Merge branch 'unittest' (#21)

.travis.yml

@@ -0,0 +1,4 @@
+install: git clone https://github.com/sstephenson/bats.git
+script: bats/bin/bats --tap test
+# skips unnecessary Python-specific setup
+language: c

libexec/pyenv-local

@@ -38,13 +38,14 @@ versions=($@)
 if [ "$versions" = "--unset" ]; then
   rm -f .python-version .pyenv-version
 elif [ -n "$versions" ]; then
-  if [ "$(PYENV_VERSION= pyenv-version-origin)" -ef .pyenv-version ]; then
+  previous_file="$(PYENV_VERSION= pyenv-version-origin || true)"
+  pyenv-version-file-write .python-version "${versions[@]}"
+  if [ "$previous_file" -ef .pyenv-version ]; then
     rm -f .pyenv-version
     { echo "pyenv: removed existing \`.pyenv-version' file and migrated"
       echo "       local version specification to \`.python-version' file"
     } >&2
   fi
-  pyenv-version-file-write .python-version "${versions[@]}"
 else
   OLDIFS="$IFS"
   IFS=: versions=($(

libexec/pyenv-prefix

@@ -16,22 +16,26 @@ if [ "$1" = "--complete" ]; then
 fi
 
 if [ -n "$1" ]; then
-  versions=($@)
   OLDIFS="$IFS"
-  IFS=: PYENV_VERSION="${versions[*]}"
-  IFS="$OLDIFS"
-  export PYENV_VERSION
-else
-  OLDIFS="$IFS"
-  IFS=: versions=($(pyenv-version-name))
+  { IFS=:
+    export PYENV_VERSION="$*"
+  }
   IFS="$OLDIFS"
+elif [ -z "$PYENV_VERSION" ]; then
+  PYENV_VERSION="$(pyenv-version-name)"
 fi
 
 PYENV_PREFIX_PATHS=()
-for version in "${versions[@]}"; do
+OLDIFS="$IFS"
+{ IFS=:
+  for version in ${PYENV_VERSION}; do
     if [ "$version" = "system" ]; then
-    PYTHON_PATH="$(PYENV_VERSION="${version}" pyenv-which python || true)"
+      if PYTHON_PATH="$(pyenv-which python 2>/dev/null)"; then
         PYENV_PREFIX_PATH="${PYTHON_PATH%/bin/*}"
+      else
+        echo "pyenv: system version not found in PATH" >&2
+        exit 1
+      fi
     else
       PYENV_PREFIX_PATH="${PYENV_ROOT}/versions/${version}"
     fi
@@ -41,7 +45,9 @@ for version in "${versions[@]}"; do
       echo "pyenv: version \`${version}' not installed" >&2
       exit 1
     fi
-done
+  done
+}
+IFS="$OLDIFS"
 
 OLDIFS="$IFS"
 { IFS=:

libexec/pyenv-version-file-write

@@ -5,7 +5,7 @@ set -e
 [ -n "$PYENV_DEBUG" ] && set -x
 
 PYENV_VERSION_FILE="$1"
-shift
+shift || true
 versions=("$@")
 
 if [ -z "$versions" ] || [ -z "$PYENV_VERSION_FILE" ]; then

libexec/pyenv-version-name

@@ -5,18 +5,10 @@ set -e
 
 if [ -z "$PYENV_VERSION" ]; then
   PYENV_VERSION_FILE="$(pyenv-version-file)"
-  OLDIFS="$IFS"
-  IFS=: versions=($(pyenv-version-file-read "$PYENV_VERSION_FILE" || true))
-  IFS=: PYENV_VERSION="${versions[*]}"
-  IFS="$OLDIFS"
-  export PYENV_VERSION
-else
-  OLDIFS="$IFS"
-  IFS=: versions=($(echo "${PYENV_VERSION}"))
-  IFS="$OLDIFS"
+  PYENV_VERSION="$(pyenv-version-file-read "$PYENV_VERSION_FILE" || true)"
 fi
 
-if [ -z "$versions" ] || [ "$versions" = "system" ]; then
+if [ -z "$PYENV_VERSION" ] || [ "$PYENV_VERSION" = "system" ]; then
   echo "system"
   exit
 fi
@@ -26,11 +18,27 @@ version_exists() {
   [ -d "${PYENV_ROOT}/versions/${version}" ]
 }
 
-for version in "${versions[@]}"; do
-  if [ "$version" != "system" ] && ! version_exists "$version"; then
+versions=()
+OLDIFS="$IFS"
+{ IFS=:
+  for version in ${PYENV_VERSION}; do
+    if version_exists "$version" || [ "$version" = "system" ]; then
+      versions=("${versions[@]}" "${version}")
+    elif version_exists "${version#python-}"; then
+      { echo "warning: ignoring extraneous \`python-' prefix in version \`${version}'"
+        echo "         (set by $(pyenv-version-origin))"
+      } >&2
+      versions=("${versions[@]}" "${version#python-}")
+    else
       echo "pyenv: version \`$version' is not installed" >&2
       exit 1
     fi
-done
+  done
+}
+IFS="$OLDIFS"
 
-echo "${PYENV_VERSION}"
+OLDIFS="$IFS"
+{ IFS=:
+  echo "${versions[*]}"
+}
+IFS="$OLDIFS"

plugins/version-ext-compat/README.md

@@ -1,67 +0,0 @@
-# pyenv-version-ext
-
-pyenv-version-ext is a [pyenv](https://github.com/yyuu/pyenv) plugin
-that provides a `pyenv push` and `pyenv pop` commands to manage Python
-versions.
-
-(NOTICE:
-This project has been moved out as external plugin of pyenv.
-The version-ext-compat has left for backward compatibility, but will be removed from future release of pyenv.
-See also [pyenv-version-ext](https://github.com/yyuu/pyenv-version-ext).)
-
-## Installation
-
-### Installing as an pyenv plugin
-
-Installing pyenv-version-ext as a pyenv plugin will give you access to the
-`pyenv push` and `pyenv pop` commands.
-
-    $ git clone git://github.com/yyuu/pyenv-version-ext.git ~/.pyenv/plugins/pyenv-version-ext
-
-This will install the latest development version of pyenv-version-ext into
-the `~/.pyenv/plugins/pyenv-version-ext` directory. From that directory, you
-can check out a specific release tag. To update pyenv-version-ext, run `git
-pull` to download the latest changes.
-
-## Usage
-
-You can manage your version stack by `pyenv push` and `pyenv pop`.
-
-    $ pyenv global
-    2.7.5
-    3.2.5
-    $ pyenv push 3.3.2
-    $ pyenv global
-    2.7.5
-    3.2.5
-    3.3.2
-    $ pyenv pop
-    2.7.5
-    3.2.5
-
-The push/pop operation is also efective for local and shell versions.
-
-### License
-
-(The MIT License)
-
-* Copyright (c) 2013 Yamashita, Yuu
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

