Add prototype for tests

tests/package.json

@@ -0,0 +1,39 @@
+{
+  "name": "swap-test",
+  "version": "1.0.0",
+  "description": "",
+  "main": "test.js",
+  "scripts": {
+    "build": "babel src/ -d lib/",
+    "prepublish": "yarn run build",
+    "test": "jest src --verbose --runInBand --detectOpenHandles"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "@babel/plugin-proposal-class-properties": "^7.12.1",
+    "@ledgerhq/hw-app-eth": "^5.30.0",
+    "@ledgerhq/hw-transport-http": "^4.74.2",
+    "@ledgerhq/logs": "^5.50.0",
+    "@zondax/zemu": "0.13.0",
+    "bignumber.js": "^9.0.0",
+    "bip32-path": "^0.4.2",
+    "core-js": "^3.7.0",
+    "ethereum-tx-decoder": "^3.0.0",
+    "google-protobuf": "^3.11.0",
+    "jest-serial-runner": "^1.1.0",
+    "js-sha256": "^0.9.0",
+    "regenerator-runtime": "^0.13.7",
+    "secp256k1": "^3.7.1"
+  },
+  "devDependencies": {
+    "@babel/cli": "^7.7.0",
+    "@babel/core": "^7.7.2",
+    "@babel/preset-env": "^7.7.1",
+    "@babel/preset-flow": "^7.0.0",
+    "@babel/preset-stage-0": "^7.0.0",
+    "@babel/register": "^7.7.0",
+    "flow-bin": "^0.112.0",
+    "jest": "^26.6.3"
+  }
+}