terraform/vendor/github.com/go-test/deep
Radek Simko 16ba85083f
deps: Bump github.com/go-test/deep to 1.0.3
2019-08-21 11:32:13 +01:00
..
.gitignore vendor: update to latest github.com/zclconf/go-cty 2018-10-16 19:14:11 -07:00
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CHANGES.md deps: Bump github.com/go-test/deep to 1.0.3 2019-08-21 11:32:13 +01:00
LICENSE
README.md
deep.go deps: Bump github.com/go-test/deep to 1.0.3 2019-08-21 11:32:13 +01:00
go.mod deps: Bump github.com/go-test/deep to 1.0.3 2019-08-21 11:32:13 +01:00

README.md

Deep Variable Equality for Humans

Go Report Card Build Status Coverage Status GoDoc

This package provides a single function: deep.Equal. It's like reflect.DeepEqual but much friendlier to humans (or any sentient being) for two reason:

  • deep.Equal returns a list of differences
  • deep.Equal does not compare unexported fields (by default)

reflect.DeepEqual is good (like all things Golang!), but it's a game of Hunt the Wumpus. For large maps, slices, and structs, finding the difference is difficult.

deep.Equal doesn't play games with you, it lists the differences:

package main_test

import (
	"testing"
	"github.com/go-test/deep"
)

type T struct {
	Name    string
	Numbers []float64
}

func TestDeepEqual(t *testing.T) {
	// Can you spot the difference?
	t1 := T{
		Name:    "Isabella",
		Numbers: []float64{1.13459, 2.29343, 3.010100010},
	}
	t2 := T{
		Name:    "Isabella",
		Numbers: []float64{1.13459, 2.29843, 3.010100010},
	}

	if diff := deep.Equal(t1, t2); diff != nil {
		t.Error(diff)
	}
}
$ go test
--- FAIL: TestDeepEqual (0.00s)
        main_test.go:25: [Numbers.slice[1]: 2.29343 != 2.29843]

The difference is in Numbers.slice[1]: the two values aren't equal using Go ==.