pixie/tests/test_png.nim

import pixie, pixie/fileformats/png, pngsuite, strformat

# for file in pngSuiteFiles:
#   let
#     original = cast[seq[uint8]](
#       readFile(&"tests/images/png/pngsuite/{file}.png")
#     )
#     decoded = decodePng(original)
#     encoded = encodePng(decoded)
#     decoded2 = decodePng(cast[seq[uint8]](encoded))

#   doAssert decoded.height == decoded2.height
#   doAssert decoded.width == decoded2.width
#   doAssert decoded.data == decoded2.data

block:
  for channels in 1 .. 4:
    var data: seq[uint8]
    for x in 0 ..< 16:
      for y in 0 ..< 16:
        var components = newSeq[uint8](channels)
        for i in 0 ..< channels:
          components[i] = (x * 16).uint8
        data.add(components)
    let encoded = encodePng(16, 16, channels, data[0].addr, data.len)

  for file in pngSuiteCorruptedFiles:
    try:
      discard decodePng(readFile(&"tests/images/png/pngsuite/{file}.png"))
      doAssert false
    except PixieError:
      discard

block:
  discard readImage("tests/images/png/trailing_data.png")