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Setting up for running tests

This document describes what needs to be done to run tests against a Postgres database.

Initial setup

Docker Compose

We provide inside the devel directory a Docker Compose manifest that is preconfigured to launch the required test dependencies.

To ease the required folder creation on disk, we provide a small script called devel/up.sh that creates the necessary data folder(s) and launch docker-compose up.

To launch Postgres and IPFS server, simply do

./store/test-store/devel/up.sh
  • Note By default, up.sh re-uses existing data on disk if present, use ./store/test-store/devel/up.sh -c to clean any previous data before starting the dependencies.

Give a 1 minute for all dependencies to properly starts correctly, then jump to Running tests.

Resetting the test databases

Simply tear down the docker compose process and run ./devel/up.sh again, this will start back fresh.

Manual

Before starting, you will need to set up a database user graph and give it the password graph by running createuser -W graph.

You also need to arrange for psql and similar tools to connect to Postgres automatically as the postgres user.

For that, add this line as the first non-comment line to $PGDATA/pg_hba.conf:

local   all             postgres                                peer map=admin

and add these lines to data/pg_ident.conf:

admin           postgres                postgres
admin           <your username>         postgres

You might also want to set log_statement = 'all' to $PGDATA/postgresql.conf. That will cause Postgres to log all SQL statements that the tests send it which can sometimes be very helpful when tests fail.

After making all these changes, restart Postgres to make sure it actually uses these settings, then jump to Running tests.

Resetting the test databases

The script db-reset will (re)create databases in the test cluster. This script can be used to remove old databases and/or broken databases schemas and cause cargo test to create the schema from scratch on the next test run.

Note that db-reset will completely delete the databases graph-test and graph-sgd in the databases cluster that a plain invocation of psql connects to.

Running tests

Before running tests set the environment variable GRAPH_NODE_TEST_CONFIG to point either at config.simple.toml or config.sharded.toml.

GRAPH_NODE_TEST_CONFIG=`pwd`/store/test-store/config.simple.toml cargo test --workspace --exclude graph-tests
  • Note You can use either config.simple.toml or config.sharded.toml.

This will run all unit and integration tests. The graph-tests crate contains more extensive integration tests that depend on running docker containers; that setup is outside the scope of the document, and we therefore exclude them from running for basic usage.

When you switch from one of the test configurations to another, you will need to clean out the test databases by running db-reset.