Files
soulseek-rs-modded/soulseek-rs/src/persist/config.rs
T
Michel de Graaf 460031b532 feat(distributed): serve children in the search tree
The client read the distributed network but never carried it: a peer
dialling with a D connection was logged and dropped, and AcceptChildren
was hardcoded false, so this client took from the tree without ever
relaying a search for anyone else.

With accept_children set, peers hang from us: each is told where our
branch sits when it connects and again when the branch moves, every
search that reaches us is passed down, and a child that goes away loses
its slot. Ten at a time, matching Nicotine+, since each costs a socket
and a copy of the network's whole search stream — which is also why it is
opt-in, through the new accept_children config key (ignored without a
listener, since a child would have nothing to dial).
2026-09-09 16:47:55 +00:00

794 lines
28 KiB
Rust

use color_eyre::Result;
use serde::{Deserialize, Serialize};
use std::path::Path;
/// Optional settings read from `config.toml`. Every field is optional so a
/// partial file (or none at all) is valid; unknown keys are ignored so newer
/// configs still load in older builds.
#[derive(Debug, Default, Clone, PartialEq, Eq, Serialize, Deserialize)]
#[serde(default)]
pub struct FileConfig {
pub username: Option<String>,
pub server: Option<String>,
pub listener_port: Option<u16>,
pub disable_listener: Option<bool>,
/// Serve children in the distributed search network: other peers hang
/// from this client and every search it receives is passed down to them.
/// Off by default — it costs a socket and the network's whole search
/// stream per child, and it needs the listener.
pub accept_children: Option<bool>,
pub download_dir: Option<String>,
/// Single shared folder (also what `--shared-dir` sets). Prefer
/// `shared_dirs` for multiple; both may be combined.
pub shared_dir: Option<String>,
/// Multiple shared folders. An explicitly empty list disables sharing.
pub shared_dirs: Option<Vec<String>>,
pub max_concurrent_downloads: Option<usize>,
pub search_timeout: Option<u64>,
/// Command whose stdout is the password (headless fallback, like mutt's
/// `password_cmd`). Never store the password itself in the file.
pub password_cmd: Option<String>,
/// A daemon to control instead of opening a session of our own —
/// `host:port`, or a Unix socket path. Unset means "use the local one if
/// there is one", which is what a daemon on this machine wants.
pub daemon: Option<String>,
/// The token for a remote daemon. Not a secret about *this* account, and
/// useless without reaching the host, so unlike a password it is
/// reasonable to keep here rather than behind a command.
pub daemon_token: Option<String>,
/// Standing searches the server lets us repeat once per wishlist interval.
/// A TOML array rather than a `config set` key, because a query may itself
/// contain a comma.
pub wishlist: Option<Vec<String>>,
}
impl FileConfig {
/// Every setting `config get`/`set` accepts, in the order `config list`
/// prints them. Keys match the TOML field names exactly, so what a script
/// reads back is what it would have written by hand.
pub const KEYS: &'static [&'static str] = &[
"username",
"server",
"listener_port",
"disable_listener",
"accept_children",
"download_dir",
"shared_dirs",
"max_concurrent_downloads",
"search_timeout",
"password_cmd",
"daemon",
"daemon_token",
];
/// The value of `key`, or `None` when it is unset or unknown. Lists are
/// rendered comma-separated, matching what [`Self::set`] accepts.
#[must_use]
pub fn get(&self, key: &str) -> Option<String> {
match key {
"username" => self.username.clone(),
"server" => self.server.clone(),
"listener_port" => self.listener_port.map(|v| v.to_string()),
"disable_listener" => self.disable_listener.map(|v| v.to_string()),
"accept_children" => self.accept_children.map(|v| v.to_string()),
"download_dir" => self.download_dir.clone(),
"shared_dirs" => {
let dirs = self.shared_dirs.clone().unwrap_or_default();
(!dirs.is_empty()).then(|| dirs.join(","))
}
"max_concurrent_downloads" => {
self.max_concurrent_downloads.map(|v| v.to_string())
}
"search_timeout" => self.search_timeout.map(|v| v.to_string()),
"password_cmd" => self.password_cmd.clone(),
"daemon" => self.daemon.clone(),
"daemon_token" => self.daemon_token.clone(),
_ => None,
}
}
/// Set `key` to `value`, or clear it when `value` is empty.
