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// SPDX-License-Identifier: BSD-3-Clause
package mem
import (
"errors"
"fmt"
"runtime"
"testing"
"github.com/stretchr/testify/assert"
"github.com/shirou/gopsutil/v4/internal/common"
)
func skipIfNotImplementedErr(t *testing.T, err error) {
if errors.Is(err, common.ErrNotImplementedError) {
t.Skip("not implemented")
}
}
func TestVirtualMemory(t *testing.T) {
if runtime.GOOS == "solaris" || runtime.GOOS == "illumos" {
t.Skip("Only .Total .Available are supported on Solaris/illumos")
}
v, err := VirtualMemory()
skipIfNotImplementedErr(t, err)
if err != nil {
t.Errorf("error %v", err)
}
empty := &VirtualMemoryStat{}
if v == empty {
t.Errorf("error %v", v)
}
t.Log(v)
assert.True(t, v.Total > 0)
assert.True(t, v.Available > 0)
assert.True(t, v.Used > 0)
total := v.Used + v.Free + v.Buffers + v.Cached
totalStr := "used + free + buffers + cached"
switch runtime.GOOS {
case "windows":
total = v.Used + v.Available
totalStr = "used + available"
case "darwin", "openbsd":
total = v.Used + v.Free + v.Cached + v.Inactive
totalStr = "used + free + cached + inactive"
case "freebsd":
total = v.Used + v.Free + v.Cached + v.Inactive + v.Laundry
totalStr = "used + free + cached + inactive + laundry"
}
assert.Equal(t, v.Total, total,
"Total should be computable (%v): %v", totalStr, v)
assert.True(t, runtime.GOOS == "windows" || v.Free > 0)
assert.True(t, runtime.GOOS == "windows" || v.Available > v.Free,
"Free should be a subset of Available: %v", v)
inDelta := assert.InDelta
if runtime.GOOS == "windows" {
inDelta = assert.InEpsilon
}
inDelta(t, v.UsedPercent,
100*float64(v.Used)/float64(v.Total), 0.1,
"UsedPercent should be how many percent of Total is Used: %v", v)
}
func TestSwapMemory(t *testing.T) {
v, err := SwapMemory()
skipIfNotImplementedErr(t, err)
if err != nil {
t.Errorf("error %v", err)
}
empty := &SwapMemoryStat{}
if v == empty {
t.Errorf("error %v", v)
}
t.Log(v)
}
func TestVirtualMemoryStat_String(t *testing.T) {
v := VirtualMemoryStat{
Total: 10,
Available: 20,
Used: 30,
UsedPercent: 30.1,
Free: 40,
}
t.Log(v)
e := `{"total":10,"available":20,"used":30,"usedPercent":30.1,"free":40,"active":0,"inactive":0,"wired":0,"laundry":0,"buffers":0,"cached":0,"writeBack":0,"dirty":0,"writeBackTmp":0,"shared":0,"slab":0,"sreclaimable":0,"sunreclaim":0,"pageTables":0,"swapCached":0,"commitLimit":0,"committedAS":0,"highTotal":0,"highFree":0,"lowTotal":0,"lowFree":0,"swapTotal":0,"swapFree":0,"mapped":0,"vmallocTotal":0,"vmallocUsed":0,"vmallocChunk":0,"hugePagesTotal":0,"hugePagesFree":0,"hugePagesRsvd":0,"hugePagesSurp":0,"hugePageSize":0,"anonHugePages":0}`
if e != fmt.Sprintf("%v", v) {
t.Errorf("VirtualMemoryStat string is invalid: %v", v)
}
}
func TestSwapMemoryStat_String(t *testing.T) {
v := SwapMemoryStat{
Total: 10,
Used: 30,
Free: 40,
UsedPercent: 30.1,
Sin: 1,
Sout: 2,
PgIn: 3,
PgOut: 4,
PgFault: 5,
PgMajFault: 6,
}
e := `{"total":10,"used":30,"free":40,"usedPercent":30.1,"sin":1,"sout":2,"pgIn":3,"pgOut":4,"pgFault":5,"pgMajFault":6}`
if e != fmt.Sprintf("%v", v) {
t.Errorf("SwapMemoryStat string is invalid: %v", v)
}
}
func TestSwapDevices(t *testing.T) {
v, err := SwapDevices()
skipIfNotImplementedErr(t, err)
if err != nil {
t.Fatalf("error calling SwapDevices: %v", err)
}
t.Logf("SwapDevices() -> %+v", v)
if len(v) == 0 {
t.Skip("no swap devices found. [this is expected if the host has swap disabled]")
}
for _, device := range v {
if device.Name == "" {
t.Fatalf("deviceName not set in %+v", device)
}
if device.FreeBytes == 0 {
t.Logf("[WARNING] free-bytes is zero in %+v. This might be expected", device)
}
if device.UsedBytes == 0 {
t.Logf("[WARNING] used-bytes is zero in %+v. This might be expected", device)
}
}
}
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