use std::{ fs::remove_file, path::{Path, PathBuf}, }; use oxipng::{internal_tests::*, *}; const GRAYSCALE: u8 = 0; const RGB: u8 = 2; const INDEXED: u8 = 3; const GRAYSCALE_ALPHA: u8 = 4; const RGBA: u8 = 6; fn get_opts(input: &Path) -> (OutFile, oxipng::Options) { let options = oxipng::Options { force: true, fast_evaluation: false, filters: indexset! {FilterStrategy::NONE}, ..Default::default() }; (OutFile::from_path(input.with_extension("out.png")), options) } fn test_it_converts( input: &str, optimize_alpha: bool, color_type_in: u8, bit_depth_in: BitDepth, color_type_out: u8, bit_depth_out: BitDepth, ) { let input = PathBuf::from(input); let (output, mut opts) = get_opts(&input); opts.optimize_alpha = optimize_alpha; let png = PngData::new(&input, &opts).unwrap(); assert_eq!(png.raw.ihdr.color_type.png_header_code(), color_type_in); assert_eq!(png.raw.ihdr.bit_depth, bit_depth_in, "test file is broken"); assert!(!png.raw.ihdr.interlaced); match oxipng::optimize(&InFile::Path(input), &output, &opts) { Ok(_) => (), Err(x) => panic!("{}", x), } let output = output.path().unwrap(); assert!(output.exists()); let png = match PngData::new(output, &opts) { Ok(x) => x, Err(x) => { remove_file(output).ok(); panic!("{}", x) } }; assert_eq!(png.raw.ihdr.color_type.png_header_code(), color_type_out); assert_eq!(png.raw.ihdr.bit_depth, bit_depth_out); remove_file(output).ok(); } #[test] fn rgba_16_should_be_rgba_16() { test_it_converts( "tests/files/rgba_16_should_be_rgba_16.png", false, RGBA, BitDepth::Sixteen, RGBA, BitDepth::Sixteen, ); } #[test] fn rgba_16_should_be_rgba_8() { test_it_converts( "tests/files/rgba_16_should_be_rgba_8.png", false, RGBA, BitDepth::Sixteen, RGBA, BitDepth::Eight, ); } #[test] fn rgba_8_should_be_rgba_8() { test_it_converts( "tests/files/rgba_8_should_be_rgba_8.png", false, RGBA, BitDepth::Eight, RGBA, BitDepth::Eight, ); } #[test] fn rgba_16_should_be_rgb_16() { test_it_converts( "tests/files/rgba_16_should_be_rgb_16.png", false, RGBA, BitDepth::Sixteen, RGB, BitDepth::Sixteen, ); } #[test] fn rgba_16_should_be_rgb_8() { test_it_converts( "tests/files/rgba_16_should_be_rgb_8.png", false, RGBA, BitDepth::Sixteen, RGB, BitDepth::Eight, ); } #[test] fn rgba_8_should_be_rgb_8() { test_it_converts( "tests/files/rgba_8_should_be_rgb_8.png", false, RGBA, BitDepth::Eight, RGB, BitDepth::Eight, ); } #[test] fn rgba_16_should_be_rgb_trns_16() { test_it_converts( "tests/files/rgba_16_should_be_rgb_trns_16.png", true, RGBA, BitDepth::Sixteen, RGB, BitDepth::Sixteen, ); } #[test] fn rgba_8_should_be_rgb_trns_8() { test_it_converts( "tests/files/rgba_8_should_be_rgb_trns_8.png", true, RGBA, BitDepth::Eight, RGB, BitDepth::Eight, ); } #[test] fn rgba_16_should_be_palette_8() { test_it_converts( "tests/files/rgba_16_should_be_palette_8.png", false, RGBA, BitDepth::Sixteen, INDEXED, BitDepth::Eight, ); } #[test] fn rgba_8_should_be_palette_8() { test_it_converts( "tests/files/rgba_8_should_be_palette_8.png", false, RGBA, BitDepth::Eight, INDEXED, BitDepth::Eight, ); } #[test] fn