public function test_valid_dimensions()
{
$upload = new fileupload($this->filesystem, '', false, false, 1, 1, 100, 100);
$file1 = $this->gen_valid_filespec();
$file2 = $this->gen_valid_filespec();
$file2->height = 101;
$file3 = $this->gen_valid_filespec();
$file3->width = 0;
$this->assertTrue($upload->valid_dimensions($file1));
$this->assertFalse($upload->valid_dimensions($file2));
$this->assertFalse($upload->valid_dimensions($file3));
}