add testing

Signed-off-by: Arnav Gupta <arnav@codingblocks.com>

Author: championswimmer

bats/bin/bats

@@ -0,0 +1 @@
+../libexec/bats

bats/libexec/bats

@@ -0,0 +1,142 @@
+#!/usr/bin/env bash
+set -e
+
+version() {
+  echo "Bats 0.4.0"
+}
+
+usage() {
+  version
+  echo "Usage: bats [-c] [-p | -t] <test> [<test> ...]"
+}
+
+help() {
+  usage
+  echo
+  echo "  <test> is the path to a Bats test file, or the path to a directory"
+  echo "  containing Bats test files."
+  echo
+  echo "  -c, --count    Count the number of test cases without running any tests"
+  echo "  -h, --help     Display this help message"
+  echo "  -p, --pretty   Show results in pretty format (default for terminals)"
+  echo "  -t, --tap      Show results in TAP format"
+  echo "  -v, --version  Display the version number"
+  echo
+  echo "  For more information, see https://github.com/sstephenson/bats"
+  echo
+}
+
+resolve_link() {
+  $(type -p greadlink readlink | head -1) "$1"
+}
+
+abs_dirname() {
+  local cwd="$(pwd)"
+  local path="$1"
+
+  while [ -n "$path" ]; do
+    cd "${path%/*}"
+    local name="${path##*/}"
+    path="$(resolve_link "$name" || true)"
+  done
+
+  pwd
+  cd "$cwd"
+}
+
+expand_path() {
+  { cd "$(dirname "$1")" 2>/dev/null
+    local dirname="$PWD"
+    cd "$OLDPWD"
+    echo "$dirname/$(basename "$1")"
+  } || echo "$1"
+}
+
+BATS_LIBEXEC="$(abs_dirname "$0")"
+export BATS_PREFIX="$(abs_dirname "$BATS_LIBEXEC")"
+export BATS_CWD="$(abs_dirname .)"
+export PATH="$BATS_LIBEXEC:$PATH"
+
+options=()
+arguments=()
+for arg in "$@"; do
+  if [ "${arg:0:1}" = "-" ]; then
+    if [ "${arg:1:1}" = "-" ]; then
+      options[${#options[*]}]="${arg:2}"
+    else
+      index=1
+      while option="${arg:$index:1}"; do
+        [ -n "$option" ] || break
+        options[${#options[*]}]="$option"
+        let index+=1
+      done
+    fi
+  else
+    arguments[${#arguments[*]}]="$arg"
+  fi
+done
+
+unset count_flag pretty
+[ -t 0 ] && [ -t 1 ] && pretty="1"
+[ -n "$CI" ] && pretty=""
+
+for option in "${options[@]}"; do
+  case "$option" in
+  "h" | "help" )
+    help
+    exit 0
+    ;;
+  "v" | "version" )
+    version
+    exit 0
+    ;;
+  "c" | "count" )
+    count_flag="-c"
+    ;;
+  "t" | "tap" )
+    pretty=""
+    ;;
+  "p" | "pretty" )
+    pretty="1"
+    ;;
+  * )
+    usage >&2
+    exit 1
+    ;;
+  esac
+done
+
+if [ "${#arguments[@]}" -eq 0 ]; then
+  usage >&2
+  exit 1
+fi
+
+filenames=()
+for filename in "${arguments[@]}"; do
+  if [ -d "$filename" ]; then
+    shopt -s nullglob
+    for suite_filename in "$(expand_path "$filename")"/*.bats; do
+      filenames["${#filenames[@]}"]="$suite_filename"
+    done
+    shopt -u nullglob
+  else
+    filenames["${#filenames[@]}"]="$(expand_path "$filename")"
+  fi
+done
+
+if [ "${#filenames[@]}" -eq 1 ]; then
+  command="bats-exec-test"
+else
+  command="bats-exec-suite"
+fi
+
+if [ -n "$pretty" ]; then
+  extended_syntax_flag="-x"
+  formatter="bats-format-tap-stream"
+else
+  extended_syntax_flag=""
+  formatter="cat"
+fi
+
+set -o pipefail execfail
+exec "$command" $count_flag $extended_syntax_flag "${filenames[@]}" | "$formatter"

bats/libexec/bats-exec-suite

@@ -0,0 +1,55 @@
+#!/usr/bin/env bash
+set -e
+
+count_only_flag=""
+if [ "$1" = "-c" ]; then
+  count_only_flag=1
+  shift
+fi
+
+extended_syntax_flag=""
+if [ "$1" = "-x" ]; then
+  extended_syntax_flag="-x"
+  shift
+fi
+
+trap "kill 0; exit 1" int
+
+count=0
+for filename in "$@"; do
+  let count+="$(bats-exec-test -c "$filename")"
+done
+
+if [ -n "$count_only_flag" ]; then
+  echo "$count"
+  exit
+fi
+
+echo "1..$count"
+status=0
+offset=0
+for filename in "$@"; do
+  index=0
+  {
+    IFS= read -r # 1..n
+    while IFS= read -r line; do
+      case "$line" in
+      "begin "* )
+        let index+=1
+        echo "${line/ $index / $(($offset + $index)) }"
+        ;;
+      "ok "* | "not ok "* )
+        [ -n "$extended_syntax_flag" ] || let index+=1
+        echo "${line/ $index / $(($offset + $index)) }"
+        [ "${line:0:6}" != "not ok" ] || status=1
+        ;;
+      * )
+        echo "$line"
+        ;;
+      esac
+    done
+  } < <( bats-exec-test $extended_syntax_flag "$filename" )
+  offset=$(($offset + $index))
+done
+
+exit "$status"