mirror of
https://github.com/open-telemetry/opentelemetry-go.git
synced 2024-12-10 09:50:58 +02:00
111 lines
3.2 KiB
Go
111 lines
3.2 KiB
Go
// Copyright The OpenTelemetry Authors
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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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//go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris || zos
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// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris zos
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package resource_test
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import (
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"fmt"
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"os"
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"testing"
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"github.com/stretchr/testify/require"
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"golang.org/x/sys/unix"
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"go.opentelemetry.io/otel/sdk/resource"
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)
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func fakeUnameProvider(buf *unix.Utsname) error {
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copy(buf.Sysname[:], "Mock OS")
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copy(buf.Nodename[:], "DESKTOP-PC")
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copy(buf.Release[:], "5.0.0")
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copy(buf.Version[:], "#1 SMP Thu May 6 12:34:56 UTC 2021")
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copy(buf.Machine[:], "x86_64")
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return nil
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}
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func fakeUnameProviderWithError(buf *unix.Utsname) error {
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return fmt.Errorf("error invoking uname(2)")
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}
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func TestUname(t *testing.T) {
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resource.SetUnameProvider(fakeUnameProvider)
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uname, err := resource.Uname()
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require.Equal(t, uname, "Mock OS DESKTOP-PC 5.0.0 #1 SMP Thu May 6 12:34:56 UTC 2021 x86_64")
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require.NoError(t, err)
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resource.SetDefaultUnameProvider()
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}
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func TestUnameError(t *testing.T) {
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resource.SetUnameProvider(fakeUnameProviderWithError)
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uname, err := resource.Uname()
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require.Empty(t, uname)
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require.Error(t, err)
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resource.SetDefaultUnameProvider()
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}
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func TestGetFirstAvailableFile(t *testing.T) {
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tempDir := t.TempDir()
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file1, _ := os.CreateTemp(tempDir, "candidate_")
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file2, _ := os.CreateTemp(tempDir, "candidate_")
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filename1, filename2 := file1.Name(), file2.Name()
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tt := []struct {
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Name string
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Candidates []string
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ExpectedFileName string
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ExpectedErr string
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}{
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{"Gets first, skip second candidate", []string{filename1, filename2}, filename1, ""},
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{"Skips first, gets second candidate", []string{"does_not_exists", filename2}, filename2, ""},
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{"Skips first, gets second, ignores third candidate", []string{"does_not_exists", filename2, filename1}, filename2, ""},
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{"No candidates (empty slice)", []string{}, "", "no candidate file available: []"},
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{"No candidates (nil slice)", nil, "", "no candidate file available: []"},
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{"Single nonexisting candidate", []string{"does_not_exists"}, "", "no candidate file available: [does_not_exists]"},
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{"Multiple nonexisting candidates", []string{"does_not_exists", "this_either"}, "", "no candidate file available: [does_not_exists this_either]"},
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}
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for _, tc := range tt {
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tc := tc
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t.Run(tc.Name, func(t *testing.T) {
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file, err := resource.GetFirstAvailableFile(tc.Candidates)
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filename := ""
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if file != nil {
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filename = file.Name()
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}
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errString := ""
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if err != nil {
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errString = err.Error()
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}
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require.Equal(t, tc.ExpectedFileName, filename)
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require.Equal(t, tc.ExpectedErr, errString)
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})
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}
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}
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