".a"
	}
	json += `"b"`
	for i := 0; i < 100; i++ {
		json += `}`
	}
	path = path[1:]
	assert(t, GetMany(json, path)[0].String() == "b")
}
func TestByteSafety(t *testing.T) {
	jsonb := []byte(`{"name":"Janet","age":38}`)
	mtok := GetBytes(jsonb, "name")
	if mtok.String() != "Janet" {
		t.Fatalf("expected %v, got %v", "Jason", mtok.String())
	}
	mtok2 := GetBytes(jsonb, "age")
	if mtok2.Raw != "38" {
		t.Fatalf("expected %v, got %v", "Jason", mtok2.Raw)
	}
	jsonb[9] = 'T'
	jsonb[12] = 'd'
	jsonb[13] = 'y'
	if mtok.String() != "Janet" {
		t.Fatalf("expected %v, got %v", "Jason", mtok.String())
	}
}

func get(json, path string) Result {
	return GetBytes([]byte(json), path)
}

func TestBasic(t *testing.T) {
	var mtok Result
	mtok = get(basicJSON, `loggy.programmers.#[tag="good"].firstName`)
	if mtok.String() != "Brett" {
		t.Fatalf("expected %v, got %v", "Brett", mtok.String())
	}
	mtok = get(basicJSON, `loggy.programmers.#[tag="good"]#.firstName`)
	if mtok.String() != `["Brett","Elliotte"]` {
		t.Fatalf("expected %v, got %v", `["Brett","Elliotte"]`, mtok.String())
	}
}
func TestTypes(t *testing.T) {
	assert(t, (Result{Type: String}).Type.String() == "String")
	assert(t, (Result{Type: Number}).Type.String() == "Number")
	assert(t, (Result{Type: Null}).Type.String() == "Null")
	assert(t, (Result{Type: False}).Type.String() == "False")
	assert(t, (Result{Type: True}).Type.String() == "True")
	assert(t, (Result{Type: JSON}).Type.String() == "JSON")
	assert(t, (Result{Type: 100}).Type.String() == "")
	// bool
	assert(t, (Result{Type: String, Str: "true"}).Bool())
	assert(t, (Result{Type: True}).Bool())
	assert(t, (Result{Type: False}).Bool() == false)
	assert(t, (Result{Type: Number, Num: 1}).Bool())
	// int
	assert(t, (Result{Type: String, Str: "1"}).Int() == 1)
	assert(t, (Result{Type: True}).Int() == 1)
	assert(t, (Result{Type: False}).Int() == 0)
	assert(t, (Result{Type: Number, Num: 1}).Int() == 1)
	// uint
	assert(t, (Result{Type: String, Str: "1"}).Uint() == 1)
	assert(t, (Result{Type: True}).Uint() == 1)
	assert(t, (Result{Type: False}).Uint() == 0)
	assert(t, (Result{Type: Number, Num: 1}).Uint() == 1)
	// float
	assert(t, (Result{Type: String, Str: "1"}).Float() == 1)
	assert(t, (Result{Type: True}).Float() == 1)
	assert(t, (Result{Type: False}).Float() == 0)
	assert(t, (Result{Type: Number, Num: 1}).Float() == 1)
}
func TestForEach(t *testing.T) {
	Result{}.ForEach(nil)
	Result{Type: String, Str: "Hello"}.ForEach(func(_, value Result) bool {
		assert(t, value.String() == "Hello")
		return false
	})
	Result{Type: JSON, Raw: "*invalid*"}.ForEach(nil)

