Test in Symfony's HttpFoundation failing with websupport-sk/pecl-memcache under PHP 7

[ymc-dabe]

Note: Referencing this from symfony/symfony#17873 in which a proposed fix for Symfony was rejected with the wish to fix this upstream (in websupport-sk/pecl-memcache).

Problem

Using websupport-sk/pecl-memcache (branch php7 / commit 88750b4) with PHP 7 a test in Symfony's HttpFoundation (v3.0.2) component is failing with the following error:

# php7.0 -f /tmp/phpunit.phar -- src/Symfony/Component/HttpFoundation
PHPUnit 5.2.9 by Sebastian Bergmann and contributors.

...............................................................  63 / 809 (  7%)
................................................S.............. 126 / 809 ( 15%)
...................................................S........... 189 / 809 ( 23%)
............................................................... 252 / 809 ( 31%)
............................................................... 315 / 809 ( 38%)
..............................................SS............... 378 / 809 ( 46%)
S.............................................................. 441 / 809 ( 54%)
............................................................... 504 / 809 ( 62%)
............................................................... 567 / 809 ( 70%)
............................................................... 630 / 809 ( 77%)
........................................................E...... 693 / 809 ( 85%)
..SSSSSSSSSSSSSSSSSSSSSS..........SSSSSSSSSSSSSSS.............. 756 / 809 ( 93%)
.....................................................           809 / 809 (100%)

Time: 8.4 seconds, Memory: 14.00Mb

There was 1 error:

1) Symfony\Component\HttpFoundation\Tests\Session\Storage\Handler\MemcacheSessionHandlerTest::testReadSession
Missing argument 2 for Mock_Memcache_f8a5b6df::get(), called in /tmp/dabe/symfony/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcacheSessionHandler.php on line 82 and defined

/tmp/dabe/symfony/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcacheSessionHandler.php:82
/tmp/dabe/symfony/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/MemcacheSessionHandlerTest.php:72

FAILURES!
Tests: 1239, Assertions: 1658, Errors: 1, Skipped: 42.

This does does not happen with the PHP5 version of websupport-sk/pecl-memcache (branch NON_BLOCKING_IO_php7 / commit fdbd46b):

# php5 -f /tmp/phpunit.phar -- src/Symfony/Component/HttpFoundation
PHPUnit 5.2.9 by Sebastian Bergmann and contributors.

...............................................................  63 / 809 (  7%)
................................................S.............. 126 / 809 ( 15%)
...................................................S........... 189 / 809 ( 23%)
............................................................... 252 / 809 ( 31%)
............................................................... 315 / 809 ( 38%)
..............................................SS............... 378 / 809 ( 46%)
S.............................................................. 441 / 809 ( 54%)
............................................................... 504 / 809 ( 62%)
............................................................... 567 / 809 ( 70%)
............................................................... 630 / 809 ( 77%)
............................................................... 693 / 809 ( 85%)
..SSSSSSSSSSSSSSSSSSSSSS..........SSSSSSSSSSSSSSS.............. 756 / 809 ( 93%)
.....................................................           809 / 809 (100%)

Time: 10.24 seconds, Memory: 23.25Mb

OK, but incomplete, skipped, or risky tests!
Tests: 1239, Assertions: 1660, Skipped: 42.

How to reproduce

• Build websupport-sk/pecl-memcache for php7 and configure php7 to use it
• Get composer and phpunit in place
• Checkout Symfony:
  # git clone https://github.com/symfony/symfony.git && cd symfony
• Reset Symfony to v3.0.2:
  # git reset --hard v3.0.2
• Install dependencies using composer:
  # composer install
• Run tests for HttpFoundation component:
  # phpunit src/Symfony/Component/HttpFoundation

Further information

The mocked object generated by phpunit is different for the php7 and the php5 version:

diff -u php5.mock.php php7.mock.php 
--- php5.mock.php   2016-02-28 12:08:01.521713978 +0100
+++ php7.mock.php   2016-02-28 12:06:48.600997172 +0100
@@ -1,4 +1,4 @@
-class Mock_Memcache_988c5512 extends Memcache implements PHPUnit_Framework_MockObject_MockObject
+class Mock_Memcache_2739b378 extends Memcache implements PHPUnit_Framework_MockObject_MockObject
 {
     private $__phpunit_invocationMocker;
     private $__phpunit_originalObject;
@@ -316,15 +316,15 @@
         return $result;
     }