plugins/version-ext-compat/bin/pyenv-sh-pop

@@ -1,21 +0,0 @@
-#!/usr/bin/env bash
-# Usage: pyenv pop <version>
-set -e
-[ -n "$PYENV_DEBUG" ] && set -x
-
-IFS=: versions=($(pyenv-version-name))
-
-echo "WARNING: The \`pop' command will be removed from pyenv. Please install https://github.com/yyuu/pyenv-version-ext." 1>&2
-
-length="${#versions[@]}"
-PYENV_VERSION_NAMES=()
-for ((i=0; i<length-1; i++)); do
-  PYENV_VERSION_NAMES=("${PYENV_VERSION_NAMES[@]}" "${versions[$i]}")
-done
-
-if [ -n "$PYENV_VERSION" ]; then
-  IFS=: PYENV_VERSION="${PYENV_VERSION_NAMES[*]}"
-  echo "export PYENV_VERSION=\"${PYENV_VERSION}\""
-else
-  pyenv-version-file-write "$(pyenv-version-file)" "${PYENV_VERSION_NAMES[@]}"
-fi

plugins/version-ext-compat/bin/pyenv-sh-push

@@ -1,17 +0,0 @@
-#!/usr/bin/env bash
-# Usage: pyenv push <version>
-set -e
-[ -n "$PYENV_DEBUG" ] && set -x
-
-IFS=: PYENV_VERSION_NAMES=($(pyenv-version-name))
-versions=("$@")
-PYENV_VERSION_NAMES=("${PYENV_VERSION_NAMES[@]}" "${versions[@]}")
-
-echo "WARNING: The \`push' command will be removed from pyenv. Please install https://github.com/yyuu/pyenv-version-ext." 1>&2
-
-if [ -n "$PYENV_VERSION" ]; then
-  IFS=: PYENV_VERSION="${PYENV_VERSION_NAMES[*]}"
-  echo "export PYENV_VERSION=\"${PYENV_VERSION}\""
-else
-  pyenv-version-file-write "$(pyenv-version-file)" "${PYENV_VERSION_NAMES[@]}"
-fi

plugins/version-ext-compat/install.sh

@@ -1,17 +0,0 @@
-#!/bin/sh
-
-set -e
-
-if [ -z "${PREFIX}" ]; then
-  PREFIX="/usr/local"
-fi
-
-BIN_PATH="${PREFIX}/bin"
-
-mkdir -p "${BIN_PATH}"
-
-for file in bin/*; do
-  cp "${file}" "${BIN_PATH}"
-done
-
-echo "Installed pyenv-version-ext at ${PREFIX}"

test/--version.bats

@@ -0,0 +1,46 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+setup() {
+  mkdir -p "$HOME"
+  git config --global user.name  "Tester"
+  git config --global user.email "tester@test.local"
+}
+
+git_commit() {
+  git commit --quiet --allow-empty -m "empty"
+}
+
+@test "default version" {
+  assert [ ! -e "$PYENV_ROOT" ]
+  run pyenv---version
+  assert_success
+  [[ $output == "pyenv 0."* ]]
+}
+
+@test "reads version from git repo" {
+  mkdir -p "$PYENV_ROOT"
+  cd "$PYENV_ROOT"
+  git init
+  git_commit
+  git tag v0.4.1
+  git_commit
+  git_commit
+
+  cd "$PYENV_TEST_DIR"
+  run pyenv---version
+  assert_success
+  [[ $output == "pyenv 0.4.1-2-g"* ]]
+}
+
+@test "prints default version if no tags in git repo" {
+  mkdir -p "$PYENV_ROOT"
+  cd "$PYENV_ROOT"
+  git init
+  git_commit
+
+  cd "$PYENV_TEST_DIR"
+  run pyenv---version
+  [[ $output == "pyenv 0."* ]]
+}

test/commands.bats

@@ -0,0 +1,39 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+@test "commands" {
+  run pyenv-commands
+  assert_success
+  assert_line "init"
+  assert_line "rehash"
+  assert_line "shell"
+  refute_line "sh-shell"
+  assert_line "echo"
+}
+
+@test "commands --sh" {
+  run pyenv-commands --sh
+  assert_success
+  refute_line "init"
+  assert_line "shell"
+}
+
+@test "commands in path with spaces" {
+  path="${PYENV_TEST_DIR}/my commands"
+  cmd="${path}/pyenv-sh-hello"
+  mkdir -p "$path"
+  touch "$cmd"
+  chmod +x "$cmd"
+
+  PATH="${path}:$PATH" run pyenv-commands --sh
+  assert_success
+  assert_line "hello"
+}
+
+@test "commands --no-sh" {
+  run pyenv-commands --no-sh
+  assert_success
+  assert_line "init"
+  refute_line "shell"
+}

test/completions.bats

@@ -0,0 +1,46 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+create_command() {
+  bin="${PYENV_TEST_DIR}/bin"
+  mkdir -p "$bin"
+  echo "$2" > "${bin}/$1"
+  chmod +x "${bin}/$1"
+}
+
+@test "command with no completion support" {
+  create_command "pyenv-hello" "#!$BASH
+    echo hello"
+  run pyenv-completions hello
+  assert_success ""
+}
+
+@test "command with completion support" {
+  create_command "pyenv-hello" "#!$BASH
+# provide pyenv completions
+if [[ \$1 = --complete ]]; then
+  echo hello
+else
+  exit 1
+fi"
+  run pyenv-completions hello
+  assert_success "hello"
+}
+
+@test "forwards extra arguments" {
+  create_command "pyenv-hello" "#!$BASH
+# provide pyenv completions
+if [[ \$1 = --complete ]]; then
+  shift 1
+  for arg; do echo \$arg; done
+else
+  exit 1
+fi"
+  run pyenv-completions hello happy world
+  assert_success
+  assert_output <<OUT
+happy
+world
+OUT
+}

test/exec.bats

@@ -0,0 +1,113 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+create_executable() {
+  name="${1?}"
+  shift 1
+  bin="${PYENV_ROOT}/versions/${PYENV_VERSION}/bin"
+  mkdir -p "$bin"
+  { if [ $# -eq 0 ]; then cat -
+    else echo "$@"
+    fi
+  } | sed -Ee '1s/^ +//' > "${bin}/$name"
+  chmod +x "${bin}/$name"
+}
+
+@test "fails with invalid version" {
+  export PYENV_VERSION="3.4"
+  run pyenv-exec python -v
+  assert_failure "pyenv: version \`3.4' is not installed"
+}
+
+@test "completes with names of executables" {
+  export PYENV_VERSION="3.4"
+  create_executable "fab" "#!/bin/sh"
+  create_executable "python" "#!/bin/sh"
+
+  pyenv-rehash
+  run pyenv-completions exec
+  assert_success
+  assert_output <<OUT
+fab
+python
+OUT
+}
+
+@test "supports hook path with spaces" {
+  hook_path="${PYENV_TEST_DIR}/custom stuff/pyenv hooks"
+  mkdir -p "${hook_path}/exec"
+  echo "export HELLO='from hook'" > "${hook_path}/exec/hello.bash"
+
+  export PYENV_VERSION=system
+  PYENV_HOOK_PATH="$hook_path" run pyenv-exec env
+  assert_success
+  assert_line "HELLO=from hook"
+}
+
+@test "carries original IFS within hooks" {
+  hook_path="${PYENV_TEST_DIR}/pyenv.d"
+  mkdir -p "${hook_path}/exec"
+  cat > "${hook_path}/exec/hello.bash" <<SH
+hellos=(\$(printf "hello\\tugly world\\nagain"))
+echo HELLO="\$(printf ":%s" "\${hellos[@]}")"
+SH
+
+  export PYENV_VERSION=system
+  PYENV_HOOK_PATH="$hook_path" IFS=$' \t\n' run pyenv-exec env
+  assert_success
+  assert_line "HELLO=:hello:ugly:world:again"
+}
+
+@test "forwards all arguments" {
+  export PYENV_VERSION="3.4"
+  create_executable "python" <<SH
+#!$BASH
+echo \$0
+for arg; do
+  # hack to avoid bash builtin echo which can't output '-e'
+  printf "  %s\\n" "\$arg"
+done
+SH
+
+  run pyenv-exec python -w "/path to/python script.rb" -- extra args
+  assert_success
+  assert_output <<OUT
+${PYENV_ROOT}/versions/3.4/bin/python
+  -w
+  /path to/python script.rb
+  --
+  extra
+  args
+OUT
+}
+
+@test "supports python -S <cmd>" {
+  export PYENV_VERSION="3.4"
+
+  # emulate `python -S' behavior
+  create_executable "python" <<SH
+#!$BASH
+if [[ \$1 == "-S"* ]]; then
+  found="\$(PATH="\${PYTHONPATH:-\$PATH}" which \$2)"
+  # assert that the found executable has python for shebang
+  if head -1 "\$found" | grep python >/dev/null; then
+    \$BASH "\$found"
+  else
+    echo "python: no Python script found in input (LoadError)" >&2
+    exit 1
+  fi
+else
+  echo 'python 3.4 (pyenv test)'
+fi
+SH
+
+  create_executable "fab" <<SH
+#!/usr/bin/env python
+echo hello fab
+SH
+
+  pyenv-rehash
+  run python -S fab
+  assert_success "hello fab"
+}