	json := ` {"name": {"first": "Janet","last": "Prichard"},
	"asd\nf":"\ud83d\udd13","age": 47}`
	var count int
	ParseBytes([]byte(json)).ForEach(func(key, value Result) bool {
		count++
		return true
	})
	assert(t, count == 3)
	ParseBytes([]byte(`{"bad`)).ForEach(nil)
	ParseBytes([]byte(`{"ok":"bad`)).ForEach(nil)
}
func TestMap(t *testing.T) {
	assert(t, len(ParseBytes([]byte(`"asdf"`)).Map()) == 0)
	assert(t, ParseBytes([]byte(`{"asdf":"ghjk"`)).Map()["asdf"].String() == "ghjk")
	assert(t, len(Result{Type: JSON, Raw: "**invalid**"}.Map()) == 0)
	assert(t, Result{Type: JSON, Raw: "**invalid**"}.Value() == nil)
	assert(t, Result{Type: JSON, Raw: "{"}.Map() != nil)
}
func TestBasic1(t *testing.T) {
	mtok := get(basicJSON, `loggy.programmers`)
	var count int
	mtok.ForEach(func(key, value Result) bool {
		if key.Exists() {
			t.Fatalf("expected %v, got %v", false, key.Exists())
		}
		count++
		if count == 3 {
			return false
		}
		if count == 1 {
			i := 0
			value.ForEach(func(key, value Result) bool {
				switch i {
				case 0:
					if key.String() != "firstName" || value.String() != "Brett" {
						t.Fatalf("expected %v/%v got %v/%v", "firstName", "Brett", key.String(), value.String())
					}
				case 1:
					if key.String() != "lastName" || value.String() != "McLaughlin" {
						t.Fatalf("expected %v/%v got %v/%v", "lastName", "McLaughlin", key.String(), value.String())
					}
				case 2:
					if key.String() != "email" || value.String() != "aaaa" {
						t.Fatalf("expected %v/%v got %v/%v", "email", "aaaa", key.String(), value.String())
					}
				}
				i++
				return true
			})
		}
		return true
	})
	if count != 3 {
		t.Fatalf("expected %v, got %v", 3, count)
	}
}
func TestBasic2(t *testing.T) {
	mtok := get(basicJSON, `loggy.programmers.#[age=101].firstName`)
	if mtok.String() != "1002.3" {
		t.Fatalf("expected %v, got %v", "1002.3", mtok.String())
	}
	mtok = get(basicJSON, `loggy.programmers.#[firstName != "Brett"].firstName`)
	if mtok.String() != "Jason" {
		t.Fatalf("expected %v, got %v", "Jason", mtok.String())
	}
	mtok = get(basicJSON, `loggy.programmers.#[firstName % "Bre*"].email`)
	if mtok.String() != "aaaa" {
		t.Fatalf("expected %v, got %v", "aaaa", mtok.String())
	}
	mtok = get(basicJSON, `loggy.programmers.#[firstName == "Brett"].email`)
	if mtok.String() != "aaaa" {
		t.Fatalf("expected %v, got %v", "aaaa", mtok.String())
	}
	mtok = get(basicJSON, "loggy")
	if mtok.Type != JSON {
		t.Fatalf("expected %v, got %v", JSON, mtok.Type)
	}
	if len(mtok.Map()) != 1 {
		t.Fatalf("expected %v, got %v", 1, len(mtok.Map()))
	}
	programmers := mtok.Map()["programmers"]
	if programmers.Array()[1].Map()["firstName"].Str != "Jason" {
		t.Fatalf("expected %v, got %v", "Jason", mtok.Map()["programmers"].Array()[1].Map()["firstName"].Str)
	}
}
func TestBasic3(t *testing.T) {
	var mtok Result
	if Parse(basicJSON).Get("loggy.programmers").Get("1").Get("firstName").Str != "Jason" {
		t.Fatalf("expected %v, got %v", "Jason", Parse(basicJSON).Get("loggy.programmers").Get("1").Get("firstName").Str)
	}
	var token Result
	if token = Parse("-102"); token.Num != -102 {
		t.Fatalf("expected %v, got %v", -102, token.Num)
	}
	if token = Parse("102"); token.Num != 102 {
		t.Fatalf("expected %v, got %v", 102, token.Num)
	}
	if token = Parse("102.2"); token.Num != 102.2 {
		t.Fatalf("expected %v, got %v", 102.2, token.Num)
	}
	if token = Parse(`"hello"`); token.Str != "hello" {
		t.Fatalf("expected %v, got %v", "hello", token.Str)
	}
	if token = Parse(`"\"he\nllo\""`); token.Str != "\"he\nllo\"" {
		t.Fatalf("expected %v, got %v", "\"he\nllo\"", token.Str)
	}
	mtok = get(basicJSON, "loggy.programmers.#.firstName")
	if len(mtok.Array()) != 4 {
		t.Fatalf("expected 4, got %v", len(mtok.Array()))
	}
	for i, ex := range []string{"Brett", "Jason", "Elliotte", "1002.3"} {
		if mtok.Array()[i].String() != ex {
			t.Fatalf("expected '%v', got '%v'", ex, mtok.Array()[i].String())
		}
	}
	mtok = get(basicJSON, "loggy.programmers.#.asd")
	if mtok.Type != JSON {
		t.Fatalf("expected %v, got %v", JSON, mtok.Type)
	}
	if len(mtok.Array()) != 0 {
		t.Fatalf("expected 0, got %v", len(mtok.Array()))
	}
}
func TestBasic4(t *testing.T) {
	if get(basicJSON, "items.3.tags.#").Num != 3 {
		t.Fatalf("expected 3, got %v", get(basicJSON, "items.3.tags.#").Num)
	}
	if get(basicJSON, "items.3.points.1.#").Num != 2 {
		t.Fatalf("expected 2, got %v", get(basicJSON, "items.3.points.1.#").Num)
	}
	if get(basicJSON, "items.#").Num != 8 {
		t.Fatalf("expected 6, got %v", get(basicJSON, "items.#").Num)
	}
	if get(basicJSON, "vals.#").Num != 4 {
		t.Fatalf("expected 4, got %v", get(basicJSON, "vals.#").Num)
	}
	if !get(basicJSON, "name.last").Exists() {
		t.Fatal("expected true, got false")
	}
	token := get(basicJSON, "name.here")
	if token.String() != "B\\\"R" {
		t.Fatal("expecting 'B\\\"R'", "got", token.String())
	}
	token = get(basicJSON, "arr.#")
	if token.String() != "6" {
		t.Fatal("expecting '6'", "got", token.String())
	}
	token = get(basicJSON, "arr.3.hello")
	if token.String() != "world" {
		t.Fatal("expecting 'world'", "got", token.String())
	}
	_ = token.Value().(string)
	token = get(basicJSON, "name.first")
	if token.String() != "tom" {
		t.Fatal("expecting 'tom'", "got", token.String())
	}
	_ = token.Value().(string)
	token = get(basicJSON, "name.last")
	if token.String() != "" {
		t.Fatal("expecting ''", "got", token.String())
	}
	if token.Value() != nil {
		t.Fatal("should be nil")
	}
}
func TestBasic5(t *testing.T) {
	token := get(basicJSON, "age")
	if token.String() != "100" {
		t.Fatal("expecting '100'", "got", token.String())
	}
	_ = token.Value().(float64)
	token = get(basicJSON, "happy")
	if token.String() != "true" {
		t.Fatal("expecting 'true'", "got", token.String())
	}
	_ = token.Value().(bool)
	token = get(basicJSON, "immortal")
	if token.String() != "false" {
		t.Fatal("expecting 'false'", "got", token.String())
	}
	_ = token.Value().(bool)
	token = get(basicJSON, "noop")
	if token.String() != `{"what is a wren?":"a bird"}` {
		t.Fatal("expecting '"+`{"what is a wren?":"a bird"}`+"'", "got", token.String())
	}
	_ = token.Value().(map[string]interface{})

