hostnet/symfony-config-test

Library for testing user classes related to the Symfony Config Component

Thursday, February 8, 2018
by hboomsma
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The README.md

IMPORTANT: This package is no longer maintained, please consider using the original source: https://github.com/SymfonyTest/SymfonyConfigTest., _(*1)

SymfonyConfigTest

By Matthias Noback, _(*2)

, _(*3)

Writing configuration classes using the Symfony Config Component can be quite hard. To help you verify the validity of the resulting config node tree, this library provides a PHPUnit test case and some custom assertions., _(*4)

Installation

Using Composer:, _(*5)

php composer.phar require --dev matthiasnoback/symfony-config-test

Usage

Create a test case and use the trait from Matthias\SymfonyConfigTest\PhpUnit\ConfigurationTestCaseTrait. Then implement getConfiguration():, _(*6)

<?php

class ConfigurationTest extends \PHPUnit_Framework_TestCase
{
    use ConfigurationTestCaseTrait;

    protected function getConfiguration()
    {
        return new Configuration();
    }
}

Test invalid configuration values

Let's assume the Configuration class you want to test looks like this:, _(*7)

<?php

use Symfony\Component\Config\Definition\Builder\TreeBuilder;
use Symfony\Component\Config\Definition\ConfigurationInterface;

class ConfigurationWithRequiredValue implements ConfigurationInterface
{
    public function getConfigTreeBuilder()
    {
        $treeBuilder = new TreeBuilder();

        $rootNode = $treeBuilder->root('root');
        $rootNode
            ->isRequired()
            ->children()
                ->scalarNode('required_value')
                    ->isRequired()
                ->end()
            ->end();

        return $treeBuilder;
    }
}

When you provide an empty array as the value for this configuration, you would expect an exception since the required_value node is required. You can assert that a given set of configuration values is invalid using the assertConfigurationIsInvalid() method:, _(*8)

<?php

class ConfigurationTest extends \PHPUnit_Framework_TestCase
{
    use ConfigurationTestCaseTrait;

    public function testValuesAreInvalidIfRequiredValueIsNotProvided()
    {
        $this->assertConfigurationIsInvalid(
            array(
                array() // no values at all
            ),
            'required_value' // (part of) the expected exception message - optional
        );
    }
}

Test processed configuration values

You may also want to verify that after processing an array of configuration values the result will be as expected:, _(*9)

<?php

class ConfigurationTest extends \PHPUnit_Framework_TestCase
{
    use ConfigurationTestCaseTrait;

    public function testProcessedValueContainsRequiredValue()
    {
        $this->assertProcessedConfigurationEquals(array(
            array('required_value' => 'first value'),
            array('required_value' => 'last value')
        ), array(
            'required_value'=> 'last value'
        ));
    }
}

Please note: the first argument of each of the assert* methods is an array of arrays. The extra nesting level allows you to test the merge process. See also the section Merging options of the Config Component documentation., _(*10)

Test a subset of the configuration tree

Using this library it's possible to test just one branch of your configuration tree. Consider the following node tree definition, which contains the branches array_node_1 and array_node_2:, _(*11)

<?php

use Symfony\Component\Config\Definition\Builder\TreeBuilder;
use Symfony\Component\Config\Definition\ConfigurationInterface;

class ConfigurationWithTwoBranches implements ConfigurationInterface
{
    public function getConfigTreeBuilder()
    {
        $treeBuilder = new TreeBuilder();

        $rootNode = $treeBuilder->root('root');
        $rootNode
            ->children()
                ->arrayNode('array_node_1')
                    ->isRequired()
                    ->children()
                        ->scalarNode('required_value_1')
                            ->isRequired()
                        ->end()
                    ->end()
                ->end()
                ->arrayNode('array_node_2')
                    ->isRequired()
                    ->children()
                        ->scalarNode('required_value_2')
                            ->isRequired()
                        ->end()
                    ->end()
                ->end()
            ->end();

        return $treeBuilder;
    }
}

If you want to test, for instance, only the array_node_1 branch from the example below, and ignore the array_node_2, provide array_node_1 as the argument for the $breadcrumbPath parameter of the test helper functions, for example:, _(*12)