test/global.bats

@@ -0,0 +1,31 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+@test "default" {
+  run pyenv global
+  assert_success
+  assert_output "system"
+}
+
+@test "read PYENV_ROOT/version" {
+  mkdir -p "$PYENV_ROOT"
+  echo "1.2.3" > "$PYENV_ROOT/version"
+  run pyenv-global
+  assert_success
+  assert_output "1.2.3"
+}
+
+@test "set PYENV_ROOT/version" {
+  mkdir -p "$PYENV_ROOT/versions/1.2.3"
+  run pyenv-global "1.2.3"
+  assert_success
+  run pyenv global
+  assert_success "1.2.3"
+}
+
+@test "fail setting invalid PYENV_ROOT/version" {
+  mkdir -p "$PYENV_ROOT"
+  run pyenv-global "1.2.3"
+  assert_failure "pyenv: version \`1.2.3' not installed"
+}

test/help.bats

@@ -0,0 +1,115 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+@test "without args shows summary of common commands" {
+  run pyenv-help
+  assert_success
+  assert_line "Usage: pyenv <command> [<args>]"
+  assert_line "Some useful pyenv commands are:"
+}
+
+@test "invalid command" {
+  run pyenv-help hello
+  assert_failure "pyenv: no such command \`hello'"
+}
+
+@test "shows help for a specific command" {
+  mkdir -p "${PYENV_TEST_DIR}/bin"
+  cat > "${PYENV_TEST_DIR}/bin/pyenv-hello" <<SH
+#!shebang
+# Usage: pyenv hello <world>
+# Summary: Says "hello" to you, from pyenv
+# This command is useful for saying hello.
+echo hello
+SH
+
+  run pyenv-help hello
+  assert_success
+  assert_output <<SH
+Usage: pyenv hello <world>
+
+This command is useful for saying hello.
+SH
+}
+
+@test "replaces missing extended help with summary text" {
+  mkdir -p "${PYENV_TEST_DIR}/bin"
+  cat > "${PYENV_TEST_DIR}/bin/pyenv-hello" <<SH
+#!shebang
+# Usage: pyenv hello <world>
+# Summary: Says "hello" to you, from pyenv
+echo hello
+SH
+
+  run pyenv-help hello
+  assert_success
+  assert_output <<SH
+Usage: pyenv hello <world>
+
+Says "hello" to you, from pyenv
+SH
+}
+
+@test "extracts only usage" {
+  mkdir -p "${PYENV_TEST_DIR}/bin"
+  cat > "${PYENV_TEST_DIR}/bin/pyenv-hello" <<SH
+#!shebang
+# Usage: pyenv hello <world>
+# Summary: Says "hello" to you, from pyenv
+# This extended help won't be shown.
+echo hello
+SH
+
+  run pyenv-help --usage hello
+  assert_success "Usage: pyenv hello <world>"
+}
+
+@test "multiline usage section" {
+  mkdir -p "${PYENV_TEST_DIR}/bin"
+  cat > "${PYENV_TEST_DIR}/bin/pyenv-hello" <<SH
+#!shebang
+# Usage: pyenv hello <world>
+#        pyenv hi [everybody]
+#        pyenv hola --translate
+# Summary: Says "hello" to you, from pyenv
+# Help text.
+echo hello
+SH
+
+  run pyenv-help hello
+  assert_success
+  assert_output <<SH
+Usage: pyenv hello <world>
+       pyenv hi [everybody]
+       pyenv hola --translate
+
+Help text.
+SH
+}
+
+@test "multiline extended help section" {
+  mkdir -p "${PYENV_TEST_DIR}/bin"
+  cat > "${PYENV_TEST_DIR}/bin/pyenv-hello" <<SH
+#!shebang
+# Usage: pyenv hello <world>
+# Summary: Says "hello" to you, from pyenv
+# This is extended help text.
+# It can contain multiple lines.
+#
+# And paragraphs.
+
+echo hello
+SH
+
+  run pyenv-help hello
+  assert_success
+  assert_output <<SH
+Usage: pyenv hello <world>
+
+This is extended help text.
+It can contain multiple lines.
+
+And paragraphs.
+SH
+}

test/hooks.bats

@@ -0,0 +1,65 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+create_hook() {
+  mkdir -p "$1/$2"
+  touch "$1/$2/$3"
+}
+
+@test "prints usage help given no argument" {
+  run pyenv-hooks
+  assert_failure "Usage: pyenv hooks <command>"
+}
+
+@test "prints list of hooks" {
+  path1="${PYENV_TEST_DIR}/pyenv.d"
+  path2="${PYENV_TEST_DIR}/etc/pyenv_hooks"
+  create_hook "$path1" exec "hello.bash"
+  create_hook "$path1" exec "ahoy.bash"
+  create_hook "$path1" exec "invalid.sh"
+  create_hook "$path1" which "boom.bash"
+  create_hook "$path2" exec "bueno.bash"
+
+  PYENV_HOOK_PATH="$path1:$path2" run pyenv-hooks exec
+  assert_success
+  assert_output <<OUT
+${PYENV_TEST_DIR}/pyenv.d/exec/ahoy.bash
+${PYENV_TEST_DIR}/pyenv.d/exec/hello.bash
+${PYENV_TEST_DIR}/etc/pyenv_hooks/exec/bueno.bash
+OUT
+}
+
+@test "supports hook paths with spaces" {
+  path1="${PYENV_TEST_DIR}/my hooks/pyenv.d"
+  path2="${PYENV_TEST_DIR}/etc/pyenv hooks"
+  create_hook "$path1" exec "hello.bash"
+  create_hook "$path2" exec "ahoy.bash"
+
+  PYENV_HOOK_PATH="$path1:$path2" run pyenv-hooks exec
+  assert_success
+  assert_output <<OUT
+${PYENV_TEST_DIR}/my hooks/pyenv.d/exec/hello.bash
+${PYENV_TEST_DIR}/etc/pyenv hooks/exec/ahoy.bash
+OUT
+}
+
+@test "resolves relative paths" {
+  path="${PYENV_TEST_DIR}/pyenv.d"
+  create_hook "$path" exec "hello.bash"
+  mkdir -p "$HOME"
+
+  PYENV_HOOK_PATH="${HOME}/../pyenv.d" run pyenv-hooks exec
+  assert_success "${PYENV_TEST_DIR}/pyenv.d/exec/hello.bash"
+}
+
+@test "resolves symlinks" {
+  path="${PYENV_TEST_DIR}/pyenv.d"
+  mkdir -p "${path}/exec"
+  mkdir -p "$HOME"
+  touch "${HOME}/hola.bash"
+  ln -s "../../home/hola.bash" "${path}/exec/hello.bash"
+
+  PYENV_HOOK_PATH="$path" run pyenv-hooks exec
+  assert_success "${HOME}/hola.bash"
+}