rgba_16_should_be_palette_4() { test_it_converts( "tests/files/rgba_16_should_be_palette_4.png", false, RGBA, BitDepth::Sixteen, INDEXED, BitDepth::Four, ); } #[test] fn rgba_8_should_be_palette_4() { test_it_converts( "tests/files/rgba_8_should_be_palette_4.png", false, RGBA, BitDepth::Eight, INDEXED, BitDepth::Four, ); } #[test] fn rgba_16_should_be_palette_2() { test_it_converts( "tests/files/rgba_16_should_be_palette_2.png", false, RGBA, BitDepth::Sixteen, INDEXED, BitDepth::Two, ); } #[test] fn rgba_8_should_be_palette_2() { test_it_converts( "tests/files/rgba_8_should_be_palette_2.png", false, RGBA, BitDepth::Eight, INDEXED, BitDepth::Two, ); } #[test] fn rgba_16_should_be_palette_1() { test_it_converts( "tests/files/rgba_16_should_be_palette_1.png", false, RGBA, BitDepth::Sixteen, INDEXED, BitDepth::One, ); } #[test] fn rgba_8_should_be_palette_1() { test_it_converts( "tests/files/rgba_8_should_be_palette_1.png", false, RGBA, BitDepth::Eight, INDEXED, BitDepth::One, ); } #[test] fn rgba_16_should_be_grayscale_alpha_16() { test_it_converts( "tests/files/rgba_16_should_be_grayscale_alpha_16.png", false, RGBA, BitDepth::Sixteen, GRAYSCALE_ALPHA, BitDepth::Sixteen, ); } #[test] fn rgba_16_should_be_grayscale_alpha_8() { test_it_converts( "tests/files/rgba_16_should_be_grayscale_alpha_8.png", false, RGBA, BitDepth::Sixteen, GRAYSCALE_ALPHA, BitDepth::Eight, ); } #[test] fn rgba_8_should_be_grayscale_alpha_8() { test_it_converts( "tests/files/rgba_8_should_be_grayscale_alpha_8.png", false, RGBA, BitDepth::Eight, GRAYSCALE_ALPHA, BitDepth::Eight, ); } #[test] fn rgba_16_should_be_grayscale_16() { test_it_converts( "tests/files/rgba_16_should_be_grayscale_16.png", false, RGBA, BitDepth::Sixteen, GRAYSCALE, BitDepth::Sixteen, ); } #[test] fn rgba_16_should_be_grayscale_8() { test_it_converts( "tests/files/rgba_16_should_be_grayscale_8.png", false, RGBA, BitDepth::Sixteen, GRAYSCALE, BitDepth::Eight, ); } #[test] fn rgba_8_should_be_grayscale_8() { test_it_converts( "tests/files/rgba_8_should_be_grayscale_8.png", false, RGBA, BitDepth::Eight, GRAYSCALE, BitDepth::Eight, ); } #[test] fn rgb_16_should_be_rgb_16() { test_it_converts( "tests/files/rgb_16_should_be_rgb_16.png", false, RGB, BitDepth::Sixteen, RGB, BitDepth::Sixteen, ); } #[test] fn rgb_16_should_be_rgb_8() { test_it_converts( "tests/files/rgb_16_should_be_rgb_8.png", false, RGB, BitDepth::Sixteen, RGB, BitDepth::Eight, ); } #[test] fn rgb_8_should_be_rgb_8() { test_it_converts( "tests/files/rgb_8_should_be_rgb_8.png", false, RGB, BitDepth::Eight, RGB, BitDepth::Eight, ); } #[test] fn rgb_16_should_be_palette_8() { test_it_converts( "tests/files/rgb_16_should_be_palette_8.png", false, RGB, BitDepth::Sixteen, INDEXED, BitDepth::Eight, ); } #[test] fn rgb_8_should_be_palette_8() { test_it_converts( "tests/files/rgb_8_should_be_palette_8.png", false, RGB, BitDepth::Eight, INDEXED, BitDepth::Eight, ); } #[test] fn