Add cli test

.github/workflows/build.yml

@@ -35,3 +35,12 @@ jobs:
       - uses: actions/checkout@v2
       - run: npm install
       - run: npm run test:browser
+  test-cli:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 12.x
+      - uses: actions/checkout@v2
+      - run: npm install
+      - run: npm run test:cli

package.json

@@ -17,16 +17,17 @@
     "build:node": "tsc -p ./tsconfig.prod.json",
     "build:browser": "tsc -p ./tsconfig.browser.json && npm run bundle && rm -rf dist.browser",
     "bundle": "webpack",
-    "client:start": "tsc -p tsconfig.prod.json && node dist/bin/cli.js",
+    "client:start": "ts-node bin/cli.ts",
     "coverage": "nyc npm run coverage:test && nyc report --reporter=lcov",
-    "coverage:test": "tape -r ts-node/register 'test/!(integration)/**/*.ts' 'test/integration/**/*.ts'",
+    "coverage:test": "npm run tape -- 'test/!(integration|cli)/**/*.ts' 'test/integration/**/*.ts'",
     "docs:build": "typedoc --tsconfig tsconfig.prod.json",
     "lint": "ethereumjs-config-lint",
     "lint:fix": "ethereumjs-config-lint-fix",
     "tape": "tape -r ts-node/register",
     "test": "npm run test:unit && npm run test:integration",
-    "test:unit": "npm run tape -- 'test/!(integration)/**/*.ts'",
+    "test:unit": "npm run tape -- 'test/!(integration|cli)/**/*.ts'",
     "test:integration": "npm run tape -- 'test/integration/**/*.ts'",
+    "test:cli": "npm run build:node && npm run tape -- 'test/cli/*.ts'",
     "test:browser": "karma start karma.conf.js"
   },
   "husky": {

test/cli/cli.spec.ts

@@ -0,0 +1,45 @@
+import tape from 'tape'
+import { spawn } from 'child_process'
+
+tape('[CLI]', (t) => {
+  t.test('should start and begin downloading blocks', (t) => {
+    const file = require.resolve('../../dist/bin/cli.js')
+    const child = spawn(process.execPath, [file])
+
+    const timeout = setTimeout(() => {
+      child.kill('SIGINT')
+    }, 120000)
+
+    const end = () => {
+      clearTimeout(timeout)
+      child.kill('SIGINT')
+      t.end()
+    }
+
+    child.stdout.on('data', (data) => {
+      const message = data.toString()
+      if (message.toLowerCase().includes('error')) {
+        t.fail(message)
+        end()
+      }
+      if (message.includes('Imported blocks')) {
+        t.pass()
+        end()
+      }
+      console.log(message) // eslint-disable-line no-console
+    })
+
+    child.stderr.on('data', (data) => {
+      const message = data.toString()
+      t.fail(message)
+      end()
+    })
+
+    child.on('close', (code) => {
+      if (code !== 0) {
+        t.fail(`child process exited with code ${code}`)
+        end()
+      }
+    })
+  })
+})