// Copyright (c) 2023 IBM Corp.
// All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package array

import (
	"testing"

	"github.com/stretchr/testify/assert"

	M "github.com/IBM/fp-go/monoid"
)

var subInt = M.MakeMonoid(func(first int, second int) int {
	return first - second
}, 0)

func TestConcatAll(t *testing.T) {

	var subAll = ConcatAll(subInt)

	assert.Equal(t, subAll([]int{1, 2, 3}), -6)

}