test/init.bats

@@ -0,0 +1,79 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+@test "creates shims and versions directories" {
+  assert [ ! -d "${PYENV_ROOT}/shims" ]
+  assert [ ! -d "${PYENV_ROOT}/versions" ]
+  run pyenv-init -
+  assert_success
+  assert [ -d "${PYENV_ROOT}/shims" ]
+  assert [ -d "${PYENV_ROOT}/versions" ]
+}
+
+@test "auto rehash" {
+  run pyenv-init -
+  assert_success
+  assert_line "pyenv rehash 2>/dev/null"
+}
+
+@test "setup shell completions" {
+  root="$(cd $BATS_TEST_DIRNAME/.. && pwd)"
+  run pyenv-init - bash
+  assert_success
+  assert_line "source '${root}/libexec/../completions/pyenv.bash'"
+}
+
+@test "detect parent shell" {
+  root="$(cd $BATS_TEST_DIRNAME/.. && pwd)"
+  SHELL=/bin/false run pyenv-init -
+  assert_success
+  assert_line "export PYENV_SHELL=bash"
+}
+
+@test "setup shell completions (fish)" {
+  root="$(cd $BATS_TEST_DIRNAME/.. && pwd)"
+  run pyenv-init - fish
+  assert_success
+  assert_line ". '${root}/libexec/../completions/pyenv.fish'"
+}
+
+@test "fish instructions" {
+  run pyenv-init fish
+  assert [ "$status" -eq 1 ]
+  assert_line 'status --is-interactive; and . (pyenv init -|psub)'
+}
+
+@test "option to skip rehash" {
+  run pyenv-init - --no-rehash
+  assert_success
+  refute_line "pyenv rehash 2>/dev/null"
+}
+
+@test "adds shims to PATH" {
+  export PATH="${BATS_TEST_DIRNAME}/../libexec:/usr/bin:/bin"
+  run pyenv-init - bash
+  assert_success
+  assert_line 0 'export PATH="'${PYENV_ROOT}'/shims:${PATH}"'
+}
+
+@test "adds shims to PATH (fish)" {
+  export PATH="${BATS_TEST_DIRNAME}/../libexec:/usr/bin:/bin"
+  run pyenv-init - fish
+  assert_success
+  assert_line 0 "setenv PATH '${PYENV_ROOT}/shims' \$PATH"
+}
+
+@test "doesn't add shims to PATH more than once" {
+  export PATH="${PYENV_ROOT}/shims:$PATH"
+  run pyenv-init - bash
+  assert_success
+  refute_line 'export PATH="'${PYENV_ROOT}'/shims:${PATH}"'
+}
+
+@test "doesn't add shims to PATH more than once (fish)" {
+  export PATH="${PYENV_ROOT}/shims:$PATH"
+  run pyenv-init - fish
+  assert_success
+  refute_line 'setenv PATH "'${PYENV_ROOT}'/shims" $PATH ;'
+}

test/libexec/pyenv-echo

@@ -0,0 +1,2 @@
+#!/usr/bin/env bash
+eval "echo \$$1"

test/local.bats

@@ -0,0 +1,103 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+setup() {
+  mkdir -p "${PYENV_TEST_DIR}/myproject"
+  cd "${PYENV_TEST_DIR}/myproject"
+}
+
+@test "no version" {
+  assert [ ! -e "${PWD}/.python-version" ]
+  run pyenv-local
+  assert_failure "pyenv: no local version configured for this directory"
+}
+
+@test "local version" {
+  echo "1.2.3" > .python-version
+  run pyenv-local
+  assert_success "1.2.3"
+}
+
+@test "supports legacy .pyenv-version file" {
+  echo "1.2.3" > .pyenv-version
+  run pyenv-local
+  assert_success "1.2.3"
+}
+
+@test "local .python-version has precedence over .pyenv-version" {
+  echo "2.7" > .pyenv-version
+  echo "3.4" > .python-version
+  run pyenv-local
+  assert_success "3.4"
+}
+
+@test "ignores version in parent directory" {
+  echo "1.2.3" > .python-version
+  mkdir -p "subdir" && cd "subdir"
+  run pyenv-local
+  assert_failure
+}
+
+@test "ignores PYENV_DIR" {
+  echo "1.2.3" > .python-version
+  mkdir -p "$HOME"
+  echo "3.4-home" > "${HOME}/.python-version"
+  PYENV_DIR="$HOME" run pyenv-local
+  assert_success "1.2.3"
+}
+
+@test "sets local version" {
+  mkdir -p "${PYENV_ROOT}/versions/1.2.3"
+  run pyenv-local 1.2.3
+  assert_success ""
+  assert [ "$(cat .python-version)" = "1.2.3" ]
+}
+
+@test "changes local version" {
+  echo "1.0-pre" > .python-version
+  mkdir -p "${PYENV_ROOT}/versions/1.2.3"
+  run pyenv-local
+  assert_success "1.0-pre"
+  run pyenv-local 1.2.3
+  assert_success ""
+  assert [ "$(cat .python-version)" = "1.2.3" ]
+}
+
+@test "renames .pyenv-version to .python-version" {
+  echo "2.7.6" > .pyenv-version
+  mkdir -p "${PYENV_ROOT}/versions/3.3.3"
+  run pyenv-local
+  assert_success "2.7.6"
+  run pyenv-local "3.3.3"
+  assert_success
+  assert_output <<OUT
+pyenv: removed existing \`.pyenv-version' file and migrated
+       local version specification to \`.python-version' file
+OUT
+  assert [ ! -e .pyenv-version ]
+  assert [ "$(cat .python-version)" = "3.3.3" ]
+}
+
+@test "doesn't rename .pyenv-version if changing the version failed" {
+  echo "2.7.6" > .pyenv-version
+  assert [ ! -e "${PYENV_ROOT}/versions/3.3.3" ]
+  run pyenv-local "3.3.3"
+  assert_failure "pyenv: version \`3.3.3' not installed"
+  assert [ ! -e .python-version ]
+  assert [ "$(cat .pyenv-version)" = "2.7.6" ]
+}
+
+@test "unsets local version" {
+  touch .python-version
+  run pyenv-local --unset
+  assert_success ""
+  assert [ ! -e .pyenv-version ]
+}
+
+@test "unsets alternate version file" {
+  touch .pyenv-version
+  run pyenv-local --unset
+  assert_success ""
+  assert [ ! -e .pyenv-version ]
+}

