Hopefully I'm using this as intended, but I'm trying to add a simple progress bar to a bash script.

#!/bin/bash

while true; do
        echo -ne "Testing\n"
        sleep 1
done

The output looks as intended (testing printed on a new line every 1 second). However, tqdm never progresses if I pipe in the output from this program as follows (tried with and without totals, different delimiters, all no luck):

./test.sh | tqdm --total "5"

The output is stuck here (checked up to 10 minutes).

0it [00:00, ?it/s]

I've used tqdm in plenty of Python scripts but I'm not entirely sure I grok its usage in the command line.