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Add `sharness` for shell-based testing (#597) 

Summary:
We will shortly want to perform testing of shell scripts; it makes the
most sense to do so via the shell. We could roll our own testing
framework, but it makes more sense to use an existing one. By choosing
Sharness, we’re in good company: `go-ipfs` and `go-multihash` use it as
well, and it’s derived from Git’s testing library. I like it a lot.

For now, we need a dummy test file; our test runner will fail if there
are no tests to run. As soon as we have a real test, we can remove this.

This commit was generated by following the “per-project installation”
instructions at https://github.com/chriscool/sharness, and by
additionally including that repository’s `COPYING` file as
`SHARNESS_LICENSE`, with a header prepended. I considered instead adding
Sharness as a submodule, which is supported and has clear advantages
(e.g., you can update the thing), but opted to avoid the complexity of
submodules for now.

Test Plan:
Create the following tests in the `sharness` directory:

```shell
$ cat sharness/good.t
#!/bin/sh
test_description='demo of passing tests'
. ./sharness.sh
test_expect_success "look at me go" true
test_expect_success EXPENSIVE "this may take a while" 'sleep 2'
test_done
# vim: ft=sh
$ cat sharness/bad.t
#!/bin/sh
test_description='demo of failing tests'
. ./sharness.sh
test_expect_success "I don't feel so good" false
test_done
# vim: ft=sh
```

Note that `yarn sharness` and `yarn test` fail appropriately. Note that
`yarn sharness-full` fails appropriately after taking two extra seconds,
and `yarn test --full` runs the latter. Each failure message should
print the name of the failing test case, not just the suite name, and
should indicate that the passing tests passed.

Then, remove `sharness/bad.t`, and note that the above commands all
pass, with the `--full` variants still taking longer.

Finally, remove `sharness/good.t`, and note that the above commands all
pass (and all pass quickly).

wchargin-branch: add-sharness
This commit is contained in:
William Chargin 2018-08-06 12:56:25 -07:00 committed by GitHub
parent 00da630bb2
commit baa0cbff1b
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3
CONTRIBUTING.md
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@ -86,6 +86,9 @@ to run them all. This will run:
- **Unit tests** (`yarn unit`). You can also run `yarn unit --watch`
to automatically re-run tests when you change a relevant file.
- **Sharness** (`yarn sharness`). This runs shell-based tests, located
in the `sharness/` directory.
- **Prettier** (`check-pretty`). You can simply run `yarn prettify` to
reformat all files. It can be convenient to set up your editor to
run `yarn prettier --write CURRENT_FILENAME` whenever you save a

10
config/test.js
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@ -57,6 +57,16 @@ function makeTasks(mode /*: "BASIC" | "FULL" */) {
cmd: ["npm", "run", "--silent", "unit"],
deps: [],
},
{
id: {BASIC: "sharness", FULL: "sharness-full"}[mode],
cmd: [
"npm",
"run",
"--silent",
{BASIC: "sharness", FULL: "sharness-full"}[mode],
],
deps: [],
},
{
id: "backend",
cmd: ["npm", "run", "--silent", "backend", "--", "--dry-run"],

2
package.json
View File

@ -77,6 +77,8 @@
"backend": "node scripts/backend.js",
"test": "node ./config/test.js",
"unit": "BABEL_ENV=test NODE_ENV=test jest --env=jsdom",
"sharness": "make -sC ./sharness prove PROVE_OPTS=-f TEST_OPTS='--chain-lint'",
"sharness-full": "make -sC ./sharness prove PROVE_OPTS=-f TEST_OPTS='--chain-lint --long'",
"coverage": "npm run unit -- --coverage",
"flow": "flow",
"lint": "eslint src config --max-warnings 0"

