松露不能同時執行兩個文件

我的測試文件夾中有兩個文件，當我執行時，truffle test我得到了第一個文件的結果，但是當它到達第二個文件時，ganache 失敗了，我得到了下面的錯誤。我試過一次只放置一個文件並執行，它對它們都執行良好，但不能一起執行。

 ProviderError: 
Could not connect to your Ethereum client with the following parameters:
   - host       > 127.0.0.1
   - port       > 7545
   - network_id > 5777
Please check that your Ethereum client:
   - is running
   - is accepting RPC connections (i.e., "--rpc" or "--http" option is used in geth)
   - is accessible over the network
   - is properly configured in your Truffle configuration file (truffle-config.js)

     at C:\Users\AH30007\AppData\Roaming\npm\node_modules\truffle\build\webpack:\packages\provider\wrapper.js:73:1
     at C:\Users\AH30007\AppData\Roaming\npm\node_modules\truffle\build\webpack:\packages\provider\wrapper.js:102:1
     at XMLHttpRequest.request.onreadystatechange (C:\Users\AH30007\AppData\Roaming\npm\node_modules\truffle\build\webpack:\node_modules\web3\node_modules\web3-providers-http\lib\index.js:98:1)
     at XMLHttpRequestEventTarget.dispatchEvent (C:\Users\AH30007\AppData\Roaming\npm\node_modules\truffle\build\webpack:\node_modules\xhr2-cookies\dist\xml-http-request-event-target.js:34:1)
     at XMLHttpRequest.exports.modules.996763.XMLHttpRequest._setReadyState (C:\Users\AH30007\AppData\Roaming\npm\node_modules\truffle\build\webpack:\node_modules\xhr2-cookies\dist\xml-http-request.js:208:1)
     at XMLHttpRequest.exports.modules.996763.XMLHttpRequest._onHttpRequestError (C:\Users\AH30007\AppData\Roaming\npm\node_modules\truffle\build\webpack:\node_modules\xhr2-cookies\dist\xml-http-request.js:349:1)
     at ClientRequest.<anonymous> (C:\Users\AH30007\AppData\Roaming\npm\node_modules\truffle\build\webpack:\node_modules\xhr2-cookies\dist\xml-http-request.js:252:47)      at Socket.socketOnEnd (_http_client.js:493:9)
     at endReadableNT (internal/streams/readable.js:1327:12)
     at processTicksAndRejections (internal/process/task_queues.js:80:21)

Ganache 失敗並拋出此錯誤

TypeError: Cannot read property 'transactions' of null
   at ProjectsWatcher.handleBlock (C:\Users\AH30007\AppData\Local\Programs\Ganache\resources\static\node\truffle-integration\projectsWatcher.js:180:38)
   at processTicksAndRejections (internal/process/task_queues.js:93:5)
   at Subscription.<anonymous> (C:\Users\AH30007\AppData\Local\Programs\Ganache\resources\static\node\truffle-integration\projectsWatcher.js:57:9)

像這樣對測試文件進行編號 // 2_Test_First // 3_Test_Second 應該可以解決問題，松露很難辨別首先執行哪個文件，因此通過對其進行編號，您可以告訴它以什麼順序執行。

希望這可以幫助

它可以是對合約函式的呼叫，而無需等待，也可以是對函式的另一個呼叫：

//it's gonna crash
web3.eth.sendTransaction({from:accounts[0], to:accounts[1], value: web3.utils.toWei("2", "ether")});
let b = await web3.eth.getBalance(accounts[1]);

正確的方法：

await web3.eth.sendTransaction({from:accounts[0], to:accounts[1], value: web3.utils.toWei("2", "ether")});
let b = await web3.eth.getBalance(accounts[1]);

引用自：https://ethereum.stackexchange.com/questions/107030