1<?php 2namespace GuzzleHttp\Tests\Stream; 3 4use GuzzleHttp\Stream\Exception\CannotAttachException; 5use GuzzleHttp\Stream\NullStream; 6use PHPUnit\Framework\TestCase; 7 8class NullStreamTest extends TestCase 9{ 10 public function testDoesNothing() 11 { 12 $b = new NullStream(); 13 $this->assertEquals('', $b->read(10)); 14 $this->assertEquals(4, $b->write('test')); 15 $this->assertEquals('', (string) $b); 16 $this->assertNull($b->getMetadata('a')); 17 $this->assertEquals([], $b->getMetadata()); 18 $this->assertEquals(0, $b->getSize()); 19 $this->assertEquals('', $b->getContents()); 20 $this->assertEquals(0, $b->tell()); 21 22 $this->assertTrue($b->isReadable()); 23 $this->assertTrue($b->isWritable()); 24 $this->assertTrue($b->isSeekable()); 25 $this->assertFalse($b->seek(10)); 26 27 $this->assertTrue($b->eof()); 28 $b->detach(); 29 $this->assertTrue($b->eof()); 30 $b->close(); 31 } 32 33 public function testCannotAttach() 34 { 35 $this->expectException(CannotAttachException::class); 36 $p = new NullStream(); 37 $p->attach('a'); 38 } 39} 40