added blurb about testing

README.md

@@ -20,7 +20,7 @@ POSTGRES_DB=rgraph
 
 Start database
 ```sh
-docker-compose up
+docker-compose -p recipe-dev up
 ```
 
 Example `sites.json`
@@ -41,6 +41,11 @@ python src/db.py
 python src/insert_sites.py data/sites.json
 ```
 
+Shutdown database
+```sh
+docker-compose -p recipe-dev down
+```
+
 ## Usage
 ### Scrape
 import new recipes
@@ -72,6 +77,31 @@ options:
   -v, --verbose
 ```
 
+## Testing
+For testing create a new set up docker containers. Tests will fail if
+the database is already initiated.
+
+Starting testing db
+```sh
+docker-compose -p recipe-test up
+```
+
+running tests
+```sh
+pytest
+```
+
+**WARNINING**: If you get `ERROR at setup of test_db_connection` and 
+`ERROR at setup of test_db_class_creation`, please check if testing database is
+already initiated. Testing is destructive and should be done on a fresh database.
+
+
+Shutting down testing db
+```sh
+docker-compose -p recipe-test down
+```
+
+
 ## TODO
  > ☑ automate scraping\
  > ☑ extracting quantity and name (via regex)\