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#!/usr/bin/env bash
#
# Unit-testing script
#
# This script does the following:
# 1. Check whether any files were modified that would necessitate unit testing (using the `TRAVIS_COMMIT_RANGE` environment variable).
# 2. If there are no changed files that require unit testing, exit successfully.
# 3. Otherwise, run all the unit tests.
#
# We do things this way because our unit testing takes a rather long
# time (average 18-19 minutes as of the original creation of this script),
# so skipping it when we don't actually need it can significantly speed
# up the CI process.
#
# Copyright: SPDX-License-Identifier: GPL-3.0-or-later
#
# Author: Austin S. Hemmelgarn <austin@netdata.cloud>
#
# shellcheck disable=SC2230
install_netdata() {
echo "Installing Netdata"
fakeroot ./netdata-installer.sh --install $HOME --dont-wait --dont-start-it --enable-plugin-nfacct --enable-plugin-freeipmi --disable-lto
}
c_unit_tests() {
echo "Running C code unit tests"
$HOME/netdata/usr/sbin/netdata -W unittest
}
run_c_unit_tests=
if [ -z ${TRAVIS_COMMIT_RANGE} ] ; then
# Travis gave us no commit range, so just run all the unit tests.
# Per the docs, this is the case when a new branch is pushed for the first time.
echo "No commit range supplied, assuming the worst case and running all unit tests."
run_c_unit_tests=1
else
changed_paths=
if [ "${TRAVIS_PULL_REQUEST}" = "false" ] ; then
# This is not a PR build.
COMMIT1="$(echo ${TRAVIS_COMMIT_RANGE} | cut -f 1 -d '.')"
COMMIT2="$(echo ${TRAVIS_COMMIT_RANGE} | cut -f 4 -d '.')"
if [ "$(git cat-file -t ${COMMIT1} 2>/dev/null)" = commit -a "$(git cat-file -t ${COMMIT2} 2>/dev/null)" = commit ] ; then
# Examine the exact set of commits passed by Travis.
echo "Checking commits:"
git log --format=oneline --abbrev-commit ${COMMIT1}..${COMMIT2}
changed_paths="$(git diff --name-only ${COMMIT1}..${COMMIT2} --)"
else
# We couldn't find at least one of the changesets, so this build
# was probably triggered by a history rewrite. Since we can't
# figure out what chnaged, we need to just run all the tests anyway.
echo "Cannot determine which commits we are testing, running all unit tests."
run_c_unit_tests=1
fi
else
# This is a PR build, look at all commits from the target branch
# to HEAD.
echo "Checking commits:"
git log --format=oneline --abbrev-commit ${TRAVIS_BRANCH}..HEAD
changed_paths="$(git diff --name-only ${TRAVIS_BRANCH}..HEAD --)"
fi
if [ -n "${changed_paths}" ] ; then
# Check for changes that would require the C code to be re-tested
if (echo ${changed_paths} | grep -qE "daemon/unit_test|database") ; then
echo "Commits appear to change C code with unit tests, queueing C unit tests."
run_c_unit_tests=1
fi
fi
fi
if [ -z ${run_c_unit_tests} ] ; then
# No tests to run, log this and exit with success
echo "Commit range ${TRAVIS_COMMIT_RANGE} appears to make no changes that require unit tests, skipping unit testing."
exit 0
else
install_netdata || exit 1
if [ -n ${run_c_unit_tests} ] ; then
c_unit_tests || exit 1
fi
fi
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