baby's first unit tests

.gitignore

@@ -1 +1,2 @@
 /target
+/tests_tmp

Cargo.toml

@@ -37,6 +37,10 @@ runas = "1.2.0"
 winresource = "0.1.17"
 static_vcruntime = "2.0"
 
+[dev-dependencies]
+strip-ansi-escapes = "0.2.0"
+serial_test = "3.1.1"
+
 [package.metadata.winresource]
 OriginalFilename = "alterware-launcher.exe"
 FileDescription = "AlterWare Launcher"

src/main.rs

@@ -7,6 +7,9 @@ mod misc;
 mod self_update;
 mod structs;
 
+#[cfg(test)]
+mod tests;
+
 use global::*;
 use structs::*;
 

src/misc.rs

@@ -43,12 +43,12 @@ pub fn fatal_error(error: &str) {
 pub fn human_readable_bytes(bytes: u64) -> String {
     let mut bytes = bytes as f64;
     let mut i = 0;
-    let units = ["B", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"];
-    while bytes > 1024.0 {
+    const UNITS: [&str; 9] = ["B", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"];
+    while bytes >= 1024.0 {
         bytes /= 1024.0;
         i += 1;
     }
-    format!("{bytes:.2}{}", units[i])
+    format!("{bytes:.2}{}", UNITS[i])
 }
 
 pub fn pb_style_download(pb: &ProgressBar, state: bool) {

src/structs.rs

@@ -32,7 +32,7 @@ impl<'a> Game<'a> {
     }
 }
 
-#[derive(serde::Deserialize, serde::Serialize)]
+#[derive(serde::Deserialize, serde::Serialize, PartialEq, Debug, Clone)]
 pub struct Config {
     pub update_only: bool,
     pub skip_self_update: bool,
@@ -75,7 +75,7 @@ impl PrintPrefix {
     }
 }
 
-#[derive(serde::Deserialize, serde::Serialize, Default)]
+#[derive(serde::Deserialize, serde::Serialize, Default, PartialEq, Debug, Clone)]
 pub struct Cache {
     pub iw4x_revision: String,
     pub hashes: HashMap<String, String>,

src/tests.rs

@@ -0,0 +1,114 @@
+mod config {
+    use crate::{config, fs, structs};
+    use serial_test::serial;
+    use std::path::Path;
+
+    fn setup_test_path() -> std::path::PathBuf {
+        let path = Path::new("tests_tmp").join("config.json");
+        if path.exists() {
+            fs::remove_file(&path).unwrap();
+        }
+        path
+    }
+
+    #[test]
+    #[serial]
+    fn load_config() {
+        let path = setup_test_path();
+
+        let config = config::load(path.clone());
+        assert_eq!(config, structs::Config::default());
+
+        fs::remove_file(path).unwrap();
+    }
+
+    #[test]
+    #[serial]
+    fn save_and_load_config() {
+        let path = setup_test_path();
+
+        let config = structs::Config::default();
+        config::save(path.clone(), config.clone());
+        let loaded_config = config::load(path.clone());
+        assert_eq!(loaded_config, config);
+
+        fs::remove_file(path).unwrap();
+    }
+
+    #[test]
+    #[serial]
+    fn save_value() {
+        let path = setup_test_path();
+
+        config::save_value(path.clone(), "update_only", true);
+        let loaded_config = config::load(path.clone());
+        assert_eq!(loaded_config.update_only, true);
+
+        fs::remove_file(path).unwrap();
+    }
+}
+
+mod misc {
+    use crate::{fs, misc, structs};
+    use std::{fs::File, io::Write, path::Path};
+
+    #[test]
+    fn file_blake3() {
+        let path = Path::new("tests_tmp").join("blake3");
+        if path.exists() {
+            fs::remove_file(&path).unwrap();
+        }
+        fs::create_dir_all(path.parent().unwrap()).unwrap();
+
+        File::create(&path)
+            .unwrap()
+            .write_all(b"alterware")
+            .unwrap();
+        let blake3 = misc::file_blake3(&path).unwrap();
+        assert_eq!(
+            blake3,
+            "f18a70588a620f3a874120dbc2a41f49a0f44349c8a9c10c51f2f1c7bb678daa"
+        );
+
+        fs::remove_file(path).unwrap();
+    }
+
+    #[test]
+    fn human_readable_bytes() {
+        assert_eq!(misc::human_readable_bytes(0), "0.00B");
+        assert_eq!(misc::human_readable_bytes(1023), "1023.00B");
+        assert_eq!(misc::human_readable_bytes(1024), "1.00KB");
+        assert_eq!(misc::human_readable_bytes(1099511627776), "1.00TB");
+    }
+
+    #[test]
+    #[cfg(unix)]
+    fn is_program_in_path() {
+        assert!(misc::is_program_in_path("ls"));
+        assert!(!misc::is_program_in_path("nonexistent"));
+    }
+
+    #[test]
+    fn cache_operations() {
+        let path = Path::new("tests_tmp");
+        fs::create_dir_all(path).unwrap();
+        let cache_file = path.join("awcache.json");
+
+        // Test initial empty cache
+        let initial_cache = misc::get_cache(path);
+        assert_eq!(initial_cache, structs::Cache::default());
+
+        // Test saving and loading cache
+        let test_cache = structs::Cache {
+            iw4x_revision: "r1234".to_string(),
+            hashes: [("test".to_string(), "hash".to_string())]
+                .into_iter()
+                .collect(),
+        };
+        misc::save_cache(path, test_cache.clone());
+        let loaded_cache = misc::get_cache(path);
+        assert_eq!(loaded_cache, test_cache);
+
+        fs::remove_file(&cache_file).unwrap();
+    }
+}