--- /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\CssSelector\Tests\Parser;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\CssSelector\Parser\Reader;
+
+class ReaderTest extends TestCase
+{
+ public function testIsEOF()
+ {
+ $reader = new Reader('');
+ $this->assertTrue($reader->isEOF());
+
+ $reader = new Reader('hello');
+ $this->assertFalse($reader->isEOF());
+
+ $this->assignPosition($reader, 2);
+ $this->assertFalse($reader->isEOF());
+
+ $this->assignPosition($reader, 5);
+ $this->assertTrue($reader->isEOF());
+ }
+
+ public function testGetRemainingLength()
+ {
+ $reader = new Reader('hello');
+ $this->assertEquals(5, $reader->getRemainingLength());
+
+ $this->assignPosition($reader, 2);
+ $this->assertEquals(3, $reader->getRemainingLength());
+
+ $this->assignPosition($reader, 5);
+ $this->assertEquals(0, $reader->getRemainingLength());
+ }
+
+ public function testGetSubstring()
+ {
+ $reader = new Reader('hello');
+ $this->assertEquals('he', $reader->getSubstring(2));
+ $this->assertEquals('el', $reader->getSubstring(2, 1));
+
+ $this->assignPosition($reader, 2);
+ $this->assertEquals('ll', $reader->getSubstring(2));
+ $this->assertEquals('lo', $reader->getSubstring(2, 1));
+ }
+
+ public function testGetOffset()
+ {
+ $reader = new Reader('hello');
+ $this->assertEquals(2, $reader->getOffset('ll'));
+ $this->assertFalse($reader->getOffset('w'));
+
+ $this->assignPosition($reader, 2);
+ $this->assertEquals(0, $reader->getOffset('ll'));
+ $this->assertFalse($reader->getOffset('he'));
+ }
+
+ public function testFindPattern()
+ {
+ $reader = new Reader('hello');
+
+ $this->assertFalse($reader->findPattern('/world/'));
+ $this->assertEquals(array('hello', 'h'), $reader->findPattern('/^([a-z]).*/'));
+
+ $this->assignPosition($reader, 2);
+ $this->assertFalse($reader->findPattern('/^h.*/'));
+ $this->assertEquals(array('llo'), $reader->findPattern('/^llo$/'));
+ }
+
+ public function testMoveForward()
+ {
+ $reader = new Reader('hello');
+ $this->assertEquals(0, $reader->getPosition());
+
+ $reader->moveForward(2);
+ $this->assertEquals(2, $reader->getPosition());
+ }
+
+ public function testToEnd()
+ {
+ $reader = new Reader('hello');
+ $reader->moveToEnd();
+ $this->assertTrue($reader->isEOF());
+ }
+
+ private function assignPosition(Reader $reader, $value)
+ {
+ $position = new \ReflectionProperty($reader, 'position');
+ $position->setAccessible(true);
+ $position->setValue($reader, $value);
+ }
+}