rgb_trns_8_should_be_palette_8() { test_it_converts( "tests/files/rgb_trns_8_should_be_palette_8.png", false, RGB, BitDepth::Eight, INDEXED, BitDepth::Eight, ); } #[test] fn rgb_16_should_be_palette_4() { test_it_converts( "tests/files/rgb_16_should_be_palette_4.png", false, RGB, BitDepth::Sixteen, INDEXED, BitDepth::Four, ); } #[test] fn rgb_8_should_be_palette_4() { test_it_converts( "tests/files/rgb_8_should_be_palette_4.png", false, RGB, BitDepth::Eight, INDEXED, BitDepth::Four, ); } #[test] fn rgb_16_should_be_palette_2() { test_it_converts( "tests/files/rgb_16_should_be_palette_2.png", false, RGB, BitDepth::Sixteen, INDEXED, BitDepth::Two, ); } #[test] fn rgb_8_should_be_palette_2() { test_it_converts( "tests/files/rgb_8_should_be_palette_2.png", false, RGB, BitDepth::Eight, INDEXED, BitDepth::Two, ); } #[test] fn rgb_16_should_be_palette_1() { test_it_converts( "tests/files/rgb_16_should_be_palette_1.png", false, RGB, BitDepth::Sixteen, INDEXED, BitDepth::One, ); } #[test] fn rgb_8_should_be_palette_1() { test_it_converts( "tests/files/rgb_8_should_be_palette_1.png", false, RGB, BitDepth::Eight, INDEXED, BitDepth::One, ); } #[test] fn rgb_16_should_be_grayscale_16() { test_it_converts( "tests/files/rgb_16_should_be_grayscale_16.png", false, RGB, BitDepth::Sixteen, GRAYSCALE, BitDepth::Sixteen, ); } #[test] fn rgb_16_should_be_grayscale_8() { test_it_converts( "tests/files/rgb_16_should_be_grayscale_8.png", false, RGB, BitDepth::Sixteen, GRAYSCALE, BitDepth::Eight, ); } #[test] fn rgb_8_should_be_grayscale_8() { test_it_converts( "tests/files/rgb_8_should_be_grayscale_8.png", false, RGB, BitDepth::Eight, GRAYSCALE, BitDepth::Eight, ); } #[test] fn palette_8_should_be_palette_8() { test_it_converts( "tests/files/palette_8_should_be_palette_8.png", false, INDEXED, BitDepth::Eight, INDEXED, BitDepth::Eight, ); } #[test] fn palette_8_should_be_palette_4() { test_it_converts( "tests/files/palette_8_should_be_palette_4.png", false, INDEXED, BitDepth::Eight, INDEXED, BitDepth::Four, ); } #[test] fn palette_4_should_be_palette_4() { test_it_converts( "tests/files/palette_4_should_be_palette_4.png", false, INDEXED, BitDepth::Four, INDEXED, BitDepth::Four, ); } #[test] fn palette_8_should_be_palette_2() { test_it_converts( "tests/files/palette_8_should_be_palette_2.png", false, INDEXED, BitDepth::Eight, INDEXED, BitDepth::Two, ); } #[test] fn palette_4_should_be_palette_2() { test_it_converts( "tests/files/palette_4_should_be_palette_2.png", false, INDEXED, BitDepth::Four, INDEXED, BitDepth::Two, ); } #[test] fn palette_8_should_be_grayscale_8() { test_it_converts( "tests/files/palette_8_should_be_grayscale_8.png", false, INDEXED, BitDepth::Eight, GRAYSCALE, BitDepth::Eight, ); } #[test] fn palette_2_should_be_grayscale_alpha_8() { test_it_converts( "tests/files/palette_2_should_be_grayscale_alpha_8.png", true, INDEXED, BitDepth::Two, GRAYSCALE_ALPHA, BitDepth::Eight, ); } #[test] fn