60
sharness/Makefile Normal file
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@ -0,0 +1,60 @@
# Run tests
#
# Copyright (c) 2011-2012 Mathias Lafeldt
# Copyright (c) 2005-2012 Git project
# Copyright (c) 2005-2012 Junio C Hamano
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see http://www.gnu.org/licenses/ .
SHELL_PATH ?= $(SHELL)
SHELL_PATH_SQ = $(subst ','\'',$(SHELL_PATH))
RM ?= rm -f
PROVE ?= prove
AGGREGATE_SCRIPT ?= aggregate-results.sh
DEFAULT_TEST_TARGET ?= test
T = $(sort $(wildcard *.t))
all: $(DEFAULT_TEST_TARGET)
test: pre-clean
$(MAKE) aggregate-results-and-cleanup
prove: pre-clean
@echo "*** prove ***"; $(PROVE) --exec '$(SHELL_PATH_SQ)' $(PROVE_OPTS) $(T) :: $(TEST_OPTS)
$(MAKE) clean-except-prove-cache
$(T):
@echo "*** $@ ***"; '$(SHELL_PATH_SQ)' $@ $(TEST_OPTS)
pre-clean:
$(RM) -r test-results
clean-except-prove-cache:
$(RM) -r 'trash directory'.* test-results
clean: clean-except-prove-cache
$(RM) .prove
aggregate-results-and-cleanup: $(T)
$(MAKE) aggregate-results
$(MAKE) clean
aggregate-results:
for f in test-results/*.counts; do \
echo "$$f"; \
done | '$(SHELL_PATH_SQ)' '$(AGGREGATE_SCRIPT)'
.PHONY: all test prove $(T) pre-clean clean
.PHONY: aggregate-results-and-cleanup aggregate-results

344
sharness/SHARNESS_LICENSE Normal file
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@ -0,0 +1,344 @@
The Sharness library is released under the GNU General Public License,
version 2, the full text of which appears below.
---
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Version 2, June 1991
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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57
sharness/aggregate-results.sh Executable file
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@ -0,0 +1,57 @@
#!/bin/sh
#
# Copyright (c) 2008-2012 Git project
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see http://www.gnu.org/licenses/ .
failed_tests=
fixed=0
success=0
failed=0
broken=0
total=0
while read file; do
while read type value; do
case $type in
'')
continue ;;
fixed)
fixed=$(($fixed + $value)) ;;
success)
success=$(($success + $value)) ;;
failed)
failed=$(($failed + $value))
if test $value != 0; then
test_name=$(expr "$file" : 'test-results/\(.*\)\.[0-9]*\.counts')
failed_tests="$failed_tests $test_name"
fi
;;
broken)
broken=$(($broken + $value)) ;;
total)
total=$(($total + $value)) ;;
esac
done <"$file"
done
if test -n "$failed_tests"; then
printf "\nfailed test(s):$failed_tests\n\n"
fi
printf "%-8s%d\n" fixed $fixed
printf "%-8s%d\n" success $success
printf "%-8s%d\n" failed $failed
printf "%-8s%d\n" broken $broken
printf "%-8s%d\n" total $total

11
sharness/dummy.t Executable file
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@ -0,0 +1,11 @@
#!/bin/sh
test_description="trivial test file so that prove(1) doesn't give up"
. ./sharness.sh
test_expect_success "should trivially pass" true
test_done
# vim: ft=sh

