--- /dev/null
+++ b/tests/README
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+# Tests
+
+## How to run
+
+1. Run `npm install`.
+2. Setup a test node. You can do it using `docker-compose up -d` in parent directory.
+3. Configure tests with env variables or by editing [configuration file](src/config.ts).
+4. Run `npm run test`.
+
+## Don't run on the same node twice
+
+Some tests fail when ran on the same blockchain node twice. Either always use a new node or purge the existing one with `nft purge-chain --dev`. There is also [a script](../purge-running-node.sh) to purge and restart a node, started with docker-compose.