mirror of
https://github.com/IBM/fp-go.git
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108 lines
2.7 KiB
Go
108 lines
2.7 KiB
Go
// Copyright (c) 2023 IBM Corp.
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// All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package array
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import (
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"fmt"
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"testing"
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O "github.com/IBM/fp-go/v2/option"
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"github.com/stretchr/testify/assert"
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)
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func TestFindFirstWithIndex(t *testing.T) {
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src := []int{1, 2, 3, 4, 5}
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finder := FindFirstWithIndex(func(i, x int) bool {
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return i > 2 && x%2 == 0
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})
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result := finder(src)
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assert.Equal(t, O.Some(4), result)
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notFound := FindFirstWithIndex(func(i, x int) bool {
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return i > 10
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})
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assert.Equal(t, O.None[int](), notFound(src))
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}
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func TestFindFirstMap(t *testing.T) {
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src := []string{"a", "42", "b", "100"}
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finder := FindFirstMap(func(s string) O.Option[int] {
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if len(s) > 1 {
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return O.Some(len(s))
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}
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return O.None[int]()
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})
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result := finder(src)
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assert.Equal(t, O.Some(2), result)
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}
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func TestFindFirstMapWithIndex(t *testing.T) {
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src := []string{"a", "b", "c", "d"}
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finder := FindFirstMapWithIndex(func(i int, s string) O.Option[string] {
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if i > 1 {
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return O.Some(fmt.Sprintf("%d:%s", i, s))
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}
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return O.None[string]()
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})
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result := finder(src)
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assert.Equal(t, O.Some("2:c"), result)
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}
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func TestFindLast(t *testing.T) {
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src := []int{1, 2, 3, 4, 5}
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finder := FindLast(func(x int) bool { return x%2 == 0 })
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result := finder(src)
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assert.Equal(t, O.Some(4), result)
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notFound := FindLast(func(x int) bool { return x > 10 })
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assert.Equal(t, O.None[int](), notFound(src))
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}
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func TestFindLastWithIndex(t *testing.T) {
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src := []int{1, 2, 3, 4, 5}
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finder := FindLastWithIndex(func(i, x int) bool {
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return i < 3 && x%2 == 0
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})
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result := finder(src)
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assert.Equal(t, O.Some(2), result)
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}
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func TestFindLastMap(t *testing.T) {
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src := []string{"a", "42", "b", "100"}
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finder := FindLastMap(func(s string) O.Option[int] {
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if len(s) > 1 {
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return O.Some(len(s))
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}
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return O.None[int]()
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})
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result := finder(src)
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assert.Equal(t, O.Some(3), result)
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}
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func TestFindLastMapWithIndex(t *testing.T) {
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src := []string{"a", "b", "c", "d"}
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finder := FindLastMapWithIndex(func(i int, s string) O.Option[string] {
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if i < 3 {
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return O.Some(fmt.Sprintf("%d:%s", i, s))
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}
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return O.None[string]()
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})
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result := finder(src)
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assert.Equal(t, O.Some("2:c"), result)
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}
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// Made with Bob
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