mirror of
https://github.com/prometheus-community/windows_exporter.git
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Jan-Otto KröpkeandClaude Opus 5.5
5c148173e7
Signed-off-by: Jan-Otto Kröpke <mail@jkroepke.de> Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
104 lines
2.8 KiB
Go
104 lines
2.8 KiB
Go
// SPDX-License-Identifier: Apache-2.0
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//
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// Copyright The Prometheus Authors
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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 windows
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package kernel32_test
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import (
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"os/exec"
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"testing"
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"github.com/prometheus-community/windows_exporter/internal/headers/kernel32"
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"github.com/stretchr/testify/require"
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"golang.org/x/sys/windows"
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)
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// startJobProcesses starts count idle processes and assigns them to a new job object.
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func startJobProcesses(t *testing.T, count int) (windows.Handle, []uint32) {
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t.Helper()
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job, err := windows.CreateJobObject(nil, nil)
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require.NoError(t, err)
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t.Cleanup(func() {
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_ = windows.TerminateJobObject(job, 0)
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_ = windows.CloseHandle(job)
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})
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pids := make([]uint32, 0, count)
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for range count {
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// cmd.exe blocks on the open stdin pipe until the job is terminated.
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cmd := exec.CommandContext(t.Context(), "cmd.exe", "/c", "pause")
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stdin, err := cmd.StdinPipe()
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require.NoError(t, err)
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require.NoError(t, cmd.Start())
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t.Cleanup(func() {
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_ = stdin.Close()
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_ = cmd.Process.Kill()
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_ = cmd.Wait()
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})
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process, err := windows.OpenProcess(windows.PROCESS_SET_QUOTA|windows.PROCESS_TERMINATE, false, uint32(cmd.Process.Pid))
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require.NoError(t, err)
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err = windows.AssignProcessToJobObject(job, process)
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_ = windows.CloseHandle(process)
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require.NoError(t, err)
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pids = append(pids, uint32(cmd.Process.Pid))
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}
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return job, pids
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}
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// More processes than the initial buffer holds must trigger ERROR_MORE_DATA and a retry.
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func TestQueryJobObjectProcessIDs(t *testing.T) {
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t.Parallel()
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job, pids := startJobProcesses(t, 20)
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got, err := kernel32.QueryJobObjectProcessIDs(job)
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require.NoError(t, err)
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require.ElementsMatch(t, pids, got)
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}
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// IsProcessInJob wrote the BOOL into the pointer variable instead of the result,
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// so it always reported false.
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func TestIsProcessInJob(t *testing.T) {
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t.Parallel()
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job, pids := startJobProcesses(t, 1)
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process, err := windows.OpenProcess(windows.PROCESS_QUERY_LIMITED_INFORMATION, false, pids[0])
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require.NoError(t, err)
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t.Cleanup(func() {
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_ = windows.CloseHandle(process)
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})
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isInJob, err := kernel32.IsProcessInJob(process, job)
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require.NoError(t, err)
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require.True(t, isInJob)
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isInJob, err = kernel32.IsProcessInJob(windows.CurrentProcess(), job)
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require.NoError(t, err)
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require.False(t, isInJob)
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}
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