vendor/swiftmailer/swiftmailer/tests/acceptance/Swift/ByteStream/FileByteStreamAcceptanceTest.php

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<?php

class Swift_ByteStream_FileByteStreamAcceptanceTest extends \PHPUnit_Framework_TestCase
{
    private $_testFile;

    protected function setUp()
    {
        $this->_testFile = sys_get_temp_dir().'/swift-test-file'.__CLASS__;
        file_put_contents($this->_testFile, 'abcdefghijklm');
    }

    protected function tearDown()
    {
        unlink($this->_testFile);
    }

    public function testFileDataCanBeRead()
    {
        $file = $this->_createFileStream($this->_testFile);
        $str = '';
        while (false !== $bytes = $file->read(8192)) {
            $str .= $bytes;
        }
        $this->assertEquals('abcdefghijklm', $str);
    }

    public function testFileDataCanBeReadSequentially()
    {
        $file = $this->_createFileStream($this->_testFile);
        $this->assertEquals('abcde', $file->read(5));
        $this->assertEquals('fghijklm', $file->read(8));
        $this->assertFalse($file->read(1));
    }

    public function testFilenameIsReturned()
    {
        $file = $this->_createFileStream($this->_testFile);
        $this->assertEquals($this->_testFile, $file->getPath());
    }

    public function testFileCanBeWrittenTo()
    {
        $file = $this->_createFileStream($this->_testFile, true);
        $file->write('foobar');
        $this->assertEquals('foobar', $file->read(8192));
    }

    public function testReadingFromThenWritingToFile()
    {
        $file = $this->_createFileStream($this->_testFile, true);
        $file->write('foobar');
        $this->assertEquals('foobar', $file->read(8192));
        $file->write('zipbutton');
        $this->assertEquals('zipbutton', $file->read(8192));
    }

    public function testWritingToFileWithCanonicalization()
    {
        $file = $this->_createFileStream($this->_testFile, true);