///
/// # Errors
/// Returns a message naming the problem when the key is unknown or the
/// value does not parse as that setting's type.
pub fn set(
&mut self,
key: &str,
value: &str,
) -> std::result::Result<(), String> {
let value = value.trim();
let clear = value.is_empty();
let text = |target: &mut Option<String>| {
*target = (!clear).then(|| value.to_string());
};
match key {
"username" => text(&mut self.username),
"server" => text(&mut self.server),
"download_dir" => text(&mut self.download_dir),
"password_cmd" => text(&mut self.password_cmd),
"daemon" => text(&mut self.daemon),
"daemon_token" => text(&mut self.daemon_token),
"listener_port" => {
self.listener_port = parse_opt(value, clear, key)?;
}
"max_concurrent_downloads" => {
self.max_concurrent_downloads = parse_opt(value, clear, key)?;
}
"search_timeout" => {
self.search_timeout = parse_opt(value, clear, key)?;
}
"disable_listener" => {
self.disable_listener = if clear {
None
} else {
Some(match value {
"true" | "1" | "yes" => true,
"false" | "0" | "no" => false,
other => {
return Err(format!(
"disable_listener wants true or false, got \
'{other}'"
));
}
})
};
}
"accept_children" => {
self.accept_children = if clear {
None
} else {
Some(match value {
"true" | "1" | "yes" => true,
"false" | "0" | "no" => false,
other => {
return Err(format!(
"accept_children wants true or false, got \
'{other}'"
));
}
})
};
}
"shared_dirs" => {
self.shared_dirs = (!clear).then(|| {
value
.split(',')
.map(str::trim)
.filter(|dir| !dir.is_empty())
.map(String::from)
.collect()
});
// The single-folder spelling would otherwise shadow the list.
self.shared_dir = None;
}
other => {
return Err(format!(
"unknown setting '{other}' — try one of: {}",
Self::KEYS.join(", ")
));
}
}
Ok(())
}
/// The standing searches, in the order they were added.
#[must_use]
pub fn wishes(&self) -> Vec<String> {
self.wishlist.clone().unwrap_or_default()
}
/// Add `query` to the wishlist. Returns whether it changed anything: a
/// blank query and a case-insensitive repeat are both refused, so adding
/// the same wish twice cannot fill the file with duplicates the server
/// would then be asked about twice per interval.
pub fn add_wish(&mut self, query: &str) -> bool {
let query = query.trim();
if query.is_empty() || self.find_wish(query).is_some() {
return false;
}
self.wishlist
.get_or_insert_with(Vec::new)
.push(query.to_string());
true
}
/// Remove `query`, matched the same way [`Self::add_wish`] compares.
/// Returns whether it was there.
pub fn remove_wish(&mut self, query: &str) -> bool {
let Some(index) = self.find_wish(query.trim()) else {
return false;
};
self.wishlist.get_or_insert_with(Vec::new).remove(index);
true
}
/// The stored wish matching `query`, compared the way [`Self::add_wish`]
/// compares. Callers that need to act on a named wish go through this so
/// "the same wish" means one thing everywhere.
#[must_use]
pub fn wish(&self, query: &str) -> Option<&String> {
let index = self.find_wish(query.trim())?;
self.wishlist.as_ref()?.get(index)
}
fn find_wish(&self, query: &str) -> Option<usize> {
let wanted = query.to_lowercase();
self.wishlist
.as_ref()?
.iter()
.position(|wish| wish.to_lowercase() == wanted)
}
/// Load from `path`; a missing file is an empty config, a malformed file
/// is an error (silently ignoring a typo'd config would be worse).
pub fn load(path: &Path) -> Result<Self> {
let text = match std::fs::read_to_string(path) {
Ok(text) => text,
Err(e) if e.kind() == std::io::ErrorKind::NotFound => {
return Ok(Self::default());
}
Err(e) => {
return Err(color_eyre::eyre::eyre!(
"Cannot read {}: {e}",
path.display()
));
}
};
toml::from_str(&text).map_err(|e| {
color_eyre::eyre::eyre!("Malformed {}: {e}", path.display())
})
}
/// Save to `path`, creating parent directories as needed.
pub fn save(&self, path: &Path) -> Result<()> {
if let Some(parent) = path.parent() {
std::fs::create_dir_all(parent)?;
}
std::fs::write(path, toml::to_string_pretty(self)?)?;
Ok(())
}
}
/// Parse a setting that is not a string, turning a bad value into a message
/// naming the key rather than a bare parse error.
fn parse_opt<T: std::str::FromStr>(
value: &str,
clear: bool,
key: &str,
) -> std::result::Result<Option<T>, String> {
if clear {
return Ok(None);
}
value
.parse::<T>()
.map(Some)
.map_err(|_| format!("{key} does not accept '{value}'"))
}
/// Fully-resolved settings after layering CLI (which already includes env via
/// clap) over the config file over built-in defaults.