945
sharness/sharness.sh Normal file
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@ -0,0 +1,945 @@
# Sharness test framework.
#
# Copyright (c) 2011-2012 Mathias Lafeldt
# Copyright (c) 2005-2012 Git project
# Copyright (c) 2005-2012 Junio C Hamano
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see http://www.gnu.org/licenses/ .
# Public: Current version of Sharness.
SHARNESS_VERSION="1.0.0"
export SHARNESS_VERSION
# Public: The file extension for tests. By default, it is set to "t".
: ${SHARNESS_TEST_EXTENSION:=t}
export SHARNESS_TEST_EXTENSION
# Public: Root directory containing tests. Tests can override this variable,
# e.g. for testing Sharness itself.
if test -z "$SHARNESS_TEST_DIRECTORY"
then
SHARNESS_TEST_DIRECTORY=$(pwd)
else
# ensure that SHARNESS_TEST_DIRECTORY is an absolute path so that it
# is valid even if the current working directory is changed
SHARNESS_TEST_DIRECTORY=$(cd "$SHARNESS_TEST_DIRECTORY" && pwd) || exit 1
fi
export SHARNESS_TEST_DIRECTORY
# Reset TERM to original terminal if found, otherwise save original TERM
[ "x" = "x$SHARNESS_ORIG_TERM" ] &&
SHARNESS_ORIG_TERM="$TERM" ||
TERM="$SHARNESS_ORIG_TERM"
# Public: The unsanitized TERM under which sharness is originally run
export SHARNESS_ORIG_TERM
# Export SHELL_PATH
: ${SHELL_PATH:=$SHELL}
export SHELL_PATH
# if --tee was passed, write the output not only to the terminal, but
# additionally to the file test-results/$BASENAME.out, too.
case "$SHARNESS_TEST_TEE_STARTED, $* " in
done,*)
# do not redirect again
;;
*' --tee '*)
mkdir -p "$SHARNESS_TEST_DIRECTORY/test-results"
BASE="$SHARNESS_TEST_DIRECTORY/test-results/$(basename "$0" ".$SHARNESS_TEST_EXTENSION")"
(SHARNESS_TEST_TEE_STARTED=done ${SHELL_PATH} "$0" "$@" 2>&1;
echo $? >"$BASE.exit") | tee "$BASE.out"
test "$(cat "$BASE.exit")" = 0
exit
;;
esac
# For repeatability, reset the environment to a known state.
# TERM is sanitized below, after saving color control sequences.
LANG=C
LC_ALL=C
PAGER=cat
TZ=UTC
EDITOR=:
export LANG LC_ALL PAGER TZ EDITOR
unset VISUAL CDPATH GREP_OPTIONS
# Line feed
LF='
'
[ "x$TERM" != "xdumb" ] && (
[ -t 1 ] &&
tput bold >/dev/null 2>&1 &&
tput setaf 1 >/dev/null 2>&1 &&
tput sgr0 >/dev/null 2>&1
) &&
color=t
while test "$#" -ne 0; do
case "$1" in
-d|--d|--de|--deb|--debu|--debug)
debug=t; shift ;;
-i|--i|--im|--imm|--imme|--immed|--immedi|--immedia|--immediat|--immediate)
immediate=t; shift ;;
-l|--l|--lo|--lon|--long|--long-|--long-t|--long-te|--long-tes|--long-test|--long-tests)
TEST_LONG=t; export TEST_LONG; shift ;;
--in|--int|--inte|--inter|--intera|--interac|--interact|--interacti|--interactiv|--interactive|--interactive-|--interactive-t|--interactive-te|--interactive-tes|--interactive-test|--interactive-tests):
TEST_INTERACTIVE=t; export TEST_INTERACTIVE; verbose=t; shift ;;
-h|--h|--he|--hel|--help)
help=t; shift ;;
-v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
verbose=t; shift ;;
-q|--q|--qu|--qui|--quie|--quiet)
# Ignore --quiet under a TAP::Harness. Saying how many tests
# passed without the ok/not ok details is always an error.
test -z "$HARNESS_ACTIVE" && quiet=t; shift ;;
--chain-lint)
chain_lint=t; shift ;;
--no-chain-lint)
chain_lint=; shift ;;
--no-color)
color=; shift ;;
--tee)
shift ;; # was handled already
--root=*)
root=$(expr "z$1" : 'z[^=]*=\(.*\)')
shift ;;
*)
echo "error: unknown test option '$1'" >&2; exit 1 ;;
esac
done
if test -n "$color"; then
# Save the color control sequences now rather than run tput
# each time say_color() is called. This is done for two
# reasons:
# * TERM will be changed to dumb
# * HOME will be changed to a temporary directory and tput
# might need to read ~/.terminfo from the original HOME
# directory to get the control sequences
# Note: This approach assumes the control sequences don't end
# in a newline for any terminal of interest (command
# substitutions strip trailing newlines). Given that most
# (all?) terminals in common use are related to ECMA-48, this
# shouldn't be a problem.
say_color_error=$(tput bold; tput setaf 1) # bold red
