diff --git a/pkg/log/log_test.go b/pkg/log/log_test.go
index dd734ee0f..0e84eee79 100644
--- a/pkg/log/log_test.go
+++ b/pkg/log/log_test.go
@@ -11,16 +11,19 @@ import (
 	"io/ioutil"
 	"net/http"
 	"os"
+	"path"
 	"strings"
 	"testing"
 	"time"
 
 	godigest "github.com/opencontainers/go-digest"
+	"github.com/rs/zerolog"
 	. "github.com/smartystreets/goconvey/convey"
 	"gopkg.in/resty.v1"
 	"zotregistry.io/zot/pkg/api"
 	"zotregistry.io/zot/pkg/api/config"
 	"zotregistry.io/zot/pkg/api/constants"
+	"zotregistry.io/zot/pkg/log"
 	. "zotregistry.io/zot/pkg/test"
 )
 
@@ -305,3 +308,35 @@ func TestAuditLogMessages(t *testing.T) {
 		})
 	})
 }
+
+func TestLogErrors(t *testing.T) {
+	Convey("Get error with unknown log level", t, func() {
+		So(func() { _ = log.NewLogger("invalid", "test.out") }, ShouldPanic)
+	})
+
+	Convey("Get error when opening log file", t, func() {
+		dir := t.TempDir()
+		logPath := path.Join(dir, "logFile")
+		err := ioutil.WriteFile(logPath, []byte{}, 0o000)
+		So(err, ShouldBeNil)
+		So(func() {
+			_ = log.NewLogger(zerolog.DebugLevel.String(), logPath)
+		}, ShouldPanic)
+	})
+}
+
+func TestAuditLogErrors(t *testing.T) {
+	Convey("Get error with unknown log level", t, func() {
+		So(func() { _ = log.NewAuditLogger("invalid", "test.out") }, ShouldPanic)
+	})
+
+	Convey("Get error when opening log file", t, func() {
+		dir := t.TempDir()
+		auditLogPath := path.Join(dir, "auditLogFile")
+		err := ioutil.WriteFile(auditLogPath, []byte{}, 0o000)
+		So(err, ShouldBeNil)
+		So(func() {
+			_ = log.NewAuditLogger(zerolog.DebugLevel.String(), auditLogPath)
+		}, ShouldPanic)
+	})
+}
diff --git a/pkg/storage/storage_fs_test.go b/pkg/storage/storage_fs_test.go
index f34973221..24c786e1d 100644
--- a/pkg/storage/storage_fs_test.go
+++ b/pkg/storage/storage_fs_test.go
@@ -6,6 +6,7 @@ import (
 	_ "crypto/sha256"
 	"encoding/json"
 	"fmt"
+	"io"
 	"io/ioutil"
 	"math/big"
 	"os"
@@ -1166,3 +1167,76 @@ func randSeq(n int) string {
 
 	return string(buf)
 }
+
+func TestInitRepo(t *testing.T) {
+	Convey("Get error when creating BlobUploadDir subdir on initRepo", t, func() {
+		dir := t.TempDir()
+
+		log := log.Logger{Logger: zerolog.New(os.Stdout)}
+		metrics := monitoring.NewMetricsServer(false, log)
+		imgStore := storage.NewImageStore(dir, true, storage.DefaultGCDelay, true, true, log, metrics)
+
+		err := os.Mkdir(path.Join(dir, "test-dir"), 0o000)
+		So(err, ShouldBeNil)
+
+		err = imgStore.InitRepo("test-dir")
+		So(err, ShouldNotBeNil)
+	})
+}
+
+func TestValidateRepo(t *testing.T) {
+	Convey("Get error when unable to read directory", t, func() {
+		dir := t.TempDir()
+
+		log := log.Logger{Logger: zerolog.New(os.Stdout)}
+		metrics := monitoring.NewMetricsServer(false, log)
+		imgStore := storage.NewImageStore(dir, true, storage.DefaultGCDelay, true, true, log, metrics)
+
+		err := os.Mkdir(path.Join(dir, "test-dir"), 0o000)
+		So(err, ShouldBeNil)
+
+		_, err = imgStore.ValidateRepo("test-dir")
+		So(err, ShouldNotBeNil)
+	})
+}
+
+func TestGetRepositoriesError(t *testing.T) {
+	Convey("Get error when returning relative path", t, func() {
+		dir := t.TempDir()
+
+		log := log.Logger{Logger: zerolog.New(os.Stdout)}
+		metrics := monitoring.NewMetricsServer(false, log)
+		imgStore := storage.NewImageStore(dir, true, storage.DefaultGCDelay, true, true, log, metrics)
+
+		// create valid directory with permissions
+		err := os.Mkdir(path.Join(dir, "test-dir"), 0o755)
+		So(err, ShouldBeNil)
+
+		err = ioutil.WriteFile(path.Join(dir, "test-dir/test-file"), []byte("this is test file"), 0o000)
+		So(err, ShouldBeNil)
+
+		_, err = imgStore.GetRepositories()
+		So(err, ShouldBeNil)
+	})
+}
+
+func TestPutBlobChunkStreamed(t *testing.T) {
+	Convey("Get error on opening file", t, func() {
+		dir := t.TempDir()
+
+		log := log.Logger{Logger: zerolog.New(os.Stdout)}
+		metrics := monitoring.NewMetricsServer(false, log)
+		imgStore := storage.NewImageStore(dir, true, storage.DefaultGCDelay, true, true, log, metrics)
+
+		uuid, err := imgStore.NewBlobUpload("test")
+		So(err, ShouldBeNil)
+
+		var reader io.Reader
+		blobPath := imgStore.BlobUploadPath("test", uuid)
+		err = os.Chmod(blobPath, 0o000)
+		So(err, ShouldBeNil)
+
+		_, err = imgStore.PutBlobChunkStreamed("test", uuid, reader)
+		So(err, ShouldNotBeNil)
+	})
+}