# Created on savesnippets.com · https://savesnippets.com/6wVgznHmRfj1ZE
spinner() {
    local pid="$1" msg="$2"
    local chars="⠋⠙⠹⠸⠼⠴⠦⠧⠇⠏"
    local i=0
    while kill -0 "$pid" 2>/dev/null; do
        printf "\r%s %s " "${chars:i++%${#chars}:1}" "$msg"
        sleep 0.1
    done
    printf "\r✓ %s\n" "$msg"
}

with_spinner() {
    local msg="$1"; shift
    "$@" &
    spinner $! "$msg"
    wait $!
}

with_spinner "Downloading…" sleep 3
with_spinner "Installing…" sleep 2
with_spinner "Running tests" pytest -q