palette_8_should_be_rgb() { test_it_converts( "tests/files/palette_8_should_be_rgb.png", false, INDEXED, BitDepth::Eight, RGB, BitDepth::Eight, ); } #[test] fn palette_8_should_be_rgba() { test_it_converts( "tests/files/palette_8_should_be_rgba.png", false, INDEXED, BitDepth::Eight, RGBA, BitDepth::Eight, ); } #[test] fn palette_2_should_be_palette_2() { test_it_converts( "tests/files/palette_2_should_be_palette_2.png", false, INDEXED, BitDepth::Two, INDEXED, BitDepth::Two, ); } #[test] fn palette_8_should_be_palette_1() { test_it_converts( "tests/files/palette_8_should_be_palette_1.png", false, INDEXED, BitDepth::Eight, INDEXED, BitDepth::One, ); } #[test] fn palette_4_should_be_palette_1() { test_it_converts( "tests/files/palette_4_should_be_palette_1.png", false, INDEXED, BitDepth::Four, INDEXED, BitDepth::One, ); } #[test] fn palette_2_should_be_palette_1() { test_it_converts( "tests/files/palette_2_should_be_palette_1.png", false, INDEXED, BitDepth::Two, INDEXED, BitDepth::One, ); } #[test] fn palette_1_should_be_palette_1() { test_it_converts( "tests/files/palette_1_should_be_palette_1.png", false, INDEXED, BitDepth::One, INDEXED, BitDepth::One, ); } #[test] fn grayscale_alpha_16_should_be_grayscale_alpha_16() { test_it_converts( "tests/files/grayscale_alpha_16_should_be_grayscale_alpha_16.png", false, GRAYSCALE_ALPHA, BitDepth::Sixteen, GRAYSCALE_ALPHA, BitDepth::Sixteen, ); } #[test] fn grayscale_alpha_16_should_be_grayscale_alpha_8() { test_it_converts( "tests/files/grayscale_alpha_16_should_be_grayscale_alpha_8.png", false, GRAYSCALE_ALPHA, BitDepth::Sixteen, GRAYSCALE_ALPHA, BitDepth::Eight, ); } #[test] fn grayscale_alpha_8_should_be_grayscale_alpha_8() { test_it_converts( "tests/files/grayscale_alpha_8_should_be_grayscale_alpha_8.png", false, GRAYSCALE_ALPHA, BitDepth::Eight, GRAYSCALE_ALPHA, BitDepth::Eight, ); } #[test] fn grayscale_alpha_16_should_be_grayscale_16() { test_it_converts( "tests/files/grayscale_alpha_16_should_be_grayscale_16.png", false, GRAYSCALE_ALPHA, BitDepth::Sixteen, GRAYSCALE, BitDepth::Sixteen, ); } #[test] fn grayscale_alpha_16_should_be_grayscale_8() { test_it_converts( "tests/files/grayscale_alpha_16_should_be_grayscale_8.png", false, GRAYSCALE_ALPHA, BitDepth::Sixteen, GRAYSCALE, BitDepth::Eight, ); } #[test] fn grayscale_alpha_8_should_be_grayscale_8() { test_it_converts( "tests/files/grayscale_alpha_8_should_be_grayscale_8.png", false, GRAYSCALE_ALPHA, BitDepth::Eight, GRAYSCALE, BitDepth::Eight, ); } #[test] fn grayscale_alpha_8_should_be_palette_8() { test_it_converts( "tests/files/grayscale_alpha_8_should_be_palette_8.png", false, GRAYSCALE_ALPHA, BitDepth::Eight, INDEXED, BitDepth::Eight, ); } #[test] fn grayscale_16_should_be_grayscale_16() { test_it_converts( "tests/files/grayscale_16_should_be_grayscale_16.png", false, GRAYSCALE, BitDepth::Sixteen, GRAYSCALE, BitDepth::Sixteen, ); } #[test] fn