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extern crate base64;
extern crate image;
extern crate wu_diff;
#[cfg(test)]
mod tests {
use base64::engine::general_purpose::STANDARD;
use base64::engine::Engine;
use image::*;
use wu_diff::*;
#[test]
fn image_diff_test() {
let before = image::open("./tests/images/before.png").unwrap();
let after = image::open("./tests/images/after.png").unwrap();
let diff = diff(&create_encoded_rows(&before), &create_encoded_rows(&after));
let mut added_indexes: Vec<usize> = Vec::new();
let mut removed_indexes: Vec<usize> = Vec::new();
for d in diff.iter() {
match d {
DiffResult::Added(a) => added_indexes.push(a.new_index.unwrap()),
DiffResult::Removed(r) => removed_indexes.push(r.old_index.unwrap()),
_ => (),
}
}
assert_eq!(
added_indexes,
vec![
74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 282, 283, 284, 285, 286, 287,
288, 289, 290, 291, 292, 293, 294, 295, 296, 297, 298, 299, 300, 301, 302, 303,
304, 305, 306, 307, 308, 309, 310, 311, 312, 313, 314, 315, 316, 317, 318, 319,
320, 321, 322, 323, 324, 325, 326, 327, 328, 329, 510, 511,
]
)
}
fn create_encoded_rows(image: &DynamicImage) -> Vec<String> {
image
.as_bytes()
.to_vec()
.chunks(image.dimensions().0 as usize * 4)
.map(|chunk| STANDARD.encode(chunk))
.collect()
}
}
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