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct Resolved {
pub username: Option<String>,
pub server: String,
pub listener_port: u16,
pub disable_listener: bool,
pub accept_children: bool,
pub download_dir: String,
pub shared_dirs: Vec<String>,
pub max_concurrent_downloads: usize,
pub search_timeout: u64,
pub password_cmd: Option<String>,
pub daemon: Option<String>,
pub daemon_token: Option<String>,
}
pub const DEFAULT_SERVER: &str = "server.slsknet.org:2416";
pub const DEFAULT_LISTENER_PORT: u16 = 2234;
/// How many downloads run at once by default.
///
/// Downstream is the abundant direction, and a Soulseek transfer is paced by
/// the sending peer — usually a few hundred KiB/s — so filling a modern link
/// takes many transfers at once, not faster ones. Twenty at a typical peer rate
/// is tens of MiB/s, and costs twenty threads and sockets, which is nothing.
pub const DEFAULT_MAX_CONCURRENT_DOWNLOADS: usize = 20;
pub const DEFAULT_SEARCH_TIMEOUT: u64 = 10;
/// Layer CLI/env values over the config file over defaults.
///
/// The listener has an explicit form in both directions: `--listener` beats
/// `--no-listener` (and `SOULSEEK_NO_LISTENER`), which beats the file's
/// `disable_listener`, so a config file can always be overridden per run.
#[must_use]
pub fn resolve(cli: &crate::cli::Cli, file: &FileConfig) -> Resolved {
let download_dir = cli
.download_dir
.clone()
.or_else(|| file.download_dir.clone())
.unwrap_or_else(super::paths::default_download_dir);
let disable_listener = if cli.listener {
false
} else {
cli.no_listener || file.disable_listener.unwrap_or(false)
};
Resolved {
username: cli.username.clone().or_else(|| file.username.clone()),
server: cli
.server
.clone()
.or_else(|| file.server.clone())
.unwrap_or_else(|| DEFAULT_SERVER.to_string()),
listener_port: cli
.listener_port
.or(file.listener_port)
.unwrap_or(DEFAULT_LISTENER_PORT),
disable_listener,
// A client with no listener has nothing for a child to dial, so the
// setting only takes effect alongside one.
accept_children: file.accept_children.unwrap_or(false)
&& !disable_listener,
download_dir: download_dir.clone(),
shared_dirs: resolve_shared_dirs(cli, file, &download_dir),
max_concurrent_downloads: cli
.max_concurrent_downloads
.or(file.max_concurrent_downloads)
.unwrap_or(DEFAULT_MAX_CONCURRENT_DOWNLOADS),
search_timeout: cli
.search_timeout
.or(file.search_timeout)
.unwrap_or(DEFAULT_SEARCH_TIMEOUT),
password_cmd: cli
.password_cmd
.clone()
.or_else(|| file.password_cmd.clone()),
daemon: cli.daemon.clone().or_else(|| file.daemon.clone()),
daemon_token: cli
.daemon_token
.clone()
.or_else(|| file.daemon_token.clone()),
}
}
/// Sharing follows the Soulseek convention of sharing what you download:
/// with nothing configured, the download folder is shared. Configuring any
/// of `--shared-dir` / `shared_dir` / `shared_dirs` replaces that default
/// (their non-empty values are combined), and an explicitly empty value
/// (`shared_dir = ""` or `shared_dirs = []`) disables sharing entirely.