say_color_skip=$(tput setaf 4) # blue
say_color_warn=$(tput setaf 3) # brown/yellow
say_color_pass=$(tput setaf 2) # green
say_color_info=$(tput setaf 6) # cyan
say_color_reset=$(tput sgr0)
say_color_="" # no formatting for normal text
say_color() {
test -z "$1" && test -n "$quiet" && return
eval "say_color_color=\$say_color_$1"
shift
printf "%s\\n" "$say_color_color$*$say_color_reset"
}
else
say_color() {
test -z "$1" && test -n "$quiet" && return
shift
printf "%s\n" "$*"
}
fi
TERM=dumb
export TERM
error() {
say_color error "error: $*"
EXIT_OK=t
exit 1
}
say() {
say_color info "$*"
}
test -n "$test_description" || error "Test script did not set test_description."
if test "$help" = "t"; then
echo "$test_description"
exit 0
fi
exec 5>&1
exec 6<&0
if test "$verbose" = "t"; then
exec 4>&2 3>&1
else
exec 4>/dev/null 3>/dev/null
fi
test_failure=0
test_count=0
test_fixed=0
test_broken=0
test_success=0
die() {
code=$?
if test -n "$EXIT_OK"; then
exit $code
else
echo >&5 "FATAL: Unexpected exit with code $code"
exit 1
fi
}
EXIT_OK=
trap 'die' EXIT
# Public: Define that a test prerequisite is available.
#
# The prerequisite can later be checked explicitly using test_have_prereq or
# implicitly by specifying the prerequisite name in calls to test_expect_success
# or test_expect_failure.
#
# $1 - Name of prerequisite (a simple word, in all capital letters by convention)
#
# Examples
#
# # Set PYTHON prerequisite if interpreter is available.
# command -v python >/dev/null && test_set_prereq PYTHON
#
# # Set prerequisite depending on some variable.
# test -z "$NO_GETTEXT" && test_set_prereq GETTEXT
#
# Returns nothing.
test_set_prereq() {
satisfied_prereq="$satisfied_prereq$1 "
}
satisfied_prereq=" "
# Public: Check if one or more test prerequisites are defined.
#
# The prerequisites must have previously been set with test_set_prereq.
# The most common use of this is to skip all the tests if some essential
# prerequisite is missing.
#
# $1 - Comma-separated list of test prerequisites.
#
# Examples
#
# # Skip all remaining tests if prerequisite is not set.
# if ! test_have_prereq PERL; then
# skip_all='skipping perl interface tests, perl not available'
# test_done
# fi
#
# Returns 0 if all prerequisites are defined or 1 otherwise.
test_have_prereq() {
# prerequisites can be concatenated with ','
save_IFS=$IFS
IFS=,
set -- $*
IFS=$save_IFS
total_prereq=0
ok_prereq=0
missing_prereq=
for prerequisite; do
case "$prerequisite" in
!*)
negative_prereq=t
prerequisite=${prerequisite#!}
;;
*)
negative_prereq=
esac
total_prereq=$(($total_prereq + 1))
case "$satisfied_prereq" in
*" $prerequisite "*)
satisfied_this_prereq=t
;;
*)
satisfied_this_prereq=
esac
case "$satisfied_this_prereq,$negative_prereq" in
t,|,t)
ok_prereq=$(($ok_prereq + 1))
;;
*)
# Keep a list of missing prerequisites; restore
# the negative marker if necessary.
prerequisite=${negative_prereq:+!}$prerequisite
if test -z "$missing_prereq"; then
missing_prereq=$prerequisite
else
missing_prereq="$prerequisite,$missing_prereq"
fi
esac
done
test $total_prereq = $ok_prereq
}
# You are not expected to call test_ok_ and test_failure_ directly, use
# the text_expect_* functions instead.
test_ok_() {
test_success=$(($test_success + 1))
say_color "" "ok $test_count - $@"
}
test_failure_() {
test_failure=$(($test_failure + 1))
say_color error "not ok $test_count - $1"
shift
echo "$@" | sed -e 's/^/# /'
test "$immediate" = "" || { EXIT_OK=t; exit 1; }
}
test_known_broken_ok_() {
test_fixed=$(($test_fixed + 1))
say_color error "ok $test_count - $@ # TODO known breakage vanished"
}
test_known_broken_failure_() {
test_broken=$(($test_broken + 1))
say_color warn "not ok $test_count - $@ # TODO known breakage"
}
# Public: Execute commands in debug mode.
#
# Takes a single argument and evaluates it only when the test script is started
# with --debug. This is primarily meant for use during the development of test
# scripts.
#
# $1 - Commands to be executed.
#
# Examples
#
# test_debug "cat some_log_file"
#
# Returns the exit code of the last command executed in debug mode or 0
# otherwise.
test_debug() {
