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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
//go:build linux || dragonfly || freebsd || netbsd || openbsd || solaris
package resource
import (
"os"
"testing"
"github.com/stretchr/testify/require"
)
func TestReadFileExistent(t *testing.T) {
fileContents := "foo"
f, err := os.CreateTemp("", "readfile_")
require.NoError(t, err)
defer os.Remove(f.Name())
_, err = f.WriteString(fileContents)
require.NoError(t, err)
require.NoError(t, f.Close())
result, err := readFile(f.Name())
require.NoError(t, err)
require.Equal(t, result, fileContents)
}
func TestReadFileNonExistent(t *testing.T) {
// create unique filename
f, err := os.CreateTemp("", "readfile_")
require.NoError(t, err)
// make file non-existent
require.NoError(t, os.Remove(f.Name()))
_, err = readFile(f.Name())
require.ErrorIs(t, err, os.ErrNotExist)
}
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