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Add roundtrip tests

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Birk Tjelmeland committed 2019-02-09 20:58:28 +01:00
1 parent fa540dbad6
commit 9ca445a5eb
1 file changed
+91 -20
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tests/encode_images.rs
+91 -20
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@@ -46,51 +46,122 @@ fn test_gray_u8_roundtrip()
let img_file = File::open("./tests/images/minisblack-1c-8b.tiff").expect("Cannot find test image!");
let mut decoder = Decoder::new(img_file).expect("Cannot create decoder");
assert_eq!(decoder.colortype().unwrap(), ColorType::Gray(8));
let img_res = decoder.read_image();
assert!(img_res.is_ok());
let image_data = match decoder.read_image().unwrap() {
DecodingResult::U8(res) => res,
_ => panic!("Wrong data type"),
};
let mut file = tempfile::tempfile().unwrap();
{
let mut tiff = TiffEncoder::new(&mut file).unwrap();
let (width, height) = decoder.dimensions().unwrap();
tiff.write_image::<colortype::Grey8>(width, height, &image_data).unwrap();
}
file.seek(SeekFrom::Start(0)).unwrap();
{
let mut decoder = Decoder::new(&mut file).unwrap();
if let DecodingResult::U8(img_res) = decoder.read_image().unwrap() {
assert_eq!(image_data, img_res);
}
else {
panic!("Wrong data type");
}
}
}
#[test]
fn test_rgb_u8()
fn test_rgb_u8_roundtrip()
{
let img_file = File::open("./tests/images/rgb-3c-8b.tiff").expect("Cannot find test image!");
let mut decoder = Decoder::new(img_file).expect("Cannot create decoder");
assert_eq!(decoder.colortype().unwrap(), ColorType::RGB(8));
let img_res = decoder.read_image();
let image_data = match decoder.read_image().unwrap() {
DecodingResult::U8(res) => res,
_ => panic!("Wrong data type"),
};
let mut file = tempfile::tempfile().unwrap();
let mut tiff = TiffEncoder::new(&mut file).unwrap();
tiff.write_image::<colortype::RGB8>(100, 100, &image_data).unwrap();
file.seek(SeekFrom::Start(0)).unwrap();
let mut decoder = Decoder::new(&mut file).unwrap();
assert_eq!(decoder.colortype().unwrap(), ColorType::RGB(8));
assert_eq!(decoder.dimensions().unwrap(), (100, 100));
if let DecodingResult::U8(img_res) = decoder.read_image().unwrap() {
assert_eq!(image_data, img_res);
{
let mut tiff = TiffEncoder::new(&mut file).unwrap();
let (width, height) = decoder.dimensions().unwrap();
tiff.write_image::<colortype::RGB8>(width, height, &image_data).unwrap();
}
else {
panic!("Wrong data type");
file.seek(SeekFrom::Start(0)).unwrap();
{
let mut decoder = Decoder::new(&mut file).unwrap();
if let DecodingResult::U8(img_res) = decoder.read_image().unwrap() {
assert_eq!(image_data, img_res);
}
else {
panic!("Wrong data type");
}
}
}
#[test]
fn test_gray_u16()
fn test_gray_u16_roundtrip()
{
let img_file = File::open("./tests/images/minisblack-1c-16b.tiff").expect("Cannot find test image!");
let mut decoder = Decoder::new(img_file).expect("Cannot create decoder");
assert_eq!(decoder.colortype().unwrap(), ColorType::Gray(16));
let img_res = decoder.read_image();
assert!(img_res.is_ok());
let image_data = match decoder.read_image().unwrap() {
DecodingResult::U16(res) => res,
_ => panic!("Wrong data type"),
};
let mut file = tempfile::tempfile().unwrap();
{
let mut tiff = TiffEncoder::new(&mut file).unwrap();
let (width, height) = decoder.dimensions().unwrap();
tiff.write_image::<colortype::Grey16>(width, height, &image_data).unwrap();
}
file.seek(SeekFrom::Start(0)).unwrap();
{
let mut decoder = Decoder::new(&mut file).unwrap();
if let DecodingResult::U16(img_res) = decoder.read_image().unwrap() {
assert_eq!(image_data, img_res);
}
else {
panic!("Wrong data type");
}
}
}
#[test]
fn test_rgb_u16()
fn test_rgb_u16_roundtrip()
{
let img_file = File::open("./tests/images/rgb-3c-16b.tiff").expect("Cannot find test image!");
let mut decoder = Decoder::new(img_file).expect("Cannot create decoder");
assert_eq!(decoder.colortype().unwrap(), ColorType::RGB(16));
let img_res = decoder.read_image();
assert!(img_res.is_ok());
let image_data = match decoder.read_image().unwrap() {
DecodingResult::U16(res) => res,
_ => panic!("Wrong data type"),
};
let mut file = tempfile::tempfile().unwrap();
{
let mut tiff = TiffEncoder::new(&mut file).unwrap();
let (width, height) = decoder.dimensions().unwrap();
tiff.write_image::<colortype::RGB16>(width, height, &image_data).unwrap();
}
file.seek(SeekFrom::Start(0)).unwrap();
{
let mut decoder = Decoder::new(&mut file).unwrap();
if let DecodingResult::U16(img_res) = decoder.read_image().unwrap() {
assert_eq!(image_data, img_res);
}
else {
panic!("Wrong data type");
}
}
}