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source/pci: add unit test for the pci source #1589

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Feb 16, 2024
Merged

source/pci: add unit test for the pci source #1589

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24a69b0
source/pci: add unit test for the pci source
marquiz Feb 15, 2024
3941448
source/pci: add testdata for the unit tests
marquiz Feb 15, 2024
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228 changes: 227 additions & 1 deletion source/pci/pci_test.go
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Expand Up @@ -17,12 +17,24 @@ limitations under the License.
package pci

import (
"path/filepath"
"runtime"
"testing"

"github.com/stretchr/testify/assert"
nfdv1alpha1 "sigs.k8s.io/node-feature-discovery/pkg/apis/nfd/v1alpha1"
"sigs.k8s.io/node-feature-discovery/pkg/utils/hostpath"
"sigs.k8s.io/node-feature-discovery/source"
)

func TestPciSource(t *testing.T) {
var packagePath string

func init() {
_, thisFile, _, _ := runtime.Caller(0)
packagePath = filepath.Dir(thisFile)
}

func TestSingletonPciSource(t *testing.T) {
assert.Equal(t, src.Name(), Name)

// Check that GetLabels works with empty features
Expand All @@ -31,5 +43,219 @@ func TestPciSource(t *testing.T) {

assert.Nil(t, err, err)
assert.Empty(t, l)
}

func TestPciSource(t *testing.T) {
// Specify expected "raw" features. These are always the same for the same
// mocked sysfs.
expectedFeatures := map[string]*nfdv1alpha1.Features{
"rootfs-empty": &nfdv1alpha1.Features{
Flags: map[string]nfdv1alpha1.FlagFeatureSet{},
Attributes: map[string]nfdv1alpha1.AttributeFeatureSet{},
Instances: map[string]nfdv1alpha1.InstanceFeatureSet{},
},
"rootfs-1": &nfdv1alpha1.Features{
Flags: map[string]nfdv1alpha1.FlagFeatureSet{},
Attributes: map[string]nfdv1alpha1.AttributeFeatureSet{},
Instances: map[string]nfdv1alpha1.InstanceFeatureSet{
"device": nfdv1alpha1.InstanceFeatureSet{
Elements: []nfdv1alpha1.InstanceFeature{
{
Attributes: map[string]string{
"class": "0880",
"device": "2021",
"subsystem_device": "35cf",
"subsystem_vendor": "8086",
"vendor": "8086",
},
},
{
Attributes: map[string]string{
"class": "ff00",
"device": "a1ed",
"subsystem_device": "35cf",
"subsystem_vendor": "8086",
"vendor": "8086",
},
},
{
Attributes: map[string]string{
"class": "0106",
"device": "a1d2",
"subsystem_device": "35cf",
"subsystem_vendor": "8086",
"vendor": "8086",
},
},
{
Attributes: map[string]string{
"class": "1180",
"device": "a1b1",
"subsystem_device": "35cf",
"subsystem_vendor": "8086",
"vendor": "8086",
},
},
{
Attributes: map[string]string{
"class": "0780",
"device": "a1ba",
"subsystem_device": "35cf",
"subsystem_vendor": "8086",
"vendor": "8086",
},
},
{
Attributes: map[string]string{
"class": "0604",
"device": "a193",
"subsystem_device": "35cf",
"subsystem_vendor": "8086",
"vendor": "8086",
},
},
{
Attributes: map[string]string{
"class": "0c80",
"device": "a1a4",
"subsystem_device": "35cf",
"subsystem_vendor": "8086",
"vendor": "8086",
},
},
{
Attributes: map[string]string{
"class": "0300",
"device": "2000",
"subsystem_device": "2000",
"subsystem_vendor": "1a03",
"vendor": "1a03",
},
},
{
Attributes: map[string]string{
"class": "0b40",
"device": "37c8",
"iommu/intel-iommu/version": "1:0",
"iommu_group/type": "identity",
"sriov_totalvfs": "16",
"subsystem_device": "35cf",
"subsystem_vendor": "8086",
"vendor": "8086",
},
},
{
Attributes: map[string]string{
"class": "0200",
"device": "37d2",
"sriov_totalvfs": "32",
"subsystem_device": "35cf",
"subsystem_vendor": "8086",
"vendor": "8086",
},
},
},
},
},
},
}