test/prefix.bats

@@ -0,0 +1,39 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+@test "prefix" {
+  mkdir -p "${PYENV_TEST_DIR}/myproject"
+  cd "${PYENV_TEST_DIR}/myproject"
+  echo "1.2.3" > .python-version
+  mkdir -p "${PYENV_ROOT}/versions/1.2.3"
+  run pyenv-prefix
+  assert_success "${PYENV_ROOT}/versions/1.2.3"
+}
+
+@test "prefix for invalid version" {
+  PYENV_VERSION="1.2.3" run pyenv-prefix
+  assert_failure "pyenv: version \`1.2.3' not installed"
+}
+
+@test "prefix for system" {
+  mkdir -p "${PYENV_TEST_DIR}/bin"
+  touch "${PYENV_TEST_DIR}/bin/python"
+  chmod +x "${PYENV_TEST_DIR}/bin/python"
+  PYENV_VERSION="system" run pyenv-prefix
+  assert_success "$PYENV_TEST_DIR"
+}
+
+@test "prefix for invalid system" {
+  USRBIN_ALT="${PYENV_TEST_DIR}/usr-bin-alt"
+  mkdir -p "$USRBIN_ALT"
+  for util in head readlink greadlink; do
+    if [ -x "/usr/bin/$util" ]; then
+      ln -s "/usr/bin/$util" "${USRBIN_ALT}/$util"
+    fi
+  done
+  PATH_WITHOUT_PYTHON="${PATH/\/usr\/bin:/$USRBIN_ALT:}"
+
+  PATH="$PATH_WITHOUT_PYTHON" run pyenv-prefix system
+  assert_failure "pyenv: system version not found in PATH"
+}

test/pyenv.bats

@@ -0,0 +1,47 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+@test "blank invocation" {
+  run pyenv
+  assert_success
+  assert [ "${lines[0]}" == "pyenv 0.4.0-20131217" ]
+}
+
+@test "invalid command" {
+  run pyenv does-not-exist
+  assert_failure
+  assert_output "pyenv: no such command \`does-not-exist'"
+}
+
+@test "default PYENV_ROOT" {
+  PYENV_ROOT="" HOME=/home/mislav run pyenv root
+  assert_success
+  assert_output "/home/mislav/.pyenv"
+}
+
+@test "inherited PYENV_ROOT" {
+  PYENV_ROOT=/opt/pyenv run pyenv root
+  assert_success
+  assert_output "/opt/pyenv"
+}
+
+@test "default PYENV_DIR" {
+  run pyenv echo PYENV_DIR
+  assert_output "$(pwd)"
+}
+
+@test "inherited PYENV_DIR" {
+  dir="${BATS_TMPDIR}/myproject"
+  mkdir -p "$dir"
+  PYENV_DIR="$dir" run pyenv echo PYENV_DIR
+  assert_output "$dir"
+}
+
+@test "invalid PYENV_DIR" {
+  dir="${BATS_TMPDIR}/does-not-exist"
+  assert [ ! -d "$dir" ]
+  PYENV_DIR="$dir" run pyenv echo PYENV_DIR
+  assert_failure
+  assert_output "pyenv: cannot change working directory to \`$dir'"
+}

test/rehash.bats

@@ -0,0 +1,114 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+create_executable() {
+  local bin="${PYENV_ROOT}/versions/${1}/bin"
+  mkdir -p "$bin"
+  touch "${bin}/$2"
+  chmod +x "${bin}/$2"
+}
+
+@test "empty rehash" {
+  assert [ ! -d "${PYENV_ROOT}/shims" ]
+  run pyenv-rehash
+  assert_success ""
+  assert [ -d "${PYENV_ROOT}/shims" ]
+  rmdir "${PYENV_ROOT}/shims"
+}
+
+@test "non-writable shims directory" {
+  mkdir -p "${PYENV_ROOT}/shims"
+  chmod -w "${PYENV_ROOT}/shims"
+  run pyenv-rehash
+  assert_failure "pyenv: cannot rehash: ${PYENV_ROOT}/shims isn't writable"
+}
+
+@test "rehash in progress" {
+  mkdir -p "${PYENV_ROOT}/shims"
+  touch "${PYENV_ROOT}/shims/.pyenv-shim"
+  run pyenv-rehash
+  assert_failure "pyenv: cannot rehash: ${PYENV_ROOT}/shims/.pyenv-shim exists"
+}
+
+@test "creates shims" {
+  create_executable "2.7" "python"
+  create_executable "2.7" "fab"
+  create_executable "3.4" "python"
+  create_executable "3.4" "py.test"
+
+  assert [ ! -e "${PYENV_ROOT}/shims/fab" ]
+  assert [ ! -e "${PYENV_ROOT}/shims/python" ]
+  assert [ ! -e "${PYENV_ROOT}/shims/py.test" ]
+
+  run pyenv-rehash
+  assert_success ""
+
+  run ls "${PYENV_ROOT}/shims"
+  assert_success
+  assert_output <<OUT
+fab
+py.test
+python
+OUT
+}
+
+@test "removes stale shims" {
+  mkdir -p "${PYENV_ROOT}/shims"
+  touch "${PYENV_ROOT}/shims/oldshim1"
+  chmod +x "${PYENV_ROOT}/shims/oldshim1"
+
+  create_executable "3.4" "fab"
+  create_executable "3.4" "python"
+
+  run pyenv-rehash
+  assert_success ""
+
+  assert [ ! -e "${PYENV_ROOT}/shims/oldshim1" ]
+}
+
+@test "binary install locations containing spaces" {
+  create_executable "dirname1 p247" "python"
+  create_executable "dirname2 preview1" "py.test"
+
+  assert [ ! -e "${PYENV_ROOT}/shims/python" ]
+  assert [ ! -e "${PYENV_ROOT}/shims/py.test" ]
+
+  run pyenv-rehash
+  assert_success ""
+
+  run ls "${PYENV_ROOT}/shims"
+  assert_success
+  assert_output <<OUT
+py.test
+python
+OUT
+}
+
+@test "carries original IFS within hooks" {
+  hook_path="${PYENV_TEST_DIR}/pyenv.d"
+  mkdir -p "${hook_path}/rehash"
+  cat > "${hook_path}/rehash/hello.bash" <<SH
+hellos=(\$(printf "hello\\tugly world\\nagain"))
+echo HELLO="\$(printf ":%s" "\${hellos[@]}")"
+exit
+SH
+
+  PYENV_HOOK_PATH="$hook_path" IFS=$' \t\n' run pyenv-rehash
+  assert_success
+  assert_output "HELLO=:hello:ugly:world:again"
+}
+
+@test "sh-rehash in bash" {
+  create_executable "3.4" "python"
+  PYENV_SHELL=bash run pyenv-sh-rehash
+  assert_success "hash -r 2>/dev/null || true"
+  assert [ -x "${PYENV_ROOT}/shims/python" ]
+}
+
+@test "sh-rehash in fish" {
+  create_executable "3.4" "python"
+  PYENV_SHELL=fish run pyenv-sh-rehash
+  assert_success ""
+  assert [ -x "${PYENV_ROOT}/shims/python" ]
+}

