[PATCH 1/2 v2] test-lib: mark function variables as local

Tomi Ollila tomi.ollila at iki.fi
Sat May 9 00:09:36 PDT 2020


On Fri, May 08 2020, Daniel Kahn Gillmor wrote:

> Several functions in test/test-lib.sh used variable names that are
> also used outside of those functions (e.g. $output and $expected are
> used in many of the test scripts), but they are not expected to
> communicate via those variables.
>
> We mark those variables "local" within test-lib.sh so that they do not
> get clobbered when used outside test-lib.
>
> We also move the local variable declarations to beginning of each
> function, to avoid weird gotchas with local variable declarations as
> described in https://tldp.org/LDP/abs/html/localvar.html.

LGTM. I have to tolerate 'we' (passive) as I seem to use those myself, too
(although communicating a bit different thing...) =D

Tomi

> Signed-off-by: Daniel Kahn Gillmor <dkg at fifthhorseman.net>
> ---
>  test/test-lib.sh | 31 ++++++++++++++++++++++---------
>  1 file changed, 22 insertions(+), 9 deletions(-)
>
> diff --git a/test/test-lib.sh b/test/test-lib.sh
> index 5c8eab7c..58972339 100644
> --- a/test/test-lib.sh
> +++ b/test/test-lib.sh
> @@ -109,7 +109,6 @@ unset ALTERNATE_EDITOR
>  
>  add_gnupg_home ()
>  {
> -    local output
>      [ -e "${GNUPGHOME}/gpg.conf" ] && return
>      _gnupg_exit () { gpgconf --kill all 2>/dev/null || true; }
>      at_exit_function _gnupg_exit
> @@ -345,13 +344,14 @@ trap 'trap_signal' HUP INT TERM
>  # to the message and encrypting/signing.
>  emacs_deliver_message ()
>  {
> -    local subject="$1"
> -    local body="$2"
> +    local subject body smtp_dummy_pid smtp_dummy_port
> +    subject="$1"
> +    body="$2"
>      shift 2
>      # before we can send a message, we have to prepare the FCC maildir
>      mkdir -p "$MAIL_DIR"/sent/{cur,new,tmp}
>      # eval'ing smtp-dummy --background will set smtp_dummy_pid and -_port
> -    local smtp_dummy_pid= smtp_dummy_port=
> +    smtp_dummy_pid= smtp_dummy_port=
>      eval `$TEST_DIRECTORY/smtp-dummy --background sent_message`
>      test -n "$smtp_dummy_pid" || return 1
>      test -n "$smtp_dummy_port" || return 1
> @@ -391,13 +391,14 @@ emacs_deliver_message ()
>  # new" after message delivery
>  emacs_fcc_message ()
>  {
> -    local nmn_args=''
> +    local nmn_args subject body
> +    nmn_args=''
>      while [[ "$1" =~ ^-- ]]; do
>          nmn_args="$nmn_args $1"
>          shift
>      done
> -    local subject="$1"
> -    local body="$2"
> +    subject="$1"
> +    body="$2"
>      shift 2
>      # before we can send a message, we have to prepare the FCC maildir
>      mkdir -p "$MAIL_DIR"/sent/{cur,new,tmp}
> @@ -427,6 +428,7 @@ emacs_fcc_message ()
>  # number of messages.
>  add_email_corpus ()
>  {
> +    local corpus
>      corpus=${1:-default}
>  
>      rm -rf ${MAIL_DIR}
> @@ -457,6 +459,7 @@ test_begin_subtest ()
>  # name.
>  test_expect_equal ()
>  {
> +	local output expected testname
>  	exec 1>&6 2>&7		# Restore stdout and stderr
>  	if [ -z "$inside_subtest" ]; then
>  		error "bug in the test script: test_expect_equal without test_begin_subtest"
> @@ -483,6 +486,7 @@ test_expect_equal ()
>  # Like test_expect_equal, but takes two filenames.
>  test_expect_equal_file ()
>  {
> +	local file1 file2 testname basename1 basename2
