--- /dev/null
+<?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\Formatter;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Console\Formatter\OutputFormatterStyleStack;
+use Symfony\Component\Console\Formatter\OutputFormatterStyle;
+
+class OutputFormatterStyleStackTest extends TestCase
+{
+ public function testPush()
+ {
+ $stack = new OutputFormatterStyleStack();
+ $stack->push($s1 = new OutputFormatterStyle('white', 'black'));
+ $stack->push($s2 = new OutputFormatterStyle('yellow', 'blue'));
+
+ $this->assertEquals($s2, $stack->getCurrent());
+
+ $stack->push($s3 = new OutputFormatterStyle('green', 'red'));
+
+ $this->assertEquals($s3, $stack->getCurrent());
+ }
+
+ public function testPop()
+ {
+ $stack = new OutputFormatterStyleStack();
+ $stack->push($s1 = new OutputFormatterStyle('white', 'black'));
+ $stack->push($s2 = new OutputFormatterStyle('yellow', 'blue'));
+
+ $this->assertEquals($s2, $stack->pop());
+ $this->assertEquals($s1, $stack->pop());
+ }
+
+ public function testPopEmpty()
+ {
+ $stack = new OutputFormatterStyleStack();
+ $style = new OutputFormatterStyle();
+
+ $this->assertEquals($style, $stack->pop());
+ }
+
+ public function testPopNotLast()
+ {
+ $stack = new OutputFormatterStyleStack();
+ $stack->push($s1 = new OutputFormatterStyle('white', 'black'));
+ $stack->push($s2 = new OutputFormatterStyle('yellow', 'blue'));
+ $stack->push($s3 = new OutputFormatterStyle('green', 'red'));
+
+ $this->assertEquals($s2, $stack->pop($s2));
+ $this->assertEquals($s1, $stack->pop());
+ }
+
+ /**
+ * @expectedException \InvalidArgumentException
+ */
+ public function testInvalidPop()
+ {
+ $stack = new OutputFormatterStyleStack();
+ $stack->push(new OutputFormatterStyle('white', 'black'));
+ $stack->pop(new OutputFormatterStyle('yellow', 'blue'));
+ }
+}