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<?php namespace GuzzleHttp\Tests\Psr7; use GuzzleHttp\Psr7; use GuzzleHttp\Psr7\FnStream; /** * @covers GuzzleHttp\Psr7\FnStream */ class FnStreamTest extends \PHPUnit_Framework_TestCase { /** * @expectedException \BadMethodCallException * @expectedExceptionMessage seek() is not implemented in the FnStream */ public function testThrowsWhenNotImplemented() { (new FnStream([]))->seek(1); } public function testProxiesToFunction() { $s = new FnStream([ 'read' => function ($len) { $this->assertEquals(3, $len); return 'foo'; } ]); $this->assertEquals('foo', $s->read(3)); } public function testCanCloseOnDestruct() { $called = false; $s = new FnStream([ 'close' => function () use (&$called) { $called = true; } ]); unset($s); $this->assertTrue($called); } public function testDoesNotRequireClose() { $s = new FnStream([]); unset($s); } public function testDecoratesStream() { $a = Psr7\stream_for('foo'); $b = FnStream::decorate($a, []); $this->assertEquals(3, $b->getSize()); $this->assertEquals($b->isWritable(), true); $this->assertEquals($b->isReadable(), true); $this->assertEquals($b->isSeekable(), true); $this->assertEquals($b->read(3), 'foo'); $this->assertEquals($b->tell(), 3); $this->assertEquals($a->tell(), 3); $this->assertSame('', $a->read(1)); $this->assertEquals($b->eof(), true); $this->assertEquals($a->eof(), true); $b->seek(0); $this->assertEquals('foo', (string) $b); $b->seek(0); $this->assertEquals('foo', $b->getContents()); $this->assertEquals($a->getMetadata(), $b->getMetadata()); $b->seek(0, SEEK_END); $b->write('bar'); $this->assertEquals('foobar', (string) $b); $this->assertInternalType('resource', $b->detach()); $b->close(); } public function testDecoratesWithCustomizations() { $called = false; $a = Psr7\stream_for('foo'); $b = FnStream::decorate($a, [ 'read' => function ($len) use (&$called, $a) { $called = true; return $a->read($len); } ]); $this->assertEquals('foo', $b->read(3)); $this->assertTrue($called); } }