test_test.go

package main

import (
	"fmt"
	"testing"

	"github.com/smartystreets/assertions"
	"github.com/smartystreets/assertions/should"
	"github.com/stretchr/testify/assert"
)

const line = "--------------------------------------------------------------------------------"

type T struct {
	name string
}

func (t T) Errorf(format string, args ...interface{}) {
	fmt.Printf("%s\nOutput of %s:\n%s\n%s\n%s\n", line, t.name, line, fmt.Sprintf(format, args...), line)
}

func (t T) Error(args ...interface{}) {
	fmt.Printf("%s\nOutput of %s:\n%s\n%s\n%s\n", line, t.name, line, fmt.Sprint(args...), line)
}

func TestTest(_ *testing.T) {
	type SubStruct struct {
		A int
		B int
		C int
	}

	type Struct struct {
		Slice      []int
		Map        map[string]string
		SubStructs []SubStruct
		String     string
	}

	common := SubStruct{1, 2, 3}

	a := Struct{
		[]int{1, 2, 3},
		map[string]string{"foo": "bar", "hello": "world"},
		[]SubStruct{},
		"test",
	}
	b := Struct{
		[]int{1, 2, 3},
		map[string]string{"bar": "foo", "hello": "world"},
		[]SubStruct{},
		"test",
	}

	for i := 0; i < 20; i++ {
		a.SubStructs = append(a.SubStructs, common)
		b.SubStructs = append(b.SubStructs, common)
	}
	a.SubStructs = append(a.SubStructs, SubStruct{1, 2, 2})
	b.SubStructs = append(a.SubStructs, SubStruct{1, 2, 3})

	assertions.New(T{"github.com/smartystreets/assertions"}).So(a, should.Resemble, b)
	assert.Equal(T{"github.com/stretchr/testify/assert"}, a, b)
}