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https://github.com/IBM/fp-go.git
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101 lines
2.7 KiB
Go
101 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 record
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import (
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"testing"
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F "github.com/IBM/fp-go/function"
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OP "github.com/IBM/fp-go/optics/optional"
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O "github.com/IBM/fp-go/option"
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ON "github.com/IBM/fp-go/option/number"
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RR "github.com/IBM/fp-go/record"
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"github.com/stretchr/testify/assert"
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)
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type (
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GenericMap = map[string]any
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)
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func TestOptionalRecord(t *testing.T) {
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// sample record
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r := RR.Singleton("key", "value")
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// extract values
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optKey := AtKey[string, string]("key")
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optKey1 := AtKey[string, string]("key1")
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// check if we can get the key
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assert.Equal(t, O.Of("value"), optKey.GetOption(r))
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assert.Equal(t, O.None[string](), optKey1.GetOption(r))
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// check if we can set a value
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r1 := optKey1.Set("value1")(r)
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// check if we can get the key
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assert.Equal(t, O.Of("value"), optKey.GetOption(r))
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assert.Equal(t, O.None[string](), optKey1.GetOption(r))
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// check if we can get the key
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assert.Equal(t, O.Of("value"), optKey.GetOption(r1))
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assert.Equal(t, O.Of("value1"), optKey1.GetOption(r1))
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}
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func TestOptionalWithType(t *testing.T) {
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// sample record
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r := RR.Singleton("key", "1")
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// convert between string and int
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// writes a key
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optStringKey := AtKey[string, string]("key")
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optIntKey := F.Pipe1(
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optStringKey,
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OP.IChain[map[string]string](ON.Atoi, ON.Itoa),
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)
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// test the scenarions
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assert.Equal(t, O.Of("1"), optStringKey.GetOption(r))
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assert.Equal(t, O.Of(1), optIntKey.GetOption(r))
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// modify
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r1 := optIntKey.Set(2)(r)
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assert.Equal(t, O.Of("2"), optStringKey.GetOption(r1))
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assert.Equal(t, O.Of(2), optIntKey.GetOption(r1))
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}
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// func TestNestedRecord(t *testing.T) {
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// // some sample data
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// x := GenericMap{
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// "a": GenericMap{
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// "b": "1",
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// },
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// }
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// // accessor for first level
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// optA := F.Pipe1(
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// AtKey[string, any]("a"),
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// OP.IChainAny[GenericMap, GenericMap](),
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// )
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// optB := F.Pipe2(
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// AtKey[string, any]("b"),
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// OP.IChainAny[GenericMap, string](),
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// OP.IChain[GenericMap](ON.Atoi, ON.Itoa),
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// )
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// // go directly to b
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// optAB := F.Pipe1(
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// optA,
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// OP.Compose[GenericMap](optB),
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// )
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// // access the value of b
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// assert.Equal(t, O.Of(1), optAB.GetOption(x))
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// }
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