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// Copyright © 2019 The Things Network Foundation, The Things Industries B.V.
//
// 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 fetch_test
import (
"io/ioutil"
"os"
"path/filepath"
"testing"
"github.com/smartystreets/assertions"
"go.thethings.network/lorawan-stack/v3/pkg/fetch"
"go.thethings.network/lorawan-stack/v3/pkg/util/test/assertions/should"
)
type frequencyPlansFileSystem string
func createMockFileSystem() (frequencyPlansFileSystem, error) {
dir, err := ioutil.TempDir("", "")
if err != nil {
return "", err
}
return frequencyPlansFileSystem(dir), nil
}
func (fs frequencyPlansFileSystem) Destroy() error {
return os.RemoveAll(string(fs))
}
func (fs frequencyPlansFileSystem) Dir() string {
return string(fs)
}
func TestFilesystem(t *testing.T) {
a := assertions.New(t)
filename := "file"
content := []byte("Hello world")
fs, err := createMockFileSystem()
a.So(err, should.BeNil)
defer fs.Destroy()
// Creating working file
{
f, err := os.Create(filepath.Join(fs.Dir(), filename))
a.So(err, should.BeNil)
_, err = f.Write(content)
a.So(err, should.BeNil)
err = f.Close()
a.So(err, should.BeNil)
}
fetcher := fetch.FromFilesystem(fs.Dir())
// Reading working file
{
fileContent, err := fetcher.File(filename)
a.So(err, should.BeNil)
a.So(string(fileContent), should.Equal, string(content))
}
// Reading non-working file
{
_, err = fetcher.File("non-existing file")
a.So(err, should.NotBeNil)
}
}