go-cmp custom comparer issue

go-cmp-custom-comparer.go

package main

import (
	"fmt"
	"github.com/google/go-cmp/cmp"
	"time"
)

type MyTime time.Time
type Foo struct {
	Bar     string
	Created MyTime
}

func main() {
	a := Foo{
		Bar:     "this is a",
		Created: MyTime(time.Now()),
	}

	b := Foo{
		Bar:     "this is b",
		Created: MyTime(time.Now()),
	}

	comparer := cmp.Comparer(func(a, b Foo) bool {
		return time.Time(a.Created).Equal(time.Time(b.Created))
	})

	if !cmp.Equal(a, b, comparer) {
		fmt.Printf("not equal: %s", cmp.Diff(a, b))
	} else {
		fmt.Printf("all good")
	}
}