test "$debug" = "" || eval "$1"
}
# Public: Stop execution and start a shell.
#
# This is useful for debugging tests and only makes sense together with "-v".
# Be sure to remove all invocations of this command before submitting.
test_pause() {
if test "$verbose" = t; then
"$SHELL_PATH" <&6 >&3 2>&4
else
error >&5 "test_pause requires --verbose"
fi
}
test_eval_() {
# This is a separate function because some tests use
# "return" to end a test_expect_success block early.
case ",$test_prereq," in
*,INTERACTIVE,*)
eval "$*"
;;
*)
eval </dev/null >&3 2>&4 "$*"
;;
esac
}
test_run_() {
test_cleanup=:
expecting_failure=$2
test_eval_ "$1"
eval_ret=$?
if test "$chain_lint" = "t"; then
test_eval_ "(exit 117) && $1"
if test "$?" != 117; then
error "bug in the test script: broken &&-chain: $1"
fi
fi
if test -z "$immediate" || test $eval_ret = 0 || test -n "$expecting_failure"; then
test_eval_ "$test_cleanup"
fi
if test "$verbose" = "t" && test -n "$HARNESS_ACTIVE"; then
echo ""
fi
return "$eval_ret"
}
test_skip_() {
test_count=$(($test_count + 1))
to_skip=
for skp in $SKIP_TESTS; do
case $this_test.$test_count in
$skp)
to_skip=t
break
esac
done
if test -z "$to_skip" && test -n "$test_prereq" && ! test_have_prereq "$test_prereq"; then
to_skip=t
fi
case "$to_skip" in
t)
of_prereq=
if test "$missing_prereq" != "$test_prereq"; then
of_prereq=" of $test_prereq"
fi
say_color skip >&3 "skipping test: $@"
say_color skip "ok $test_count # skip $1 (missing $missing_prereq${of_prereq})"
: true
;;
*)
false
;;
esac
}
# Public: Run test commands and expect them to succeed.
#
# When the test passed, an "ok" message is printed and the number of successful
# tests is incremented. When it failed, a "not ok" message is printed and the
# number of failed tests is incremented.
#
# With --immediate, exit test immediately upon the first failed test.
#
# Usually takes two arguments:
# $1 - Test description
# $2 - Commands to be executed.
#
# With three arguments, the first will be taken to be a prerequisite:
# $1 - Comma-separated list of test prerequisites. The test will be skipped if
# not all of the given prerequisites are set. To negate a prerequisite,
# put a "!" in front of it.
# $2 - Test description
# $3 - Commands to be executed.
#
# Examples
#
# test_expect_success \
# 'git-write-tree should be able to write an empty tree.' \
# 'tree=$(git-write-tree)'
#
# # Test depending on one prerequisite.
# test_expect_success TTY 'git --paginate rev-list uses a pager' \
# ' ... '
#
# # Multiple prerequisites are separated by a comma.
# test_expect_success PERL,PYTHON 'yo dawg' \
# ' test $(perl -E 'print eval "1 +" . qx[python -c "print 2"]') == "4" '
#
# Returns nothing.
test_expect_success() {
test "$#" = 3 && { test_prereq=$1; shift; } || test_prereq=
test "$#" = 2 || error "bug in the test script: not 2 or 3 parameters to test_expect_success"
export test_prereq
if ! test_skip_ "$@"; then
say >&3 "expecting success: $2"
if test_run_ "$2"; then
test_ok_ "$1"
else
test_failure_ "$@"
fi
fi
echo >&3 ""
}
# Public: Run test commands and expect them to fail. Used to demonstrate a known
# breakage.
#
# This is NOT the opposite of test_expect_success, but rather used to mark a
# test that demonstrates a known breakage.
#
# When the test passed, an "ok" message is printed and the number of fixed tests
# is incremented. When it failed, a "not ok" message is printed and the number
# of tests still broken is incremented.
#
# Failures from these tests won't cause --immediate to stop.
#
# Usually takes two arguments:
# $1 - Test description
# $2 - Commands to be executed.
#
# With three arguments, the first will be taken to be a prerequisite:
# $1 - Comma-separated list of test prerequisites. The test will be skipped if
# not all of the given prerequisites are set. To negate a prerequisite,
# put a "!" in front of it.
# $2 - Test description
# $3 - Commands to be executed.
#
# Returns nothing.
test_expect_failure() {
