You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: jsoniter_int_test.go
    path of file: ./repos/go/misc_tests
    
    the code of the file until where you have to start completion: // +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_uint
    
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
}