	if get(basicJSON, "").Value() != nil {
		t.Fatal("should be nil")
	}

	get(basicJSON, "vals.hello")

	mm := Parse(basicJSON).Value().(map[string]interface{})
	fn := mm["loggy"].(map[string]interface{})["programmers"].([]interface{})[1].(map[string]interface{})["firstName"].(string)
	if fn != "Jason" {
		t.Fatalf("expecting %v, got %v", "Jason", fn)
	}
}
func TestUnicode(t *testing.T) {
	var json = `{"key":0,"的情况下解":{"key":1,"的情况":2}}`
	if Get(json, "的情况下解.key").Num != 1 {
		t.Fatal("fail")
	}
	if Get(json, "的情况下解.的情况").Num != 2 {
		t.Fatal("fail")
	}
	if Get(json, "的情况下解.的?况").Num != 2 {
		t.Fatal("fail")
	}
	if Get(json, "的情况下解.的?*").Num != 2 {
		t.Fatal("fail")
	}
	if Get(json, "的情况下解.*?况").Num != 2 {
		t.Fatal("fail")
	}
	if Get(json, "的情?下解.*?况").Num != 2 {
		t.Fatal("fail")
	}
	if Get(json, "的情下解.*?况").Num != 0 {
		t.Fatal("fail")
	}
}

func TestUnescape(t *testing.T) {
	unescape(string([]byte{'\\', '\\', 0}))
	unescape(string([]byte{'\\', '/', '\\', 'b', '\\', 'f'}))
}
func assert(t testing.TB, cond bool) {
	if !cond {
		t.Fatal("assert failed")
	}
}
func TestLess(t *testing.T) {
	assert(t, !Result{Type: Null}.Less(Result{Type: Null}, true))
	assert(t, Result{Type: Null}.Less(Result{Type: False}, true))
	assert(t, Result{Type: Null}.Less(Result{Type: True}, true))
	assert(t, Result{Type: Null}.Less(Result{Type: JSON}, true))
	assert(t, Result{Type: Null}.Less(Result{Type: Number}, true))
	assert(t, Result{Type: Null}.Less(Result{Type: String}, true))
	assert(t, !Result{Type: False}.Less(Result{Type: Null}, true))
	assert(t, Result{Type: False}.Less(Result{Type: True}, true))
	assert(t, Result{Type: String, Str: "abc"}.Less(Result{Type: String, Str: "bcd"}, true))
	assert(t, Result{Type: String, Str: "ABC"}.Less(Result{Type: String, Str: "abc"}, true))
	assert(t, !Result{Type: String, Str: "ABC"}.Less(Result{Type: String, Str: "abc"}, false))
	assert(t, Result{Type: Number, Num: 123}.Less(Result{Type: Number, Num: 456}, true))
	assert(t, !Result{Type: Number, Num: 456}.Less(Result{Type: Number, Num: 123}, true))
	assert(t, !Result{Type: Number, Num: 456}.Less(Result{Type: Number, Num: 456}, true))
	assert(t, stringLessInsensitive("abcde", "BBCDE"))
	assert(t, stringLessInsensitive("abcde", "bBCDE"))
	assert(t, stringLessInsensitive("Abcde", "BBCDE"))
	assert(t, stringLessInsensitive("Abcde", "bBCDE"))
	assert(t, !stringLessInsensitive("bbcde", "aBCDE"))
	assert(t, !stringLessInsensitive("bbcde", "ABCDE"))
	assert(t, !stringLessInsensitive("Bbcde", "aBCDE"))
	assert(t, !stringLessInsensitive("Bbcde", "ABCDE"))
	assert(t, !stringLessInsensitive("abcde", "ABCDE"))
	assert(t, !stringLessInsensitive("Abcde", "ABCDE"))
	assert(t, !stringLessInsensitive("abcde", "ABCDE"))
	assert(t, !stringLessInsensitive("ABCDE", "ABCDE"))
	assert(t, !stringLessInsensitive("abcde", "abcde"))
	assert(t, !stringLessInsensitive("123abcde", "123Abcde"))
	assert(t, !stringLessInsensitive("123Abcde", "123Abcde"))
	assert(t, !stringLessInsensitive("123Abcde", "123abcde"))
	assert(t, !stringLessInsensitive("123abcde", "123abcde"))
	assert(t, !stringLessInsensitive("124abcde", "123abcde"))
	assert(t, !stringLessInsensitive("124Abcde", "123Abcde"))
	assert(t, !stringLessInsensitive("124Abcde", "123abcde"))
	assert(t, !stringLessInsensitive("124abcde", "123abcde"))
	assert(t, stringLessInsensitive("124abcde", "125abcde"))
	assert(t, stringLessInsensitive("124Abcde", "125Abcde"))
	assert(t, stringLessInsensitive("124Abcde", "125abcde"))
	assert(t, stringLessInsensitive("124abcde", "125abcde"))
}

