test(server): more reliable test for server

server.test.js

@@ -0,0 +1,33 @@
+const fs = require('fs')
+const path = require('path')
+const serverMod = require('./server')
+
+/** @type {import("express").Express & serverMod.ExpressExtension} */
+let app
+
+before(async () => {
+  app = await serverMod.serveNcmApi({})
+
+  if (app.server && app.server.address) {
+    const addr = app.server.address()
+    if (addr && typeof addr === 'object' && 'port' in addr) {
+      global.host = `http://localhost:${addr.port}`
+      return
+    }
+  }
+
+  throw new Error('failed to set up host')
+})
+
+after((done) => {
+  if (app.server) {
+    app.server.close(done)
+    return
+  }
+
+  throw new Error('failed to set up server')
+})
+
+fs.readdirSync(path.join(__dirname, 'test')).forEach((file) => {
+  require(path.join(__dirname, 'test', file))
+})