feat: always build before testing

Author: sanjibansg

Diff for: .github/workflows/test.yaml

@@ -1,4 +1,4 @@
-name: substraitJS test
+name: substraitJS
 
 on: [push, pull_request]
 
@@ -26,9 +26,6 @@ jobs:
       - name: Install dependencies
         run: npm ci
 
-      - name: Build project
-        run: npm run build
-
       - name: Run tests
         run: npm run test
 

Diff for: .nvmrc

@@ -43,6 +43,16 @@ nvm use 18.0.0
 
 substrait  -p ../plan.json -o <output path>
 ```
+
+## Testing
+Jest is used for testing the visualization functionality of the library. To run the test, we need
+to use `nvm v18.0.0`
+```
+source ~/.nvm/nvm.sh
+nvm use 18.0.0
+
+npm run test
+```
 
 ## License
 [Apache-2.0 license](https://www.apache.org/licenses/LICENSE-2.0)

Diff for: README.md

@@ -18,7 +18,7 @@
     "prepare": "npm run clean-proto && npm run proto && npm run transpileProto",
     "lint": "eslint '**/*.ts'",
     "lint:fix": "npm run lint -- --fix",
-    "test": "$HOME/.nvm/nvm-exec jest"
+    "test": "npm run build && jest"
   },
   "author": "",
   "license": "Apache-2.0",