Performance comparison test script for https://github.com/dgholz/detect_virtualenv/issues/13

perlf_test.sh

#!/bin/bash

function switch_branch() {
  for branch in master f/fast_find
  do
    git -C ~/.vendor/detect_virtualenv checkout $branch >/dev/null 2>&1
    . ~/.vendor/detect_virtualenv/detect_virtualenv 2>/dev/null
    $@ $branch
  done
}

function start_in_dirs() {
  base=$(mktemp -d /tmp/tmp.XXXXXX)
  trap 'rm -rf base' EXIT
  mydirs=($base foo bar baz quux quuux bie bletch)
  ( IFS=/; mkdir -p "${mydirs[*]}" )
  mkdir "$base/target"
  for depth in $( seq 0 ${#mydirs[@]} )
  do
    cd ${mydirs[$depth]}
    $@ $depth
  done
}

function set_virtualenv_names() {
  for names in $( seq 1 9 )
  do
    export MY_VIRTUALENV_NAMES=$( ( seq 1 $name; echo target ) | paste -sd':' - )
    $@ $names
  done
}

function time_it() {
  local c=$1; shift
  ( IFS=,; echo -n "$*," )
  ( time $c >/dev/null ) 2>&1 | grep real | awk '{ print $2 }' | sed -e's/m/*60000 + /' -e's/s$/*1000/' | bc | cut -f1 -d.
}

function main() {
  echo "branch,dir_depth,candidate_count,duration"
  switch_branch start_in_dirs set_virtualenv_names time_it detect_virtualenv
}

main