>  	exec 1>&6 2>&7		# Restore stdout and stderr
>  	if [ -z "$inside_subtest" ]; then
>  		error "bug in the test script: test_expect_equal_file without test_begin_subtest"
> @@ -512,10 +516,11 @@ test_expect_equal_file ()
>  # canonicalized before diff'ing.  If an argument cannot be parsed, it
>  # is used unchanged so that there's something to diff against.
>  test_expect_equal_json () {
> +    local script output expected
>      # The test suite forces LC_ALL=C, but this causes Python 3 to
>      # decode stdin as ASCII.  We need to read JSON in UTF-8, so
>      # override Python's stdio encoding defaults.
> -    local script='import json, sys; json.dump(json.load(sys.stdin), sys.stdout, sort_keys=True, indent=4)'
> +    script='import json, sys; json.dump(json.load(sys.stdin), sys.stdout, sort_keys=True, indent=4)'
>      output=$(echo "$1" | PYTHONIOENCODING=utf-8 $NOTMUCH_PYTHON -c "$script" \
>          || echo "$1")
>      expected=$(echo "$2" | PYTHONIOENCODING=utf-8 $NOTMUCH_PYTHON -c "$script" \
> @@ -540,6 +545,7 @@ test_sort_json () {
>  # read the source of test/json_check_nodes.py (or the output when
>  # invoking it without arguments) for an explanation of the syntax.
>  test_json_nodes () {
> +        local output
>          exec 1>&6 2>&7		# Restore stdout and stderr
>  	if [ -z "$inside_subtest" ]; then
>  		error "bug in the test script: test_json_eval without test_begin_subtest"
> @@ -561,6 +567,7 @@ test_json_nodes () {
>  }
>  
>  test_emacs_expect_t () {
> +	local result
>  	test "$#" = 1 ||
>  	error "bug in the test script: not 1 parameter to test_emacs_expect_t"
>  	if [ -z "$inside_subtest" ]; then
> @@ -653,7 +660,8 @@ notmuch_json_show_sanitize ()
>  
>  notmuch_emacs_error_sanitize ()
>  {
> -    local command=$1
> +    local command
> +    command=$1
>      shift
>      for file in "$@"; do
>  	echo "=== $file ==="
> @@ -717,6 +725,7 @@ declare -A test_subtest_missing_external_prereq_
>  
>  # declare prerequisite for the given external binary
>  test_declare_external_prereq () {
> +	local binary
>  	binary="$1"
>  	test "$#" = 2 && name=$2 || name="$binary(1)"
>  
> @@ -734,6 +743,7 @@ $binary () {
>  # called indirectly (e.g. from emacs).
>  # Returns success if dependency is available, failure otherwise.
>  test_require_external_prereq () {
> +	local binary
>  	binary="$1"
>  	if [[ ${test_missing_external_prereq_["${binary}"]} == t ]]; then
>  		# dependency is missing, call the replacement function to note it
> @@ -1075,6 +1085,7 @@ test_ruby() {
>  }
>  
>  test_C () {
> +    local exec_file test_file
>      exec_file="test${test_count}"
>      test_file="${exec_file}.c"
>      cat > ${test_file}
> @@ -1086,6 +1097,7 @@ test_C () {
>  }
>  
>  make_shim () {
> +    local base_name test_file shim_file
>      base_name="$1"
>      test_file="${base_name}.c"
>      shim_file="${base_name}.so"
> @@ -1094,6 +1106,7 @@ make_shim () {
>  }
>  
>  notmuch_with_shim () {
> +    local base_name shim_file
>      base_name="$1"
>      shift
>      shim_file="${base_name}.so"
> -- 
> 2.26.2
>
> _______________________________________________
> notmuch mailing list
> notmuch at notmuchmail.org
> https://notmuchmail.org/mailman/listinfo/notmuch


More information about the notmuch mailing list