test "$#" = 3 && { test_prereq=$1; shift; } || test_prereq=
test "$#" = 2 || error "bug in the test script: not 2 or 3 parameters to test_expect_failure"
export test_prereq
if ! test_skip_ "$@"; then
say >&3 "checking known breakage: $2"
if test_run_ "$2" expecting_failure; then
test_known_broken_ok_ "$1"
else
test_known_broken_failure_ "$1"
fi
fi
echo >&3 ""
}
# Public: Run test commands and expect anything from them. Used when a
# test is not stable or not finished for some reason.
#
# When the test passed, an "ok" message is printed, but the number of
# fixed tests is not incremented.
#
# When it failed, a "not ok ... # TODO known breakage" message is
# printed, and the number of tests still broken is incremented.
#
# Failures from these tests won't cause --immediate to stop.
#
# Usually takes two arguments:
# $1 - Test description
# $2 - Commands to be executed.
#
# With three arguments, the first will be taken to be a prerequisite:
# $1 - Comma-separated list of test prerequisites. The test will be skipped if
# not all of the given prerequisites are set. To negate a prerequisite,
# put a "!" in front of it.
# $2 - Test description
# $3 - Commands to be executed.
#
# Returns nothing.
test_expect_unstable() {
test "$#" = 3 && { test_prereq=$1; shift; } || test_prereq=
test "$#" = 2 || error "bug in the test script: not 2 or 3 parameters to test_expect_unstable"
export test_prereq
if ! test_skip_ "$@"; then
say >&3 "checking unstable test: $2"
if test_run_ "$2" unstable; then
test_ok_ "$1"
else
test_known_broken_failure_ "$1"
fi
fi
echo >&3 ""
}
# Public: Run command and ensure that it fails in a controlled way.
#
# Use it instead of "! <command>". For example, when <command> dies due to a
# segfault, test_must_fail diagnoses it as an error, while "! <command>" would
# mistakenly be treated as just another expected failure.
#
# This is one of the prefix functions to be used inside test_expect_success or
# test_expect_failure.
#
# $1.. - Command to be executed.
#
# Examples
#
# test_expect_success 'complain and die' '
# do something &&
# do something else &&
# test_must_fail git checkout ../outerspace
# '
#
# Returns 1 if the command succeeded (exit code 0).
# Returns 1 if the command died by signal (exit codes 130-192)
# Returns 1 if the command could not be found (exit code 127).
# Returns 0 otherwise.
test_must_fail() {
"$@"
exit_code=$?
if test $exit_code = 0; then
echo >&2 "test_must_fail: command succeeded: $*"
return 1
elif test $exit_code -gt 129 -a $exit_code -le 192; then
echo >&2 "test_must_fail: died by signal: $*"
return 1
elif test $exit_code = 127; then
echo >&2 "test_must_fail: command not found: $*"
return 1
fi
return 0
}
# Public: Run command and ensure that it succeeds or fails in a controlled way.
#
# Similar to test_must_fail, but tolerates success too. Use it instead of
# "<command> || :" to catch failures caused by a segfault, for instance.
#
# This is one of the prefix functions to be used inside test_expect_success or
# test_expect_failure.
#
# $1.. - Command to be executed.
#
# Examples
#
# test_expect_success 'some command works without configuration' '
# test_might_fail git config --unset all.configuration &&
# do something
# '
#
# Returns 1 if the command died by signal (exit codes 130-192)
# Returns 1 if the command could not be found (exit code 127).
# Returns 0 otherwise.
test_might_fail() {
"$@"
exit_code=$?
if test $exit_code -gt 129 -a $exit_code -le 192; then
echo >&2 "test_might_fail: died by signal: $*"
return 1
elif test $exit_code = 127; then
echo >&2 "test_might_fail: command not found: $*"
return 1
fi
return 0
}
# Public: Run command and ensure it exits with a given exit code.
#
# This is one of the prefix functions to be used inside test_expect_success or
# test_expect_failure.
#
# $1 - Expected exit code.
# $2.. - Command to be executed.
#
# Examples
#
# test_expect_success 'Merge with d/f conflicts' '
# test_expect_code 1 git merge "merge msg" B master
# '
#
# Returns 0 if the expected exit code is returned or 1 otherwise.
test_expect_code() {
