--- /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\Token;
+use Symfony\Component\CssSelector\Parser\TokenStream;
+
+class TokenStreamTest extends TestCase
+{
+ public function testGetNext()
+ {
+ $stream = new TokenStream();
+ $stream->push($t1 = new Token(Token::TYPE_IDENTIFIER, 'h1', 0));
+ $stream->push($t2 = new Token(Token::TYPE_DELIMITER, '.', 2));
+ $stream->push($t3 = new Token(Token::TYPE_IDENTIFIER, 'title', 3));
+
+ $this->assertSame($t1, $stream->getNext());
+ $this->assertSame($t2, $stream->getNext());
+ $this->assertSame($t3, $stream->getNext());
+ }
+
+ public function testGetPeek()
+ {
+ $stream = new TokenStream();
+ $stream->push($t1 = new Token(Token::TYPE_IDENTIFIER, 'h1', 0));
+ $stream->push($t2 = new Token(Token::TYPE_DELIMITER, '.', 2));
+ $stream->push($t3 = new Token(Token::TYPE_IDENTIFIER, 'title', 3));
+
+ $this->assertSame($t1, $stream->getPeek());
+ $this->assertSame($t1, $stream->getNext());
+ $this->assertSame($t2, $stream->getPeek());
+ $this->assertSame($t2, $stream->getPeek());
+ $this->assertSame($t2, $stream->getNext());
+ }
+
+ public function testGetNextIdentifier()
+ {
+ $stream = new TokenStream();
+ $stream->push(new Token(Token::TYPE_IDENTIFIER, 'h1', 0));
+
+ $this->assertEquals('h1', $stream->getNextIdentifier());
+ }
+
+ public function testFailToGetNextIdentifier()
+ {
+ $this->{method_exists($this, $_ = 'expectException') ? $_ : 'setExpectedException'}('Symfony\Component\CssSelector\Exception\SyntaxErrorException');
+
+ $stream = new TokenStream();
+ $stream->push(new Token(Token::TYPE_DELIMITER, '.', 2));
+ $stream->getNextIdentifier();
+ }
+
+ public function testGetNextIdentifierOrStar()
+ {
+ $stream = new TokenStream();
+
+ $stream->push(new Token(Token::TYPE_IDENTIFIER, 'h1', 0));
+ $this->assertEquals('h1', $stream->getNextIdentifierOrStar());
+
+ $stream->push(new Token(Token::TYPE_DELIMITER, '*', 0));
+ $this->assertNull($stream->getNextIdentifierOrStar());
+ }
+
+ public function testFailToGetNextIdentifierOrStar()
+ {
+ $this->{method_exists($this, $_ = 'expectException') ? $_ : 'setExpectedException'}('Symfony\Component\CssSelector\Exception\SyntaxErrorException');
+
+ $stream = new TokenStream();
+ $stream->push(new Token(Token::TYPE_DELIMITER, '.', 2));
+ $stream->getNextIdentifierOrStar();
+ }
+
+ public function testSkipWhitespace()
+ {
+ $stream = new TokenStream();
+ $stream->push($t1 = new Token(Token::TYPE_IDENTIFIER, 'h1', 0));
+ $stream->push($t2 = new Token(Token::TYPE_WHITESPACE, ' ', 2));
+ $stream->push($t3 = new Token(Token::TYPE_IDENTIFIER, 'h1', 3));
+
+ $stream->skipWhitespace();
+ $this->assertSame($t1, $stream->getNext());
+
+ $stream->skipWhitespace();
+ $this->assertSame($t3, $stream->getNext());
+ }
+}