Some basic performance tests so we can profile changes

test-performance.sh

@@ -0,0 +1,109 @@
+scriptDir="$(cd "$(dirname "$0")"; pwd)"
+
+source "$scriptDir/radar-base.sh"
+
+cd_to_tmp() {
+  tmpfile="/tmp/git-prompt-tests-$(time_now)$1"
+  mkdir -p "$tmpfile"
+  cd "$tmpfile"
+}
+
+rm_tmp() {
+  cd $scriptDir
+  rm -rf /tmp/git-prompt-tests*
+}
+
+report() {
+  arr=( "$@" )
+  printf '%s\n' "${arr[@]}" | sort -n | awk '
+  function colored(s) {
+    OFMT="%2.3fs";
+    OFS="";
+    ORS="";
+    if( s > 0.2 ) {
+      print "\033[1;31m", s, "\033[0m"
+    } else if( s > 0.1 ) {
+      print "\033[1;33m", s, "\033[0m"
+    } else {
+      print "\033[1;32m", s, "\033[0m"
+    }
+    OFS="\t";
+    ORS="\n";
+  }
+  BEGIN {
+    c = 0;
+    sum = 0;
+  }
+  $1 ~ /^[0-9]*(\.[0-9]*)?$/ {
+    a[c++] = $1;
+    sum += $1;
+  }
+  END {
+    min = a[0] + 0;
+    max = a[c-1] + 0;
+    ave = sum / c;
+    if( (c % 2) == 1 ) {
+      median = a[ int(c/2) ];
+    } else {
+      median = ( a[c/2] + a[c/2-1] ) / 2;
+    }
+    OFS="\t";
+    OFMT="%2.3fs";
+    print c, colored(ave), colored(median), colored(min), colored(max);
+  }
+'
+}
+
+table_headers() {
+  printf "\t\tMean\tMedian\tMin\tMax\n"
+}
+
+profile () {
+  cmd="$2"
+  printf '%s\t' $1
+  for (( i = 0; i < 100; i++ )); do
+    start=$(gdate +%s.%N)
+    eval $cmd > /dev/null
+    duration=$(echo "$(gdate +%s.%N) - $start" | bc)
+    timings[$i]=$duration
+  done
+  report "${timings[@]}"
+}
+
+test_empty_repo() {
+  cd_to_tmp
+  git init --quiet
+
+  table_headers
+  profile "prompt.zsh" "/.$scriptDir/prompt.zsh"
+  profile "prompt.bash" "/.$scriptDir/prompt.bash"
+
+  rm_tmp
+}
+
+test_large_repo() {
+  cd_to_tmp
+  git clone https://github.com/Homebrew/homebrew --quiet
+  cd homebrew
+
+  table_headers
+  profile "prompt.zsh" "/.$scriptDir/prompt.zsh"
+  profile "prompt.bash" "/.$scriptDir/prompt.bash"
+
+  rm_tmp
+}
+
+test_lots_of_submodules() {
+  cd_to_tmp
+  git clone https://github.com/michaeldfallen/dotfiles --quiet
+  cd dotfiles
+  git submodule update --init --quiet
+
+  table_headers
+  profile "prompt.zsh" "/.$scriptDir/prompt.zsh"
+  profile "prompt.bash" "/.$scriptDir/prompt.bash"
+
+  rm_tmp
+}
+
+. ./shunit/shunit2