want_code=$1
shift
"$@"
exit_code=$?
if test $exit_code = $want_code; then
return 0
fi
echo >&2 "test_expect_code: command exited with $exit_code, we wanted $want_code $*"
return 1
}
# Public: Compare two files to see if expected output matches actual output.
#
# The TEST_CMP variable defines the command used for the comparison; it
# defaults to "diff -u". Only when the test script was started with --verbose,
# will the command's output, the diff, be printed to the standard output.
#
# This is one of the prefix functions to be used inside test_expect_success or
# test_expect_failure.
#
# $1 - Path to file with expected output.
# $2 - Path to file with actual output.
#
# Examples
#
# test_expect_success 'foo works' '
# echo expected >expected &&
# foo >actual &&
# test_cmp expected actual
# '
#
# Returns the exit code of the command set by TEST_CMP.
test_cmp() {
${TEST_CMP:-diff -u} "$@"
}
# Public: portably print a sequence of numbers.
#
# seq is not in POSIX and GNU seq might not be available everywhere,
# so it is nice to have a seq implementation, even a very simple one.
#
# $1 - Starting number.
# $2 - Ending number.
#
# Examples
#
# test_expect_success 'foo works 10 times' '
# for i in $(test_seq 1 10)
# do
# foo || return
# done
# '
#
# Returns 0 if all the specified numbers can be displayed.
test_seq() {
i="$1"
j="$2"
while test "$i" -le "$j"
do
echo "$i" || return
i=$(expr "$i" + 1)
done
}
# Public: Check if the file expected to be empty is indeed empty, and barfs
# otherwise.
#
# $1 - File to check for emptiness.
#
# Returns 0 if file is empty, 1 otherwise.
test_must_be_empty() {
if test -s "$1"
then
echo "'$1' is not empty, it contains:"
cat "$1"
return 1
fi
}
# debugging-friendly alternatives to "test [-f|-d|-e]"
# The commands test the existence or non-existence of $1. $2 can be
# given to provide a more precise diagnosis.
test_path_is_file () {
if ! test -f "$1"
then
echo "File $1 doesn't exist. $2"
false
fi
}
test_path_is_dir () {
if ! test -d "$1"
then
echo "Directory $1 doesn't exist. $2"
false
fi
}
# Check if the directory exists and is empty as expected, barf otherwise.
test_dir_is_empty () {
test_path_is_dir "$1" &&
if test -n "$(ls -a1 "$1" | egrep -v '^\.\.?$')"
then
echo "Directory '$1' is not empty, it contains:"
ls -la "$1"
return 1
fi
}
# Public: Schedule cleanup commands to be run unconditionally at the end of a
# test.
#
# If some cleanup command fails, the test will not pass. With --immediate, no
# cleanup is done to help diagnose what went wrong.
#
# This is one of the prefix functions to be used inside test_expect_success or
# test_expect_failure.
#
# $1.. - Commands to prepend to the list of cleanup commands.
#
# Examples
#
# test_expect_success 'test core.capslock' '
# git config core.capslock true &&
# test_when_finished "git config --unset core.capslock" &&
# do_something
# '
#
# Returns the exit code of the last cleanup command executed.
test_when_finished() {
test_cleanup="{ $*
} && (exit \"\$eval_ret\"); eval_ret=\$?; $test_cleanup"
}
# Public: Schedule cleanup commands to be run unconditionally when all tests
# have run.
#
# This can be used to clean up things like test databases. It is not needed to
# clean up temporary files, as test_done already does that.
#
# Examples:
#
# cleanup mysql -e "DROP DATABASE mytest"
#
# Returns the exit code of the last cleanup command executed.
final_cleanup=
cleanup() {
final_cleanup="{ $*
} && (exit \"\$eval_ret\"); eval_ret=\$?; $final_cleanup"
}
# Public: Summarize test results and exit with an appropriate error code.
#
# Must be called at the end of each test script.
#
# Can also be used to stop tests early and skip all remaining tests. For this,
# set skip_all to a string explaining why the tests were skipped before calling
# test_done.
#
# Examples
#
# # Each test script must call test_done at the end.
# test_done
#
# # Skip all remaining tests if prerequisite is not set.
# if ! test_have_prereq PERL; then
# skip_all='skipping perl interface tests, perl not available'
# test_done
# fi
#
# Returns 0 if all tests passed or 1 if there was a failure.
test_done() {
