132 lines
3.5 KiB
Go
132 lines
3.5 KiB
Go
// Copyright The OpenTelemetry Authors
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// SPDX-License-Identifier: Apache-2.0
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// Keep the original Uber license.
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// Copyright (c) 2017 Uber Technologies, Inc.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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//go:build linux
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package cgroups
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import (
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"path/filepath"
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"testing"
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"github.com/stretchr/testify/assert"
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)
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func TestCGroupParamPath(t *testing.T) {
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cgroup := NewCGroup("/sys/fs/cgroup/cpu")
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assert.Equal(t, "/sys/fs/cgroup/cpu", cgroup.Path())
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assert.Equal(t, "/sys/fs/cgroup/cpu/cpu.cfs_quota_us", cgroup.ParamPath("cpu.cfs_quota_us"))
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}
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func TestCGroupReadFirstLine(t *testing.T) {
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testTable := []struct {
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name string
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paramName string
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expectedContent string
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shouldHaveError bool
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}{
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{
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name: "cpu",
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paramName: "cpu.cfs_period_us",
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expectedContent: "100000",
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shouldHaveError: false,
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},
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{
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name: "absent",
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paramName: "cpu.stat",
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expectedContent: "",
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shouldHaveError: true,
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},
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{
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name: "empty",
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paramName: "cpu.cfs_quota_us",
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expectedContent: "",
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shouldHaveError: true,
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},
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}
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for _, tt := range testTable {
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cgroupPath := filepath.Join(testDataCGroupsPath, tt.name)
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cgroup := NewCGroup(cgroupPath)
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content, err := cgroup.readFirstLine(tt.paramName)
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assert.Equal(t, tt.expectedContent, content, tt.name)
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if tt.shouldHaveError {
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assert.Error(t, err, tt.name)
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} else {
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assert.NoError(t, err, tt.name)
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}
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}
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}
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func TestCGroupReadInt(t *testing.T) {
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testTable := []struct {
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name string
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paramName string
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expectedValue int64
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shouldHaveError bool
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}{
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{
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name: "cpu",
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paramName: "cpu.cfs_period_us",
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expectedValue: 100000,
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shouldHaveError: false,
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},
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{
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name: "empty",
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paramName: "cpu.cfs_quota_us",
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expectedValue: 0,
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shouldHaveError: true,
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},
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{
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name: "invalid",
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paramName: "cpu.cfs_quota_us",
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expectedValue: 0,
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shouldHaveError: true,
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},
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{
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name: "absent",
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paramName: "cpu.cfs_quota_us",
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expectedValue: 0,
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shouldHaveError: true,
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},
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}
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for _, tt := range testTable {
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cgroupPath := filepath.Join(testDataCGroupsPath, tt.name)
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cgroup := NewCGroup(cgroupPath)
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value, err := cgroup.readInt(tt.paramName)
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assert.Equal(t, tt.expectedValue, value, "%s/%s", tt.name, tt.paramName)
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if tt.shouldHaveError {
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assert.Error(t, err, tt.name)
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} else {
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assert.NoError(t, err, tt.name)
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}
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}
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}
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