func TestIssue6(t *testing.T) {
	data := `{
      "code": 0,
      "msg": "",
      "data": {
        "sz002024": {
          "qfqday": [
            [
              "2014-01-02",
              "8.93",
              "9.03",
              "9.17",
              "8.88",
              "621143.00"
            ],
            [
              "2014-01-03",
              "9.03",
              "9.30",
              "9.47",
              "8.98",
              "1624438.00"
            ]
          ]
        }
      }
    }`

	var num []string
	for _, v := range Get(data, "data.sz002024.qfqday.0").Array() {
		num = append(num, v.String())
	}
	if fmt.Sprintf("%v", num) != "[2014-01-02 8.93 9.03 9.17 8.88 621143.00]" {
		t.Fatalf("invalid result")
	}
}

var exampleJSON = `{
	"widget": {
		"debug": "on",
		"window": {
			"title": "Sample Konfabulator Widget",
			"name": "main_window",
			"width": 500,
			"height": 500
		},
		"image": {
			"src": "Images/Sun.png",
			"hOffset": 250,
			"vOffset": 250,
			"alignment": "center"
		},
		"text": {
			"data": "Click Here",
			"size": 36,
			"style": "bold",
			"vOffset": 100,
			"alignment": "center",
			"onMouseUp": "sun1.opacity = (sun1.opacity / 100) * 90;"
		}
	}
}`

func TestNewParse(t *testing.T) {
	//fmt.Printf("%v\n", parse2(exampleJSON, "widget").String())
}

func TestUnmarshalMap(t *testing.T) {
	var m1 = Parse(exampleJSON).Value().(map[string]interface{})
	var m2 map[string]interface{}
	if err := json.Unmarshal([]byte(exampleJSON), &m2); err != nil {
		t.Fatal(err)
	}
	b1, err := json.Marshal(m1)
	if err != nil {
		t.Fatal(err)
	}
	b2, err := json.Marshal(m2)
	if err != nil {
		t.Fatal(err)
	}
	if bytes.Compare(b1, b2) != 0 {
		t.Fatal("b1 != b2")
	}
}

func TestSingleArrayValue(t *testing.T) {
	var json = `{"key": "value","key2":[1,2,3,4,"A"]}`
	var result = Get(json, "key")
	var array = result.Array()
	if len(array) != 1 {
		t.Fatal("array is empty")
	}
	if array[0].String() != "value" {
		t.Fatalf("got %s, should be %s", array[0].String(), "value")
	}

	array = Get(json, "key2.#").Array()
	if len(array) != 1 {
		t.Fatalf("got '%v', expected '%v'", len(array), 1)
	}

	array = Get(json, "key3").Array()
	if len(array) != 0 {
		t.Fatalf("got '%v', expected '%v'", len(array), 0)
	}

