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qemu_arm64_test.go
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qemu_arm64_test.go
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// Copyright (c) 2018 IBM
//
// SPDX-License-Identifier: Apache-2.0
//
package virtcontainers
import (
"fmt"
"io/ioutil"
"os"
"path/filepath"
"runtime"
"testing"
govmmQemu "github.com/intel/govmm/qemu"
"github.com/stretchr/testify/assert"
)
func newTestQemu(machineType string) qemuArch {
config := HypervisorConfig{
HypervisorMachineType: machineType,
}
return newQemuArch(config)
}
func TestQemuArm64CPUModel(t *testing.T) {
assert := assert.New(t)
arm64 := newTestQemu(QemuVirt)
expectedOut := defaultCPUModel
model := arm64.cpuModel()
assert.Equal(expectedOut, model)
}
func TestQemuArm64MemoryTopology(t *testing.T) {
assert := assert.New(t)
arm64 := newTestQemu(QemuVirt)
hostMem := uint64(4096)
mem := uint64(1024)
slots := uint8(3)
expectedMemory := govmmQemu.Memory{
Size: fmt.Sprintf("%dM", mem),
Slots: slots,
MaxMem: fmt.Sprintf("%dM", hostMem),
}
m := arm64.memoryTopology(mem, hostMem, slots)
assert.Equal(expectedMemory, m)
}
func TestMaxQemuVCPUs(t *testing.T) {
assert := assert.New(t)
type testData struct {
contents string
expectedResult uint32
}
data := []testData{
{"", uint32(runtime.NumCPU())},
{" 1: 0 0 GICv2 25 Level vgic \n", uint32(8)},
{" 1: 0 0 GICv3 25 Level vgic \n", uint32(123)},
{" 1: 0 0 GICv4 25 Level vgic \n", uint32(123)},
}
tmpdir, err := ioutil.TempDir("", "")
if err != nil {
panic(err)
}
defer os.RemoveAll(tmpdir)
savedGicProfile := gicProfile
testGicProfile := filepath.Join(tmpdir, "interrupts")
// override
gicProfile = testGicProfile
defer func() {
gicProfile = savedGicProfile
}()
savedHostGICVersion := hostGICVersion
defer func() {
hostGICVersion = savedHostGICVersion
}()
for _, d := range data {
err := ioutil.WriteFile(gicProfile, []byte(d.contents), os.FileMode(0640))
assert.NoError(err)
hostGICVersion = getHostGICVersion()
vCPUs := MaxQemuVCPUs()
assert.Equal(d.expectedResult, vCPUs)
}
}
func TestQemuArm64AppendBridges(t *testing.T) {
var devices []govmmQemu.Device
assert := assert.New(t)
arm64 := newTestQemu(QemuVirt)
bridges := arm64.bridges(1)
assert.Len(bridges, 1)
devices = []govmmQemu.Device{}
devices = arm64.appendBridges(devices, bridges)
assert.Len(devices, 1)
expectedOut := []govmmQemu.Device{
govmmQemu.BridgeDevice{
Type: govmmQemu.PCIEBridge,
Bus: defaultBridgeBus,
ID: bridges[0].ID,
Chassis: 1,
SHPC: true,
Addr: "2",
},
}
assert.Equal(expectedOut, devices)
}
func TestQemuArm64AppendImage(t *testing.T) {
var devices []govmmQemu.Device
assert := assert.New(t)
arm64 := newTestQemu(QemuVirt)
f, err := ioutil.TempFile("", "img")
assert.NoError(err)
defer func() { _ = f.Close() }()
defer func() { _ = os.Remove(f.Name()) }()
imageStat, err := f.Stat()
assert.NoError(err)
expectedOut := []govmmQemu.Device{
govmmQemu.Object{
Driver: govmmQemu.NVDIMM,
Type: govmmQemu.MemoryBackendFile,
DeviceID: "nv0",
ID: "mem0",
MemPath: f.Name(),
Size: (uint64)(imageStat.Size()),
},
}
devices, err = arm64.appendImage(devices, f.Name())
assert.NoError(err)
assert.Equal(expectedOut, devices)
}