// Copyright © 2016 Steve Francia <spf@spf13.com>.
//
// Use of this source code is governed by an MIT-style
// license that can be found in the LICENSE file.

// Viper is a application configuration system.
// It believes that applications can be configured a variety of ways
// via flags, ENVIRONMENT variables, configuration files retrieved
// from the file system, or a remote key/value store.

package viper

import (
	"reflect"
	"testing"
)

func TestCopyAndInsensitiviseMap(t *testing.T) {
	var (
		given = map[string]interface{}{
			"Foo": 32,
			"Bar": map[interface{}]interface {
			}{
				"ABc": "A",
				"cDE": "B"},
		}
		expected = map[string]interface{}{
			"foo": 32,
			"bar": map[string]interface {
			}{
				"abc": "A",
				"cde": "B"},
		}
	)

	got := copyAndInsensitiviseMap(given)

	if !reflect.DeepEqual(got, expected) {
		t.Fatalf("Got %q\nexpected\n%q", got, expected)
	}

	if _, ok := given["foo"]; ok {
		t.Fatal("Input map changed")
	}

	if _, ok := given["bar"]; ok {
		t.Fatal("Input map changed")
	}

	m := given["Bar"].(map[interface{}]interface{})
	if _, ok := m["ABc"]; !ok {
		t.Fatal("Input map changed")
	}
}