fix(nocodb): Added env configuration to unit test and added that to docs as well

packages/noco-docs/content/en/engineering/testing.md

@@ -1,46 +1,70 @@
 ---
-title: "Writing Tests"
-description: "Overview to testing"
+title: "Writing Unit Tests"
+description: "Overview to unit testing"
 position: 3250
 category: "Engineering"
-menuTitle: "Testing"
+menuTitle: "Unit tests"
 ---
 
-## API Tests
+## Pre-requisites
 
-### Pre-requisites
 - MySQL is preferrable - however we fallback to SQLite
 
-### Setup  
-```
-cp scripts/.env.copy scripts/.env
-open scripts/.env
+## Setup  
 
-# Edit the following env variables
-# `DB_USER` : mysql username
-# `DB_PASSWORD` : mysql password
-# `DB_HOST` : mysql host
-# `DB_PORT` : mysql port
-```
+- All the tests are in `packages/nocodb` folder, which will be our working directory. Use the following command to get into that folder.
 
-### Running tests
-```
+```bash
 cd packages/nocodb
+```
+
+- Install the dependencies for `nocodb` package
+
+```bash
+npm install
+```
+
+### Environment variables
+
+- Add your `env` file with the following command
+
+```
+cp tests/unit/.env.copy tests/unit/.env
+```
+
+- Open the `.env` file
+
+```
+open tests/unit/.env
+````
+
+- Configure the following variables
+
+> DB_USER : mysql username </br>
+> DB_PASSWORD : mysql password </br>
+> DB_HOST : mysql host </br>
+> DB_PORT : mysql port </br>
+
+
+
+## How to run tests
+
+```
+
 npm run test:unit
 ```
 
-### Notes 
+## Key points
 
-#### Key points
 - All individual unit tests are independent of each other. We don't use any shared state between tests.
 - Test environment includes `sakila` sample database and any change to it by a test is reverted before running other tests.
 - While running unit tests, it tries to connect to mysql server running on `localhost:3306` with username `root` and password `password`(which can be configured) and if not found, it will use `sqlite` as a fallback, hence no requirement of any sql server to run tests.
 
-#### Walk through of writing a unit test
+### Walk through of writing a unit test
+
 We will create an `Table` test suite as an example.
 
-
-##### Configure test
+#### Configure test
 
 We will configure `beforeEach` which is called before each test is executed. We will use `init` function from `nocodb/packages/tests/unit/init/index.ts`, which is a helper function which configures the test environment(i.e resetting state, etc.).