use std::env; use std::fs; use std::path::{PathBuf, Path}; use std::ops::Deref; use tempfile::TempDir; use id3_image::*; struct Fixture { path: PathBuf, source: PathBuf, _tempdir: TempDir, } impl Fixture { fn blank(fixture_filename: &str) -> Self { let root_dir = &env::var("CARGO_MANIFEST_DIR").expect("$CARGO_MANIFEST_DIR"); let mut source = PathBuf::from(root_dir); source.push("tests/fixtures"); source.push(&fixture_filename); let tempdir = tempfile::tempdir().unwrap(); let mut path = PathBuf::from(&tempdir.path()); path.push(&fixture_filename); Fixture { _tempdir: tempdir, source, path } } fn copy(fixture_filename: &str) -> Self { let fixture = Fixture::blank(fixture_filename); fs::copy(&fixture.source, &fixture.path).unwrap(); fixture } } impl Deref for Fixture { type Target = Path; fn deref(&self) -> &Self::Target { self.path.deref() } } fn read_tag(path: &Path) -> id3::Tag { id3::Tag::read_from_path(path).unwrap() } #[test] fn test_unsuccessful_image_embedding() { let song = Fixture::copy("attempt_1_no_image.mp3"); let image = Fixture::copy("attempt_1.jpg"); // Nonexistent files assert!(embed_image(&song, &PathBuf::from("nonexistent.jpg")).is_err()); assert!(embed_image(&PathBuf::from("nonexistent.mp3"), &image).is_err()); assert!(embed_image(&PathBuf::from("nonexistent.mp3"), &PathBuf::from("nonexistent.jpg")).is_err()); // Wrong kinds of files assert!(embed_image(&image, &song).is_err()); assert!(embed_image(&song, &song).is_err()); assert!(embed_image(&image, &image).is_err()); } #[test] fn test_successful_jpeg_image_embedding() { let song = Fixture::copy("attempt_1_no_image.mp3"); let image = Fixture::copy("attempt_1.jpg"); let tag = read_tag(&song); assert!(tag.pictures().count() == 0); embed_image(&song, &image).unwrap(); let tag = read_tag(&song); assert!(tag.pictures().count() > 0); } #[test] fn test_successful_png_image_embedding() { let song = Fixture::copy("attempt_1_no_image.mp3"); let image = Fixture::copy("attempt_1.png"); let tag = read_tag(&song); assert!(tag.pictures().count() == 0); embed_image(&song, &image).unwrap(); let tag = read_tag(&song); assert!(tag.pictures().count() > 0); } #[test] fn test_successful_image_embedding_in_a_file_that_already_has_an_image() { let song = Fixture::copy("attempt_1.mp3"); let image = Fixture::copy("attempt_1.jpg"); let tag = read_tag(&song); assert!(tag.pictures().count() > 0); embed_image(&song, &image).unwrap(); let tag = read_tag(&song); assert!(tag.pictures().count() > 0); } #[test] fn test_removing_and_adding_an_image() { let song = Fixture::copy("attempt_1.mp3"); let image = Fixture::copy("attempt_1.jpg"); let tag = read_tag(&song); assert!(tag.pictures().count() > 0); remove_images(&song).unwrap(); let tag = read_tag(&song); assert!(tag.pictures().count() == 0); embed_image(&song, &image).unwrap(); let tag = read_tag(&song); assert!(tag.pictures().count() > 0); } #[test] fn test_extracting_a_jpg_image() { let song = Fixture::copy("attempt_1.mp3"); let image = Fixture::blank("attempt_1.jpg"); let tag = read_tag(&song); assert!(tag.pictures().count() > 0); assert!(!image.exists()); extract_first_image(&song, &image).unwrap(); assert!(image.exists()); } #[test] fn test_extracting_a_png_image() { let song = Fixture::copy("attempt_1.mp3"); let image = Fixture::blank("attempt_1.png"); let tag = read_tag(&song); assert!(tag.pictures().count() > 0); assert!(!image.exists()); extract_first_image(&song, &image).unwrap(); assert!(image.exists()); } #[test] fn test_overwriting_an_existing_image() { let song = Fixture::copy("attempt_1.mp3"); let image = Fixture::copy("attempt_1.jpg"); let tag = read_tag(&song); assert!(tag.pictures().count() > 0); assert!(image.exists()); extract_first_image(&song, &image).unwrap(); assert!(image.exists()); }