// Specify test cases
tests := []struct {
name string
config *Config
rootfs string
expectErr bool
expectedLabels source.FeatureLabels
}{
{
name: "detect with default config",
rootfs: "rootfs-1",
expectedLabels: source.FeatureLabels{
"0300_1a03.present": true,
"0b40_8086.present": true,
"0b40_8086.sriov.capable": true,
},
},
{
name: "test config with empty DeviceLabelFields",
rootfs: "rootfs-1",
config: &Config{
DeviceClassWhitelist: []string{"0c"},
DeviceLabelFields: []string{},
},
expectedLabels: source.FeatureLabels{
"0c80_8086.present": true,
},
},
{
name: "test config with empty DeviceLabelFields",
rootfs: "rootfs-1",
config: &Config{
DeviceClassWhitelist: []string{"0c"},
DeviceLabelFields: []string{},
},
expectedLabels: source.FeatureLabels{
"0c80_8086.present": true,
},
},
{
name: "test config with only invalid DeviceLabelFields",
rootfs: "rootfs-1",
config: &Config{
DeviceClassWhitelist: []string{"0c"},
DeviceLabelFields: []string{"foo", "bar"},
},
expectedLabels: source.FeatureLabels{
"0c80_8086.present": true,
},
},
{
name: "test config with some invalid DeviceLabelFields",
rootfs: "rootfs-1",
config: &Config{
DeviceClassWhitelist: []string{"0c"},
DeviceLabelFields: []string{"foo", "class"},
},
expectedLabels: source.FeatureLabels{
"0c80.present": true,
},
},
{
name: "test empty sysfs",
rootfs: "rootfs-empty",
expectErr: true,
expectedLabels: source.FeatureLabels{},
},
}

// Run test cases
for _, tc := range tests {
t.Run(tc.name, func(t *testing.T) {
hostpath.SysfsDir = hostpath.HostDir(filepath.Join(packagePath, "testdata", tc.rootfs, "sys"))

config := tc.config
if config == nil {
config = newDefaultConfig()
}
testSrc := pciSource{config: config}

// Discover mock PCI devices
err := testSrc.Discover()
if tc.expectErr {
assert.NotNil(t, err, err)
} else {
assert.Nil(t, err, err)
}

// Check features
f := testSrc.GetFeatures()
assert.Equal(t, expectedFeatures[tc.rootfs], f)

// Check labels
l, err := testSrc.GetLabels()
assert.Nil(t, err, err)
assert.Equal(t, tc.expectedLabels, l)
})
}
}
1 change: 1 addition & 0 deletions source/pci/testdata/rootfs-1/sys/bus/pci/devices/0000:00:04.0/ari_enabled
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pci:v00008086d00002021sv00008086sd000035CFbc08sc80i00
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1 change: 1 addition & 0 deletions source/pci/testdata/rootfs-1/sys/bus/pci/devices/0000:00:14.2/broken_parity_status
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1 change: 1 addition & 0 deletions source/pci/testdata/rootfs-1/sys/bus/pci/devices/0000:00:14.2/class
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1 change: 1 addition & 0 deletions source/pci/testdata/rootfs-1/sys/bus/pci/devices/0000:00:14.2/consistent_dma_mask_bits
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1 change: 1 addition & 0 deletions source/pci/testdata/rootfs-1/sys/bus/pci/devices/0000:00:14.2/d3cold_allowed
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1 change: 1 addition & 0 deletions source/pci/testdata/rootfs-1/sys/bus/pci/devices/0000:00:14.2/dma_mask_bits
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