grayscale_16_should_be_grayscale_8() { test_it_converts( "tests/files/grayscale_16_should_be_grayscale_8.png", false, GRAYSCALE, BitDepth::Sixteen, GRAYSCALE, BitDepth::Eight, ); } #[test] fn grayscale_16_should_be_grayscale_1() { test_it_converts( "tests/files/grayscale_16_should_be_grayscale_1.png", false, GRAYSCALE, BitDepth::Sixteen, GRAYSCALE, BitDepth::One, ); } #[test] fn grayscale_8_should_be_grayscale_8() { test_it_converts( "tests/files/grayscale_8_should_be_grayscale_8.png", false, GRAYSCALE, BitDepth::Eight, GRAYSCALE, BitDepth::Eight, ); } #[test] fn grayscale_8_should_be_grayscale_4() { test_it_converts( "tests/files/grayscale_8_should_be_grayscale_4.png", false, GRAYSCALE, BitDepth::Eight, GRAYSCALE, BitDepth::Four, ); } #[test] fn grayscale_8_should_be_grayscale_2() { test_it_converts( "tests/files/grayscale_8_should_be_grayscale_2.png", false, GRAYSCALE, BitDepth::Eight, GRAYSCALE, BitDepth::Two, ); } #[test] fn grayscale_4_should_be_grayscale_2() { test_it_converts( "tests/files/grayscale_4_should_be_grayscale_2.png", false, GRAYSCALE, BitDepth::Four, GRAYSCALE, BitDepth::Two, ); } #[test] fn grayscale_8_should_be_grayscale_1() { test_it_converts( "tests/files/grayscale_8_should_be_grayscale_1.png", false, GRAYSCALE, BitDepth::Eight, GRAYSCALE, BitDepth::One, ); } #[test] fn grayscale_4_should_be_grayscale_1() { test_it_converts( "tests/files/grayscale_4_should_be_grayscale_1.png", false, GRAYSCALE, BitDepth::Four, GRAYSCALE, BitDepth::One, ); } #[test] fn grayscale_2_should_be_grayscale_1() { test_it_converts( "tests/files/grayscale_2_should_be_grayscale_1.png", false, GRAYSCALE, BitDepth::Two, GRAYSCALE, BitDepth::One, ); } #[test] fn grayscale_8_should_be_palette_8() { test_it_converts( "tests/files/grayscale_8_should_be_palette_8.png", false, GRAYSCALE, BitDepth::Eight, INDEXED, BitDepth::Eight, ); } #[test] fn grayscale_8_should_be_palette_4() { test_it_converts( "tests/files/grayscale_8_should_be_palette_4.png", false, GRAYSCALE, BitDepth::Eight, INDEXED, BitDepth::Four, ); } #[test] fn grayscale_8_should_be_palette_2() { test_it_converts( "tests/files/grayscale_8_should_be_palette_2.png", false, GRAYSCALE, BitDepth::Eight, INDEXED, BitDepth::Two, ); } #[test] fn grayscale_8_should_be_palette_1() { test_it_converts( "tests/files/grayscale_8_should_be_palette_1.png", false, GRAYSCALE, BitDepth::Eight, INDEXED, BitDepth::One, ); } #[test] fn grayscale_alpha_16_should_be_grayscale_trns_16() { test_it_converts( "tests/files/grayscale_alpha_16_should_be_grayscale_trns_16.png", true, GRAYSCALE_ALPHA, BitDepth::Sixteen, GRAYSCALE, BitDepth::Sixteen, ); } #[test] fn grayscale_alpha_8_should_be_grayscale_trns_8() { test_it_converts( "tests/files/grayscale_alpha_8_should_be_grayscale_trns_8.png", true, GRAYSCALE_ALPHA, BitDepth::Eight, GRAYSCALE, BitDepth::Eight, ); } #[test] fn grayscale_alpha_8_should_be_grayscale_trns_1() { test_it_converts( "tests/files/grayscale_alpha_8_should_be_grayscale_trns_1.png", true, GRAYSCALE_ALPHA, BitDepth::Eight, GRAYSCALE, BitDepth::One, ); } #[test] fn