Edit: AbstractChoiceListTest.php

Editing: AbstractChoiceListTest.php

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<?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\Component\Form\Tests\Extension\Core\ChoiceList;

/**
 * @author Bernhard Schussek <bschussek@gmail.com>
 */
abstract class AbstractChoiceListTest extends \PHPUnit_Framework_TestCase
{
    /**
     * @var \Symfony\Component\Form\Extension\Core\ChoiceList\ChoiceListInterface
     */
    protected $list;

/**
     * @var array
     */
    protected $choices;

/**
     * @var array
     */
    protected $values;

/**
     * @var array
     */
    protected $indices;

/**
     * @var array
     */
    protected $labels;

/**
     * @var mixed
     */
    protected $choice1;

/**
     * @var mixed
     */
    protected $choice2;

/**
     * @var mixed
     */
    protected $choice3;

/**
     * @var mixed
     */
    protected $choice4;

/**
     * @var string
     */
    protected $value1;

/**
     * @var string
     */
    protected $value2;

/**
     * @var string
     */
    protected $value3;

/**
     * @var string
     */
    protected $value4;

/**
     * @var int|string
     */
    protected $index1;

/**
     * @var int|string
     */
    protected $index2;

/**
     * @var int|string
     */
    protected $index3;

/**
     * @var int|string
     */
    protected $index4;

/**
     * @var string
     */
    protected $label1;

/**
     * @var string
     */
    protected $label2;

/**
     * @var string
     */
    protected $label3;

/**
     * @var string
     */
    protected $label4;

protected function setUp()
    {
        parent::setUp();

$this->list = $this->createChoiceList();

$this->choices = $this->getChoices();
        $this->indices = $this->getIndices();
        $this->values = $this->getValues();
        $this->labels = $this->getLabels();

// allow access to the individual entries without relying on their indices
        reset($this->choices);
        reset($this->indices);
        reset($this->values);
        reset($this->labels);

for ($i = 1; $i <= 4; ++$i) {
            $this->{'choice'.$i} = current($this->choices);
            $this->{'index'.$i} = current($this->indices);
            $this->{'value'.$i} = current($this->values);
            $this->{'label'.$i} = current($this->labels);

next($this->choices);
            next($this->indices);
            next($this->values);
            next($this->labels);
        }
    }

public function testGetChoices()
    {
        $this->assertSame($this->choices, $this->list->getChoices());
    }

public function testGetValues()
    {
        $this->assertSame($this->values, $this->list->getValues());
    }

public function testGetIndicesForChoices()
    {
        $choices = array($this->choice1, $this->choice2);
        $this->assertSame(array($this->index1, $this->index2), $this->list->getIndicesForChoices($choices));
    }

public function testGetIndicesForChoicesPreservesKeys()
    {
        $choices = array(5 => $this->choice1, 8 => $this->choice2);
        $this->assertSame(array(5 => $this->index1, 8 => $this->index2), $this->list->getIndicesForChoices($choices));
    }

public function testGetIndicesForChoicesPreservesOrder()
    {
        $choices = array($this->choice2, $this->choice1);
        $this->assertSame(array($this->index2, $this->index1), $this->list->getIndicesForChoices($choices));
    }

public function testGetIndicesForChoicesIgnoresNonExistingChoices()
    {
        $choices = array($this->choice1, $this->choice2, 'foobar');
        $this->assertSame(array($this->index1, $this->index2), $this->list->getIndicesForChoices($choices));
    }

public function testGetIndicesForChoicesEmpty()
    {
        $this->assertSame(array(), $this->list->getIndicesForChoices(array()));
    }

public function testGetIndicesForValues()
    {
        // values and indices are always the same
        $values = array($this->value1, $this->value2);
        $this->assertSame(array($this->index1, $this->index2), $this->list->getIndicesForValues($values));
    }

public function testGetIndicesForValuesPreservesKeys()
    {
        // values and indices are always the same
        $values = array(5 => $this->value1, 8 => $this->value2);
        $this->assertSame(array(5 => $this->index1, 8 => $this->index2), $this->list->getIndicesForValues($values));
    }

public function testGetIndicesForValuesPreservesOrder()
    {
        $values = array($this->value2, $this->value1);
        $this->assertSame(array($this->index2, $this->index1), $this->list->getIndicesForValues($values));
    }

public function testGetIndicesForValuesIgnoresNonExistingValues()
    {
        $values = array($this->value1, $this->value2, 'foobar');
        $this->assertSame(array($this->index1, $this->index2), $this->list->getIndicesForValues($values));
    }

public function testGetIndicesForValuesEmpty()
    {
        $this->assertSame(array(), $this->list->getIndicesForValues(array()));
    }

public function testGetChoicesForValues()
    {
        $values = array($this->value1, $this->value2);
        $this->assertSame(array($this->choice1, $this->choice2), $this->list->getChoicesForValues($values));
    }

public function testGetChoicesForValuesPreservesKeys()
    {
        $values = array(5 => $this->value1, 8 => $this->value2);
        $this->assertSame(array(5 => $this->choice1, 8 => $this->choice2), $this->list->getChoicesForValues($values));
    }

public function testGetChoicesForValuesPreservesOrder()
    {
        $values = array($this->value2, $this->value1);
        $this->assertSame(array($this->choice2, $this->choice1), $this->list->getChoicesForValues($values));
    }

public function testGetChoicesForValuesIgnoresNonExistingValues()
    {
        $values = array($this->value1, $this->value2, 'foobar');
        $this->assertSame(array($this->choice1, $this->choice2), $this->list->getChoicesForValues($values));
    }

// https://github.com/symfony/symfony/issues/3446
    public function testGetChoicesForValuesEmpty()
    {
        $this->assertSame(array(), $this->list->getChoicesForValues(array()));
    }

public function testGetValuesForChoices()
    {
        $choices = array($this->choice1, $this->choice2);
        $this->assertSame(array($this->value1, $this->value2), $this->list->getValuesForChoices($choices));
    }

public function testGetValuesForChoicesPreservesKeys()
    {
        $choices = array(5 => $this->choice1, 8 => $this->choice2);
        $this->assertSame(array(5 => $this->value1, 8 => $this->value2), $this->list->getValuesForChoices($choices));
    }

public function testGetValuesForChoicesPreservesOrder()
    {
        $choices = array($this->choice2, $this->choice1);
        $this->assertSame(array($this->value2, $this->value1), $this->list->getValuesForChoices($choices));
    }

public function testGetValuesForChoicesIgnoresNonExistingChoices()
    {
        $choices = array($this->choice1, $this->choice2, 'foobar');
        $this->assertSame(array($this->value1, $this->value2), $this->list->getValuesForChoices($choices));
    }

public function testGetValuesForChoicesEmpty()
    {
        $this->assertSame(array(), $this->list->getValuesForChoices(array()));
    }

/**
     * @return \Symfony\Component\Form\Extension\Core\ChoiceList\ChoiceListInterface
     */
    abstract protected function createChoiceList();

abstract protected function getChoices();

abstract protected function getLabels();

abstract protected function getValues();

abstract protected function getIndices();
}