Diffing string checker

[roger peppe]

Nice. FWIW I have a related tool that tries to help find where a regexp
mismatch has happened. It parses the output of gocheck, so it's
probably not that useful to non-acme users but you might want
to consider including the approach (http://paste.ubuntu.com/15195795/)
for fancycheck.Matches and ErrorMatches, perhaps, to highlight where
the mismatch starts.

On 25 February 2016 at 06:26, Andrew Wilkins
<andrew.wilkins at canonical.com> wrote:
> Howdy,
>
> Occasionally I'll change a test, and some string equality test will fail
> with a wall of text. Sometimes we shouldn't be checking the whole string,
> but sometimes it's legitimate to do so, and it can be difficult/tedious to
> spot the differences.
>
> I've just written a checker which diffs the two string args, and colourises
> the output. You may find it useful. I'm using red/green background, but I
> also added bold for insertions, strike-through for deletions, in case you're
> red/green colour blind. My terminal doesn't do strike-through, and your's
> probably doesn't either. Anyway, the important thing is you can see the
> difference between bits that are the same vs. insertions/deletions.
>
> Code is at github.com/axw/fancycheck. Just replace
>     c.Assert("x", gc.Equals, "y")
> with
>     c.Assert("x", fancycheck.StringEquals, "y")
>
> Cheers,
> Andrew
>
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