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8 changes: 8 additions & 0 deletions rust/src/cli.rs
Original file line number Diff line number Diff line change
Expand Up @@ -259,6 +259,11 @@ impl Args {
#[cfg(test)]
mod tests {
use super::*;
use std::sync::Mutex;

// The display language is process-global, so tests that change it must not overlap.
static LANGUAGE_LOCK: Mutex<()> = Mutex::new(());

#[test]
fn new_graph_arguments_parse() {
let args = Args::try_parse_from([
Expand Down Expand Up @@ -332,6 +337,7 @@ mod tests {

#[test]
fn long_help_localizes_shortcuts_between_options_and_system_info() {
let _language_lock = LANGUAGE_LOCK.lock().unwrap();
for (lang, title, previous, graph, system) in [
(
Lang::EnUs,
Expand Down Expand Up @@ -391,6 +397,8 @@ mod tests {

#[test]
fn long_help_decorates_keyboard_shortcuts_with_emoji() {
let _language_lock = LANGUAGE_LOCK.lock().unwrap();
set_lang(Lang::EnUs);
let plain = translated_command(false).render_long_help().to_string();
let emoji = translated_command(true).render_long_help().to_string();

Expand Down
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