add a "global entropy" test for --help

package.json

@@ -4,11 +4,12 @@
   "description": "cli and tui for interacting with the entropy protocol",
   "type": "module",
   "scripts": {
-    "start": "yarn build && npm install -g && entropy",
+    "start": "yarn build:global && entropy",
     "start:debug": "DEBUG=@entropyxyz/cli yarn start",
     "build": "tsup",
-    "test": "yarn test:types && yarn test:ts && yarn test:only",
+    "build:global": "tsup && npm install -g",
     "lint": "eslint . --ext .ts --fix",
+    "test": "yarn test:types && yarn build:global && yarn test:ts && yarn test:only",
     "test:only": "./dev/bin/test-only.sh",
     "test:ts": "yarn removedb && ./dev/bin/test-ts.sh",
     "test:types": "tsc --project tsconfig.json",

tests/global.test.ts

@@ -0,0 +1,14 @@
+import test from 'tape'
+
+import {
+  promiseRunner,
+  execPromise
+} from './testing-utils'
+
+test('Global: entropy --help', async (t) => {
+  /* Setup */
+  const run = promiseRunner(t)
+
+  await run('should run the global entropy --help', execPromise('entropy --help'))
+  t.end()
+})

tests/testing-utils/index.ts

@@ -1,3 +1,4 @@
+import { exec } from 'node:child_process'
 // @ts-ignore
 import { spinNetworkUp, spinNetworkDown, } from "@entropyxyz/sdk/testing"
 import * as readline from 'readline'
@@ -11,6 +12,21 @@ export {
 export * from './constants'
 export * from './setup-test'
 
+/* Promise wrapper function of [exec](https://nodejs.org/api/child_process.html#child_processexeccommand-options-callback)
+ *
+ * @param {string} command - a string command to run in child process
+ */
+
+export function execPromise (command: string): Promise<any> {
+  return new Promise((res, rej) => {
+    exec(command, (error, stdout, stderr) => {
+      if (!error && !stderr) res(stdout)
+      else if (!!stderr && !error) rej(stderr)
+      else if (!!error) rej(error)
+    })
+  })
+}
+
 /* Helper for wrapping promises which makes it super clear in logging if the promise
  * resolves or threw.
  *