mochajs / mocha / 6835

94%

main: 94%

push

travis-ci

Throw a descriptive error when a non-function is given to a runnable (#4133)

Given a test such as:

```js
it('foobars', 4);
```

mocha used to throw the following error: `fn.call is not a function`.

While technically true, I have personally spent some minutes of my life chasing
what looked like a bug in the test itself, and not in the call to `it`. A more
descriptive error message helps bring attention to where the problem originates.

(Thanks to [ssube](https://github.com/ssube) for helping with the error wording.)

1011 of 1179 branches covered (85.75%)

3 of 3 new or added lines in 1 file covered. (100.0%)

2743 of 2954 relevant lines covered (92.86%)

692.51 hits per line