}

var manyJSON = `  {
	"a":{"a":{"a":{"a":{"a":{"a":{"a":{"a":{"a":{"a":{
	"a":{"a":{"a":{"a":{"a":{"a":{"a":{"a":{"a":{"a":{
	"a":{"a":{"a":{"a":{"a":{"a":{"a":{"a":{"a":{"a":{
	"a":{"a":{"a":{"a":{"a":{"a":{"a":{"a":{"a":{"a":{
	"a":{"a":{"a":{"a":{"a":{"a":{"a":{"a":{"a":{"a":{
	"a":{"a":{"a":{"a":{"a":{"a":{"a":{"a":{"a":{"a":{
	"a":{"a":{"a":{"a":{"a":{"a":{"a":{"a":{"a":{"a":{"hello":"world"
	}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}
	"position":{"type":"Point","coordinates":[-115.24,33.09]},
	"loves":["world peace"],
	"name":{"last":"Anderson","first":"Nancy"},
	"age":31
	"":{"a":"emptya","b":"emptyb"},
	"name.last":"Yellow",
	"name.first":"Cat",
}`

func combine(results []Result) string {
	return fmt.Sprintf("%v", results)
}
func TestManyBasic(t *testing.T) {
	testWatchForFallback = true
	defer func() {
		testWatchForFallback = false
	}()
	testMany := func(shouldFallback bool, expect string, paths ...string) {
		results := GetManyBytes(
			[]byte(manyJSON),
			paths...,
		)
		if len(results) != len(paths) {
			t.Fatalf("expected %v, got %v", len(paths), len(results))
		}
		if fmt.Sprintf("%v", results) != expect {
			fmt.Printf("%v\n", paths)
			t.Fatalf("expected %v, got %v", expect, results)
		}
		//if testLastWasFallback != shouldFallback {
		//	t.Fatalf("expected %v, got %v", shouldFallback, testLastWasFallback)
		//}
	}
	testMany(false, "[Point]", "position.type")
	testMany(false, `[emptya ["world peace"] 31]`, ".a", "loves", "age")
	testMany(false, `[["world peace"]]`, "loves")
	testMany(false, `[{"last":"Anderson","first":"Nancy"} Nancy]`, "name", "name.first")
	testMany(true, `[]`, strings.Repeat("a.", 40)+"hello")
	res := Get(manyJSON, strings.Repeat("a.", 48)+"a")
	testMany(true, `[`+res.String()+`]`, strings.Repeat("a.", 48)+"a")
	// these should fallback
	testMany(true, `[Cat Nancy]`, "name\\.first", "name.first")
	testMany(true, `[world]`, strings.Repeat("a.", 70)+"hello")
}
func testMany(t *testing.T, json string, paths, expected []string) {
	testManyAny(t, json, paths, expected, true)
	testManyAny(t, json, paths, expected, false)
}
func testManyAny(t *testing.T, json string, paths, expected []string, bytes bool) {
	var result []Result
	for i := 0; i < 2; i++ {
		var which string
		if i == 0 {
			which = "Get"
			result = nil
			for j := 0; j < len(expected); j++ {
				if bytes {
					result = append(result, GetBytes([]byte(json), paths[j]))
				} else {
					result = append(result, Get(json, paths[j]))
				}
			}
		} else if i == 1 {
			which = "GetMany"
			if bytes {
				result = GetManyBytes([]byte(json), paths...)
			} else {
				result = GetMany(json, paths...)
			}
		}
		for j := 0; j < len(expected); j++ {
			if result[j].String() != expected[j] {
				t.Fatalf("Using key '%s' for '%s'\nexpected '%v', got '%v'", paths[j], which, expected[j], result[j].String())
			}
		}
	}
}
func TestIssue20(t *testing.T) {
	json := `{ "name": "FirstName", "name1": "FirstName1", "address": "address1", "addressDetails": "address2", }`
	paths := []string{"name", "name1", "address", "addressDetails"}
	expected := []string{"FirstName", "FirstName1", "address1", "address2"}
	t.Run("SingleMany", func(t *testing.T) { testMany(t, json, paths, expected) })
}

func TestIssue21(t *testing.T) {
	json := `{ "Level1Field1":3, 
	           "Level1Field4":4, 
			   "Level1Field2":{ "Level2Field1":[ "value1", "value2" ], 
			   "Level2Field2":{ "Level3Field1":[ { "key1":"value1" } ] } } }`
	paths := []string{"Level1Field1", "Level1Field2.Level2Field1", "Level1Field2.Level2Field2.Level3Field1", "Level1Field4"}
	expected := []string{"3", `[ "value1", "value2" ]`, `[ { "key1":"value1" } ]`, "4"}
	t.Run("SingleMany", func(t *testing.T) { testMany(t, json, paths, expected) })
}

