Developer Documentation

Setting up Automated Regression Testing for Octo


Automated regression tests are run on every Octo source code update and install. Run BATS only if you are an advanced user who wants to contribute to Octo or run on a Linux distribution on which YottaDB is Supportable but not Supported.

Installing YottaDB

Testing Octo requires YottaDB r1.34 or greater to be installed in UTF-8 mode, with AIM and POSIX plugins.

# Install prerequisite packages
# Ubuntu/Debian
apt update && apt install wget file procps libelf1 libicu-dev curl cmake make gcc pkg-config sudo git

# Rocky Linux/RHEL
yum install wget file procps-ng binutils findutils elfutils-libelf libicu libicu-devel curl cmake make gcc pkg-config sudo git nano gzip

# Install YottaDB
mkdir /tmp/tmp ; wget -P /tmp/tmp
cd /tmp/tmp ; chmod +x
./ --overwrite-existing --utf8 --aim --posix

Prerequisites for Automated Regression Testing


Run the following commands to install all of the prerequisites needed for testing Octo on Ubuntu or Debian Linux. You can substitute mariadb-server and mariadb-client instead of mysql-server and mysql-client packages.

git clone && cd bats-core && sudo ./ /usr
sudo apt-get install default-jdk expect golang-go locales libcmocka-dev postgresql-client postgresql mysql-client mysql-server unixodbc odbc-postgresql bison flex libreadline-dev libconfig-dev libssl-dev python3 ncat
locale-gen en_US.UTF-8

Rocky Linux/RHEL

Run the following commands to install and setup all of the prerequisites needed for testing Octo on Rocky Linux or RHEL. You can substitute mariadb and mariadb-server for mysql and mysql-server.

git clone && cd bats-core && sudo ./ /usr

# Rocky Linux
sudo yum --enablerepo=powertools install java-11-openjdk-devel expect golang glibc-langpack-en libcmocka-devel postgresql postgresql-server mysql mysql-server unixODBC postgresql-odbc bison flex readline-devel libconfig-devel openssl-devel python3 passwd nmap-ncat

# RHEL 8
sudo subscription-manager repos --enable codeready-builder-for-rhel-8-x86_64-rpms
sudo yum install java-11-openjdk-devel expect golang glibc-langpack-en libcmocka-devel postgresql postgresql-server mysql mysql-server unixODBC postgresql-odbc bison flex readline-devel libconfig-devel openssl-devel python3 passwd nmap-ncat

Configure PostgreSQL and MySQL/MariaDB

PostgreSQL must be set up for the user who will be running the tests:

sudo -u postgres createuser $USER
sudo -u postgres psql <<PSQL
alter user $USER createdb;
create database $USER LC_COLLATE='C' template=template0;

MySQL/MariaDB must be set up for the user who will be running the tests, using a password of 'ydbrocks'. Assuming a bash shell, the following can be run as a single command to do the necessary setup:

sudo mysql <<MYSQL
CREATE USER '$USER'@'localhost' IDENTIFIED BY 'ydbrocks';

Download Octo

Clone the Octo source code repository in a temporary directory using the following commands:

mkdir tmp && cd tmp
git clone
cd YDBOcto
mkdir build && cd build

Compile Octo

CMake Flags

  • Use DISABLE_INSTALL=ON to disable the generation of installation rules for the make install command.

  • Use FULL_TEST_SUITE=ON to build the full test suite for Octo.

  • In addition, there is a speed test that can be enabled by TEST_SPEED=ON. The speed test is intended for use in benchmarking and needs to be run separately from the full test suite. Run it with bats -T bats_tests/test_speed.bats or with the equivalent command ctest -V -R test_speed.

A typical developer would use the following command:



Run the following command to compile Octo:

make -j `getconf _NPROCESSORS_ONLN`


For testing purposes, Octo installation is not necessary. However, the following command can be used to install Octo:

sudo -E make install

Sanity Checks

Use the Northwind database to check if Octo has been setup properly. The dummy data set can be found in the tests/fixtures subdirectory of the YDBOcto repository created by git clone

Assuming that /tmp/YDBOcto is the directory from the git clone command:

# Set ydb_routines
export ydb_routines=". src/utf8/"
# Source ydb_* variables
source /usr/local/etc/ydb_env_set
# ydb_dir can optionally be set to use a location other than $HOME/.yottadb for the working environment.

mupip load ../tests/fixtures/northwind.zwr
src/octo -f ../tests/fixtures/northwind.sql

Once loaded, start the Octo interactive shell and run the following SELECT command:

