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Merge pull request #160 from FriendsOfSymfony/issue_144
Add nginx to testing documentation and cleanup testing configuration information.
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‎doc/testing-your-application.rst‎

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Testing Your Application
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========================
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This chapter describes how to test your application against a Varnish instance.
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This chapter describes how to test your application against you reverse proxy
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instance.
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VarnishTestCase
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---------------
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The FOSHttpCache library provides base test case classes to help you write
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functional tests. This may be helpful to test the way your application sets
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caching headers and invalidates cached content.
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The FOSHttpCache library provides a base test case to help you write functional
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tests against a Varnish instance. This may be helpful to test the way your
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application sets caching headers and invalidates cached content.
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By having your test classes extend one of the testCase classes, you get:
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By having your test classes extend ``VarnishTestCase``, you get:
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* independent tests: all previously cached content is removed by restarting
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Varnish in the test setUp method
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* ``$this->varnish`` referring to an instance of this library’s Varnish client
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that is configured to talk to your Varnish server
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* independent tests: all previously cached content is removed in the tests
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``setUp`` method. The way this is done depends on which reverse proxy you use;
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* an instance of this library’s client that is configured to talk to your
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reverse proxy server. See reverse proxy specific sections for details;
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* convenience methods for executing HTTP requests to your application:
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``$this->getHttpClient()`` and ``$this->getResponse()``
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``$this->getHttpClient()`` and ``$this->getResponse()``;
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* custom assertions ``assertHit`` and ``assertMiss`` for validating a cache hit/miss.
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Configuration
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-------------
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By default, the ``VarnishTestCase`` starts and stops a Varnish server for you.
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All you have to do, is to refer the class to your Varnish configuration (VCL)
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file. The recommended way to configure the test case is by setting constants
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in your `phpunit.xml`. Alternatively, you can override the getter methods:
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======================= ========================= ============ ==========================================
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Constant Getter Default Description
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======================= ========================= ============ ==========================================
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``VARNISH_FILE`` ``getConfigFile()`` your Varnish configuration (VCL) file
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``VARNISH_BINARY`` ``getBinary()`` ``varnishd`` your Varnish binary
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``VARNISH_PORT`` ``getCachingProxyPort()`` ``6181`` port Varnish listens on
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``VARNISH_MGMT_PORT`` ``getVarnishMgmtPort()`` ``6182`` Varnish management port
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``WEB_SERVER_HOSTNAME`` ``getHostName()`` hostname your application can be reached at
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======================= ========================= ============ ==========================================
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The recommended way to configure the test case is by setting constants
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in your `phpunit.xml`. Alternatively, you can override the getter methods.
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Setting Constants
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~~~~~~~~~~~~~~~~~
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}
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}
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VarnishTestCase
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---------------
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Configuration
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'''''''''''''
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By default, the ``VarnishTestCase`` starts and stops a Varnish server for you.
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All you have to do is to set your Varnish configuration (VCL) file.
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======================= ========================= ================================================== ============================================
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Constant Getter Default Description
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======================= ========================= ================================================== ============================================
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``VARNISH_FILE`` ``getConfigFile()`` your Varnish configuration (VCL) file
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``VARNISH_BINARY`` ``getBinary()`` ``varnishd`` your Varnish binary
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``VARNISH_PORT`` ``getCachingProxyPort()`` ``6181`` port Varnish listens on
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``VARNISH_MGMT_PORT`` ``getVarnishMgmtPort()`` ``6182`` Varnish management port
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``VARNISH_CACHE_DIR`` ``getCacheDir()`` ``sys_get_temp_dir()`` + ``/foshttpcache-varnish`` directory to use for cache
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``VARNISH_VERSION`` ``getVarnishVersion()`` ``3`` installed varnish application version
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``WEB_SERVER_HOSTNAME`` ``getHostName()`` hostname your application can be reached at
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======================= ========================= ================================================== ============================================
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Enable Assertions
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~~~~~~~~~~~~~~~~~
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'''''''''''''''''
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For the `assertHit` and `assertMiss` assertions to work, you should add a
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:ref:`custom X-Cache header <varnish_debugging>` to responses served
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by your Varnish.
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NginxTestCase
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-------------
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Configuration
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'''''''''''''
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By default, the ``NginxTestCase`` starts and stops NGINX server for you and deletes
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all cached contents. You have to set your NGINX configuration file.
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These are all the configurations you can change
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======================= ========================= ================================================ ==========================================
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Constant Getter Default Description
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======================= ========================= ================================================ ==========================================
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``NGINX_FILE`` ``getConfigFile()`` your NGINX configuration file
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``NGINX_BINARY`` ``getBinary()`` ``nginx`` your NGINX binary
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``NGINX_PORT`` ``getCachingProxyPort()`` ``8088`` port NGINX listens on
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``NGINX_CACHE_PATH`` ``getCacheDir()`` ``sys_get_temp_dir()`` + ``/foshttpcache-nginx`` directory to use for cache
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Must match `proxy_cache_path` directive in
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your configuration file.
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``WEB_SERVER_HOSTNAME`` ``getHostName()`` hostname your application can be reached at
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======================= ========================= ================================================ ==========================================
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Enable Assertions
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'''''''''''''''''
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For the `assertHit` and `assertMiss` assertions to work, you should add the HTTP
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header ``X-Cache`` to your responses
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Usage
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-----
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$this->assertMiss($this->getResponse($url));
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}
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Tests for Nginx look the same but extend the NginxTestCase.
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For more ideas, see this library’s functional tests in the
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:source:`tests/Functional/` directory.
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‎src/Test/NginxTestCase.php‎

