问题
I'm starting with tests in Node. Using mocha, chai and nock (to intercept external HTTP api calls).
I have written 3 tests, all of them are a pass, however, when I added the 3rd test, mocha stopped exiting after running the tests, with no error or indication of anything wrong.
If I comment the 3rd test, mocha exits just fine.
This is the test causing the 'issue':
describe('tokenizer.processFile(req, \'tokenize\')', () => {
it('should tokenize a file', async () => {
req = {
file: {
originalname: 'randomcards.txt',
buffer: cardsFile_buffer
},
user: {
displayName: user
}
};
expect(Buffer.from(await tokenizer.processFile(req, 'tokenize'))).to.deep.equal(tokensFile_buffer);
});
});
Again, that test is a pass, which baffles me.
Here's the code of tokenizer.processFile:
processFile: function(req, whatTo){
combinedLogger.info(`Request to ${whatTo} ${req.file.originalname} received. Made by: ${req.user.displayName}`);
return new Promise(function(resolve, reject){
const lines = [], responses = [];
const lineReader = require('readline').createInterface({
input: require('streamifier').createReadStream(req.file.buffer)
});
lineReader.on('line', line => {
lines.push(line);
});
lineReader.on('close', async () => {
//process every line sequentially
try {
//ensure DB connected to mass insert
await db_instance.get_pool();
for(const line of lines) {
var response;
req.current_value = line;
if (whatTo == 'tokenize'){
response = await Tokenize(line);
db_instance.insertAction(req, 'tokenize', response);
}
else if (whatTo == 'detokenize'){
combinedLogger.info(`Request to detokenize ${line} received. Made by: ${req.user.displayName}`);
response = await Detokenize(line);
db_instance.insertAction(req, 'detokenize', line);
}
responses.push(response);
}
resolve(responses.join("\r\n"));
}
catch(error){
reject(error);
}
});
});
}
Functions Tokenize(value) and Detokenize(value) are also called in the other 2 tests, which when run, mocha exits just fine.
Any idea what's causing this?
Mocha version: 5.1.1
回答1:
I know it is a bit late to answer this, but I was facing a similar problem and saw your post.
In mocha 4.0.0, they changed the behavior of tests on finalization.From here:
If the mocha process is still alive after your tests seem "done", then your tests have scheduled something to happen (asynchronously) and haven't cleaned up after themselves properly. Did you leave a socket open?
In your case, it seems like a call to createReadStream()
was never closed.
So, you have 2 options:
Option A: Close the fs and other streams open (recommended)
Option B: Run mocha with the --exit
option.
来源:https://stackoverflow.com/questions/50372866/mocha-not-exiting-after-test