added packaging / bundling

crates/bds-ui/tests/packaging_assets.rs

@@ -0,0 +1,41 @@
+use std::{fs, path::Path};
+
+const CRATE_DIR: &str = env!("CARGO_MANIFEST_DIR");
+
+#[test]
+fn desktop_packages_have_native_icons_and_cargo_commands() {
+    let assets = Path::new(CRATE_DIR).join("assets/app-icons");
+    let png = fs::read(assets.join("bds.png")).expect("Linux PNG icon");
+    let ico = fs::read(assets.join("bds.ico")).expect("Windows ICO icon");
+    let icns = fs::read(assets.join("bds.icns")).expect("macOS ICNS icon");
+
+    assert_eq!(&png[..8], b"\x89PNG\r\n\x1a\n");
+    assert_eq!(u32::from_be_bytes(png[16..20].try_into().unwrap()), 1024);
+    assert_eq!(u32::from_be_bytes(png[20..24].try_into().unwrap()), 1024);
+    assert_eq!(&ico[..4], &[0, 0, 1, 0]);
+    assert!(u16::from_le_bytes(ico[4..6].try_into().unwrap()) >= 6);
+    assert_eq!(&icns[..4], b"icns");
+
+    let manifest = fs::read_to_string(Path::new(CRATE_DIR).join("Cargo.toml")).unwrap();
+    for required in [
+        "[package.metadata.packager]",
+        "assets/app-icons/bds.png",
+        "assets/app-icons/bds.ico",
+        "assets/app-icons/bds.icns",
+        "signing-identity = \"-\"",
+    ] {
+        assert!(manifest.contains(required), "missing {required}");
+    }
+
+    let cargo_config = fs::read_to_string(Path::new(CRATE_DIR).join("../../.cargo/config.toml"))
+        .expect("Cargo packaging aliases");
+    for alias in ["bundle-macos", "bundle-windows", "bundle-linux"] {
+        assert!(cargo_config.contains(alias), "missing cargo {alias}");
+    }
+
+    let main = fs::read_to_string(Path::new(CRATE_DIR).join("src/main.rs")).unwrap();
+    assert!(main.contains("assets/app-icons/bds.png"));
+
+    let build = fs::read_to_string(Path::new(CRATE_DIR).join("build.rs")).unwrap();
+    assert!(build.contains("set_icon(\"assets/app-icons/bds.ico\")"));
+}