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/**
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* A phpunit base class to write functional tests with NGINX.
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*
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* You can define a couple of constants in your phpunit to control how this
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* test behaves.
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* You can define constants in your phpunit.xml to control how this test behaves.
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*
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* Note that the WEB_SERVER_HOSTNAME must also match with what you have in your
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* NGINX configuration file.
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*
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* To define constants in the phpunit file, use this syntax:
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* <php>
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* <const name="NGINX_FILE" value="./tests/FOS/HttpCache/Tests/Functional/Fixtures/nginx/fos.conf" />
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* </php>
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*
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* NGINX_BINARY Executable for NGINX. This can also be the full path
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* to the file if the binary is not automatically found
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* (default nginx)
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* NGINX_PORT Test NGINX port to use (default 8088)
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* NGINX_FILE NGINX configuration file (required if not passed to setUp)
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* NGINX_CACHE_PATH NGINX configuration file (required if not passed to setUp)
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* NGINX_FILE NGINX configuration file (required if not passed to setUp)
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* NGINX_BINARY Executable for NGINX. This can also be the full path
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* to the file if the binary is not automatically found
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* (default nginx)
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* NGINX_PORT Port NGINX listens to (default 8088)
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* NGINX_CACHE_PATH directory to use for cache
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* Must match `proxy_cache_path` directive in
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* your configuration file.
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* (default sys_get_temp_dir() + '/foshttpcache-nginx')
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* WEB_SERVER_HOSTNAME hostname where your application can be reached (required)
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*/
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abstract class NginxTestCase extends ProxyTestCase
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{
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/**
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* @var NginxProxy
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* @var Nginx
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*/
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protected $proxy;
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protected $proxyClient;
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/**
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* @var Nginx
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* @var NginxProxy
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*/
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protected $proxyClient;
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protected $proxy;
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/**
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* The default implementation looks at the constant NGINX_FILE.

‎src/Test/VarnishTestCase.php‎

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/**
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* A phpunit base class to write functional tests with varnish.
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*
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* You can define a couple of constants in your phpunit to control how this
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* test behaves.
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* You can define constants in your phpunit to control how this test behaves.
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*
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* Note that the WEB_SERVER_HOSTNAME must also match with what you have in your
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* .vcl file.
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* <const name="VARNISH_FILE" value="./tests/Functional/Fixtures/varnish-3/fos.vcl" />
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* </php>
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*
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* VARNISH_BINARY executable for varnish. this can also be the full path
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* VARNISH_FILE Varnish configuration file (required if not passed to setUp)
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* VARNISH_BINARY executable for Varnish. this can also be the full path
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* to the file if the binary is not automatically found
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* (default varnishd)
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* VARNISH_PORT test varnish port to use (default 6181)
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* VARNISH_MGMT_PORT test varnish mgmt port (default 6182)
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* VARNISH_FILE varnish configuration file (required if not passed to setUp)
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* VARNISH_PORT port Varnish listens on (default 6181)
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* VARNISH_MGMT_PORT Varnish management port (default 6182)
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* VARNISH_CACHE_DIR directory to use for cache
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* (default /tmp/foshttpcache-test)
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* WEB_SERVER_HOSTNAME name of the webserver varnish has to talk to (required)
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* (default sys_get_temp_dir() + '/foshttpcache-varnish')
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* VARNISH_VERSION Version of varnish: 3 or 4, defaults to 3.
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* WEB_SERVER_HOSTNAME hostname/IP your application can be reached at (required)
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*/
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abstract class VarnishTestCase extends ProxyTestCase
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{
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*/
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protected $proxy;
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/**
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* {@inheritdoc}
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*/
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protected function getProxy()
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{
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if (null === $this->proxy) {
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$this->proxy = new VarnishProxy($this->getConfigFile());
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if ($this->getBinary()) {
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$this->proxy->setBinary($this->getBinary());
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}
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if ($this->getCachingProxyPort()) {
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$this->proxy->setPort($this->getCachingProxyPort());
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}
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if ($this->getVarnishMgmtPort()) {
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$this->proxy->setManagementPort($this->getVarnishMgmtPort());
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}
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if ($this->getCacheDir()) {
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$this->proxy->setCacheDir($this->getCacheDir());
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}
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}
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return $this->proxy;
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}
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/**
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* The default implementation looks at the constant VARNISH_FILE.
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*
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return getenv('VARNISH_VERSION') ?: 3;
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}
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/**
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* {@inheritdoc}
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*/
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protected function getProxy()
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{
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if (null === $this->proxy) {
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$this->proxy = new VarnishProxy($this->getConfigFile());
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if ($this->getBinary()) {
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$this->proxy->setBinary($this->getBinary());
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}
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if ($this->getCachingProxyPort()) {
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$this->proxy->setPort($this->getCachingProxyPort());
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}
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if ($this->getVarnishMgmtPort()) {
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$this->proxy->setManagementPort($this->getVarnishMgmtPort());
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}
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if ($this->getCacheDir()) {
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$this->proxy->setCacheDir($this->getCacheDir());
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}
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}
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return $this->proxy;
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}
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/**
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* Get Varnish proxy client
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*

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