Improved unit tests coverage

how-to-create-encrypted-paper-backup/tests/default.exp

@@ -89,13 +89,13 @@ expect {
   }
 }
 
-test_label "Should format USB flash drive and backup secret showing passphrase"
+test_label "Should backup secret showing passphrase"
 
 spawn qr-backup.sh
 
 expect {
   -re {Format USB flash drive \(y or n\)\?} {
-    test_send "y\r"
+    test_send "n\r"
   }
 }
 
@@ -105,10 +105,6 @@ expect {
   }
 }
 
-expect {
-  -re {mkfs\.fat 4\.1 \(2017-01-24\)}
-}
-
 expect {
   -re {Please type secret and press enter, then ctrl\+d} {
     test_send "$secret\r"
@@ -191,7 +187,7 @@ expect {
   }
 }
 
-regsub -all {(\e\(B)?\e\[[0-9]*?m} $restored_secret {} restored_secret
+regsub -all {\033\[[0-9]*m(\017)?} $restored_secret {} restored_secret
 regsub -all {\r} $restored_secret {} restored_secret
 
 if { "$restored_secret" != "$secret" } {