-    public function get()
+    public function get($arg0, &$arg1, &$arg2)
     {
-        $arguments = array();
+        $arguments = array($arg0, &$arg1, &$arg2);
         $count     = func_num_args();

-        if ($count > 0) {
+        if ($count > 3) {
             $_arguments = func_get_args();

-            for ($i = 0; $i < $count; $i++) {
+            for ($i = 3; $i < $count; $i++) {
                 $arguments[] = $_arguments[$i];
             }
         }

Thus I suspect to the php7 version exposes something different through the reflection API, than the php5 version does.

[szabolcsbalogh]

i reproduced it, skips are because of missing memcached (not memcache), and mongo, ...
i have 2 failing tests

PHPUnit 5.2.10 by Sebastian Bergmann and contributors.

Runtime:       PHP 7.0.5-dev
Configuration: /home/baloghsz/src/pecl-memcache/test2/symfony/phpunit.xml.dist

...............................................................  63 / 809 (  7%)
............................................................... 126 / 809 ( 15%)
...................................................S........... 189 / 809 ( 23%)
............................................................... 252 / 809 ( 31%)
............................................................... 315 / 809 ( 38%)
..............................................SS............... 378 / 809 ( 46%)
S.............................................................. 441 / 809 ( 54%)
............................................................... 504 / 809 ( 62%)
............................................................... 567 / 809 ( 70%)
............................................................... 630 / 809 ( 77%)
........................................................E...... 693 / 809 ( 85%)
..SSSSSSSSSSSSSSSSSSSSSS.....E................................. 756 / 809 ( 93%)
.....................................................           809 / 809 (100%)

Time: 5.73 seconds, Memory: 14.00Mb

There were 2 errors:

1) Symfony\Component\HttpFoundation\Tests\Session\Storage\Handler\MemcacheSessionHandlerTest::testReadSession
Missing argument 2 for Mock_Memcache_75ed4e5a::get(), called in /home/baloghsz/src/pecl-memcache/test2/symfony/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcacheSessionHandler.php on line 82 and defined

/home/baloghsz/src/pecl-memcache/test2/symfony/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcacheSessionHandler.php:82
/home/baloghsz/src/pecl-memcache/test2/symfony/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/MemcacheSessionHandlerTest.php:72

2) Symfony\Component\HttpFoundation\Tests\Session\Storage\Handler\NativeFileSessionHandlerTest::testConstructDefault
is_dir(): Unable to find the wrapper "tcp" - did you forget to enable it when you configured PHP?

/home/baloghsz/src/pecl-memcache/test2/symfony/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/NativeFileSessionHandler.php:51
/home/baloghsz/src/pecl-memcache/test2/symfony/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/NativeFileSessionHandlerTest.php:72

1. mock. It is about function get, implemented as PHP_FUNCTION(memcache_get).
   in input parameters there is no change, so what i changed:
   This function uses zend_parse_parameters, and is returning flags to a reference from function parameters. There was a change in references, so if i would to do it in php7, i needed to define it in https://github.com/websupport-sk/pecl-memcache/blob/NON_BLOCKING_IO_php7/php7/memcache.c#L96, so there was added definition https://github.com/websupport-sk/pecl-memcache/blob/NON_BLOCKING_IO_php7/php7/memcache.c#L48, which there wasn't before.

   So parameters as seen in zend_parse_parameters were not changed, but there is added a definition, so now mock can discover about parameters. Can I overcome this in this module, or should be fixed elsewhere?

2. I don't know why is NativeFileSessionHandlerTest testing session.save_path if session.save_handler = "memcache". I didn't changed naming of configuration parameters for this module, so this should be the same for php5 before, but i didn't verified this.

[pierrejoye]

Not sure about #2. I have to check.

for #1, arg_info is missing for many APIs, we should definitively complete them at some points :) That looks like what is used by phpunit to valid the mock interface.

[ccovey]

@pierrejoye I am noticing this also on our current build. Do you have an ETA For #1 (or even a work around?).