fn resolve_shared_dirs(
cli: &crate::cli::Cli,
file: &FileConfig,
download_dir: &str,
) -> Vec<String> {
if cli.shared_dir.is_empty()
&& file.shared_dir.is_none()
&& file.shared_dirs.is_none()
{
return vec![download_dir.to_string()];
}
let mut dirs: Vec<String> = Vec::new();
let singles = cli.shared_dir.iter().chain(file.shared_dir.iter());
for dir in singles.chain(file.shared_dirs.iter().flatten()) {
let dir = dir.trim();
if !dir.is_empty() && !dirs.iter().any(|d| d == dir) {
dirs.push(dir.to_string());
}
}
dirs
}
#[cfg(test)]
mod tests {
use super::*;
use crate::cli::Cli;
fn bare_cli() -> Cli {
Cli::default()
}
#[test]
fn defaults_apply_when_cli_and_file_are_empty() {
let resolved = resolve(&bare_cli(), &FileConfig::default());
assert_eq!(resolved.server, DEFAULT_SERVER);
assert_eq!(resolved.listener_port, DEFAULT_LISTENER_PORT);
assert_eq!(
resolved.max_concurrent_downloads,
DEFAULT_MAX_CONCURRENT_DOWNLOADS
);
assert_eq!(resolved.search_timeout, DEFAULT_SEARCH_TIMEOUT);
assert!(!resolved.disable_listener);
assert_eq!(resolved.username, None);
}
#[test]
fn default_download_dir_is_a_soulseek_folder_under_downloads() {
let resolved = resolve(&bare_cli(), &FileConfig::default());
let path = std::path::Path::new(&resolved.download_dir);
assert!(path.is_absolute(), "must not rely on ~ expansion");
assert_eq!(path.file_name().and_then(|n| n.to_str()), Some("Soulseek"));
assert_eq!(
path.parent()
.and_then(|p| p.file_name())
.and_then(|n| n.to_str()),
Some("Downloads")
);
}
#[test]
fn sharing_defaults_to_the_download_dir() {
let resolved = resolve(&bare_cli(), &FileConfig::default());
assert_eq!(resolved.shared_dirs, vec![resolved.download_dir.clone()]);
}
#[test]
fn sharing_follows_a_customized_download_dir() {
let file = FileConfig {
download_dir: Some("/music".into()),
..FileConfig::default()
};
let resolved = resolve(&bare_cli(), &file);
assert_eq!(resolved.shared_dirs, vec!["/music".to_string()]);
}
#[test]
fn empty_shared_dir_disables_sharing() {
let file = FileConfig {
shared_dir: Some(String::new()),
..FileConfig::default()
};
let resolved = resolve(&bare_cli(), &file);
assert!(resolved.shared_dirs.is_empty());
}
#[test]
fn empty_shared_dirs_list_disables_sharing() {
let file = FileConfig {
shared_dirs: Some(Vec::new()),
..FileConfig::default()
};
let resolved = resolve(&bare_cli(), &file);
assert!(resolved.shared_dirs.is_empty());
}
#[test]
fn shared_dirs_list_replaces_the_default_share() {
let file = FileConfig {
shared_dirs: Some(vec!["/a".into(), "/b".into()]),
..FileConfig::default()
};
let resolved = resolve(&bare_cli(), &file);
assert_eq!(
resolved.shared_dirs,
vec!["/a".to_string(), "/b".to_string()]
);
}
#[test]
fn cli_shared_dir_combines_with_file_list_and_dedupes() {
let mut cli = bare_cli();
cli.shared_dir = vec!["/a".into()];
let file = FileConfig {
shared_dirs: Some(vec!["/a".into(), "/b".into()]),
..FileConfig::default()
};
let resolved = resolve(&cli, &file);
assert_eq!(
resolved.shared_dirs,
vec!["/a".to_string(), "/b".to_string()]
);
}
#[test]
fn repeated_cli_shared_dirs_are_all_kept() {
let mut cli = bare_cli();
cli.shared_dir = vec!["/a".into(), "/b".into()];
let resolved = resolve(&cli, &FileConfig::default());
assert_eq!(
resolved.shared_dirs,
vec!["/a".to_string(), "/b".to_string()]
);
}
#[test]
fn an_empty_cli_shared_dir_disables_sharing() {
let mut cli = bare_cli();
cli.shared_dir = vec![String::new()];
let resolved = resolve(&cli, &FileConfig::default());
assert!(resolved.shared_dirs.is_empty());
}
#[test]
fn no_listener_flag_disables_the_listener() {
let mut cli = bare_cli();
cli.no_listener = true;
assert!(resolve(&cli, &FileConfig::default()).disable_listener);
}
#[test]
fn listener_flag_overrides_the_config_file() {
let file = FileConfig {
disable_listener: Some(true),
..FileConfig::default()
};
assert!(resolve(&bare_cli(), &file).disable_listener);
let mut cli = bare_cli();
cli.listener = true;
assert!(!resolve(&cli, &file).disable_listener);
}
#[test]
fn listener_flag_wins_over_no_listener() {
let mut cli = bare_cli();
cli.listener = true;
cli.no_listener = true;
assert!(!resolve(&cli, &FileConfig::default()).disable_listener);
}
#[test]
fn accepting_children_needs_a_listener() {
// Serving children means peers dial us; with the listener off there
// is nothing to dial, so the setting must not survive resolution.
