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fp-go/v2/idiomatic/ioresult/file/tempfile_test.go
Dr. Carsten Leue 1c42b2ac1d fix: implement idiomatic/ioresult
Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com>
2025-11-19 15:39:02 +01:00

54 lines
1.3 KiB
Go

// Copyright (c) 2023 - 2025 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 file
import (
"os"
"testing"
F "github.com/IBM/fp-go/v2/function"
"github.com/IBM/fp-go/v2/idiomatic/ioresult"
"github.com/stretchr/testify/assert"
)
func TestWithTempFile(t *testing.T) {
res := F.Pipe2(
[]byte("Carsten"),
onWriteAll[*os.File],
WithTempFile,
)
result, err := res()
assert.NoError(t, err)
assert.Equal(t, []byte("Carsten"), result)
}
func TestWithTempFileOnClosedFile(t *testing.T) {
res := WithTempFile(func(f *os.File) IOResult[[]byte] {
return F.Pipe2(
f,
onWriteAll[*os.File]([]byte("Carsten")),
ioresult.ChainFirst(F.Constant1[[]byte](Close(f))),
)
})
result, err := res()
assert.NoError(t, err)
assert.Equal(t, []byte("Carsten"), result)
}