grayscale_trns_8_should_be_grayscale_1() { test_it_converts( "tests/files/grayscale_trns_8_should_be_grayscale_1.png", true, GRAYSCALE, BitDepth::Eight, GRAYSCALE, BitDepth::One, ); } #[test] fn small_files() { test_it_converts( "tests/files/small_files.png", false, INDEXED, BitDepth::Eight, RGB, BitDepth::Eight, ); } #[test] fn palette_should_be_reduced_with_dupes() { let input = PathBuf::from("tests/files/palette_should_be_reduced_with_dupes.png"); let (output, opts) = get_opts(&input); let png = PngData::new(&input, &opts).unwrap(); assert_eq!(png.raw.ihdr.color_type.png_header_code(), INDEXED); assert_eq!(png.raw.ihdr.bit_depth, BitDepth::Eight); if let ColorType::Indexed { palette } = &png.raw.ihdr.color_type { assert_eq!(palette.len(), 43); } match oxipng::optimize(&InFile::Path(input), &output, &opts) { Ok(_) => (), Err(x) => panic!("{}", x), } let output = output.path().unwrap(); assert!(output.exists()); let png = match PngData::new(output, &opts) { Ok(x) => x, Err(x) => { remove_file(output).ok(); panic!("{}", x) } }; assert_eq!(png.raw.ihdr.color_type.png_header_code(), INDEXED); assert_eq!(png.raw.ihdr.bit_depth, BitDepth::Eight); if let ColorType::Indexed { palette } = &png.raw.ihdr.color_type { assert_eq!(palette.len(), 35); } remove_file(output).ok(); } #[test] fn palette_should_be_reduced_with_unused() { let input = PathBuf::from("tests/files/palette_should_be_reduced_with_unused.png"); let (output, opts) = get_opts(&input); let png = PngData::new(&input, &opts).unwrap(); assert_eq!(png.raw.ihdr.color_type.png_header_code(), INDEXED); assert_eq!(png.raw.ihdr.bit_depth, BitDepth::Eight); if let ColorType::Indexed { palette } = &png.raw.ihdr.color_type { assert_eq!(palette.len(), 35); } match oxipng::optimize(&InFile::Path(input), &output, &opts) { Ok(_) => (), Err(x) => panic!("{}", x), } let output = output.path().unwrap(); assert!(output.exists()); let png = match PngData::new(output, &opts) { Ok(x) => x, Err(x) => { remove_file(output).ok(); panic!("{}", x) } }; assert_eq!(png.raw.ihdr.color_type.png_header_code(), INDEXED); assert_eq!(png.raw.ihdr.bit_depth, BitDepth::Eight); if let ColorType::Indexed { palette } = &png.raw.ihdr.color_type { assert_eq!(palette.len(), 33); } remove_file(output).ok(); } #[test] fn palette_should_be_reduced_with_bkgd() { let input = PathBuf::from("tests/files/palette_should_be_reduced_with_bkgd.png"); let (output, opts) = get_opts(&input); let png = PngData::new(&input, &opts).unwrap(); assert_eq!(png.raw.ihdr.color_type.png_header_code(), INDEXED); assert_eq!(png.raw.ihdr.bit_depth, BitDepth::One); assert_eq!(&png.aux_chunks[0].name, b"bKGD"); if let ColorType::Indexed { palette } = &png.raw.ihdr.color_type { assert_eq!(palette.len(), 3); } match oxipng::optimize(&InFile::Path(input), &output, &opts) { Ok(_) => (), Err(x) => panic!("{}", x), } let output = output.path().unwrap(); assert!(output.exists()); let png = match PngData::new(output, &opts) { Ok(x) => x, Err(x) => { remove_file(output).ok(); panic!