139 lines
4.3 KiB
Go
139 lines
4.3 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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// 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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// +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 TestNewCGroups(t *testing.T) {
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cgroupsProcCGroupPath := filepath.Join(testDataProcPath, "cgroups", "cgroup")
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cgroupsProcMountInfoPath := filepath.Join(testDataProcPath, "cgroups", "mountinfo")
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testTable := []struct {
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subsys string
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path string
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}{
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{_cgroupSubsysCPU, "/sys/fs/cgroup/cpu,cpuacct"},
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{_cgroupSubsysCPUAcct, "/sys/fs/cgroup/cpu,cpuacct"},
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{_cgroupSubsysCPUSet, "/sys/fs/cgroup/cpuset"},
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{_cgroupSubsysMemory, "/sys/fs/cgroup/memory/large"},
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}
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cgroups, err := NewCGroups(cgroupsProcMountInfoPath, cgroupsProcCGroupPath)
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assert.Equal(t, len(testTable), len(cgroups))
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assert.NoError(t, err)
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for _, tt := range testTable {
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cgroup, exists := cgroups[tt.subsys]
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assert.True(t, exists, "%q expected to present in `cgroups`", tt.subsys)
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assert.Equal(t, tt.path, cgroup.path, "%q expected for `cgroups[%q].path`, got %q", tt.path, tt.subsys, cgroup.path)
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}
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}
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func TestNewCGroupsWithErrors(t *testing.T) {
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testTable := []struct {
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mountInfoPath string
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cgroupPath string
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}{
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{"non-existing-file", "/dev/null"},
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{"/dev/null", "non-existing-file"},
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{
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"/dev/null",
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filepath.Join(testDataProcPath, "invalid-cgroup", "cgroup"),
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},
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{
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filepath.Join(testDataProcPath, "invalid-mountinfo", "mountinfo"),
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"/dev/null",
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},
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{
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filepath.Join(testDataProcPath, "untranslatable", "mountinfo"),
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filepath.Join(testDataProcPath, "untranslatable", "cgroup"),
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},
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}
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for _, tt := range testTable {
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cgroups, err := NewCGroups(tt.mountInfoPath, tt.cgroupPath)
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assert.Nil(t, cgroups)
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assert.Error(t, err)
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}
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}
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func TestCGroupsCPUQuota(t *testing.T) {
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testTable := []struct {
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name string
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expectedQuota int64
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expectedDefined bool
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shouldHaveError bool
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}{
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{
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name: "undefined",
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expectedQuota: int64(-1.0),
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expectedDefined: false,
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shouldHaveError: false,
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},
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}
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cgroups := make(CGroups)
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quota, defined, err := cgroups.MemoryQuota()
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assert.Equal(t, int64(-1), quota, "nonexistent")
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assert.False(t, defined, "nonexistent")
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assert.NoError(t, err, "nonexistent")
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for _, tt := range testTable {
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cgroupPath := filepath.Join(testDataCGroupsPath, tt.name)
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cgroups[_cgroupSubsysCPU] = NewCGroup(cgroupPath)
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quota, defined, err := cgroups.MemoryQuota()
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assert.Equal(t, tt.expectedQuota, quota, tt.name)
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assert.Equal(t, tt.expectedDefined, defined, 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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