let file = FileConfig {
accept_children: Some(true),
..FileConfig::default()
};
assert!(resolve(&bare_cli(), &file).accept_children);
let off = FileConfig {
disable_listener: Some(true),
..file.clone()
};
assert!(!resolve(&bare_cli(), &off).accept_children);
let mut cli = bare_cli();
cli.no_listener = true;
assert!(!resolve(&cli, &file).accept_children);
}
#[test]
fn accept_children_round_trips_through_get_and_set() {
let mut file = FileConfig::default();
file.set("accept_children", "true").expect("set");
assert_eq!(file.get("accept_children").as_deref(), Some("true"));
assert!(file.set("accept_children", "maybe").is_err());
file.set("accept_children", "").expect("clear");
assert_eq!(file.get("accept_children"), None);
}
#[test]
fn file_values_override_defaults() {
let file = FileConfig {
username: Some("alice".into()),
server: Some("localhost:2242".into()),
listener_port: Some(4321),
disable_listener: Some(true),
accept_children: None,
download_dir: Some("/music".into()),
shared_dir: Some("/shared".into()),
shared_dirs: None,
max_concurrent_downloads: Some(2),
search_timeout: Some(30),
password_cmd: Some("pass show slsk".into()),
daemon: Some("nas.local:5030".into()),
daemon_token: Some("deadbeef".into()),
wishlist: None,
};
let resolved = resolve(&bare_cli(), &file);
assert_eq!(resolved.username.as_deref(), Some("alice"));
assert_eq!(resolved.server, "localhost:2242");
assert_eq!(resolved.listener_port, 4321);
assert!(resolved.disable_listener);
assert_eq!(resolved.download_dir, "/music");
assert_eq!(resolved.shared_dirs, vec!["/shared".to_string()]);
assert_eq!(resolved.daemon.as_deref(), Some("nas.local:5030"));
assert_eq!(resolved.daemon_token.as_deref(), Some("deadbeef"));
assert_eq!(resolved.max_concurrent_downloads, 2);
assert_eq!(resolved.search_timeout, 30);
assert_eq!(resolved.password_cmd.as_deref(), Some("pass show slsk"));
}
#[test]
fn cli_values_override_file_values() {
let mut cli = bare_cli();
cli.username = Some("cli-user".into());
cli.server = Some("cli-server:1".into());
cli.listener_port = Some(1111);
cli.download_dir = Some("/cli-dl".into());
let file = FileConfig {
username: Some("file-user".into()),
server: Some("file-server:2".into()),
listener_port: Some(2222),
download_dir: Some("/file-dl".into()),
..FileConfig::default()
};
let resolved = resolve(&cli, &file);
assert_eq!(resolved.username.as_deref(), Some("cli-user"));
assert_eq!(resolved.server, "cli-server:1");
assert_eq!(resolved.listener_port, 1111);
assert_eq!(resolved.download_dir, "/cli-dl");
}
#[test]
fn every_advertised_key_round_trips_through_get_and_set() {
let mut config = FileConfig::default();
for key in FileConfig::KEYS {
assert!(config.get(key).is_none(), "{key} should start unset");
}
for (key, value) in [
("username", "alice"),
("server", "localhost:2242"),
("listener_port", "4321"),
("disable_listener", "true"),
("download_dir", "/music"),
("shared_dirs", "/a,/b"),
("max_concurrent_downloads", "3"),
("search_timeout", "30"),
("password_cmd", "pass show slsk"),
] {
config.set(key, value).expect("should accept");
assert_eq!(
config.get(key).as_deref(),
Some(value),
"{key} should read back what was written"
);
}
assert_eq!(config.shared_dirs, Some(vec!["/a".into(), "/b".into()]));
}
#[test]
fn an_empty_value_clears_a_setting() {
let mut config = FileConfig {
username: Some("alice".into()),
listener_port: Some(2234),
..FileConfig::default()
};
config.set("username", "").unwrap();
config.set("listener_port", "").unwrap();
assert_eq!(config.username, None);
assert_eq!(config.listener_port, None);
}
#[test]
fn a_value_of_the_wrong_type_is_rejected_by_name() {
let mut config = FileConfig::default();
let error = config.set("listener_port", "not-a-port").unwrap_err();
assert!(error.contains("listener_port"), "got {error}");
assert!(config.get("listener_port").is_none(), "must not be set");
let error = config.set("disable_listener", "maybe").unwrap_err();
assert!(error.contains("true or false"), "got {error}");
}
#[test]
fn an_unknown_key_lists_the_ones_that_exist() {
let mut config = FileConfig::default();
let error = config.set("colour", "blue").unwrap_err();
assert!(error.contains("unknown setting"), "got {error}");
assert!(error.contains("username"), "should suggest real keys");
assert!(config.get("colour").is_none());
}
#[test]
fn setting_the_share_list_drops_the_single_folder_spelling() {
// Both spellings surviving would make the effective share set depend
// on resolution order rather than on what was just written.
