mirror of
https://github.com/IBM/fp-go.git
synced 2025-08-10 22:31:32 +02:00
74 lines
2.0 KiB
Go
74 lines
2.0 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 readfile
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"testing"
|
|
|
|
A "github.com/IBM/fp-go/array"
|
|
R "github.com/IBM/fp-go/context/readerioeither"
|
|
"github.com/IBM/fp-go/context/readerioeither/file"
|
|
E "github.com/IBM/fp-go/either"
|
|
F "github.com/IBM/fp-go/function"
|
|
IO "github.com/IBM/fp-go/io"
|
|
J "github.com/IBM/fp-go/json"
|
|
"github.com/stretchr/testify/assert"
|
|
)
|
|
|
|
type RecordType struct {
|
|
Data string `json:"data"`
|
|
}
|
|
|
|
// TestReadSingleFile reads the content of a file from disk and parses it into
|
|
// a struct
|
|
func TestReadSingleFile(t *testing.T) {
|
|
|
|
data := F.Pipe2(
|
|
file.ReadFile("./data/file.json"),
|
|
R.ChainEitherK(J.Unmarshal[RecordType]),
|
|
R.ChainFirstIOK(IO.Logf[RecordType]("Log: %v")),
|
|
)
|
|
|
|
result := data(context.Background())
|
|
|
|
assert.Equal(t, E.Of[error](RecordType{"Carsten"}), result())
|
|
}
|
|
|
|
func idxToFilename(idx int) string {
|
|
return fmt.Sprintf("./data/file%d.json", idx+1)
|
|
}
|
|
|
|
// TestReadMultipleFiles reads the content of a multiple from disk and parses them into
|
|
// structs
|
|
func TestReadMultipleFiles(t *testing.T) {
|
|
|
|
data := F.Pipe2(
|
|
A.MakeBy(3, idxToFilename),
|
|
R.TraverseArray(F.Flow3(
|
|
file.ReadFile,
|
|
R.ChainEitherK(J.Unmarshal[RecordType]),
|
|
R.ChainFirstIOK(IO.Logf[RecordType]("Log Single: %v")),
|
|
)),
|
|
R.ChainFirstIOK(IO.Logf[[]RecordType]("Log Result: %v")),
|
|
)
|
|
|
|
result := data(context.Background())
|
|
|
|
assert.Equal(t, E.Of[error](A.From(RecordType{"file1"}, RecordType{"file2"}, RecordType{"file3"})), result())
|
|
}
|