commit c850527cce7134f4adf4fe6dac07214678deb72b
Author: Sam Stephenson <sam@37signals.com>
Date:   Wed Dec 28 12:40:14 2011 -0600

    Initial commit

diff --git a/bin/bats b/bin/bats
new file mode 120000
index 0000000..a50a884
--- /dev/null
+++ b/bin/bats
@@ -0,0 +1 @@
+../libexec/bats
\ No newline at end of file
diff --git a/libexec/bats b/libexec/bats
new file mode 100755
index 0000000..1f5351c
--- /dev/null
+++ b/libexec/bats
@@ -0,0 +1,38 @@
+#!/usr/bin/env bash
+set -e
+
+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 "$cwd"
+}
+
+expand_path() {
+  echo "$(abs_dirname "$(dirname "$1")")/$(basename "$1")"
+}
+
+BATS_LIBEXEC="$(abs_dirname "$0")"
+export BATS_PREFIX="$(abs_dirname "$BATS_LIBEXEC")"
+export PATH="$BATS_LIBEXEC:$PATH"
+
+filename="$1"
+if [ -z "$filename" ]; then
+  echo "usage: $0 <filename>" >&2
+  exit 1
+else
+  shift
+fi
+
+exec bats-exec "$(expand_path "$filename")" "$@"
diff --git a/libexec/bats-exec b/libexec/bats-exec
new file mode 100755
index 0000000..3901999
--- /dev/null
+++ b/libexec/bats-exec
@@ -0,0 +1,91 @@
+#!/usr/bin/env bash
+set -e
+
+BATS_TEST_FILENAME="$1"
+if [ -z "$BATS_TEST_FILENAME" ]; then
+  echo "usage: bats-exec <filename>" >&2
+  exit 1
+elif [ ! -f "$BATS_TEST_FILENAME" ]; then
+  echo "bats: $BATS_TEST_FILENAME does not exist"
+  exit 1
+else
+  shift
+fi
+
+BATS_TEST_DIRNAME="$(dirname "$BATS_TEST_FILENAME")"
+BATS_TEST_NAMES=()
+
+load() {
+  source "$BATS_TEST_DIRNAME/$1.bash"
+}
+
+abort() {
+  [ "$#" -eq 0 ] || echo error: "$@" >&2
+  exit 1
+}
+
+setup() {
+  true
+}
+
+teardown() {
+  true
+}
+
+bats_test_info() {
+  BATS_TEST_DESCRIPTION="$1"
+  BATS_LINE_NUMBER="$2"
+}
+
+bats_test_function() {
+  local test_name="$1"
+  BATS_TEST_NAMES["${#BATS_TEST_NAMES[@]}"]="$test_name"
+}
+
+bats_exit_trap() {
+  if [ -z "$BATS_TEST_COMPLETED" ]; then
+    echo "not ok $BATS_TEST_NUMBER $BATS_TEST_DESCRIPTION"
+    exit 1
+  else
+    echo "ok $BATS_TEST_NUMBER $BATS_TEST_DESCRIPTION"
+    exit 0
+  fi
+}
+
+bats_perform_tests() {
+  echo "1..$#"
+  test_number=1
+  for test_name in "$@"; do
+    "$0" "$BATS_TEST_FILENAME" "$test_name" "$test_number" || true
+    test_number=$(($test_number + 1))
+  done
+}
+
+bats_perform_test() {
+  BATS_TEST_NAME="$1"
+  if [ "$(type -t "$BATS_TEST_NAME" || true)" = "function" ]; then
+    BATS_TEST_NUMBER="$2"
+    if [ -z "$BATS_TEST_NUMBER" ]; then
+      echo "1..1"
+      BATS_TEST_NUMBER="1"
+    fi
+
+    BATS_TEST_COMPLETED=""
+    trap bats_exit_trap err exit
+    setup
+    "$BATS_TEST_NAME"
+    BATS_TEST_COMPLETED=1
+
+  else
+    echo "bats: unknown test name \`$BATS_TEST_NAME'" >&2
+    exit 1
+  fi
+}
+
+eval "$(bats-preprocess < "$BATS_TEST_FILENAME")"
+
+if [ "$#" -eq 0 ]; then
+  bats_perform_tests "${BATS_TEST_NAMES[@]}"
+else
+  bats_perform_test "$@"
+fi
diff --git a/libexec/bats-preprocess b/libexec/bats-preprocess
new file mode 100755
index 0000000..55406b4
--- /dev/null
+++ b/libexec/bats-preprocess
@@ -0,0 +1,51 @@
+#!/usr/bin/env bash
+set -e
+
+encode_name() {
+  local name="$1"
+  local result="test_"
+
+  if [[ ! "$name" =~ [^[:alnum:]\ _-] ]]; then
+    name="${name//_/-5f}"
+    name="${name//-/-2d}"
+    name="${name// /_}"
+    result+="$name"
+  else
+    local length="${#name}"
+    local char i
+
+    for ((i=0; i<length; i++)); do
+      char="${name:$i:1}"
+      if [ "$char" = " " ]; then
+        result+="_"
+      elif [[ "$char" =~ [[:alnum:]] ]]; then
+        result+="$char"
+      else
+        result+="$(printf -- "-%02x" \'"$char")"
+      fi
+    done
+  fi
+
+  echo "$result"
+}
+
+tests=()
+index=0
+
+while IFS= read -r line; do
+  index=$(($index + 1))
+  quoted_name="$(expr "$line" : '^ *@test  *\([^ ].*\)  *{ *$' || true)"
+
+  if [ -n "$quoted_name" ]; then
+    name="$(eval echo "$quoted_name")"
+    encoded_name="$(encode_name "$name")"
+    tests["${#tests[@]}"]="$encoded_name"
+    echo "${encoded_name}() { bats_test_info ${quoted_name} ${index}"
+  else
+    echo "$line"
+  fi
+done
+
+for test_name in "${tests[@]}"; do
+  echo "bats_test_function ${test_name}"
+done