mirror of
https://github.com/IBM/fp-go.git
synced 2025-11-23 22:14:53 +02:00
44 lines
1.1 KiB
Go
44 lines
1.1 KiB
Go
// 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"
|
|
|
|
O "github.com/IBM/fp-go/v2/option"
|
|
"github.com/stretchr/testify/assert"
|
|
)
|
|
|
|
type ArrayType = []int
|
|
|
|
func TestTraverse(t *testing.T) {
|
|
|
|
traverse := Traverse(
|
|
O.Of[ArrayType],
|
|
O.Map[ArrayType, func(int) ArrayType],
|
|
O.Ap[ArrayType, int],
|
|
|
|
func(n int) O.Option[int] {
|
|
if n%2 == 0 {
|
|
return O.None[int]()
|
|
}
|
|
return O.Of(n)
|
|
})
|
|
|
|
assert.Equal(t, O.None[[]int](), traverse(ArrayType{1, 2}))
|
|
assert.Equal(t, O.Of(ArrayType{1, 3}), traverse(ArrayType{1, 3}))
|
|
}
|