How to use a csv file in PHPUnit test - phpunit

Question

I wrote a DataTest case following the example 4.5 of PHPUnit manual, the url is: http://www.phpunit.de/manual/3.6/en/writing-tests-for-phpunit.html#writing-tests-for-phpunit.data-providers. But I came across with an error:
The data provider specified for DataTest::testAdd is invalid.
Data set #0 is invalid.
I thought it maybe that I edit the data.csv file in a wrong way, then I used php function fputcsv() to create data.csv file, but it also didn't work, I want to know why, and how to resolve this problem. Thanks!
P. S.: the data in data.csv is:
0,0,0
0,1,1
The codes are show as follows:
DataTest.php
require 'CsvFileIterator.php';
class DataTest extends PHPUnit_Framework_TestCase
{
public function provider()
{
return new CsvFileIterator('data.csv');
}
/**
* #dataProvider provider
*/
public function testAdd($a, $b, $c)
{
$this->assertEquals($c, $a + $b);
}
}
CsvFileIterator.php
class CsvFileIterator implements Iterator
{
protected $file;
protected $key = 0;
protected $current;
public function __construct($file)
{
$this->file = fopen($file, 'r');
}
public function __destruct()
{
fclose($this->file);
}
public function rewind()
{
rewind($this->file);
$this->current = fgetcsv($this->file);
$this->key = 0;
}
public function valid()
{
return !feof($this->file);
}
public function key()
{
return $this->key;
}
public function current()
{
return $this->current;
}
public function next()
{
$this->current = fgetcsv($this->file);
$this->key++;
}
}
The data.csv file is create by function fputcsv():
$data = array(
array(0, 0, 0),
array(0, 1, 1)
);
$fp = fopen('data.csv', 'w');
foreach($data as $v)
{
fputcsv($fp, $v);
}
fclose($fp);

Answer 1

Example :-)
/**
* #dataProvider provider
* #group csv
*/
public function testAdd($a, $b, $c)
{
$this->assertEquals($c, $a + $b);
}
/**
* #return array
*/
public function provider()
{
$file = file_get_contents("/Volumes/htdocs/contacts.csv","r");
foreach ( explode("\n", $file, -1) as $line )
{
$data[] = explode(',', $line);
}
return $data;
}
/*
* CREATE TO CSV FILE DATAPROVIDER
* don't create this file in your test case
*/
public function saveToCsv()
{
$list = array(
array(0,0,0),
array(0,1,1)
);
$file = fopen("/Volumes/htdocs/contacts.csv","w");
foreach ($list as $line)
{
fputcsv($file,$line);
}
fclose($file);
}

Answer 2

#ZongshuLin Similar issue here. Possible Solutions:
Check this data.csv. Basically I had to add a row after the last line.
You can also check my approach on GitHub when specifying the data.csv location
Use DIRECTORY_SEPARATOR constant so the script may run on any OS--Windows uses backslashes while Linux slashes.
/**
* #return CsvFileIterator
*/
public function additionProvider()
{
return new CsvFileIterator(__DIR__ . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR . 'storage/data.csv');
}