Adding unitest support

Makefile

@@ -14,6 +14,9 @@ IMAGE_TAG_BASE ?= quay.io/lochoa/ibu-imager
 
 # Image URL to use all building/pushing image targets
 IMG ?= $(IMAGE_TAG_BASE):$(VERSION)
+TEST_FORMAT ?= standard-verbose
+GOTEST_FLAGS = --format=$(TEST_FORMAT)
+GINKGO_FLAGS = -ginkgo.focus="$(FOCUS)" -ginkgo.v -ginkgo.skip="$(SKIP)"
 
 # Unittests variables
 TEST_FORMAT ?= standard-verbose

go.mod

@@ -3,8 +3,9 @@ module ibu-imager
 go 1.20
 
 require (
-	github.com/alessio/shellescape v1.4.2
-	github.com/godbus/dbus v4.1.0+incompatible
+	github.com/golang/mock v1.6.0
+	github.com/onsi/ginkgo v1.16.5
+	github.com/onsi/gomega v1.28.1
 	github.com/otiai10/copy v1.14.0
 	github.com/pkg/errors v0.9.1
 	github.com/sirupsen/logrus v1.9.3
@@ -13,10 +14,15 @@ require (
 )
 
 require (
-	github.com/golang/mock v1.6.0 // indirect
+	github.com/fsnotify/fsnotify v1.4.9 // indirect
+	github.com/google/go-cmp v0.6.0 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/nxadm/tail v1.4.8 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/stretchr/testify v1.8.4 // indirect
+	golang.org/x/net v0.17.0 // indirect
 	golang.org/x/sync v0.3.0 // indirect
-	golang.org/x/sys v0.9.0 // indirect
+	golang.org/x/sys v0.13.0 // indirect
+	golang.org/x/text v0.13.0 // indirect
+	gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 // indirect
 )

go.sum

@@ -1,15 +1,44 @@
-github.com/alessio/shellescape v1.4.2 h1:MHPfaU+ddJ0/bYWpgIeUnQUqKrlJ1S7BfEYPM4uEoM0=
-github.com/alessio/shellescape v1.4.2/go.mod h1:PZAiSCk0LJaZkiCSkPv8qIobYglO3FPpyFjDCtHLS30=
 github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/godbus/dbus v4.1.0+incompatible h1:WqqLRTsQic3apZUK9qC5sGNfXthmPXzUZ7nQPrNITa4=
-github.com/godbus/dbus v4.1.0+incompatible/go.mod h1:/YcGZj5zSblfDWMMoOzV4fas9FZnQYTkDnsGvmh2Grw=
+github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
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+github.com/onsi/gomega v1.28.1 h1:MijcGUbfYuznzK/5R4CPNoUP/9Xvuo20sXfEm6XxoTA=
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@@ -25,39 +54,75 @@ github.com/spf13/cobra v1.7.0/go.mod h1:uLxZILRyS/50WlhOIKD7W6V5bgeIt+4sICxh6uRM
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+gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
+gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

internal/ostree_client/rpm_ostree_client.go

@@ -65,8 +65,8 @@ type Client struct {
 // NewClient creates a new rpm-ostree client.  The client identifier should be a short, unique and ideally machine-readable string.
 // This could be as simple as `examplecorp-management-agent`.
 // If you want to be more verbose, you could use a URL, e.g. `https://gitlab.com/examplecorp/management-agent`.
-func NewClient(id string, ops ops.Ops) Client {
-	return Client{
+func NewClient(id string, ops ops.Ops) *Client {
+	return &Client{
 		clientid: id,
 		ops:      ops,
 	}

internal/seed_creator/seed_creator.go

@@ -14,6 +14,10 @@ import (
 	ostree "ibu-imager/internal/ostree_client"
 )
 
+const (
+	varFolder = "/var"
+)
+
 // containerFileContent is the Dockerfile content for the IBU seed image
 const containerFileContent = `
 FROM scratch
@@ -24,15 +28,15 @@ COPY . /
 type SeedCreator struct {
 	log               *logrus.Logger
 	ops               ops.Ops
-	ostreeClient      ostree.Client
+	ostreeClient      *ostree.Client
 	backupDir         string
 	kubeconfig        string
 	containerRegistry string
 	backupTag         string
 	authFile          string
 }
 
