Add testify support

[criloz]

add support to https://github.com/stretchr/testify implements Errorf function

[criloz]

Example:

package foobar

import (
    "testing"
    . "github.com/franela/goblin"
    "github.com/stretchr/testify/assert"
)

func Test(t *testing.T) {
    g := Goblin(t)

    g.Describe("lala", func() {
        g.It("lslslslsls", func() {
            assert.Equal(g, 1, 10)
        })
    })
}

[marcosnils]

You're adding code that's not tested :S

[criloz]

@marcosnils can you tell where do you test your Fail function?, I try to look in the code but for my time schedule I could not find the test case, the Errorf function is almost the same, with the adition that allow format strings

[marcosnils]

@marcosnils can you tell where do you test your Fail function?, I try to look in the code but for my time schedule I could not find the test case, the Errorf function is almost the same, with the adition that allow format strings

I get it, but we can't add code without tests as someone will have to support this in the future. Here's how we test the Fail func:

https://github.com/franela/goblin/blob/b50404691661f34b0cea76cb2704fe5c0ccec90f/goblin_test.go#L160-L182

[marcosnils]

@criloz Fail and Failf have almost the same code. Can you please extract the common parts function so we don't have duplicated code?

[criloz]

@marcosnils sure, will work on that tomorrow. also update the readme with the testify support example

[marcosnils]

Amazing!. Thx a lot!. We're almost there :D

[charleswhchan]

Is this feature complete?

[alexdreptu]

What happened to this?

[marcosnils]

@alexdreptu seems like it never got completed and got abandoned.

[artem-malko]

@marcosnils as I can see, it is completed! No duplicated code) May be it is ok to merge it?)

[artem-malko]

I've checked it locally — works perfectly!)

[schmurfy]

I created #85 and fixed the 2016 issue with this pr

[marcosnils]

Closed by #85