solved

dataDir = path.normalize(utils.controllerDir + '/iobroker-data/')

I found the problem here.

 * @param {Partial<ioBroker.AdapterOptions>} [options]
 */
function startAdapter(options) {
	// Create the adapter and define its methods
	dataDir = path.normalize(path.join(utils.controllerDir, require(path.join(utils.controllerDir, 'lib', 'tools.js')).getDefaultDataDir()));

	return adapter = utils.adapter(Object.assign({}, options, {
		name: "serve",

		// The ready callback is called when databases are connected and adapter received configuration.
		// start here!
		ready: main, // Main method defined below for readability

		// is called when adapter shuts down - callback has to be called under any circumstances!
		unload: (callback) => {
			try {
				adapter.log.info("cleaned everything up...");
				callback();
			} catch (e) {
				callback();
			}
		},

I wrote an adapter, but the following error occurred during automated testing, I need a little help

travis-ci log
github source

"@iobroker/testing": "^1.2.5",

The command "npm run test:package" exited with 0.
1.37s$ npm run test:unit
> iobroker.serve@0.0.1 test:unit /home/travis/build/smarthomefans/ioBroker.serve
> mocha test/unit --exit
  Test the adapter (in a mocked environment)
    1) The adapter starts in normal mode
    2) The adapter starts in compact mode
  0 passing (78ms)
  2 failing
  1) Test the adapter (in a mocked environment)
       The adapter starts in normal mode:
     Error: Cannot find module '/home/travis/build/smarthomefans/iobroker.js-controller/lib/tools.js'
      at loadModuleInternal (node_modules/@iobroker/testing/build/tests/unit/harness/loader.js:166:26)
      at Module.fakeRequire [as require] (node_modules/@iobroker/testing/build/tests/unit/harness/loader.js:36:16)
      at require (internal/module.js:20:19)
      at startAdapter (main.js:36:58)
      at __dirname (main.js:151:2)
      at Object.<anonymous> (main.js:153:3)
      at Module.module._compile (node_modules/@iobroker/testing/build/tests/unit/harness/loader.js:158:24)
      at Object.replaceJsLoader (node_modules/@iobroker/testing/build/tests/unit/harness/loader.js:162:9)
      at require (internal/module.js:20:19)
      at loadModuleInternal (node_modules/@iobroker/testing/build/tests/unit/harness/loader.js:166:26)
      at Object.loadModuleInHarness (node_modules/@iobroker/testing/build/tests/unit/harness/loader.js:185:12)
      at Object.<anonymous> (node_modules/@iobroker/testing/build/tests/unit/harness/startMockAdapter.js:79:45)
      at next (native)
      at /home/travis/build/smarthomefans/ioBroker.serve/node_modules/@iobroker/testing/build/tests/unit/harness/startMockAdapter.js:8:71
      at __awaiter (node_modules/@iobroker/testing/build/tests/unit/harness/startMockAdapter.js:4:12)
      at Object.startMockAdapter (node_modules/@iobroker/testing/build/tests/unit/harness/startMockAdapter.js:36:12)
      at Context.<anonymous> (node_modules/@iobroker/testing/build/tests/unit/index.js:65:83)
      at next (native)
      at /home/travis/build/smarthomefans/ioBroker.serve/node_modules/@iobroker/testing/build/tests/unit/index.js:9:71
      at __awaiter (node_modules/@iobroker/testing/build/tests/unit/index.js:5:12)
      at Context.<anonymous> (node_modules/@iobroker/testing/build/tests/unit/index.js:61:20)
  2) Test the adapter (in a mocked environment)
       The adapter starts in compact mode:
     Error: Cannot find module '/home/travis/build/smarthomefans/iobroker.js-controller/lib/tools.js'
      at loadModuleInternal (node_modules/@iobroker/testing/build/tests/unit/harness/loader.js:166:26)
      at Module.fakeRequire [as require] (node_modules/@iobroker/testing/build/tests/unit/harness/loader.js:36:16)
      at require (internal/module.js:20:19)
      at startAdapter (main.js:36:58)
      at Object.<anonymous> (node_modules/@iobroker/testing/build/tests/unit/harness/startMockAdapter.js:89:17)
      at next (native)
      at /home/travis/build/smarthomefans/ioBroker.serve/node_modules/@iobroker/testing/build/tests/unit/harness/startMockAdapter.js:8:71
      at __awaiter (node_modules/@iobroker/testing/build/tests/unit/harness/startMockAdapter.js:4:12)
      at Object.startMockAdapter (node_modules/@iobroker/testing/build/tests/unit/harness/startMockAdapter.js:36:12)
      at Context.<anonymous> (node_modules/@iobroker/testing/build/tests/unit/index.js:80:105)
      at next (native)
      at /home/travis/build/smarthomefans/ioBroker.serve/node_modules/@iobroker/testing/build/tests/unit/index.js:9:71
      at __awaiter (node_modules/@iobroker/testing/build/tests/unit/index.js:5:12)
      at Context.<anonymous> (node_modules/@iobroker/testing/build/tests/unit/index.js:76:24)
npm ERR! Linux 4.4.0-101-generic
npm ERR! argv "/home/travis/.nvm/versions/node/v6.17.1/bin/node" "/home/travis/.nvm/versions/node/v6.17.1/bin/npm" "run" "test:unit"
npm ERR! node v6.17.1
npm ERR! npm  v3.10.10
npm ERR! code ELIFECYCLE
npm ERR! iobroker.serve@0.0.1 test:unit: `mocha test/unit --exit`
npm ERR! Exit status 2
npm ERR! 
npm ERR! Failed at the iobroker.serve@0.0.1 test:unit script 'mocha test/unit --exit'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the iobroker.serve package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     mocha test/unit --exit
npm ERR! You can get information on how to open an issue for this project with:
npm ERR!     npm bugs iobroker.serve
npm ERR! Or if that isn't available, you can get their info via:
npm ERR!     npm owner ls iobroker.serve
npm ERR! There is likely additional logging output above.
npm ERR! Please include the following file with any support request:
npm ERR!     /home/travis/build/smarthomefans/ioBroker.serve/npm-debug.log
The command "npm run test:unit" exited with 1.

@Bluefox