display diff in reverse

[komuw]

If you have a program like (https://go.dev/play/p/6gWHICoz0xd):

got := "hello"
want := "hell"
attest.Equal(t, got, want)

and you run it, you get a diff like:

    prog.go:12: got != want
        diff (+got, -want):
          string(
        -   "hell",
        +   "hello",
          )

In attest all the functions like Equal take got as the first argument and then want. So I would expect that when it comes to displaying the diff, it would follow the same order. ie, got is displayed first and then want.
However the diff displays the want first(in the example above; - "hell",)

[akshayjshah]

Hi @komuw! Sorry for the delay, I was on vacation for a bit.

cmp.Diff takes its arguments in the opposite order. The printed diff in your example is correct: compared to the expected result, you're missing "hell" and have "hello" instead.

[komuw]

I was talking about the order(or sequence). The signature of attest.Equal is;

attest.Equal(t, got, want)
                ^      ^
       got is first    want is second

and in the failure message;

diff (+got, -want):
        ^      ^
 got is first  want is second

and in the diff;

string(- "hell", + "hello", )
           ^         ^
want is first got is second

so in the diff, the sequence is flipped: want comes first

But it is a minor thing and I'm happy to close this.

Thanks for the awesome library!