-func NewSeedCreator(log *logrus.Logger, ops ops.Ops, ostreeClient ostree.Client, backupDir,
+func NewSeedCreator(log *logrus.Logger, ops ops.Ops, ostreeClient *ostree.Client, backupDir,
 	kubeconfig, containerRegistry, backupTag, authFile string) *SeedCreator {
 	return &SeedCreator{
 		log:               log,
@@ -181,7 +185,7 @@ func (s *SeedCreator) stopServices() error {
 
 func (s *SeedCreator) backupVar() error {
 	// Check if the backup file for /var doesn't exist
-	varTarFile := s.backupDir + "/var.tgz"
+	varTarFile := path.Join(s.backupDir, "var.tgz")
 	_, err := os.Stat(varTarFile)
 	if err == nil || !os.IsNotExist(err) {
 		return err
@@ -203,15 +207,15 @@ func (s *SeedCreator) backupVar() error {
 		// We're handling the excluded patterns in bash, we need to single quote them to prevent expansion
 		tarArgs = append(tarArgs, "--exclude", fmt.Sprintf("'%s'", pattern))
 	}
-	tarArgs = append(tarArgs, "--selinux", "/var")
+	tarArgs = append(tarArgs, "--selinux", varFolder)
 
 	// Run the tar command
 	_, err = s.ops.RunBashInHostNamespace("tar", tarArgs...)
 	if err != nil {
 		return err
 	}
 
-	log.Println("Backup of /var created successfully.")
+	s.log.Infof("Backup of %s created successfully.", varFolder)
 	return nil
 }
 

internal/seed_creator/seed_creator_test.go

@@ -0,0 +1,65 @@
+package seed_creator
+
+import (
+	"fmt"
+	"os"
+	"path"
+	"path/filepath"
+	"testing"
+
+	"github.com/golang/mock/gomock"
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+
+	"github.com/sirupsen/logrus"
+	"ibu-imager/internal/ops"
+)
+
+func TestIbuImager(t *testing.T) {
+	RegisterFailHandler(Fail)
+	RunSpecs(t, "IbuImager Suite")
+}
+
+var _ = Describe("Backup /var", func() {
+	var (
+		l       = logrus.New()
+		ctrl    *gomock.Controller
+		opsMock *ops.MockOps
+		seed    *SeedCreator
+		tmpDir  string
+	)
+
+	BeforeEach(func() {
+		ctrl = gomock.NewController(GinkgoT())
+		opsMock = ops.NewMockOps(ctrl)
+		tmpDir, _ = os.MkdirTemp("", "test")
+		seed = NewSeedCreator(l, opsMock, nil, tmpDir, "", "", "", "")
+	})
+	AfterEach(func() {
+		Expect(os.RemoveAll(tmpDir)).To(Succeed())
+	})
+
+	It("Full flow", func() {
+		args := []string{"czf", path.Join(tmpDir, "var.tgz"), "--exclude", "'/var/tmp/*'",
+			"--exclude", "'/var/lib/log/*'", "--exclude", "'/var/log/*'", "--exclude", "'/var/lib/containers/*'", "--exclude",
+			"'/var/lib/kubelet/pods/*'", "--exclude", "'/var/lib/cni/bin/*'", "--selinux", "/var"}
+		opsMock.EXPECT().RunBashInHostNamespace("tar", args).Times(1).Return("", nil)
+		err := seed.backupVar()
+		Expect(err).ToNot(HaveOccurred())
+	})
+
+	It("var.tgz was already created, no need to run", func() {
+		newPath := filepath.Join(tmpDir, "var.tgz")
+		f, err := os.Create(newPath)
+		Expect(err).ToNot(HaveOccurred())
+		_ = f.Close()
+		err = seed.backupVar()
+		Expect(err).ToNot(HaveOccurred())
+	})
+
+	It("Fail to run tar command", func() {
+		opsMock.EXPECT().RunBashInHostNamespace("tar", gomock.Any()).Times(1).Return("", fmt.Errorf("Dummy"))
+		err := seed.backupVar()
+		Expect(err).To(HaveOccurred())
+	})
+})