test/shell.bats

@@ -0,0 +1,52 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+@test "no shell version" {
+  mkdir -p "${PYENV_TEST_DIR}/myproject"
+  cd "${PYENV_TEST_DIR}/myproject"
+  echo "1.2.3" > .python-version
+  PYENV_VERSION="" run pyenv-sh-shell
+  assert_failure "pyenv: no shell-specific version configured"
+}
+
+@test "shell version" {
+  PYENV_SHELL=bash PYENV_VERSION="1.2.3" run pyenv-sh-shell
+  assert_success 'echo "$PYENV_VERSION"'
+}
+
+@test "shell version (fish)" {
+  PYENV_SHELL=fish PYENV_VERSION="1.2.3" run pyenv-sh-shell
+  assert_success 'echo "$PYENV_VERSION"'
+}
+
+@test "shell unset" {
+  PYENV_SHELL=bash run pyenv-sh-shell --unset
+  assert_success "unset PYENV_VERSION"
+}
+
+@test "shell unset (fish)" {
+  PYENV_SHELL=fish run pyenv-sh-shell --unset
+  assert_success "set -e PYENV_VERSION"
+}
+
+@test "shell change invalid version" {
+  run pyenv-sh-shell 1.2.3
+  assert_failure
+  assert_output <<SH
+pyenv: version \`1.2.3' not installed
+false
+SH
+}
+
+@test "shell change version" {
+  mkdir -p "${PYENV_ROOT}/versions/1.2.3"
+  PYENV_SHELL=bash run pyenv-sh-shell 1.2.3
+  assert_success 'export PYENV_VERSION="1.2.3"'
+}
+
+@test "shell change version (fish)" {
+  mkdir -p "${PYENV_ROOT}/versions/1.2.3"
+  PYENV_SHELL=fish run pyenv-sh-shell 1.2.3
+  assert_success 'setenv PYENV_VERSION "1.2.3"'
+}

test/shims.bats

@@ -0,0 +1,29 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+@test "no shims" {
+  run pyenv-shims
+  assert_success
+  assert [ -z "$output" ]
+}
+
+@test "shims" {
+  mkdir -p "${PYENV_ROOT}/shims"
+  touch "${PYENV_ROOT}/shims/python"
+  touch "${PYENV_ROOT}/shims/irb"
+  run pyenv-shims
+  assert_success
+  assert_line "${PYENV_ROOT}/shims/python"
+  assert_line "${PYENV_ROOT}/shims/irb"
+}
+
+@test "shims --short" {
+  mkdir -p "${PYENV_ROOT}/shims"
+  touch "${PYENV_ROOT}/shims/python"
+  touch "${PYENV_ROOT}/shims/irb"
+  run pyenv-shims --short
+  assert_success
+  assert_line "irb"
+  assert_line "python"
+}

test/test_helper.bash

@@ -0,0 +1,95 @@
+unset PYENV_VERSION
+unset PYENV_DIR
+
+PYENV_TEST_DIR="${BATS_TMPDIR}/pyenv"
+
+# guard against executing this block twice due to bats internals
+if [ "$PYENV_ROOT" != "${PYENV_TEST_DIR}/root" ]; then
+  export PYENV_ROOT="${PYENV_TEST_DIR}/root"
+  export HOME="${PYENV_TEST_DIR}/home"
+
+  PATH=/usr/bin:/bin:/usr/sbin:/sbin
+  PATH="${PYENV_TEST_DIR}/bin:$PATH"
+  PATH="${BATS_TEST_DIRNAME}/../libexec:$PATH"
+  PATH="${BATS_TEST_DIRNAME}/libexec:$PATH"
+  PATH="${PYENV_ROOT}/shims:$PATH"
+  export PATH
+fi
+
+teardown() {
+  rm -rf "$PYENV_TEST_DIR"
+}
+
+flunk() {
+  { if [ "$#" -eq 0 ]; then cat -
+    else echo "$@"
+    fi
+  } | sed "s:${PYENV_TEST_DIR}:TEST_DIR:g" >&2
+  return 1
+}
+
+assert_success() {
+  if [ "$status" -ne 0 ]; then
+    flunk "command failed with exit status $status"
+  elif [ "$#" -gt 0 ]; then
+    assert_output "$1"
+  fi
+}
+
+assert_failure() {
+  if [ "$status" -eq 0 ]; then
+    flunk "expected failed exit status"
+  elif [ "$#" -gt 0 ]; then
+    assert_output "$1"
+  fi
+}
+
+assert_equal() {
+  if [ "$1" != "$2" ]; then
+    { echo "expected: $1"
+      echo "actual:   $2"
+    } | flunk
+  fi
+}
+
+assert_output() {
+  local expected
+  if [ $# -eq 0 ]; then expected="$(cat -)"
+  else expected="$1"
+  fi
+  assert_equal "$expected" "$output"
+}
+
+assert_line() {
+  if [ "$1" -ge 0 ] 2>/dev/null; then
+    assert_equal "$2" "${lines[$1]}"
+  else
+    local line
+    for line in "${lines[@]}"; do
+      if [ "$line" = "$1" ]; then return 0; fi
+    done
+    flunk "expected line \`$1'"
+  fi
+}
+
+refute_line() {
+  if [ "$1" -ge 0 ] 2>/dev/null; then
+    local num_lines="${#lines[@]}"
+    if [ "$1" -lt "$num_lines" ]; then
+      flunk "output has $num_lines lines"
+    fi
+  else
+    local line
+    for line in "${lines[@]}"; do
+      if [ "$line" = "$1" ]; then
+        flunk "expected to not find line \`$line'"
+      fi
+    done
+  fi
+}
+
+assert() {
+  if ! "$@"; then
+    flunk "failed: $@"
+  fi
+}

test/version-file-read.bats

@@ -0,0 +1,66 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+setup() {
+  mkdir -p "${PYENV_TEST_DIR}/myproject"
+  cd "${PYENV_TEST_DIR}/myproject"
+}
+
+@test "fails without arguments" {
+  run pyenv-version-file-read
+  assert_failure ""
+}
+
+@test "fails for invalid file" {
+  run pyenv-version-file-read "non-existent"
+  assert_failure ""
+}
+
+@test "fails for blank file" {
+  echo > my-version
+  run pyenv-version-file-read my-version
+  assert_failure ""
+}
+
+@test "reads simple version file" {
+  cat > my-version <<<"3.3.3"
+  run pyenv-version-file-read my-version
+  assert_success "3.3.3"
+}
+
+@test "ignores leading spaces" {
+  cat > my-version <<<"  3.3.3"
+  run pyenv-version-file-read my-version
+  assert_success "3.3.3"
+}
+
+@test "reads only the first word from file" {
+  cat > my-version <<<"3.3.3-p194@tag 2.7.6 hi"
+  run pyenv-version-file-read my-version
+  assert_success "3.3.3-p194@tag:2.7.6:hi"
+}
+
+@test "loads only the first line in file" {
+  cat > my-version <<IN
+2.7.6 one
+3.3.3 two
+IN
+  run pyenv-version-file-read my-version
+  assert_success "2.7.6:one:3.3.3:two"
+}
+
+@test "ignores leading blank lines" {
+  cat > my-version <<IN
+
+3.3.3
+IN
+  run pyenv-version-file-read my-version
+  assert_success "3.3.3"
+}
+
+@test "handles the file with no trailing newline" {
+  echo -n "2.7.6" > my-version
+  run pyenv-version-file-read my-version
+  assert_success "2.7.6"
+}