func TestRandomMany(t *testing.T) {
	var lstr string
	defer func() {
		if v := recover(); v != nil {
			println("'" + hex.EncodeToString([]byte(lstr)) + "'")
			println("'" + lstr + "'")
			panic(v)
		}
	}()
	rand.Seed(time.Now().UnixNano())
	b := make([]byte, 512)
	for i := 0; i < 50000; i++ {
		n, err := rand.Read(b[:rand.Int()%len(b)])
		if err != nil {
			t.Fatal(err)
		}
		lstr = string(b[:n])
		paths := make([]string, rand.Int()%64)
		for i := range paths {
			var b []byte
			n := rand.Int() % 5
			for j := 0; j < n; j++ {
				if j > 0 {
					b = append(b, '.')
				}
				nn := rand.Int() % 10
				for k := 0; k < nn; k++ {
					b = append(b, 'a'+byte(rand.Int()%26))
				}
			}
			paths[i] = string(b)
		}
		GetMany(lstr, paths...)
	}
}

type BenchStruct struct {
	Widget struct {
		Window struct {
			Name string `json:"name"`
		} `json:"window"`
		Image struct {
			HOffset int `json:"hOffset"`
		} `json:"image"`
		Text struct {
			OnMouseUp string `json:"onMouseUp"`
		} `json:"text"`
	} `json:"widget"`
}

var benchPaths = []string{
	"widget.window.name",
	"widget.image.hOffset",
	"widget.text.onMouseUp",
}

var benchManyPaths = []string{
	"widget.window.name",
	"widget.image.hOffset",
	"widget.text.onMouseUp",
	"widget.window.title",
	"widget.image.alignment",
	"widget.text.style",
	"widget.window.height",
	"widget.image.src",
	"widget.text.data",
	"widget.text.size",
}

func BenchmarkGJSONGet(t *testing.B) {
	t.ReportAllocs()
	t.ResetTimer()
	for i := 0; i < t.N; i++ {
		for j := 0; j < len(benchPaths); j++ {
			if Get(exampleJSON, benchPaths[j]).Type == Null {
				t.Fatal("did not find the value")
			}
		}
	}
	t.N *= len(benchPaths) // because we are running against 3 paths
}
func BenchmarkGJSONGetMany4Paths(t *testing.B) {
	benchmarkGJSONGetManyN(t, 4)
}
func BenchmarkGJSONGetMany8Paths(t *testing.B) {
	benchmarkGJSONGetManyN(t, 8)
}
func BenchmarkGJSONGetMany16Paths(t *testing.B) {
	benchmarkGJSONGetManyN(t, 16)
}
func BenchmarkGJSONGetMany32Paths(t *testing.B) {
	benchmarkGJSONGetManyN(t, 32)
}
func BenchmarkGJSONGetMany64Paths(t *testing.B) {
	benchmarkGJSONGetManyN(t, 64)
}
func BenchmarkGJSONGetMany128Paths(t *testing.B) {
	benchmarkGJSONGetManyN(t, 128)
}
func benchmarkGJSONGetManyN(t *testing.B, n int) {
	var paths []string
	for len(paths) < n {
		paths = append(paths, benchManyPaths...)
	}
	paths = paths[:n]
	t.ReportAllocs()
	t.ResetTimer()
	for i := 0; i < t.N; i++ {
		results := GetMany(exampleJSON, paths...)
		if len(results) == 0 {
			t.Fatal("did not find the value")
		}
		for j := 0; j < len(results); j++ {
			if results[j].Type == Null {
				t.Fatal("did not find the value")
			}
		}
	}
	t.N *= len(paths) // because we are running against 3 paths
}

func BenchmarkGJSONUnmarshalMap(t *testing.B) {
	t.ReportAllocs()
	t.ResetTimer()
	for i := 0; i < t.N; i++ {
		for j := 0; j < len(benchPaths); j++ {
			parts := strings.Split(benchPaths[j], ".")
			m, _ := Parse(exampleJSON).Value().(map[string]interface{})
			var v interface{}
			for len(parts) > 0 {
				part := parts[0]
				if len(parts) > 1 {
					m = m[part].(map[string]interface{})
					if m == nil {
						t.Fatal("did not find the value")
					}
				} else {
					v = m[part]
					if v == nil {
						t.Fatal("did not find the value")
					}
				}
				parts = parts[1:]
			}
		}
	}
	t.N *= len(benchPaths) // because we are running against 3 paths
}

func BenchmarkJSONUnmarshalMap(t *testing.B) {
	t.ReportAllocs()
	t.ResetTimer()
	for i := 0; i < t.N; i++ {
		for j := 0; j < len(benchPaths); j++ {
			parts := strings.Split(benchPaths[j], ".")
			var m map[string]interface{}
			if err := json.Unmarshal([]byte(exampleJSON), &m); err != nil {
				t.Fatal(err)
			}
			var v interface{}
			for len(parts) > 0 {
				part := parts[0]
				if len(parts) > 1 {
					m = m[part].(map[string]interface{})
					if m == nil {
						t.Fatal("did not find the value")
					}
				} else {
					v = m[part]
					if v == nil {
						t.Fatal("did not find the value")
					}
				}
				parts = parts[1:]
			}
		}
	}
	t.N *= len(benchPaths) // because we are running against 3 paths
}

