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diff --git a/vendor/symfony/console/Tests/TerminalTest.php b/vendor/symfony/console/Tests/TerminalTest.php
new file mode 100644
index 000000000..91af1d0ab
--- /dev/null
+++ b/vendor/symfony/console/Tests/TerminalTest.php
@@ -0,0 +1,44 @@
+<?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;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Console\Terminal;
+
+class TerminalTest extends TestCase
+{
+    public function test()
+    {
+        putenv('COLUMNS=100');
+        putenv('LINES=50');
+        $terminal = new Terminal();
+        $this->assertSame(100, $terminal->getWidth());
+        $this->assertSame(50, $terminal->getHeight());
+
+        putenv('COLUMNS=120');
+        putenv('LINES=60');
+        $terminal = new Terminal();
+        $this->assertSame(120, $terminal->getWidth());
+        $this->assertSame(60, $terminal->getHeight());
+    }
+
+    public function test_zero_values()
+    {
+        putenv('COLUMNS=0');
+        putenv('LINES=0');
+
+        $terminal = new Terminal();
+
+        $this->assertSame(0, $terminal->getWidth());
+        $this->assertSame(0, $terminal->getHeight());
+    }
+}