Add libtiffpic test suite
Two tests are disabled, both related to tiles, since they do not follow the fully released spec themselves but incidentally decode with libtiff anyways. The two images (`cramps-tile.tif`, `quad-tile.tif`) are tiled layout which libtiff detects by the presence of TileWidth/TileHeight tags. We would detect that by chunks encoded via TileOffsets and TileByteLengths tags. However the images encoded their chunk data into the StripOffsets tag; additionally they contain a RowsPerStrip value anyways. Tests disabled as this is to be resolved in a separate issue (#338) with a decision on treatment of this situation (strictness setting or copying libtiff, also error late for mismatched lengths).
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use std::collections::HashMap;
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use std::{fs::File, path};
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use tiff::decoder::{Decoder, DecodingResult};
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use libtest_mimic::{Arguments, Failed, Trial};
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use walkdir::WalkDir;
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const REFERENCE_DIR: &str = "tests/libtiffpic";
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// `find test/libtiffpic -type f | sort`
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const FILES: &[(&str, bool)] = &[
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("tests/libtiffpic/caspian.tif", true),
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("tests/libtiffpic/cramps.tif", true),
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// FIXME: See <https://github.com/image-rs/image-tiff/issues/338>, this has tiles as
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// StripOffsets and has a RowsPerStrip.
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("tests/libtiffpic/cramps-tile.tif", false),
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("tests/libtiffpic/CVS/Entries", false),
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("tests/libtiffpic/CVS/Repository", false),
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("tests/libtiffpic/CVS/Root", false),
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("tests/libtiffpic/depth/CVS/Entries", false),
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("tests/libtiffpic/depth/CVS/Repository", false),
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("tests/libtiffpic/depth/CVS/Root", false),
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("tests/libtiffpic/depth/flower-minisblack-02.tif", true),
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("tests/libtiffpic/depth/flower-minisblack-04.tif", true),
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("tests/libtiffpic/depth/flower-minisblack-06.tif", true),
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("tests/libtiffpic/depth/flower-minisblack-08.tif", true),
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("tests/libtiffpic/depth/flower-minisblack-10.tif", true),
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("tests/libtiffpic/depth/flower-minisblack-12.tif", true),
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("tests/libtiffpic/depth/flower-minisblack-14.tif", true),
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("tests/libtiffpic/depth/flower-minisblack-16.tif", true),
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("tests/libtiffpic/depth/flower-minisblack-24.tif", true),
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("tests/libtiffpic/depth/flower-minisblack-32.tif", true),
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("tests/libtiffpic/depth/flower-palette-02.tif", true),
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("tests/libtiffpic/depth/flower-palette-04.tif", true),
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("tests/libtiffpic/depth/flower-palette-08.tif", true),
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("tests/libtiffpic/depth/flower-palette-16.tif", true),
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("tests/libtiffpic/depth/flower-rgb-contig-02.tif", true),
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("tests/libtiffpic/depth/flower-rgb-contig-04.tif", true),
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("tests/libtiffpic/depth/flower-rgb-contig-08.tif", true),
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("tests/libtiffpic/depth/flower-rgb-contig-10.tif", true),
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("tests/libtiffpic/depth/flower-rgb-contig-12.tif", true),
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("tests/libtiffpic/depth/flower-rgb-contig-14.tif", true),
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("tests/libtiffpic/depth/flower-rgb-contig-16.tif", true),
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("tests/libtiffpic/depth/flower-rgb-contig-24.tif", true),
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("tests/libtiffpic/depth/flower-rgb-contig-32.tif", true),
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("tests/libtiffpic/depth/flower-rgb-planar-02.tif", true),
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("tests/libtiffpic/depth/flower-rgb-planar-04.tif", true),
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("tests/libtiffpic/depth/flower-rgb-planar-08.tif", true),
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("tests/libtiffpic/depth/flower-rgb-planar-10.tif", true),
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("tests/libtiffpic/depth/flower-rgb-planar-12.tif", true),
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("tests/libtiffpic/depth/flower-rgb-planar-14.tif", true),
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("tests/libtiffpic/depth/flower-rgb-planar-16.tif", true),
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("tests/libtiffpic/depth/flower-rgb-planar-24.tif", true),
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("tests/libtiffpic/depth/flower-rgb-planar-32.tif", true),
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(
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"tests/libtiffpic/depth/flower-separated-contig-08.tif",
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true,
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),
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(
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"tests/libtiffpic/depth/flower-separated-contig-16.tif",
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true,
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),
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(
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"tests/libtiffpic/depth/flower-separated-planar-08.tif",
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true,
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),
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(
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"tests/libtiffpic/depth/flower-separated-planar-16.tif",
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true,
