ctr: null
  resolution (width,height,depth) =  0 0 1
  origin (x,y,z) =  0 0 0
  full res =  0 0 0
  full origin =  0 0 0
  untiled
  format =  unknown
  nchannels =  0
  channelformats =  ()
  channel names =  ()
  alpha channel =  -1
  z channel =  -1
  deep =  False

ctr: UINT16
  resolution (width,height,depth) =  0 0 1
  origin (x,y,z) =  0 0 0
  full res =  0 0 0
  full origin =  0 0 0
  untiled
  format =  uint16
  nchannels =  0
  channelformats =  ()
  channel names =  ()
  alpha channel =  -1
  z channel =  -1
  deep =  False

ctr: 640x480,3 UINT8
  resolution (width,height,depth) =  640 480 1
  origin (x,y,z) =  0 0 0
  full res =  640 480 1
  full origin =  0 0 0
  untiled
  format =  uint8
  nchannels =  3
  channelformats =  ()
  channel names =  ('R', 'G', 'B')
  alpha channel =  -1
  z channel =  -1
  deep =  False

lots of fields
  resolution (width,height,depth) =  640 480 1
  origin (x,y,z) =  1 2 3
  full res =  1280 960 7
  full origin =  4 5 6
  tile size =  32 64 16
  format =  float
  nchannels =  5
  channelformats =  (<TypeDesc 'uint8'>, <TypeDesc 'uint8'>, <TypeDesc 'uint8'>, <TypeDesc 'uint8'>, <TypeDesc 'float'>)
  channel names =  ('R', 'G', 'B', 'A', 'channel4')
  alpha channel =  3
  z channel =  -1
  deep =  False

 B channel = 2
 foo channel = -1
channel bytes = 4
  channel_bytes(1) = 4 native 1
  channel_bytes(4) = 4 native 4
pixel bytes = 20 native 8
scanline bytes = 12800 native 5120
tile bytes = 655360 native 262144
image bytes = 6144000 native 2457600
tile pixels = 32768
image_pixels = 307200
size_t_safe = True
get_channelformats: (<TypeDesc 'uint8'>, <TypeDesc 'uint8'>, <TypeDesc 'uint8'>, <TypeDesc 'uint8'>, <TypeDesc 'float'>)
channelindex('G') = 1
channel_name(1) = G
channelformat(1) = uint8

get_int_attribute('foo_int') retrieves 14
get_int_attribute('foo_int',21) with default retrieves 14
get_int_attribute('foo_no',23) retrieves 23
get_float_attribute('foo_float') retrieves 3.1400001049
get_float_attribute('foo_float_no') retrieves 0.0
get_float_attribute('foo_float_no',2.7) retrieves 2.70000004768
get_string_attribute('foo_str') retrieves blah
get_string_attribute('foo_str_no') retrieves 
get_string_attribute('foo_str_no','xx') retrieves xx

getattribute('foo_int') retrieves 14
getattribute('foo_float') retrieves 3.1400001049
getattribute('foo_str') retrieves blah
getattribute('foo_vector') retrieves (1.0, 0.0, 11.0)
getattribute('foo_matrix') retrieves (1.0, 0.0, 0.0, 0.0, 0.0, 2.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 1.0, 2.0, 3.0, 1.0)
getattribute('foo_no') retrieves None

extra_attribs size is 5
0 foo_str string blah
"blah"
1 foo_int int 14
14
2 foo_float float 3.1400001049
3.14
3 foo_vector vector (1.0, 0.0, 11.0)
1 0 11
4 foo_matrix matrix (1.0, 0.0, 0.0, 0.0, 0.0, 2.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 1.0, 2.0, 3.0, 1.0)
1 0 0 0 0 2 0 0 0 0 1 0 1 2 3 1

seralize(xml):
<ImageSpec version="22">
<x>1</x>
<y>2</y>
<z>3</z>
<width>640</width>
<height>480</height>
<depth>1</depth>
<full_x>4</full_x>
<full_y>5</full_y>
<full_z>6</full_z>
<full_width>1280</full_width>
<full_height>960</full_height>
<full_depth>7</full_depth>
<tile_width>32</tile_width>
<tile_height>64</tile_height>
<tile_depth>16</tile_depth>
<format>float</format>
<nchannels>5</nchannels>
<channelnames>
<channelname>R</channelname>
<channelname>G</channelname>
<channelname>B</channelname>
<channelname>A</channelname>
<channelname>channel4</channelname>
</channelnames>
<alpha_channel>3</alpha_channel>
<z_channel>-1</z_channel>
<deep>0</deep>
<attrib name="foo_str" type="string">blah</attrib>
<attrib name="foo_int" type="int">14</attrib>
<attrib name="foo_float" type="float">3.14</attrib>
<attrib name="foo_vector" type="vector">1 0 11</attrib>
<attrib name="foo_matrix" type="matrix">1 0 0 0 0 2 0 0 0 0 1 0 1 2 3 1</attrib>
</ImageSpec>

serialize(text, human):
 640 x  480, 5 channel, uint8/uint8/uint8/uint8/float
    channel list: R (uint8), G (uint8), B (uint8), A (uint8), channel4 (float)
    pixel data origin: x=1, y=2
    full/display size: 1280 x 960
    full/display origin: 4, 5
    tile size: 32 x 64
    foo_float: 3.14
    foo_int: 14
    foo_matrix: 1 0 0 0 0 2 0 0 0 0 1 0 1 2 3 1
    foo_str: "blah"
    foo_vector: 1 0 11

Testing construction from ROI:
  resolution (width,height,depth) =  640 480 1
  origin (x,y,z) =  0 0 0
  full res =  640 480 1
  full origin =  0 0 0
  untiled
  format =  float
  nchannels =  3
  channelformats =  ()
  channel names =  ('R', 'G', 'B')
  alpha channel =  -1
  z channel =  -1
  deep =  False


Testing global attribute store/retrieve:
get_string_attribute plugin_searchpath :  perfect
get_int_attribute plugin_searchpath :  0
getattribute TypeString plugin_searchpath :  perfect
getattribute TypeFloat plugin_searchpath :  None
getattribute TypeString blahblah :  None
Done.