Add test for sriov.DiscoverSriovDevices function

Signed-off-by: Yury Kulazhenkov <ykulazhenkov@nvidia.com>

go.mod

@@ -13,6 +13,7 @@ require (
 	github.com/google/go-cmp v0.6.0
 	github.com/hashicorp/go-retryablehttp v0.7.0
 	github.com/jaypipes/ghw v0.9.0
+	github.com/jaypipes/pcidb v1.0.0
 	github.com/k8snetworkplumbingwg/network-attachment-definition-client v1.4.0
 	github.com/k8snetworkplumbingwg/sriov-network-device-plugin v0.0.0-20221127172732-a5a7395122e3
 	github.com/k8snetworkplumbingwg/sriovnet v1.2.0
@@ -90,7 +91,6 @@ require (
 	github.com/huandu/xstrings v1.3.2 // indirect
 	github.com/imdario/mergo v0.3.16 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
-	github.com/jaypipes/pcidb v1.0.0 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/k8snetworkplumbingwg/govdpa v0.1.4 // indirect

pkg/host/internal/lib/ghw/ghw.go

@@ -0,0 +1,29 @@
+package ghw
+
+import (
+	"github.com/jaypipes/ghw"
+)
+
+func New() GHWLib {
+	return &libWrapper{}
+}
+
+//go:generate ../../../../../bin/mockgen -destination mock/mock_ghw.go -source ghw.go
+type GHWLib interface {
+	// PCI returns a pointer to an Info that provide methods to access info about devices
+	PCI() (Info, error)
+}
+
+// Info interface provide methods to access info about devices
+type Info interface {
+	// ListDevices returns a list of pointers to Device structs present on the
+	// host system
+	ListDevices() []*ghw.PCIDevice
+}
+
+type libWrapper struct{}
+
+// PCI returns a pointer to an Info that provide methods to access info about devices
+func (w *libWrapper) PCI() (Info, error) {
+	return ghw.PCI()
+}

pkg/host/internal/sriov/sriov.go

@@ -18,6 +18,7 @@ import (
 	sriovnetworkv1 "github.com/k8snetworkplumbingwg/sriov-network-operator/api/v1"
 	"github.com/k8snetworkplumbingwg/sriov-network-operator/pkg/consts"
 	dputilsPkg "github.com/k8snetworkplumbingwg/sriov-network-operator/pkg/host/internal/lib/dputils"
+	ghwPkg "github.com/k8snetworkplumbingwg/sriov-network-operator/pkg/host/internal/lib/ghw"
 	netlinkPkg "github.com/k8snetworkplumbingwg/sriov-network-operator/pkg/host/internal/lib/netlink"
 	sriovnetPkg "github.com/k8snetworkplumbingwg/sriov-network-operator/pkg/host/internal/lib/sriovnet"
 	"github.com/k8snetworkplumbingwg/sriov-network-operator/pkg/host/store"
@@ -40,6 +41,7 @@ type sriov struct {
 	netlinkLib    netlinkPkg.NetlinkLib
 	dputilsLib    dputilsPkg.DPUtilsLib
 	sriovnetLib   sriovnetPkg.SriovnetLib
+	ghwLib        ghwPkg.GHWLib
 }
 
 func New(utilsHelper utils.CmdInterface,
@@ -49,7 +51,8 @@ func New(utilsHelper utils.CmdInterface,
 	vdpaHelper types.VdpaInterface,
 	netlinkLib netlinkPkg.NetlinkLib,
 	dputilsLib dputilsPkg.DPUtilsLib,
-	sriovnetLib sriovnetPkg.SriovnetLib) types.SriovInterface {
+	sriovnetLib sriovnetPkg.SriovnetLib,
+	ghwLib ghwPkg.GHWLib) types.SriovInterface {
 	return &sriov{utilsHelper: utilsHelper,
 		kernelHelper:  kernelHelper,
 		networkHelper: networkHelper,
@@ -58,6 +61,7 @@ func New(utilsHelper utils.CmdInterface,
 		netlinkLib:    netlinkLib,
 		dputilsLib:    dputilsLib,
 		sriovnetLib:   sriovnetLib,
+		ghwLib:        ghwLib,
 	}
 }
 
@@ -217,7 +221,7 @@ func (s *sriov) DiscoverSriovDevices(storeManager store.ManagerInterface) ([]sri
 	log.Log.V(2).Info("DiscoverSriovDevices")
 	pfList := []sriovnetworkv1.InterfaceExt{}
 
-	pci, err := ghw.PCI()
+	pci, err := s.ghwLib.PCI()
 	if err != nil {
 		return nil, fmt.Errorf("DiscoverSriovDevices(): error getting PCI info: %v", err)
 	}