Initial Tests for Vector2D

[z3dev]

Let's keep those tests rolling in!!!!

[kaosat-dev]

Great set of tests @z3dev !
Only one issue : failing Travis build due to a single rounding error: is that test passing for you locally ?

[z3dev]

All test pass on Mac OS. I was wondering if there would be issues with rounding. We need another test for these values, something like "equal within 0.000001"

[kaosat-dev]

Since ava does not support other assertions (avajs/ava#1094)

The simplest solution is this one

const precision = 0.000001
t.deepEqual(Math.abs(expected-observed) < precision) 

and voila ! solved :)
simple and straight to the point I think
if we really want to we could wrap it for re-use

function almostEquals(t, observed, expected, precision=0.0000001){
t.deepEqual(Math.abs(expected-observed) < precision) 
}

and use it like this

almostEquals(t, observed, expected)

[z3dev]

Looks like a function is required, which is explained here... http://floating-point-gui.de/errors/comparison/

I'll add a helper for this.

[z3dev]

@kaosat-dev please review the helper function. i tested the different cases of comparisons. Seems to work fine.

[kaosat-dev]

Yup , helper is ok, and all tests are passing, well done !