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feature #9739 [FrameworkBundle] Extract KernelTestCase from WebTestCase (johnkary)

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This PR was merged into the 2.5-dev branch.

Discussion
----------

[FrameworkBundle] Extract KernelTestCase from WebTestCase

| Q             | A
| ------------- | ---
| Bug fix?      | No
| New feature?  | Yes
| BC breaks?    | No
| Deprecations? | No
| Tests pass?   | Yes
| Fixed tickets | None
| License       | MIT
| Doc PR        | symfony/symfony-docs#3311

Previous discussion is in #7704. Opened new PR to target master branch.

This idea came to me while reading the Cookbook article [How to create a Console Command - Testing Commands](http://symfony.com/doc/master/cookbook/console/console_command.html#testing-commands) and I wanted to hear feedback from others before submitting a patch.

Basically the Cookbook article states that when testing a Command that extending `WebTestCase` is a good way to get access to the Kernel and thus the Container. This struck me as weird because I was wanting to test a Command, which doesn't really have anything to do with "the web."

Currently `WebTestCase` doesn't do anything internally that looks like web-specific work, and the class docblock itself states "WebTestCase is the base class for functional tests.".

After a suggestion in #7704 by @beberlei, I decided to take his advice and now have the following implementation:

Extracted a new class `KernelTestCase` from `WebTestCase` and instead allow WebTestCase to extend KernelTestCase. Pulled all methods up into KernelTestCase except `createClient()` because `createClient()` is focused solely on creating a Client for issuing web-based requests.

Benjamin's solution provides us a clear extension point from `KernelTestCase` for Command-based tests and also provides 100% backwards-compatibility without the need to deprecate WebTestCase.

Commits
-------

c4f14fb Extract new base test class KernelTestClass
This commit is contained in:
Fabien Potencier 2014-03-03 19:00:51 +01:00
commit 0aeb3945bc
2 changed files with 176 additions and 147 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

174
src/Symfony/Bundle/FrameworkBundle/Test/KernelTestCase.php Normal file
View File

@ -0,0 +1,174 @@
<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Bundle\FrameworkBundle\Test;
use Symfony\Component\Finder\Finder;
use Symfony\Component\HttpKernel\KernelInterface;
/**
* KernelTestCase is the base class for tests needing a Kernel.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
abstract class KernelTestCase extends \PHPUnit_Framework_TestCase
{
protected static $class;
/**
* @var KernelInterface
*/
protected static $kernel;
/**
* Finds the directory where the phpunit.xml(.dist) is stored.
*
* If you run tests with the PHPUnit CLI tool, everything will work as
* expected. If not, override this method in your test classes.
*
* @return string The directory where phpunit.xml(.dist) is stored
*
* @throws \RuntimeException
*/
protected static function getPhpUnitXmlDir()
{
if (!isset($_SERVER['argv']) || false === strpos($_SERVER['argv'][0], 'phpunit')) {
throw new \RuntimeException('You must override the WebTestCase::createKernel() method.');
}
$dir = static::getPhpUnitCliConfigArgument();
if ($dir === null &&
(is_file(getcwd().DIRECTORY_SEPARATOR.'phpunit.xml') ||
is_file(getcwd().DIRECTORY_SEPARATOR.'phpunit.xml.dist'))) {
$dir = getcwd();
}
// Can't continue
if ($dir === null) {
throw new \RuntimeException('Unable to guess the Kernel directory.');
}
if (!is_dir($dir)) {
$dir = dirname($dir);
}
return $dir;
}
/**
* Finds the value of the CLI configuration option.
*
* PHPUnit will use the last configuration argument on the command line, so
* this only returns the last configuration argument.
*
* @return string The value of the PHPUnit cli configuration option
*/
private static function getPhpUnitCliConfigArgument()
{
$dir = null;
$reversedArgs = array_reverse($_SERVER['argv']);
foreach ($reversedArgs as $argIndex => $testArg) {
if (preg_match('/^-[^ \-]*c$/', $testArg) || $testArg === '--configuration') {
$dir = realpath($reversedArgs[$argIndex - 1]);
break;
} elseif (strpos($testArg, '--configuration=') === 0) {
$argPath = substr($testArg, strlen('--configuration='));
$dir = realpath($argPath);
break;
}
}
return $dir;
}
/**
* Attempts to guess the Kernel location.
*
* When the Kernel is located, the file is required.
*
* @return string The Kernel class name
*
* @throws \RuntimeException
*/
protected static function getKernelClass()
{
$dir = isset($_SERVER['KERNEL_DIR']) ? $_SERVER['KERNEL_DIR'] : static::getPhpUnitXmlDir();
$finder = new Finder();
$finder->name('*Kernel.php')->depth(0)->in($dir);
$results = iterator_to_array($finder);
if (!count($results)) {
throw new \RuntimeException('Either set KERNEL_DIR in your phpunit.xml according to http://symfony.com/doc/current/book/testing.html#your-first-functional-test or override the WebTestCase::createKernel() method.');
}
$file = current($results);
$class = $file->getBasename('.php');
require_once $file;
return $class;
}
/**
* Boots the Kernel for this test.
*
* @param array $options
*/
protected static function bootKernel(array $options = array())
{
static::ensureKernelShutdown();
static::$kernel = static::createKernel($options);
static::$kernel->boot();
}
/**
* Creates a Kernel.
*
* Available options:
*
* * environment
* * debug
*
* @param array $options An array of options
*
* @return KernelInterface A KernelInterface instance
*/
protected static function createKernel(array $options = array())
{
if (null === static::$class) {
static::$class = static::getKernelClass();
}
return new static::$class(
isset($options['environment']) ? $options['environment'] : 'test',
isset($options['debug']) ? $options['debug'] : true
);
}
/**
* Shutdown the Kernel.
*/
protected static function ensureKernelShutdown()
{
if (null !== static::$kernel) {
static::$kernel->shutdown();
}
}
/**
* Clean up Kernel usage in this test.
*/
protected function tearDown()
{
static::ensureKernelShutdown();
}
}

