Edit: InputTest.php

Editing: InputTest.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\Console\Tests\Input;

use Symfony\Component\Console\Input\ArrayInput;
use Symfony\Component\Console\Input\InputDefinition;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputOption;

class InputTest extends \PHPUnit_Framework_TestCase
{
    public function testConstructor()
    {
        $input = new ArrayInput(array('name' => 'foo'), new InputDefinition(array(new InputArgument('name'))));
        $this->assertEquals('foo', $input->getArgument('name'), '->__construct() takes a InputDefinition as an argument');
    }

public function testOptions()
    {
        $input = new ArrayInput(array('--name' => 'foo'), new InputDefinition(array(new InputOption('name'))));
        $this->assertEquals('foo', $input->getOption('name'), '->getOption() returns the value for the given option');

$input->setOption('name', 'bar');
        $this->assertEquals('bar', $input->getOption('name'), '->setOption() sets the value for a given option');
        $this->assertEquals(array('name' => 'bar'), $input->getOptions(), '->getOptions() returns all option values');

$input = new ArrayInput(array('--name' => 'foo'), new InputDefinition(array(new InputOption('name'), new InputOption('bar', '', InputOption::VALUE_OPTIONAL, '', 'default'))));
        $this->assertEquals('default', $input->getOption('bar'), '->getOption() returns the default value for optional options');
        $this->assertEquals(array('name' => 'foo', 'bar' => 'default'), $input->getOptions(), '->getOptions() returns all option values, even optional ones');
    }

/**
     * @expectedException        \InvalidArgumentException
     * @expectedExceptionMessage The "foo" option does not exist.
     */
    public function testSetInvalidOption()
    {
        $input = new ArrayInput(array('--name' => 'foo'), new InputDefinition(array(new InputOption('name'), new InputOption('bar', '', InputOption::VALUE_OPTIONAL, '', 'default'))));
        $input->setOption('foo', 'bar');
    }

/**
     * @expectedException        \InvalidArgumentException
     * @expectedExceptionMessage The "foo" option does not exist.
     */
    public function testGetInvalidOption()
    {
        $input = new ArrayInput(array('--name' => 'foo'), new InputDefinition(array(new InputOption('name'), new InputOption('bar', '', InputOption::VALUE_OPTIONAL, '', 'default'))));
        $input->getOption('foo');
    }

public function testArguments()
    {
        $input = new ArrayInput(array('name' => 'foo'), new InputDefinition(array(new InputArgument('name'))));
        $this->assertEquals('foo', $input->getArgument('name'), '->getArgument() returns the value for the given argument');

$input->setArgument('name', 'bar');
        $this->assertEquals('bar', $input->getArgument('name'), '->setArgument() sets the value for a given argument');
        $this->assertEquals(array('name' => 'bar'), $input->getArguments(), '->getArguments() returns all argument values');

$input = new ArrayInput(array('name' => 'foo'), new InputDefinition(array(new InputArgument('name'), new InputArgument('bar', InputArgument::OPTIONAL, '', 'default'))));
        $this->assertEquals('default', $input->getArgument('bar'), '->getArgument() returns the default value for optional arguments');
        $this->assertEquals(array('name' => 'foo', 'bar' => 'default'), $input->getArguments(), '->getArguments() returns all argument values, even optional ones');
    }

/**
     * @expectedException        \InvalidArgumentException
     * @expectedExceptionMessage The "foo" argument does not exist.
     */
    public function testSetInvalidArgument()
    {
        $input = new ArrayInput(array('name' => 'foo'), new InputDefinition(array(new InputArgument('name'), new InputArgument('bar', InputArgument::OPTIONAL, '', 'default'))));
        $input->setArgument('foo', 'bar');
    }

/**
     * @expectedException        \InvalidArgumentException
     * @expectedExceptionMessage The "foo" argument does not exist.
     */
    public function testGetInvalidArgument()
    {
        $input = new ArrayInput(array('name' => 'foo'), new InputDefinition(array(new InputArgument('name'), new InputArgument('bar', InputArgument::OPTIONAL, '', 'default'))));
        $input->getArgument('foo');
    }

/**
     * @expectedException        \RuntimeException
     * @expectedExceptionMessage Not enough arguments.
     */
    public function testValidateWithMissingArguments()
    {
        $input = new ArrayInput(array());
        $input->bind(new InputDefinition(array(new InputArgument('name', InputArgument::REQUIRED))));
        $input->validate();
    }

public function testValidate()
    {
        $input = new ArrayInput(array('name' => 'foo'));
        $input->bind(new InputDefinition(array(new InputArgument('name', InputArgument::REQUIRED))));

$this->assertNull($input->validate());
    }

public function testSetGetInteractive()
    {
        $input = new ArrayInput(array());
        $this->assertTrue($input->isInteractive(), '->isInteractive() returns whether the input should be interactive or not');
        $input->setInteractive(false);
        $this->assertFalse($input->isInteractive(), '->setInteractive() changes the interactive flag');
    }
}