EXIT_OK=t
if test -z "$HARNESS_ACTIVE"; then
test_results_dir="$SHARNESS_TEST_DIRECTORY/test-results"
mkdir -p "$test_results_dir"
test_results_path="$test_results_dir/$this_test.$$.counts"
cat >>"$test_results_path" <<-EOF
total $test_count
success $test_success
fixed $test_fixed
broken $test_broken
failed $test_failure
EOF
fi
if test "$test_fixed" != 0; then
say_color error "# $test_fixed known breakage(s) vanished; please update test(s)"
fi
if test "$test_broken" != 0; then
say_color warn "# still have $test_broken known breakage(s)"
fi
if test "$test_broken" != 0 || test "$test_fixed" != 0; then
test_remaining=$(( $test_count - $test_broken - $test_fixed ))
msg="remaining $test_remaining test(s)"
else
test_remaining=$test_count
msg="$test_count test(s)"
fi
case "$test_failure" in
0)
# Maybe print SKIP message
if test -n "$skip_all" && test $test_count -gt 0; then
error "Can't use skip_all after running some tests"
fi
[ -z "$skip_all" ] || skip_all=" # SKIP $skip_all"
if test $test_remaining -gt 0; then
say_color pass "# passed all $msg"
fi
say "1..$test_count$skip_all"
test_eval_ "$final_cleanup"
test -d "$remove_trash" &&
cd "$(dirname "$remove_trash")" &&
rm -rf "$(basename "$remove_trash")"
exit 0 ;;
*)
say_color error "# failed $test_failure among $msg"
say "1..$test_count"
exit 1 ;;
esac
}
# Public: Source directory of test code and sharness library.
# This directory may be different from the directory in which tests are
# being run.
: ${SHARNESS_TEST_SRCDIR:=$(cd $(dirname $0) && pwd)}
export SHARNESS_TEST_SRCDIR
# Public: Build directory that will be added to PATH. By default, it is set to
# the parent directory of SHARNESS_TEST_DIRECTORY.
: ${SHARNESS_BUILD_DIRECTORY:="$SHARNESS_TEST_DIRECTORY/.."}
PATH="$SHARNESS_BUILD_DIRECTORY:$PATH"
export PATH SHARNESS_BUILD_DIRECTORY
# Public: Path to test script currently executed.
SHARNESS_TEST_FILE="$0"
export SHARNESS_TEST_FILE
# Prepare test area.
SHARNESS_TRASH_DIRECTORY="trash directory.$(basename "$SHARNESS_TEST_FILE" ".$SHARNESS_TEST_EXTENSION")"
test -n "$root" && SHARNESS_TRASH_DIRECTORY="$root/$SHARNESS_TRASH_DIRECTORY"
case "$SHARNESS_TRASH_DIRECTORY" in
/*) ;; # absolute path is good
*) SHARNESS_TRASH_DIRECTORY="$SHARNESS_TEST_DIRECTORY/$SHARNESS_TRASH_DIRECTORY" ;;
esac
test "$debug" = "t" || remove_trash="$SHARNESS_TRASH_DIRECTORY"
rm -rf "$SHARNESS_TRASH_DIRECTORY" || {
EXIT_OK=t
echo >&5 "FATAL: Cannot prepare test area"
exit 1
}
#
# Load any extensions in $srcdir/sharness.d/*.sh
#
if test -d "${SHARNESS_TEST_SRCDIR}/sharness.d"
then
for file in "${SHARNESS_TEST_SRCDIR}"/sharness.d/*.sh
do
# Ensure glob was not an empty match:
test -e "${file}" || break
if test -n "$debug"
then
echo >&5 "sharness: loading extensions from ${file}"
fi
. "${file}"
if test $? != 0
then
echo >&5 "sharness: Error loading ${file}. Aborting."
exit 1
fi
done
fi
# Public: Empty trash directory, the test area, provided for each test. The HOME
# variable is set to that directory too.
export SHARNESS_TRASH_DIRECTORY
HOME="$SHARNESS_TRASH_DIRECTORY"
export HOME
mkdir -p "$SHARNESS_TRASH_DIRECTORY" || exit 1
# Use -P to resolve symlinks in our working directory so that the cwd
# in subprocesses like git equals our $PWD (for pathname comparisons).
cd -P "$SHARNESS_TRASH_DIRECTORY" || exit 1
this_test=${SHARNESS_TEST_FILE##*/}
this_test=${this_test%.$SHARNESS_TEST_EXTENSION}
for skp in $SKIP_TESTS; do
case "$this_test" in
$skp)
say_color info >&3 "skipping test $this_test altogether"
skip_all="skip all tests in $this_test"
test_done
esac
done
test -n "$TEST_LONG" && test_set_prereq EXPENSIVE
test -n "$TEST_INTERACTIVE" && test_set_prereq INTERACTIVE
# Make sure this script ends with code 0
:
# vi: set ts=4 sw=4 noet :