func BenchmarkJSONUnmarshalStruct(t *testing.B) {
	t.ReportAllocs()
	t.ResetTimer()
	for i := 0; i < t.N; i++ {
		for j := 0; j < len(benchPaths); j++ {
			var s BenchStruct
			if err := json.Unmarshal([]byte(exampleJSON), &s); err != nil {
				t.Fatal(err)
			}
			switch benchPaths[j] {
			case "widget.window.name":
				if s.Widget.Window.Name == "" {
					t.Fatal("did not find the value")
				}
			case "widget.image.hOffset":
				if s.Widget.Image.HOffset == 0 {
					t.Fatal("did not find the value")
				}
			case "widget.text.onMouseUp":
				if s.Widget.Text.OnMouseUp == "" {
					t.Fatal("did not find the value")
				}
			}
		}
	}
	t.N *= len(benchPaths) // because we are running against 3 paths
}

func BenchmarkJSONDecoder(t *testing.B) {
	t.ReportAllocs()
	t.ResetTimer()
	for i := 0; i < t.N; i++ {
		for j := 0; j < len(benchPaths); j++ {
			dec := json.NewDecoder(bytes.NewBuffer([]byte(exampleJSON)))
			var found bool
		outer:
			for {
				tok, err := dec.Token()
				if err != nil {
					if err == io.EOF {
						break
					}
					t.Fatal(err)
				}
				switch v := tok.(type) {
				case string:
					if found {
						// break out once we find the value.
						break outer
					}
					switch benchPaths[j] {
					case "widget.window.name":
						if v == "name" {
							found = true
						}
					case "widget.image.hOffset":
						if v == "hOffset" {
							found = true
						}
					case "widget.text.onMouseUp":
						if v == "onMouseUp" {
							found = true
						}
					}
				}
			}
			if !found {
				t.Fatal("field not found")
			}
		}
	}
	t.N *= len(benchPaths) // because we are running against 3 paths
}

func BenchmarkFFJSONLexer(t *testing.B) {
	t.ReportAllocs()
	t.ResetTimer()
	for i := 0; i < t.N; i++ {
		for j := 0; j < len(benchPaths); j++ {
			l := fflib.NewFFLexer([]byte(exampleJSON))
			var found bool
		outer:
			for {
				t := l.Scan()
				if t == fflib.FFTok_eof {
					break
				}
				if t == fflib.FFTok_string {
					b, _ := l.CaptureField(t)
					v := string(b)
					if found {
						// break out once we find the value.
						break outer
					}
					switch benchPaths[j] {
					case "widget.window.name":
						if v == "\"name\"" {
							found = true
						}
					case "widget.image.hOffset":
						if v == "\"hOffset\"" {
							found = true
						}
					case "widget.text.onMouseUp":
						if v == "\"onMouseUp\"" {
							found = true
						}
					}
				}
			}
			if !found {
				t.Fatal("field not found")
			}
		}
	}
	t.N *= len(benchPaths) // because we are running against 3 paths
}

func skipCC(l *jlexer.Lexer, n int) {
	for i := 0; i < n; i++ {
		l.Skip()
		l.WantColon()
		l.Skip()
		l.WantComma()
	}
}
func skipGroup(l *jlexer.Lexer, n int) {
	l.WantColon()
	l.Delim('{')
	skipCC(l, n)
	l.Delim('}')
	l.WantComma()
}
func easyJSONWindowName(t *testing.B, l *jlexer.Lexer) {
	if l.String() == "window" {
		l.WantColon()
		l.Delim('{')
		skipCC(l, 1)
		if l.String() == "name" {
			l.WantColon()
			if l.String() == "" {
				t.Fatal("did not find the value")
			}
		}
	}
}
func easyJSONImageHOffset(t *testing.B, l *jlexer.Lexer) {
	if l.String() == "image" {
		l.WantColon()
		l.Delim('{')
		skipCC(l, 1)
		if l.String() == "hOffset" {
			l.WantColon()
			if l.Int() == 0 {
				t.Fatal("did not find the value")
			}
		}
	}
}
func easyJSONTextOnMouseUp(t *testing.B, l *jlexer.Lexer) {
	if l.String() == "text" {
		l.WantColon()
		l.Delim('{')
		skipCC(l, 5)
		if l.String() == "onMouseUp" {
			l.WantColon()
			if l.String() == "" {
				t.Fatal("did not find the value")
			}
		}
	}
}
func easyJSONWidget(t *testing.B, l *jlexer.Lexer, j int) {
	l.WantColon()
	l.Delim('{')
	switch benchPaths[j] {
	case "widget.window.name":
		skipCC(l, 1)
		easyJSONWindowName(t, l)
	case "widget.image.hOffset":
		skipCC(l, 1)
		if l.String() == "window" {
			skipGroup(l, 4)
		}
		easyJSONImageHOffset(t, l)
	case "widget.text.onMouseUp":
		skipCC(l, 1)
		if l.String() == "window" {
			skipGroup(l, 4)
		}
		if l.String() == "image" {
			skipGroup(l, 4)
		}
		easyJSONTextOnMouseUp(t, l)
	}
}
func BenchmarkEasyJSONLexer(t *testing.B) {
	t.ReportAllocs()
	t.ResetTimer()
	for i := 0; i < t.N; i++ {
		for j := 0; j < len(benchPaths); j++ {
			l := &jlexer.Lexer{Data: []byte(exampleJSON)}
			l.Delim('{')
			if l.String() == "widget" {
				easyJSONWidget(t, l, j)
			}
		}
	}
	t.N *= len(benchPaths) // because we are running against 3 paths
}