test/version-file-write.bats

@@ -0,0 +1,30 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+setup() {
+  mkdir -p "$PYENV_TEST_DIR"
+  cd "$PYENV_TEST_DIR"
+}
+
+@test "invocation without 2 arguments prints usage" {
+  run pyenv-version-file-write
+  assert_failure "Usage: pyenv version-file-write <file> <version>"
+  run pyenv-version-file-write "one" ""
+  assert_failure
+}
+
+@test "setting nonexistent version fails" {
+  assert [ ! -e ".python-version" ]
+  run pyenv-version-file-write ".python-version" "2.7.6"
+  assert_failure "pyenv: version \`2.7.6' not installed"
+  assert [ ! -e ".python-version" ]
+}
+
+@test "writes value to arbitrary file" {
+  mkdir -p "${PYENV_ROOT}/versions/2.7.6"
+  assert [ ! -e "my-version" ]
+  run pyenv-version-file-write "${PWD}/my-version" "2.7.6"
+  assert_success ""
+  assert [ "$(cat my-version)" = "2.7.6" ]
+}

test/version-file.bats

@@ -0,0 +1,99 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+setup() {
+  mkdir -p "$PYENV_TEST_DIR"
+  cd "$PYENV_TEST_DIR"
+}
+
+create_file() {
+  mkdir -p "$(dirname "$1")"
+  touch "$1"
+}
+
+@test "prints global file if no version files exist" {
+  assert [ ! -e "${PYENV_ROOT}/version" ]
+  assert [ ! -e ".python-version" ]
+  run pyenv-version-file
+  assert_success "${PYENV_ROOT}/version"
+}
+
+@test "detects 'global' file" {
+  create_file "${PYENV_ROOT}/global"
+  run pyenv-version-file
+  assert_success "${PYENV_ROOT}/global"
+}
+
+@test "detects 'default' file" {
+  create_file "${PYENV_ROOT}/default"
+  run pyenv-version-file
+  assert_success "${PYENV_ROOT}/default"
+}
+
+@test "'version' has precedence over 'global' and 'default'" {
+  create_file "${PYENV_ROOT}/version"
+  create_file "${PYENV_ROOT}/global"
+  create_file "${PYENV_ROOT}/default"
+  run pyenv-version-file
+  assert_success "${PYENV_ROOT}/version"
+}
+
+@test "in current directory" {
+  create_file ".python-version"
+  run pyenv-version-file
+  assert_success "${PYENV_TEST_DIR}/.python-version"
+}
+
+@test "legacy file in current directory" {
+  create_file ".pyenv-version"
+  run pyenv-version-file
+  assert_success "${PYENV_TEST_DIR}/.pyenv-version"
+}
+
+@test ".python-version has precedence over legacy file" {
+  create_file ".python-version"
+  create_file ".pyenv-version"
+  run pyenv-version-file
+  assert_success "${PYENV_TEST_DIR}/.python-version"
+}
+
+@test "in parent directory" {
+  create_file ".python-version"
+  mkdir -p project
+  cd project
+  run pyenv-version-file
+  assert_success "${PYENV_TEST_DIR}/.python-version"
+}
+
+@test "topmost file has precedence" {
+  create_file ".python-version"
+  create_file "project/.python-version"
+  cd project
+  run pyenv-version-file
+  assert_success "${PYENV_TEST_DIR}/project/.python-version"
+}
+
+@test "legacy file has precedence if higher" {
+  create_file ".python-version"
+  create_file "project/.pyenv-version"
+  cd project
+  run pyenv-version-file
+  assert_success "${PYENV_TEST_DIR}/project/.pyenv-version"
+}
+
+@test "PYENV_DIR has precedence over PWD" {
+  create_file "widget/.python-version"
+  create_file "project/.python-version"
+  cd project
+  PYENV_DIR="${PYENV_TEST_DIR}/widget" run pyenv-version-file
+  assert_success "${PYENV_TEST_DIR}/widget/.python-version"
+}
+
+@test "PWD is searched if PYENV_DIR yields no results" {
+  mkdir -p "widget/blank"
+  create_file "project/.python-version"
+  cd project
+  PYENV_DIR="${PYENV_TEST_DIR}/widget/blank" run pyenv-version-file
+  assert_success "${PYENV_TEST_DIR}/project/.python-version"
+}

test/version-name.bats

@@ -0,0 +1,65 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+create_version() {
+  mkdir -p "${PYENV_ROOT}/versions/$1"
+}
+
+setup() {
+  mkdir -p "$PYENV_TEST_DIR"
+  cd "$PYENV_TEST_DIR"
+}
+
+@test "no version selected" {
+  assert [ ! -d "${PYENV_ROOT}/versions" ]
+  run pyenv-version-name
+  assert_success "system"
+}
+
+@test "system version is not checked for existance" {
+  PYENV_VERSION=system run pyenv-version-name
+  assert_success "system"
+}
+
+@test "PYENV_VERSION has precedence over local" {
+  create_version "2.7.6"
+  create_version "3.3.3"
+
+  cat > ".python-version" <<<"2.7.6"
+  run pyenv-version-name
+  assert_success "2.7.6"
+
+  PYENV_VERSION=3.3.3 run pyenv-version-name
+  assert_success "3.3.3"
+}
+
+@test "local file has precedence over global" {
+  create_version "2.7.6"
+  create_version "3.3.3"
+
+  cat > "${PYENV_ROOT}/version" <<<"2.7.6"
+  run pyenv-version-name
+  assert_success "2.7.6"
+
+  cat > ".python-version" <<<"3.3.3"
+  run pyenv-version-name
+  assert_success "3.3.3"
+}
+
+@test "missing version" {
+  PYENV_VERSION=1.2 run pyenv-version-name
+  assert_failure "pyenv: version \`1.2' is not installed"
+}
+
+@test "version with prefix in name" {
+  create_version "2.7.6"
+  cat > ".python-version" <<<"python-2.7.6"
+  run pyenv-version-name
+  assert_success
+  assert_output <<OUT
+warning: ignoring extraneous \`python-' prefix in version \`python-2.7.6'
+         (set by ${PWD}/.python-version)
+2.7.6
+OUT
+}

test/version-origin.bats

@@ -0,0 +1,38 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+setup() {
+  mkdir -p "$PYENV_TEST_DIR"
+  cd "$PYENV_TEST_DIR"
+}
+
+@test "reports global file even if it doesn't exist" {
+  assert [ ! -e "${PYENV_ROOT}/version" ]
+  run pyenv-version-origin
+  assert_success "${PYENV_ROOT}/version"
+}
+
+@test "detects global file" {
+  mkdir -p "$PYENV_ROOT"
+  touch "${PYENV_ROOT}/version"
+  run pyenv-version-origin
+  assert_success "${PYENV_ROOT}/version"
+}
+
+@test "detects PYENV_VERSION" {
+  PYENV_VERSION=1 run pyenv-version-origin
+  assert_success "PYENV_VERSION environment variable"
+}
+
+@test "detects local file" {
+  touch .python-version
+  run pyenv-version-origin
+  assert_success "${PWD}/.python-version"
+}
+
+@test "detects alternate version file" {
+  touch .pyenv-version
+  run pyenv-version-origin
+  assert_success "${PWD}/.pyenv-version"
+}

