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// +build go1.8
package misc_tests
import (
"bytes"
"encoding/json"
"io"
"io/ioutil"
"math/rand"
"strconv"
"testing"
"github.com/json-iterator/go"
"github.com/stretchr/testify/require"
)
func Test_read_uint64_invalid(t *testing.T) {
should := require.New(t)
iter := jsoniter.ParseString(jsoniter.ConfigDefault, ",")
iter.ReadUint64()
should.NotNil(iter.Error)
}
func Test_read_int32_array(t *testing.T) {
should := require.New(t)
input := `[123,456,789]`
val := make([]int32, 0)
jsoniter.UnmarshalFromString(input, &val)
should.Equal(3, len(val))
}
func Test_read_int64_array(t *testing.T) {
should := require.New(t)
input := `[123,456,789]`
val := make([]int64, 0)
jsoniter.UnmarshalFromString(input, &val)
should.Equal(3, len(val))
}
func Test_wrap_int(t *testing.T) {
should := require.New(t)
str, err := jsoniter.MarshalToString(jsoniter.WrapInt64(100))
should.Nil(err)
should.Equal("100", str)
}
func Test_write_val_int(t *testing.T) {
should := require.New(t)
buf := &bytes.Buffer{}
stream := jsoniter.NewStream(jsoniter.ConfigDefault, buf, 4096)
stream.WriteVal(1001)
stream.Flush()
should.Nil(stream.Error)
should.Equal("1001", buf.String())
}
func Test_write_val_int_ptr(t *testing.T) {
should := require.New(t)
buf := &bytes.Buffer{}
stream := jsoniter.NewStream(jsoniter.ConfigDefault, buf, 4096)
val := 1001
stream.WriteVal(&val)
stream.Flush()
should.Nil(stream.Error)
should.Equal("1001", buf.String())
}
func Test_float_as_int(t *testing.T) {
should := require.New(t)
var i int
should.NotNil(jsoniter.Unmarshal([]byte(`1.1`), &i))
}
// chunkedData is io.Reader which returns random amount of data in range [1, chunkedData.chunkSize].
// It simulates chunked data on from HTTP server, which is commonly used by net/http package.
type chunkedData struct {
chunkSize int
data []byte
head int
}
// Read is implementation of the io.Reader which returns random amount of data in range [1, chunkedData.chunkSize].
func (c *chunkedData) Read(p []byte) (n int, err error) {
to := c.head + int(rand.Int31n(int32(c.chunkSize))+1)
// copy does not copy more data then p can consume
n = copy(p, c.data[c.head:to])
c.head = c.head + n
if c.head >= len(c.data) {
err = io.EOF
}
return n, err
}
// TestIterator_ReadInt_chunkedInput validates the behaviour of Iterator.ReadInt() method in where:
// - it reads data from io.Reader,
// - expected value is 0 (zero)
// - Iterator.tail == Iterator.head
// - Iterator.tail < len(Iterator.buf)
// - value in buffer after Iterator.tail is presented from previous read and has '.' character.
func TestIterator_ReadInt_chunkedInput(t *testing.T) {
should := require.New(t)
data := &chunkedData{
data: jsonFloatIntArray(t, 10),
}
// because this test is rely on randomness of chunkedData, we are doing multiple iterations to
// be sure, that we can hit a required case.
for data.chunkSize = 3; data.chunkSize <= len(data.data); data.chunkSize++ {
data.head = 0
iter := jsoniter.Parse(jsoniter.ConfigDefault, data, data.chunkSize)
i := 0
for iter.ReadArray() {
// every even item is float, let's just skip it.
if i%2 == 0 {
iter.Skip()
i++
continue
}
should.Zero(iter.ReadInt())
should.NoError(iter.Error)
i++
}
}
}
// jsonFloatIntArray generates JSON array where every
// - even item is float 0.1
// - odd item is integer 0
//
// [0.1, 0, 0.1, 0]
func jsonFloatIntArray(t *testing.T, numberOfItems int) []byte {
t.Helper()
numbers := make([]jsoniter.Any, numberOfItems)
for i := range numbers {
switch i % 2 {
case 0:
numbers[i] = jsoniter.WrapFloat64(0.1)
default:
numbers[i] = jsoniter.WrapInt64(0)
}
}
fixture, err := jsoniter.ConfigFastest.Marshal(numbers)
if err != nil {
panic(err)
}
b := &bytes.Buffer{}
require.NoError(
t,
json.Compact(b, fixture),
"json should be compactable",
)
return b.Bytes()
}
func Benchmark_jsoniter_encode_int(b *testing.B) {
stream := jsoniter.NewStream(jsoniter.ConfigDefault, ioutil.Discard, 64)
for n := 0; n < b.N; n++ {
stream.Reset(nil)
stream.WriteUint64(0xffffffff)
}
}
func Benchmark_itoa(b *testing.B) {
for n := 0; n < b.N; n++ {
strconv.FormatInt(0xffffffff, 10)
}
}
func Benchmark_jsoniter_int(b *testing.B) {
iter := jsoniter.NewIterator(jsoniter.ConfigDefault)
input := []byte(`100`)
for n := 0; n < b.N; n++ {
iter.ResetBytes(input)
iter.ReadInt64()
}
}
func Benchmark_json_int(b *testing.B) {
for n := 0; n < b.N; n++ {
result := int64(0)
json.Unmarshal([]byte(`-100`), &result)
}
}
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