func BenchmarkJSONParserGet(t *testing.B) {
	data := []byte(exampleJSON)
	keys := make([][]string, 0, len(benchPaths))
	for i := 0; i < len(benchPaths); i++ {
		keys = append(keys, strings.Split(benchPaths[i], "."))
	}
	t.ReportAllocs()
	t.ResetTimer()
	for i := 0; i < t.N; i++ {
		for j, k := range keys {
			if j == 1 {
				// "widget.image.hOffset" is a number
				v, _ := jsonparser.GetInt(data, k...)
				if v == 0 {
					t.Fatal("did not find the value")
				}
			} else {
				// "widget.window.name",
				// "widget.text.onMouseUp",
				v, _ := jsonparser.GetString(data, k...)
				if v == "" {
					t.Fatal("did not find the value")
				}
			}
		}
	}
	t.N *= len(benchPaths) // because we are running against 3 paths
}
func jsoniterWindowName(t *testing.B, iter *jsoniter.Iterator) {
	var v string
	for {
		key := iter.ReadObject()
		if key != "window" {
			iter.Skip()
			continue
		}
		for {
			key := iter.ReadObject()
			if key != "name" {
				iter.Skip()
				continue
			}
			v = iter.ReadString()
			break
		}
		break
	}
	if v == "" {
		t.Fatal("did not find the value")
	}
}

func jsoniterTextOnMouseUp(t *testing.B, iter *jsoniter.Iterator) {
	var v string
	for {
		key := iter.ReadObject()
		if key != "text" {
			iter.Skip()
			continue
		}
		for {
			key := iter.ReadObject()
			if key != "onMouseUp" {
				iter.Skip()
				continue
			}
			v = iter.ReadString()
			break
		}
		break
	}
	if v == "" {
		t.Fatal("did not find the value")
	}
}
func jsoniterImageOffset(t *testing.B, iter *jsoniter.Iterator) {
	var v int
	for {
		key := iter.ReadObject()
		if key != "image" {
			iter.Skip()
			continue
		}
		for {
			key := iter.ReadObject()
			if key != "hOffset" {
				iter.Skip()
				continue
			}
			v = iter.ReadInt()
			break
		}
		break
	}
	if v == 0 {
		t.Fatal("did not find the value")
	}
}
func jsoniterWidget(t *testing.B, iter *jsoniter.Iterator, j int) {
	for {
		key := iter.ReadObject()
		if key != "widget" {
			iter.Skip()
			continue
		}
		switch benchPaths[j] {
		case "widget.window.name":
			jsoniterWindowName(t, iter)
		case "widget.image.hOffset":
			jsoniterImageOffset(t, iter)
		case "widget.text.onMouseUp":
			jsoniterTextOnMouseUp(t, iter)
		}
		break
	}
}

func BenchmarkJSONIterator(t *testing.B) {
	t.ReportAllocs()
	t.ResetTimer()
	for i := 0; i < t.N; i++ {
		for j := 0; j < len(benchPaths); j++ {
			iter := jsoniter.ParseString(exampleJSON)
			jsoniterWidget(t, iter, j)
		}
	}
	t.N *= len(benchPaths) // because we are running against 3 paths
}

var massiveJSON = func() string {
	var buf bytes.Buffer
	buf.WriteString("[")
	for i := 0; i < 100; i++ {
		if i > 0 {
			buf.WriteByte(',')
		}
		buf.WriteString(exampleJSON)
	}
	buf.WriteString("]")
	return buf.String()
}()

func BenchmarkConvertNone(t *testing.B) {
	json := massiveJSON
	t.ReportAllocs()
	t.ResetTimer()
	for i := 0; i < t.N; i++ {
		Get(json, "50.widget.text.onMouseUp")
	}
}
func BenchmarkConvertGet(t *testing.B) {
	data := []byte(massiveJSON)
	t.ReportAllocs()
	t.ResetTimer()
	for i := 0; i < t.N; i++ {
		Get(string(data), "50.widget.text.onMouseUp")
	}
}
func BenchmarkConvertGetBytes(t *testing.B) {
	data := []byte(massiveJSON)
	t.ReportAllocs()
	t.ResetTimer()
	for i := 0; i < t.N; i++ {
		GetBytes(data, "50.widget.text.onMouseUp")
	}
}