test/version.bats

@@ -0,0 +1,38 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+create_version() {
+  mkdir -p "${PYENV_ROOT}/versions/$1"
+}
+
+setup() {
+  mkdir -p "$PYENV_TEST_DIR"
+  cd "$PYENV_TEST_DIR"
+}
+
+@test "no version selected" {
+  assert [ ! -d "${PYENV_ROOT}/versions" ]
+  run pyenv-version
+  assert_success "system (set by ${PYENV_ROOT}/version)"
+}
+
+@test "set by PYENV_VERSION" {
+  create_version "3.3.3"
+  PYENV_VERSION=3.3.3 run pyenv-version
+  assert_success "3.3.3 (set by PYENV_VERSION environment variable)"
+}
+
+@test "set by local file" {
+  create_version "3.3.3"
+  cat > ".python-version" <<<"3.3.3"
+  run pyenv-version
+  assert_success "3.3.3 (set by ${PWD}/.python-version)"
+}
+
+@test "set by global file" {
+  create_version "3.3.3"
+  cat > "${PYENV_ROOT}/version" <<<"3.3.3"
+  run pyenv-version
+  assert_success "3.3.3 (set by ${PYENV_ROOT}/version)"
+}

test/versions.bats

@@ -0,0 +1,115 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+create_version() {
+  mkdir -p "${PYENV_ROOT}/versions/$1"
+}
+
+setup() {
+  mkdir -p "$PYENV_TEST_DIR"
+  cd "$PYENV_TEST_DIR"
+}
+
+stub_system_python() {
+  local stub="${PYENV_TEST_DIR}/bin/python"
+  mkdir -p "$(dirname "$stub")"
+  touch "$stub" && chmod +x "$stub"
+}
+
+@test "no versions installed" {
+  stub_system_python
+  assert [ ! -d "${PYENV_ROOT}/versions" ]
+  run pyenv-versions
+  assert_success "* system (set by ${PYENV_ROOT}/version)"
+}
+
+@test "bare output no versions installed" {
+  assert [ ! -d "${PYENV_ROOT}/versions" ]
+  run pyenv-versions --bare
+  assert_success ""
+}
+
+@test "single version installed" {
+  stub_system_python
+  create_version "3.3"
+  run pyenv-versions
+  assert_success
+  assert_output <<OUT
+* system (set by ${PYENV_ROOT}/version)
+  3.3
+OUT
+}
+
+@test "single version bare" {
+  create_version "3.3"
+  run pyenv-versions --bare
+  assert_success "3.3"
+}
+
+@test "multiple versions" {
+  stub_system_python
+  create_version "2.7.6"
+  create_version "3.3.3"
+  create_version "3.4.0"
+  run pyenv-versions
+  assert_success
+  assert_output <<OUT
+* system (set by ${PYENV_ROOT}/version)
+  2.7.6
+  3.3.3
+  3.4.0
+OUT
+}
+
+@test "indicates current version" {
+  stub_system_python
+  create_version "3.3.3"
+  create_version "3.4.0"
+  PYENV_VERSION=3.3.3 run pyenv-versions
+  assert_success
+  assert_output <<OUT
+  system
+* 3.3.3 (set by PYENV_VERSION environment variable)
+  3.4.0
+OUT
+}
+
+@test "bare doesn't indicate current version" {
+  create_version "3.3.3"
+  create_version "3.4.0"
+  PYENV_VERSION=3.3.3 run pyenv-versions --bare
+  assert_success
+  assert_output <<OUT
+3.3.3
+3.4.0
+OUT
+}
+
+@test "globally selected version" {
+  stub_system_python
+  create_version "3.3.3"
+  create_version "3.4.0"
+  cat > "${PYENV_ROOT}/version" <<<"3.3.3"
+  run pyenv-versions
+  assert_success
+  assert_output <<OUT
+  system
+* 3.3.3 (set by ${PYENV_ROOT}/version)
+  3.4.0
+OUT
+}
+
+@test "per-project version" {
+  stub_system_python
+  create_version "3.3.3"
+  create_version "3.4.0"
+  cat > ".python-version" <<<"3.3.3"
+  run pyenv-versions
+  assert_success
+  assert_output <<OUT
+  system
+* 3.3.3 (set by ${PYENV_TEST_DIR}/.python-version)
+  3.4.0
+OUT
+}

test/whence.bats

@@ -0,0 +1,30 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+create_executable() {
+  local bin="${PYENV_ROOT}/versions/${1}/bin"
+  mkdir -p "$bin"
+  touch "${bin}/$2"
+  chmod +x "${bin}/$2"
+}
+
+@test "finds versions where present" {
+  create_executable "2.7" "python"
+  create_executable "2.7" "fab"
+  create_executable "3.4" "python"
+  create_executable "3.4" "py.test"
+
+  run pyenv-whence python
+  assert_success
+  assert_output <<OUT
+2.7
+3.4
+OUT
+
+  run pyenv-whence fab
+  assert_success "2.7"
+
+  run pyenv-whence py.test
+  assert_success "3.4"
+}

test/which.bats

@@ -0,0 +1,74 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+create_executable() {
+  local bin
+  if [[ $1 == */* ]]; then bin="$1"
+  else bin="${PYENV_ROOT}/versions/${1}/bin"
+  fi
+  mkdir -p "$bin"
+  touch "${bin}/$2"
+  chmod +x "${bin}/$2"
+}
+
+@test "outputs path to executable" {
+  create_executable "2.7" "python"
+  create_executable "3.4" "py.test"
+
+  PYENV_VERSION=2.7 run pyenv-which python
+  assert_success "${PYENV_ROOT}/versions/2.7/bin/python"
+
+  PYENV_VERSION=3.4 run pyenv-which py.test
+  assert_success "${PYENV_ROOT}/versions/3.4/bin/py.test"
+}
+
+@test "searches PATH for system version" {
+  create_executable "${PYENV_TEST_DIR}/bin" "kill-all-humans"
+  create_executable "${PYENV_ROOT}/shims" "kill-all-humans"
+
+  PYENV_VERSION=system run pyenv-which kill-all-humans
+  assert_success "${PYENV_TEST_DIR}/bin/kill-all-humans"
+}
+
+@test "version not installed" {
+  create_executable "3.4" "py.test"
+  PYENV_VERSION=3.3 run pyenv-which py.test
+  assert_failure "pyenv: version \`3.3' is not installed"
+}
+
+@test "no executable found" {
+  create_executable "2.7" "py.test"
+  PYENV_VERSION=2.7 run pyenv-which fab
+  assert_failure "pyenv: fab: command not found"
+}
+
+@test "executable found in other versions" {
+  create_executable "2.7" "python"
+  create_executable "3.3" "py.test"
+  create_executable "3.4" "py.test"
+
+  PYENV_VERSION=2.7 run pyenv-which py.test
+  assert_failure
+  assert_output <<OUT
+pyenv: py.test: command not found
+
+The \`py.test' command exists in these Python versions:
+  3.3
+  3.4
+OUT
+}
+
+@test "carries original IFS within hooks" {
+  hook_path="${PYENV_TEST_DIR}/pyenv.d"
+  mkdir -p "${hook_path}/which"
+  cat > "${hook_path}/which/hello.bash" <<SH
+hellos=(\$(printf "hello\\tugly world\\nagain"))
+echo HELLO="\$(printf ":%s" "\${hellos[@]}")"
+exit
+SH
+
+  PYENV_HOOK_PATH="$hook_path" IFS=$' \t\n' run pyenv-which anything
+  assert_success
+  assert_output "HELLO=:hello:ugly:world:again"
+}