/**
 * @test
 */
public function processed_configuration_for_array_node_1()
{
    $this->assertProcessedConfigurationEquals(
        array(
            array('array_node_1' => array('required_value_1' => 'original value')),
            array('array_node_1' => array('required_value_1' => 'final value'))
        ),
        array(
            'array_node_1' => array(
                'required_value_1' => 'final value'
            )
        ),
        // the path of the nodes you want to focus on in this test:
        'array_node_1'
    );
}

This would trigger no validation errors for any value in the array_node_2 branch., _(*13)

Note that the $breadcrumbPath can be even more specific, e.g. "doctrine.orm" (which would skip configuration processing for branch "doctrine.dbal", etc.)., _(*14)

Also note that you can only traverse over array nodes using the . in the breadcrumb path. The last part of the breadcrumb path can be any other type of node., _(*15)

Test a subset of the prototyped configuration tree

You can traverse through prototype array nodes using * as its name in the breadcrumb path., _(*16)

<?php

use Symfony\Component\Config\Definition\Builder\TreeBuilder;
use Symfony\Component\Config\Definition\ConfigurationInterface;

class PrototypedConfiguration implements ConfigurationInterface
{
    public function getConfigTreeBuilder()
    {
        $treeBuilder = new TreeBuilder();

        $rootNode = $treeBuilder->root('root');
        $rootNode
            ->children()
                ->arrayNode('array_node')
                    ->useAttributeAsKey('name')
                    ->prototype('array')
                        ->children()
                            ->scalarNode('default_value')->cannotBeEmpty()->defaultValue('foobar')->end()
                            ->scalarNode('required_value')->isRequired()->end()
                        ->end()
                    ->end()
                ->end()
            ->end();

        return $treeBuilder;
    }
}

If you want to test whether default_value is set to foobar by default, but don't want the test to be affected by requirements on required_value node, you can define its path as array_node.*.default_value, for example:, _(*17)

/**
 * @test
 */
public function processed_configuration_for_array_node_1()
{
    $this->assertProcessedConfigurationEquals(
        array(
            array('array_node' => array('prototype_name' => null)),
        ),
        array(
            'array_node' => array(
                'prototype_name' => array(
                    'default_value' => 'foobar'
                )
            )
        ),
        // the path of the nodes you want to focus on in this test:
        'array_node.*.default_value'
    );
}

Version Guidance

Version	Released	Status
3.x	Nov 30, 2017	Latest
2.x	Jun 18, 2016	EOL
1.x	Oct 12, 2014	EOL

The Versions

08/02 2018

dev-master

9999999-dev

Library for testing user classes related to the Symfony Config Component

library symfony-config-test

Library for testing user classes related to the Symfony Config Component

hostnet/symfony-config-test

The README.md

SymfonyConfigTest

Installation

Usage

Test invalid configuration values

Test processed configuration values

Test a subset of the configuration tree

Test a subset of the prototyped configuration tree

Version Guidance

The Versions

dev-master

The Requires

v3.2.0

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dev-analysis-86oEyn

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The Development Requires

by Matthias Noback

v3.1.0

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by Matthias Noback

v2.x-dev

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by Matthias Noback

v2.2.0

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by Matthias Noback

v3.0.1

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by Matthias Noback

v3.0.0

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by Matthias Noback

dev-ng

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by Matthias Noback

v2.1.0

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by Matthias Noback

v2.0.1

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by Matthias Noback

v2.0.0

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by Matthias Noback

1.x-dev

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by Matthias Noback

v1.4.0

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by Matthias Noback

v1.3.1

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by Matthias Noback

v1.3.0

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by Matthias Noback

v1.2.3

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by Matthias Noback

v1.2.2

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The Development Requires

by Matthias Noback

1.2.1

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