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diff --git a/vendor/symfony/console/Symfony/Component/Console/Tests/Helper/DialogHelperTest.php b/vendor/symfony/console/Symfony/Component/Console/Tests/Helper/DialogHelperTest.php
new file mode 100644
index 0000000..a486f62
--- /dev/null
+++ b/vendor/symfony/console/Symfony/Component/Console/Tests/Helper/DialogHelperTest.php
@@ -0,0 +1,93 @@
+<?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\Helper;
+
+use Symfony\Component\Console\Helper\DialogHelper;
+use Symfony\Component\Console\Helper\HelperSet;
+use Symfony\Component\Console\Helper\FormatterHelper;
+use Symfony\Component\Console\Output\StreamOutput;
+
+class DialogHelperTest extends \PHPUnit_Framework_TestCase
+{
+    public function testAsk()
+    {
+        $dialog = new DialogHelper();
+
+        $dialog->setInputStream($this->getInputStream("\n8AM\n"));
+
+        $this->assertEquals('2PM', $dialog->ask($this->getOutputStream(), 'What time is it?', '2PM'));
+        $this->assertEquals('8AM', $dialog->ask($output = $this->getOutputStream(), 'What time is it?', '2PM'));
+
+        rewind($output->getStream());
+        $this->assertEquals('What time is it?', stream_get_contents($output->getStream()));
+    }
+
+    public function testAskConfirmation()
+    {
+        $dialog = new DialogHelper();
+
+        $dialog->setInputStream($this->getInputStream("\n\n"));
+        $this->assertTrue($dialog->askConfirmation($this->getOutputStream(), 'Do you like French fries?'));
+        $this->assertFalse($dialog->askConfirmation($this->getOutputStream(), 'Do you like French fries?', false));
+
+        $dialog->setInputStream($this->getInputStream("y\nyes\n"));
+        $this->assertTrue($dialog->askConfirmation($this->getOutputStream(), 'Do you like French fries?', false));
+        $this->assertTrue($dialog->askConfirmation($this->getOutputStream(), 'Do you like French fries?', false));
+
+        $dialog->setInputStream($this->getInputStream("n\nno\n"));
+        $this->assertFalse($dialog->askConfirmation($this->getOutputStream(), 'Do you like French fries?', true));
+        $this->assertFalse($dialog->askConfirmation($this->getOutputStream(), 'Do you like French fries?', true));
+    }
+
+    public function testAskAndValidate()
+    {
+        $dialog = new DialogHelper();
+        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $dialog->setHelperSet($helperSet);
+
+        $question ='What color was the white horse of Henry IV?';
+        $error = 'This is not a color!';
+        $validator = function ($color) use ($error) {
+            if (!in_array($color, array('white', 'black'))) {
+                throw new \InvalidArgumentException($error);
+            }
+
+            return $color;
+        };
+
+        $dialog->setInputStream($this->getInputStream("\nblack\n"));
+        $this->assertEquals('white', $dialog->askAndValidate($this->getOutputStream(), $question, $validator, 2, 'white'));
+        $this->assertEquals('black', $dialog->askAndValidate($this->getOutputStream(), $question, $validator, 2, 'white'));
+
+        $dialog->setInputStream($this->getInputStream("green\nyellow\norange\n"));
+        try {
+            $this->assertEquals('white', $dialog->askAndValidate($this->getOutputStream(), $question, $validator, 2, 'white'));
+            $this->fail();
+        } catch (\InvalidArgumentException $e) {
+            $this->assertEquals($error, $e->getMessage());
+        }
+    }
+
+    protected function getInputStream($input)
+    {
+        $stream = fopen('php://memory', 'r+', false);
+        fputs($stream, $input);
+        rewind($stream);
+
+        return $stream;
+    }
+
+    protected function getOutputStream()
+    {
+        return new StreamOutput(fopen('php://memory', 'r+', false));
+    }
+}