Add missing unit tests

.github/workflows/test.yml

@@ -1,9 +1,8 @@
-name: Unit tests
-on:
-  pull_request:
-  push:
-    branches:
-      - main
+name: Unit tests & Coverage
+on: [push, pull_request]
+
+env:
+  COVERALLS_REPO_TOKEN: ${{ secrets.COVERALLS_REPO_TOKEN }}
 
 jobs:
   test:
@@ -35,7 +34,7 @@ jobs:
           rm -rf .yarncache
           yarn cache clean
       - name: Run tests
-        run: 'npm run test'
+        run: yarn run test:coverage
 
       - name: Comment in failing tests
         uses: mattallty/jest-github-action@v1.0.3
@@ -45,3 +44,9 @@ jobs:
         with:
           test-command: 'echo unit tests already executed'
           coverage-comment: false
+
+      - name: Coveralls Report
+        uses: coverallsapp/github-action@1.1.3
+        if: success() || failure()
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}

.gitignore

@@ -1,2 +1,5 @@
 node_modules
-dist
+dist
+coverage
+.coveralls.yml
+jest.results.json

README.md

@@ -4,6 +4,7 @@
 
 # CoW protocol SDK
 [![Styled With Prettier](https://img.shields.io/badge/code_style-prettier-ff69b4.svg)](https://prettier.io/)
+[![Coverage Status](https://coveralls.io/repos/github/cowprotocol/cow-sdk/badge.svg?branch=main)](https://coveralls.io/github/cowprotocol/cow-sdk?branch=main)
 
 
 > ⚠️⚠️ THE SDK IS IN Beta ⚠️⚠️

package.json

@@ -16,6 +16,7 @@
     "lint": "eslint src",
     "format": "prettier --write \"src/**/*.+(ts|json)\"",
     "test": "jest",
+    "test:coverage": "jest --coverage --json --outputFile=jest.results.json && cat ./coverage/lcov.info | coveralls",
     "prepare": "npm run build",
     "prepublishOnly": "npm test && npm run lint",
     "preversion": "npm run lint",
@@ -36,18 +37,28 @@
     "@types/jest": "^27.0.3",
     "@typescript-eslint/eslint-plugin": "^5.9.0",
     "@typescript-eslint/parser": "^5.9.0",
+    "coveralls": "^3.1.1",
     "eslint": "^8.6.0",
     "eslint-config-prettier": "^8.3.0",
     "eslint-plugin-prettier": "^4.0.0",
+    "eth-testing": "^1.0.0",
     "jest": "^27.3.1",
+    "jest-fetch-mock": "^3.0.3",
     "microbundle": "^0.14.2",
     "prettier": "^2.5.1"
   },
+  "jest": {
+    "automock": false,
+    "resetMocks": false,
+    "setupFiles": [
+      "./setupTests.js"
+    ]
+  },
   "keywords": [
     "cow",
     "cow-protocol",
     "sdk",
     "crypto",
     "typescript"
   ]
-}
+}

setupTests.js

@@ -0,0 +1,17 @@
+import fetchMock from 'jest-fetch-mock'
+import log from 'loglevel'
+import { generateTestingUtils } from 'eth-testing'
+
+jest.setMock('cross-fetch', fetchMock)
+jest.mock('@gnosis.pm/gp-v2-contracts')
+
+const testingUtils = generateTestingUtils({ providerType: 'MetaMask' })
+testingUtils.mockChainId('0x4') //Rinkeby
+
+global.window = global
+global.window.ethereum = testingUtils.getProvider()
+
+log.info = jest.fn
+log.debug = jest.fn
+log.error = jest.fn
+log.setLevel = jest.fn

src/CowSdk.ts

@@ -23,7 +23,7 @@ export class CowSdk<T extends ChainId> {
     log.setLevel(options.loglevel || 'error')
   }
 
-  updateChainId = (chainId: T) => {
+  updateChainId = (chainId: ChainId) => {
     this.context.updateChainId(chainId)
   }