149
src/Symfony/Bundle/FrameworkBundle/Test/WebTestCase.php
View File

@ -12,23 +12,14 @@
namespace Symfony\Bundle\FrameworkBundle\Test;
use Symfony\Bundle\FrameworkBundle\Client;
use Symfony\Component\Finder\Finder;
use Symfony\Component\HttpKernel\KernelInterface;
/**
* WebTestCase is the base class for functional tests.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
abstract class WebTestCase extends \PHPUnit_Framework_TestCase
abstract class WebTestCase extends KernelTestCase
{
protected static $class;
/**
* @var KernelInterface
*/
protected static $kernel;
/**
* Creates a Client.
*
@ -39,147 +30,11 @@ abstract class WebTestCase extends \PHPUnit_Framework_TestCase
*/
protected static function createClient(array $options = array(), array $server = array())
{
if (null !== static::$kernel) {
static::$kernel->shutdown();
}
static::$kernel = static::createKernel($options);
static::$kernel->boot();
static::bootKernel($options);
$client = static::$kernel->getContainer()->get('test.client');
$client->setServerParameters($server);
return $client;
}
/**
* Finds the directory where the phpunit.xml(.dist) is stored.
*
* If you run tests with the PHPUnit CLI tool, everything will work as expected.
* If not, override this method in your test classes.
*
* @return string The directory where phpunit.xml(.dist) is stored
*
* @throws \RuntimeException
*/
protected static function getPhpUnitXmlDir()
{
if (!isset($_SERVER['argv']) || false === strpos($_SERVER['argv'][0], 'phpunit')) {
throw new \RuntimeException('You must override the WebTestCase::createKernel() method.');
}
$dir = static::getPhpUnitCliConfigArgument();
if ($dir === null &&
(is_file(getcwd().DIRECTORY_SEPARATOR.'phpunit.xml') ||
is_file(getcwd().DIRECTORY_SEPARATOR.'phpunit.xml.dist'))) {
$dir = getcwd();
}
// Can't continue
if ($dir === null) {
throw new \RuntimeException('Unable to guess the Kernel directory.');
}
if (!is_dir($dir)) {
$dir = dirname($dir);
}
return $dir;
}
/**
* Finds the value of the CLI configuration option.
*
* PHPUnit will use the last configuration argument on the command line, so this only returns
* the last configuration argument.
*
* @return string The value of the PHPUnit CLI configuration option
*/
private static function getPhpUnitCliConfigArgument()
{
$dir = null;
$reversedArgs = array_reverse($_SERVER['argv']);
foreach ($reversedArgs as $argIndex => $testArg) {
if (preg_match('/^-[^ \-]*c$/', $testArg) || $testArg === '--configuration') {
$dir = realpath($reversedArgs[$argIndex - 1]);
break;
} elseif (strpos($testArg, '--configuration=') === 0) {
$argPath = substr($testArg, strlen('--configuration='));
$dir = realpath($argPath);
break;
}
}
return $dir;
}
/**
* Attempts to guess the kernel location.
*
* When the Kernel is located, the file is required.
*
* @return string The Kernel class name
*
* @throws \RuntimeException
*/
protected static function getKernelClass()
{
$dir = $phpUnitDir = static::getPhpUnitXmlDir();
if (isset($_SERVER['KERNEL_DIR'])) {
$dir = $_SERVER['KERNEL_DIR'];
if (!is_dir($dir) && is_dir("$phpUnitDir/$dir")) {
$dir = "$phpUnitDir/$dir";
}
}
$finder = new Finder();
$finder->name('*Kernel.php')->depth(0)->in($dir);
$results = iterator_to_array($finder);
if (!count($results)) {
throw new \RuntimeException('Either set KERNEL_DIR in your phpunit.xml according to http://symfony.com/doc/current/book/testing.html#your-first-functional-test or override the WebTestCase::createKernel() method.');
}
$file = current($results);
$class = $file->getBasename('.php');
require_once $file;
return $class;
}
/**
* Creates a Kernel.
*
* Available options:
*
* * environment
* * debug
*
* @param array $options An array of options
*
* @return KernelInterface A KernelInterface instance
*/
protected static function createKernel(array $options = array())
{
if (null === static::$class) {
static::$class = static::getKernelClass();
}
return new static::$class(
isset($options['environment']) ? $options['environment'] : 'test',
isset($options['debug']) ? $options['debug'] : true
);
}
/**
* Shuts the kernel down if it was used in the test.
*/
protected function tearDown()
{
if (null !== static::$kernel) {
static::$kernel->shutdown();
}
}
}