[Swift-devel] assertEqual

[Mihael Hategan]

On Mon, 2015-04-06 at 09:38 -0500, Tim Armstrong wrote:
> Right, the tests for those things in the Swift test suite are like:
> 
> assert(abs(sin(PI/2) - 1.0) < 1e-15, "sin");
> 
> Which is a little less convenient.
> 
> I think if we want almost equal semantics we could have assertAlmostEqual
> with a tolerance parameter

That's a choice.

I personally think that approximate equality in numerics is such a
widespread issue, that there wouldn't be much confusion.

Mihael

> 
> -Tim
> 
> On 5 April 2015 at 21:17, Mihael Hategan <hategan at mcs.anl.gov> wrote:
> 
> > Hi,
> >
> > I found it useful to have a tolerance parameter for assertEqual(float,
> > float).
> >
> > Checks like assertEqual(tan(x), sin(x) / cos(x)) are otherwise not going
> > to work very well.
> >
> > Mihael
> >
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