test(desktop): avoid passphrase separator collisions

Signed-off-by: Brian Charbonneau <github@briancharbonneau.com>

Author: BrianInAz

desktop/src-tauri/src/key_backup_tests.rs

@@ -211,12 +211,16 @@ fn generated_passphrase_respects_word_count_and_separator() {
 
 #[test]
 fn generated_passphrase_clamps_word_count() {
+    // Use a separator that cannot appear in the EFF wordlist so a generated
+    // word such as "yo-yo" cannot be mistaken for two words.
+    const SEPARATOR: &str = "|";
+
     // Below the floor: clamped up to MIN_PASSPHRASE_WORDS, never shorter.
-    let phrase = generate_passphrase(1, "-").unwrap();
-    assert_eq!(phrase.split('-').count(), MIN_PASSPHRASE_WORDS);
+    let phrase = generate_passphrase(1, SEPARATOR).unwrap();
+    assert_eq!(phrase.split(SEPARATOR).count(), MIN_PASSPHRASE_WORDS);
     // Above the ceiling: clamped down to MAX_PASSPHRASE_WORDS.
-    let phrase = generate_passphrase(50, "-").unwrap();
-    assert_eq!(phrase.split('-').count(), MAX_PASSPHRASE_WORDS);
+    let phrase = generate_passphrase(50, SEPARATOR).unwrap();
+    assert_eq!(phrase.split(SEPARATOR).count(), MAX_PASSPHRASE_WORDS);
 }
 
 #[test]