Import tests from rbenv with sed -e s/rbenv/pyenv/g

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}/$2"
+}
+
+@test "outputs path to executable" {
+  create_executable "1.8" "python"
+  create_executable "2.0" "rspec"
+
+  PYENV_VERSION=1.8 run pyenv-which python
+  assert_success "${PYENV_ROOT}/versions/1.8/bin/python"
+
+  PYENV_VERSION=2.0 run pyenv-which rspec
+  assert_success "${PYENV_ROOT}/versions/2.0/bin/rspec"
+}
+
+@test "searches PATH for system version" {
+  create_executable "${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 "2.0" "rspec"
+  PYENV_VERSION=1.9 run pyenv-which rspec
+  assert_failure "pyenv: version \`1.9' is not installed"
+}
+
+@test "no executable found" {
+  create_executable "1.8" "rspec"
+  PYENV_VERSION=1.8 run pyenv-which rake
+  assert_failure "pyenv: rake: command not found"
+}
+
+@test "executable found in other versions" {
+  create_executable "1.8" "python"
+  create_executable "1.9" "rspec"
+  create_executable "2.0" "rspec"
+
+  PYENV_VERSION=1.8 run pyenv-which rspec
+  assert_failure
+  assert_output <<OUT
+pyenv: rspec: command not found
+
+The \`rspec' command exists in these Python versions:
+  1.9
+  2.0
+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"
+}