let mut config = FileConfig {
shared_dir: Some("/old".into()),
..FileConfig::default()
};
config.set("shared_dirs", "/new").unwrap();
assert_eq!(config.shared_dir, None);
assert_eq!(config.shared_dirs, Some(vec!["/new".to_string()]));
}
#[test]
fn a_set_value_survives_a_save_and_load() {
let dir = tempfile::tempdir().unwrap();
let path = dir.path().join("config.toml");
let mut config = FileConfig::default();
config.set("download_dir", "/music").unwrap();
config.set("max_concurrent_downloads", "2").unwrap();
config.save(&path).unwrap();
let loaded = FileConfig::load(&path).unwrap();
assert_eq!(loaded.get("download_dir").as_deref(), Some("/music"));
assert_eq!(
loaded.get("max_concurrent_downloads").as_deref(),
Some("2")
);
}
#[test]
fn missing_file_loads_as_empty_config() {
let dir = tempfile::tempdir().unwrap();
let config = FileConfig::load(&dir.path().join("config.toml")).unwrap();
assert_eq!(config, FileConfig::default());
}
#[test]
fn save_then_load_round_trips() {
let dir = tempfile::tempdir().unwrap();
let path = dir.path().join("nested").join("config.toml");
let config = FileConfig {
username: Some("alice".into()),
server: Some("localhost:2242".into()),
listener_port: Some(2234),
max_concurrent_downloads: Some(3),
..FileConfig::default()
};
config.save(&path).unwrap();
assert_eq!(FileConfig::load(&path).unwrap(), config);
}
#[test]
fn a_wish_is_added_once_however_it_is_spelled() {
let mut config = FileConfig::default();
assert!(config.add_wish("Aphex Twin"));
assert!(!config.add_wish("aphex twin"), "a repeat is not a new wish");
assert!(!config.add_wish(" Aphex Twin "), "surrounding space too");
assert_eq!(config.wishes(), ["Aphex Twin"]);
}
#[test]
fn an_empty_wish_is_refused() {
let mut config = FileConfig::default();
assert!(!config.add_wish(" "));
assert!(config.wishes().is_empty());
}
#[test]
fn removing_a_wish_ignores_case_and_reports_whether_it_was_there() {
let mut config = FileConfig::default();
config.add_wish("Boards of Canada");
assert!(config.remove_wish("BOARDS OF CANADA"));
assert!(config.wishes().is_empty());
assert!(!config.remove_wish("never added"));
}
#[test]
fn wishes_keep_the_order_they_were_added_in() {
let mut config = FileConfig::default();
for wish in ["first", "second", "third"] {
config.add_wish(wish);
}
config.remove_wish("second");
assert_eq!(config.wishes(), ["first", "third"]);
}
#[test]
fn a_wishlist_survives_a_save_and_load() {
let dir = tempfile::tempdir().unwrap();
let path = dir.path().join("config.toml");
let mut config = FileConfig::default();
config.add_wish("autechre, incunabula");
config.add_wish("plaid");
config.save(&path).unwrap();
assert_eq!(
FileConfig::load(&path).unwrap().wishes(),
["autechre, incunabula", "plaid"],
"a comma inside a wish must survive the round trip"
);
}
#[test]
fn unknown_keys_and_partial_files_are_tolerated() {
let dir = tempfile::tempdir().unwrap();
let path = dir.path().join("config.toml");
std::fs::write(&path, "username = \"bob\"\nfuture_option = true\n")
.unwrap();
let config = FileConfig::load(&path).unwrap();
assert_eq!(config.username.as_deref(), Some("bob"));
assert_eq!(config.server, None);
}
#[test]
fn malformed_file_is_an_error() {
let dir = tempfile::tempdir().unwrap();
let path = dir.path().join("config.toml");
std::fs::write(&path, "username = [unclosed").unwrap();
assert!(FileConfig::load(&path).is_err());
}
}