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),
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("tests/libtiffpic/depth/genimages", false),
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("tests/libtiffpic/depth/README.txt", false),
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("tests/libtiffpic/depth/summary.txt", false),
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("tests/libtiffpic/dscf0013.tif", true),
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("tests/libtiffpic/fax2d.tif", true),
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// No support for direct CCITT Group 3 1D format
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("tests/libtiffpic/g3test.g3", false),
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("tests/libtiffpic/g3test.tif", true),
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("tests/libtiffpic/jello.tif", true),
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("tests/libtiffpic/jim___ah.tif", true),
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("tests/libtiffpic/jim___cg.tif", true),
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("tests/libtiffpic/jim___dg.tif", true),
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("tests/libtiffpic/jim___gg.tif", true),
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("tests/libtiffpic/ladoga.tif", true),
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("tests/libtiffpic/off_l16.tif", true),
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("tests/libtiffpic/off_luv24.tif", true),
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("tests/libtiffpic/off_luv32.tif", true),
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("tests/libtiffpic/oxford.tif", true),
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("tests/libtiffpic/pc260001.tif", true),
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("tests/libtiffpic/quad-jpeg.tif", true),
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("tests/libtiffpic/quad-lzw.tif", true),
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// FIXME: See <https://github.com/image-rs/image-tiff/issues/338>, this has tiles as
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// StripOffsets and has a RowsPerStrip.
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("tests/libtiffpic/quad-tile.tif", false),
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("tests/libtiffpic/README", false),
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("tests/libtiffpic/smallliz.tif", true),
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("tests/libtiffpic/strike.tif", true),
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("tests/libtiffpic/text.tif", true),
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("tests/libtiffpic/ycbcr-cat.tif", true),
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("tests/libtiffpic/zackthecat.tif", true),
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];
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fn main() {
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let mut candidates: HashMap<_, _> = FILES.iter().copied().collect();
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let mut trials = Vec::new();
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for entry in WalkDir::new(REFERENCE_DIR) {
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let entry = entry.unwrap();
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if !entry.file_type().is_file() {
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continue;
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}
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let Some(path) = entry.path().to_str() else {
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continue;
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};
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// Mark this path as consumed in either case by removing it.
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let Some(should_decode) = candidates.remove(path) else {
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panic!("File {} not in reference list", path);
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};
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// Check if we should turn it into a test case.
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if !should_decode {
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continue;
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}
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let path = path.to_string();
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trials.push(Trial::test(
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path.to_string(),
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move || -> Result<(), Failed> {
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decode_libtiffpic(&path)
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.map_err(|e| Failed::from(format_args!("Decoding failed for {}: {}", path, e)))
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},
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));
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}
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if !candidates.is_empty() {
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for (path, _) in candidates {
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eprintln!("Reference file {} not found in directory walk", path);
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}
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panic!("Some reference files were not found");
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}
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let args = Arguments::from_args();
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libtest_mimic::run(&args, trials).exit();
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}
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fn decode_libtiffpic(path: &str) -> Result<(), tiff::TiffError> {
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let path = path::PathBuf::from(env!("CARGO_MANIFEST_DIR")).join(path);
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let img_file = File::open(path)?;
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let mut decoder = Decoder::new(img_file)?;
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let mut buffer = DecodingResult::U8(vec![]);
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loop {
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let _layout = decoder.read_image_to_buffer(&mut buffer);
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if !decoder.more_images() {
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break;
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}
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decoder.next_image()?;
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}
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Ok(())
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}
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