("{}", x) } }; assert_eq!(png.raw.ihdr.color_type.png_header_code(), INDEXED); assert_eq!(png.raw.ihdr.bit_depth, BitDepth::One); assert_ne!(&png.aux_chunks[0].name, b"bKGD"); if let ColorType::Indexed { palette } = &png.raw.ihdr.color_type { assert_eq!(palette.len(), 2); } remove_file(output).ok(); } #[test] fn palette_should_be_reduced_with_both() { let input = PathBuf::from("tests/files/palette_should_be_reduced_with_both.png"); let (output, opts) = get_opts(&input); let png = PngData::new(&input, &opts).unwrap(); assert_eq!(png.raw.ihdr.color_type.png_header_code(), INDEXED); assert_eq!(png.raw.ihdr.bit_depth, BitDepth::Eight); if let ColorType::Indexed { palette } = &png.raw.ihdr.color_type { assert_eq!(palette.len(), 43); } match oxipng::optimize(&InFile::Path(input), &output, &opts) { Ok(_) => (), Err(x) => panic!("{}", x), } let output = output.path().unwrap(); assert!(output.exists()); let png = match PngData::new(output, &opts) { Ok(x) => x, Err(x) => { remove_file(output).ok(); panic!("{}", x) } }; assert_eq!(png.raw.ihdr.color_type.png_header_code(), INDEXED); assert_eq!(png.raw.ihdr.bit_depth, BitDepth::Eight); if let ColorType::Indexed { palette } = &png.raw.ihdr.color_type { assert_eq!(palette.len(), 33); } remove_file(output).ok(); } #[test] fn palette_should_be_reduced_with_missing() { let input = PathBuf::from("tests/files/palette_should_be_reduced_with_missing.png"); let (output, opts) = get_opts(&input); let png = PngData::new(&input, &opts).unwrap(); assert_eq!(png.raw.ihdr.color_type.png_header_code(), INDEXED); assert_eq!(png.raw.ihdr.bit_depth, BitDepth::Eight); if let ColorType::Indexed { palette } = &png.raw.ihdr.color_type { assert_eq!(palette.len(), 2); } match oxipng::optimize(&InFile::Path(input), &output, &opts) { Ok(_) => (), Err(x) => panic!("{}", x), } let output = output.path().unwrap(); assert!(output.exists()); let png = match PngData::new(output, &opts) { Ok(x) => x, Err(x) => { remove_file(output).ok(); panic!("{}", x) } }; assert_eq!(png.raw.ihdr.color_type.png_header_code(), INDEXED); assert_eq!(png.raw.ihdr.bit_depth, BitDepth::Two); if let ColorType::Indexed { palette } = &png.raw.ihdr.color_type { assert_eq!(palette.len(), 3); } remove_file(output).ok(); } #[test] fn rgba_16_reduce_alpha() { test_it_converts( "tests/files/rgba_16_reduce_alpha.png", true, RGBA, BitDepth::Sixteen, RGBA, BitDepth::Eight, ); } #[test] fn rgba_8_reduce_alpha() { test_it_converts( "tests/files/rgba_8_reduce_alpha.png", true, RGBA, BitDepth::Eight, RGBA, BitDepth::Eight, ); } #[test] fn grayscale_alpha_16_reduce_alpha() { test_it_converts( "tests/files/grayscale_alpha_16_reduce_alpha.png", true, GRAYSCALE_ALPHA, BitDepth::Sixteen, GRAYSCALE_ALPHA, BitDepth::Eight, ); } #[test] fn grayscale_alpha_8_reduce_alpha() { test_it_converts( "tests/files/grayscale_alpha_8_reduce_alpha.png", true, GRAYSCALE_ALPHA, BitDepth::Eight, GRAYSCALE_ALPHA, BitDepth::Eight, ); }