Kraken\_Unit\Filesystem\FilesystemTest::testApiAppend_ThrowsException_WhenReadThrowsException PHP Метод

    public function testApiAppend_ThrowsException_WhenReadThrowsException()
    {
        $path = 'path';
        $write = 'write';
        $read = 'read';
        $expected = new Exception();
        $ex = null;
        $this->expect('read', [$path])->willThrow($expected);
        $this->prevent('update', [$path, $read . $write]);
        try {
            $this->fs->append($path, $write);
        } catch (Exception $ex) {
        }
        $this->assertInstanceOf(WriteException::class, $ex);
        $this->assertSame($expected, $ex->getPrevious());
    }