Mocha: this.timeout() inside describe() doesn't work for me

[alexlatchford]

This below JS snippet is from the mocha.js website docs, "Suite specific timeouts":

describe('a suite of tests', function(){
  this.timeout(500);

  it('should take less than 500ms', function(done){
    setTimeout(done, 300);
  })

  it('should take less than 500ms as well', function(done){
    setTimeout(done, 200);
  })
})

This code example is a bit confusing, when I put the "this.timeout()" call like this I get:

C:\Dev\GitHub\alexlatchford\adfuser\src\test\api\v1\target_groups.js:274
                this.timeout(0); // Extend the timeout for this suite because we're insertin
                     ^
TypeError: Object #<Object> has no method 'timeout'
    at C:\Dev\GitHub\alexlatchford\adfuser\src\test\api\v1\target_groups.js:274:8
    at module.exports.suite.on.context.describe.context.context (C:\Users\alatchford\AppData\Roaming\npm\node_modules\mocha\lib\interfaces\bdd.js:72:7)
    at C:\Dev\GitHub\alexlatchford\adfuser\src\test\api\v1\target_groups.js:272:2
    at module.exports.suite.on.context.describe.context.context (C:\Users\alatchford\AppData\Roaming\npm\node_modules\mocha\lib\interfaces\bdd.js:72:7)
    at Object.<anonymous> (C:\Dev\GitHub\alexlatchford\adfuser\src\test\api\v1\target_groups.js:15:1)
    at Module._compile (module.js:449:26)
    at Object.Module._extensions..js (module.js:467:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
    at Module.require (module.js:362:17)
    at require (module.js:378:17)
    at Mocha.loadFiles (C:\Users\alatchford\AppData\Roaming\npm\node_modules\mocha\lib\mocha.js:137:27)
    at Array.forEach (native)
    at Mocha.loadFiles (C:\Users\alatchford\AppData\Roaming\npm\node_modules\mocha\lib\mocha.js:134:14)
    at Mocha.run (C:\Users\alatchford\AppData\Roaming\npm\node_modules\mocha\lib\mocha.js:278:31)
    at Object.<anonymous> (C:\Users\alatchford\AppData\Roaming\npm\node_modules\mocha\bin\_mocha:324:7)
    at Module._compile (module.js:449:26)
    at Object.Module._extensions..js (module.js:467:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
    at Module.runMain (module.js:492:10)
    at process.startup.processNextTick.process._tickCallback (node.js:245:9)

It works if I put it inside my before() for that group of tests, which incidentally was what I intended anyway, but I think either the docs need clarifying or the error message investigating :)

Cheers,
Alex

[rweng]

+1

[Thomasdezeeuw]

I have the same problem with the "before all" hook. It graps the timeout that I specified globally in stead of the one in the function with this.timeout(2000);

[ghost]

Hello, are you there? Can someone fix this? I found out two places in code where this is problem, probably - timeout methods calling other timeout methods, but not doing apply(this, arguments) but passing the first one by hand, thus killing the if length === 0 readTheValue semantics.

As the system is pretty complex, you know better if adding apply there is enough, if yes, the fix should be easy.

[dmakhno]

+1

[travisjeffery]

i think i recently fixed this. your code worked for me too:

describe('something', function(){
  this.timeout(500);

  it('should take less than 500', function(done){
    setTimeout(done, 300);
  });

  it('should take less than 500 too', function(done){
    setTimeout(done, 200);
  });
})

🍕  mocha


  something
    ✓ should take less than 500 (301ms)
    ✓ should take less than 500 too (201ms)


  2 passing (510ms)

[dmakhno]

@travisjeffery,

I voted for this

I have the same problem with the "before all" hook.

all

before(function(){
  this.timeout(500);
})

describe('something', function(){
  it('should take less than 500', function(done){
    setTimeout(done, 300);
  });

  it('should take less than 500 too', function(done){
    setTimeout(done, 200);
  });
})

beforeEach(function(){
  this.timeout(500);
})

describe('something', function(){
  it('should take less than 500', function(done){
    setTimeout(done, 300);
  });

  it('should take less than 500 too', function(done){
    setTimeout(done, 200);
  });
})

describe('something', function(){  
  beforeEach(function(){
    this.timeout(500);
  })

  it('should take less than 500', function(done){
    setTimeout(done, 300);
  });

  it('should take less than 500 too', function(done){
    setTimeout(done, 200);
  });
})

returns this

mocha --version
   1.20.1

mocha --timeout 100

  something
    1) should take less than 500
    2) should take less than 500 too


  0 passing (215ms)
  2 failing

  1) something should take less than 500:
     Error: timeout of 100ms exceeded

  2) something should take less than 500 too:
     Error: timeout of 100ms exceeded

my expectations that 500 should be applied for each test

Should I create separate issue?

[travisjeffery]

ok i'm gonna close this then. hopefully you can look into making a pr rather than an issue for the befores.

[ghost]

Please reopen, this.timeout() still fails, see https://github.com/visionmedia/mocha/blob/master/lib/context.js#L39 calling directly with ms argument thus making length of arguments always 1 in versus https://github.com/visionmedia/mocha/blob/master/lib/runnable.js#L66 which can never be true and return the value.

[travisjeffery]

the case where that would fail is if you're getting the value of the timeout not setting it

[ghost]

Yes, that's what I had a problem with in the first place.

"Dr. Travis Jeffery" [email protected]ísal/a:

thecasewherethatwouldfailisifyou'regettingthevalueofthetimeoutnotsettingitReplytothisemaildirectlyorviewitonGitHub.

[travisjeffery]

@herby fixed in #1282

[ghost]

@travisjeffery thanks

[ghost]

fyi, still seeing this in 3.1.2

describe('something', () => {
  this.timeout(5000);
  it('should work', done => {
    setTimeout(done, 2000);
  });
});

[Macil]

@JacobRodriguezSSI By using an arrow function, you're not using the this value passed to describe's callback. You should use a normal function instead.

[ghost]

@AgentME: You're right, sorry. In my haste I didn't see the other issue that pointed out this fact.

[centigrade-thomas-becker]

For posterity, you can use arrow functions and set the timeout like this:

it('some test', (done) => {
    // ...
}).timeout(5000);

[selvakumar1994]

@travisjeffery i used the below script but i got the same Timeout exceed error.

Myscript :

describe("getBillingDetail", async function (){
this.timeout(55000);
it.only("check given valid Jobname",async function (done){
this.timeout(55000);
var result = await url.getBillingDetail('12254785565647858');
console.log(result);
assert.equal(result,true);
});
});

Error: Timeout of 55000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves.