/usr/share/gocode/src/github.com/cloudfoundry/gosigar/sigar_linux_test.go is in golang-github-cloudfoundry-gosigar-dev 0.0~git20150402.27.3ed7c74-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 | package sigar_test
import (
"io/ioutil"
"time"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
sigar "github.com/cloudfoundry/gosigar"
)
var _ = Describe("sigarLinux", func() {
var procd string
BeforeEach(func() {
var err error
procd, err = ioutil.TempDir("", "sigarTests")
Expect(err).ToNot(HaveOccurred())
sigar.Procd = procd
})
AfterEach(func() {
sigar.Procd = "/proc"
})
Describe("CPU", func() {
var (
statFile string
cpu sigar.Cpu
)
BeforeEach(func() {
statFile = procd + "/stat"
cpu = sigar.Cpu{}
})
Describe("Get", func() {
It("gets CPU usage", func() {
statContents := []byte("cpu 25 1 2 3 4 5 6 7")
err := ioutil.WriteFile(statFile, statContents, 0644)
Expect(err).ToNot(HaveOccurred())
err = cpu.Get()
Expect(err).ToNot(HaveOccurred())
Expect(cpu.User).To(Equal(uint64(25)))
})
It("ignores empty lines", func() {
statContents := []byte("cpu ")
err := ioutil.WriteFile(statFile, statContents, 0644)
Expect(err).ToNot(HaveOccurred())
err = cpu.Get()
Expect(err).ToNot(HaveOccurred())
Expect(cpu.User).To(Equal(uint64(0)))
})
})
Describe("CollectCpuStats", func() {
It("collects CPU usage over time", func() {
statContents := []byte("cpu 25 1 2 3 4 5 6 7")
err := ioutil.WriteFile(statFile, statContents, 0644)
Expect(err).ToNot(HaveOccurred())
concreteSigar := &sigar.ConcreteSigar{}
cpuUsages, stop := concreteSigar.CollectCpuStats(500 * time.Millisecond)
Expect(<-cpuUsages).To(Equal(sigar.Cpu{
User: uint64(25),
Nice: uint64(1),
Sys: uint64(2),
Idle: uint64(3),
Wait: uint64(4),
Irq: uint64(5),
SoftIrq: uint64(6),
Stolen: uint64(7),
}))
statContents = []byte("cpu 30 3 7 10 25 55 36 65")
err = ioutil.WriteFile(statFile, statContents, 0644)
Expect(err).ToNot(HaveOccurred())
Expect(<-cpuUsages).To(Equal(sigar.Cpu{
User: uint64(5),
Nice: uint64(2),
Sys: uint64(5),
Idle: uint64(7),
Wait: uint64(21),
Irq: uint64(50),
SoftIrq: uint64(30),
Stolen: uint64(58),
}))
stop <- struct{}{}
})
})
})
Describe("Mem", func() {
var meminfoFile string
BeforeEach(func() {
meminfoFile = procd + "/meminfo"
meminfoContents := `
MemTotal: 374256 kB
MemFree: 274460 kB
Buffers: 9764 kB
Cached: 38648 kB
SwapCached: 0 kB
Active: 33772 kB
Inactive: 31184 kB
Active(anon): 16572 kB
Inactive(anon): 552 kB
Active(file): 17200 kB
Inactive(file): 30632 kB
Unevictable: 0 kB
Mlocked: 0 kB
SwapTotal: 786428 kB
SwapFree: 786428 kB
Dirty: 0 kB
Writeback: 0 kB
AnonPages: 16564 kB
Mapped: 6612 kB
Shmem: 584 kB
Slab: 19092 kB
SReclaimable: 9128 kB
SUnreclaim: 9964 kB
KernelStack: 672 kB
PageTables: 1864 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 973556 kB
Committed_AS: 55880 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 21428 kB
VmallocChunk: 34359713596 kB
HardwareCorrupted: 0 kB
AnonHugePages: 0 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
DirectMap4k: 59328 kB
DirectMap2M: 333824 kB
`
err := ioutil.WriteFile(meminfoFile, []byte(meminfoContents), 0444)
Expect(err).ToNot(HaveOccurred())
})
It("returns correct memory info", func() {
mem := sigar.Mem{}
err := mem.Get()
Expect(err).ToNot(HaveOccurred())
Expect(mem.Total).To(BeNumerically("==", 374256*1024))
Expect(mem.Free).To(BeNumerically("==", 274460*1024))
})
})
Describe("Swap", func() {
var meminfoFile string
BeforeEach(func() {
meminfoFile = procd + "/meminfo"
meminfoContents := `
MemTotal: 374256 kB
MemFree: 274460 kB
Buffers: 9764 kB
Cached: 38648 kB
SwapCached: 0 kB
Active: 33772 kB
Inactive: 31184 kB
Active(anon): 16572 kB
Inactive(anon): 552 kB
Active(file): 17200 kB
Inactive(file): 30632 kB
Unevictable: 0 kB
Mlocked: 0 kB
SwapTotal: 786428 kB
SwapFree: 786428 kB
Dirty: 0 kB
Writeback: 0 kB
AnonPages: 16564 kB
Mapped: 6612 kB
Shmem: 584 kB
Slab: 19092 kB
SReclaimable: 9128 kB
SUnreclaim: 9964 kB
KernelStack: 672 kB
PageTables: 1864 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 973556 kB
Committed_AS: 55880 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 21428 kB
VmallocChunk: 34359713596 kB
HardwareCorrupted: 0 kB
AnonHugePages: 0 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
DirectMap4k: 59328 kB
DirectMap2M: 333824 kB
`
err := ioutil.WriteFile(meminfoFile, []byte(meminfoContents), 0444)
Expect(err).ToNot(HaveOccurred())
})
It("returns correct memory info", func() {
swap := sigar.Swap{}
err := swap.Get()
Expect(err).ToNot(HaveOccurred())
Expect(swap.Total).To(BeNumerically("==", 786428*1024))
Expect(swap.Free).To(BeNumerically("==", 786428*1024))
})
})
})
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