OCTO> SELECT * FROM Suppliers;
1|Exotic Liquid|Charlotte Cooper|49 Gilbert St.|Londona|EC1 4SD|UK|(171) 555-2222
2|New Orleans Cajun Delights|Shelley Burke|P.O. Box 78934|New Orleans|70117|USA|(100) 555-4822
3|Grandma Kelly's Homestead|Regina Murphy|707 Oxford Rd.|Ann Arbor|48104|USA|(313) 555-5735
4|Tokyo Traders|Yoshi Nagase|9-8 Sekimai Musashino-shi|Tokyo|100|Japan|(03) 3555-5011
5|Cooperativa de Quesos 'Las Cabras'|Antonio del Valle Saavedra |Calle del Rosal 4|Oviedo|33007|Spain|(98) 598 76 54
6|Mayumi's|Mayumi Ohno|92 Setsuko Chuo-ku|Osaka|545|Japan|(06) 431-7877
7|Pavlova, Ltd.|Ian Devling|74 Rose St. Moonie Ponds|Melbourne|3058|Australia|(03) 444-2343
8|Specialty Biscuits, Ltd.|Peter Wilson|29 King's Way|Manchester|M14 GSD|UK|(161) 555-4448
9|PB Knäckebröd AB|Lars Peterson|Kaloadagatan 13|Göteborg|S-345 67|Sweden |031-987 65 43
10|Refrescos Americanas LTDA|Carlos Diaz|Av. das Americanas 12.890|Săo Paulo|5442|Brazil|(11) 555 4640
11|Heli Süßwaren GmbH & Co. KG|Petra Winkler|Tiergartenstraße 5|Berlin|10785|Germany|(010) 9984510
12|Plutzer Lebensmittelgroßmärkte AG|Martin Bein|Bogenallee 51|Frankfurt|60439|Germany|(069) 992755
13|Nord-Ost-Fisch Handelsgesellschaft mbH|Sven Petersen|Frahmredder 112a|Cuxhaven|27478|Germany|(04721) 8713
14|Formaggi Fortini s.r.l.|Elio Rossi|Viale Dante, 75|Ravenna|48100|Italy|(0544) 60323
15|Norske Meierier|Beate Vileid|Hatlevegen 5|Sandvika|1320|Norway|(0)2-953010
16|Bigfoot Breweries|Cheryl Saylor|3400 - 8th Avenue Suite 210|Bend|97101|USA|(503) 555-9931
17|Svensk Sjöföda AB|Michael Björn|Brovallavägen 231|Stockholm|S-123 45|Sweden|08-123 45 67
18|Aux joyeux ecclésiastiques|Guylène Nodier|203, Rue des Francs-Bourgeois|Paris|75004|France|(1)
19|New England Seafood Cannery|Robb Merchant|Order Processing Dept. 2100 Paul Revere Blvd.|Boston|02134|USA|(617) 555-3267
20|Leka Trading|Chandra Leka|471 Serangoon Loop, Suite #402|Singapore|0512|Singapore|555-8787
21|Lyngbysild|Niels Petersen|Lyngbysild Fiskebakken 10|Lyngby|2800|Denmark|43844108
22|Zaanse Snoepfabriek|Dirk Luchte|Verkoop Rijnweg 22|Zaandam|9999 ZZ|Netherlands|(12345) 1212
23|Karkki Oy|Anne Heikkonen|Valtakatu 12|Lappeenranta|53120|Finland|(953) 10956
24|G'day, Mate|Wendy Mackenzie|170 Prince Edward Parade Hunter's Hill|Sydney|2042|Australia|(02) 555-5914
25|Ma Maison|Jean-Guy Lauzon|2960 Rue St. Laurent|Montréal|H1J 1C3|Canada|(514) 555-9022
26|Pasta Buttini s.r.l.|Giovanni Giudici|Via dei Gelsomini, 153|Salerno|84100|Italy|(089) 6547665
27|Escargots Nouveaux|Marie Delamare|22, rue H. Voiron|Montceau|71300|France|
28|Gai pâturage|Eliane Noz|Bat. B 3, rue des Alpes|Annecy|74000|France|
29|Forêts d'érables|Chantal Goulet|148 rue Chasseur|Ste-Hyacinthe|J2S 7S8|Canada|(514) 555-2955
(29 rows)

Run the following sample tests to check if test prerequisites have been satisfied:

bats bats_tests/hello_bats.bats
bats bats_tests/hello_db.bats

Running all the tests

To show the output of failed tests, export the environment variable CTEST_OUTPUT_ON_FAILURE=TRUE. Alternatively, you can show output for only a single run by passing the argument to make, make CTEST_OUTPUT_ON_FAILURE=TRUE test.

For example, run the following command to run the full test suite:

ctest -j `getconf _NPROCESSORS_ONLN`
100% tests passed, 0 tests failed out of 137

Total Test time (real) = 1111.17 sec


To contribute or help with further development, fork the YDBOcto repository, clone your fork to a local copy and begin contributing!

Please also set up the pre-commit and pre-rebase script to automatically enforce some coding conventions. Creating a symbolic link to YDBOcto/pre-commit and YDBOcto/pre-rebase will be enough for the setup. Assuming you are in the top-level directory of your local copy, the following will work:

ln -s ../../pre-commit .git/hooks/pre-commit
ln -s ../../pre-rebase .git/hooks/pre-rebase

Note that this script will require tcsh and clang-format-11 or a later release.

# Ubuntu 20.04
sudo apt install --no-install-recommends clang-format-11
# Any Debian-like distro; see also
bash -c "$(wget -O -"
# RHEL 8/Rocky Linux
sudo yum install clang-tools-extra


The CI pipeline will run the clang-tidy tool to catch common errors. You can replicate its behavior locally as follows:

# Ubuntu 20.04
sudo apt install --no-install-recommends clang-tidy
# Any Debian-like distro
bash -c "$(wget -O -"
# RHEL 8/Rocky Linux
sudo yum install clang-tools-extra

mkdir build
cd build
clang-tidy ../src/octo_init.c  # replace octo_init.c with the file you want to check

clang-tidy-8 and later are supported.


There are 4 Dockerfiles at the top of the source tree:

  • Dockerfile

  • Dockerfile-Tests.rocky

  • Dockerfile-Tests.ubuntu


Dockerfile builds a docker container suitable for use for using Octo in a testing capacity. The other files are all testing related, and are used to replicate the Gitlab pipelines. There are instructions at the top of each file for usage as well as current limitations.