diff --git a/go.mod b/go.mod
index a3e3af5..0325efa 100644
--- a/go.mod
+++ b/go.mod
@@ -2,4 +2,7 @@ module r00t2.io/gosecret
 
 go 1.17
 
-require github.com/godbus/dbus/v5 v5.0.6
+require (
+	github.com/godbus/dbus/v5 v5.0.6
+	github.com/google/uuid v1.3.0
+)
diff --git a/go.sum b/go.sum
index aeec758..4c667d8 100644
--- a/go.sum
+++ b/go.sum
@@ -1,2 +1,4 @@
 github.com/godbus/dbus/v5 v5.0.6 h1:mkgN1ofwASrYnJ5W6U/BxG15eXXXjirgZc7CLqkcaro=
 github.com/godbus/dbus/v5 v5.0.6/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
+github.com/google/uuid v1.3.0 h1:t6JiXgmwXMjEs8VusXIJk2BXHsn+wx8BZdTaoZ5fu7I=
+github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
diff --git a/service_funcs.go b/service_funcs.go
index fe009df..ece7742 100644
--- a/service_funcs.go
+++ b/service_funcs.go
@@ -1,10 +1,10 @@
 package gosecret
 
 import (
-	`errors`
-	`fmt`
-	`path/filepath`
-	`strings`
+	"errors"
+	"fmt"
+	"path/filepath"
+	"strings"
 
 	"github.com/godbus/dbus/v5"
 )
@@ -259,7 +259,7 @@ func (s *Service) OpenSession(algo, input string) (session *Session, output dbus
 		return
 	}
 
-	session = NewSession(s, path)
+	session, err = NewSession(s, path)
 
 	return
 }
@@ -395,7 +395,7 @@ func (s *Service) SetAlias(alias string, objectPath dbus.ObjectPath) (err error)
 		DbusServiceSetAlias, 0, alias, objectPath,
 	)
 
-	_ = c
+	err = c.Err
 
 	return
 }
diff --git a/service_funcs_test.go b/service_funcs_test.go
index ace5a9c..d5e98c0 100644
--- a/service_funcs_test.go
+++ b/service_funcs_test.go
@@ -1,15 +1,190 @@
 package gosecret
 
 import (
-	`testing`
+	"testing"
+
+	"github.com/google/uuid"
 )
 
+var (
+	collectionName  uuid.UUID = uuid.New()
+	collectionAlias uuid.UUID = uuid.New()
+)
+
+const (
+	defaultCollection string = "Login"
+	testAlias         string = "GOSECRET_TESTING_ALIAS"
+)
+
+/*
+	TestNewService tests the following internal functions/methods via nested calls:
+
+		NewService
+			Service.GetSession
+				Service.OpenSession
+					NewSession
+						validConnPath
+							connIsValid
+							pathIsValid
+		Service.Close
+			Session.Close
+
+*/
 func TestNewService(t *testing.T) {
 
 	var err error
+	var svc *Service
 
-	if _, err = NewService(); err != nil {
+	if svc, err = NewService(); err != nil {
 		t.Fatalf("could not get new Service via NewService: %v", err.Error())
 	}
 
+	if err = svc.Close(); err != nil {
+		t.Errorf("could not close Service.Session: %v", err.Error())
+	}
+
 }
+
+/*
+	TestService_Collections tests the following internal functions/methods via nested calls:
+
+		(all calls in TestNewService)
+		Service.Collections
+			NewCollection
+				Collection.Modified
+			NewErrors
+*/
+func TestService_Collections(t *testing.T) {
+
+	var err error
+	var svc *Service
+	var colls []*Collection
+
+	if svc, err = NewService(); err != nil {
+		t.Fatalf("could not get new Service via NewService: %v", err.Error())
+	}
+
+	if _, err = svc.Collections(); err != nil {
+		t.Errorf("could not get Service.Collections: %v", err.Error())
+	} else {
+		t.Logf("found %v collections via Service.Collections", len(colls))
+	}
+
+	if err = svc.Close(); err != nil {
+		t.Errorf("could not close Service.Session: %v", err.Error())
+	}
+
+}
+
+/*
+	TestService_CreateAliasedCollection tests the following internal functions/methods via nested calls:
+
+		(all calls in TestNewService)
+		Service.CreateAliasedCollection
+			NewCollection
+				Collection.Modified
+		Collection.Delete
+		Service.SetAlias
+
+	(By extension, Service.CreateCollection is also tested as it's a very thin wrapper
+	around Service.CreateAliasedCollection).
+*/
+func TestService_CreateAliasedCollection(t *testing.T) {
+
+	var err error
+	var svc *Service
+	var collection *Collection
+
+	if svc, err = NewService(); err != nil {
+		t.Fatalf("could not get new Service via NewService: %v", err.Error())
+	}
+
+	if collection, err = svc.CreateAliasedCollection(collectionName.String(), collectionAlias.String()); err != nil {
+		t.Errorf(
+			"error when creating aliased collection '%v' with alias '%v': %v",
+			collectionName.String(), collectionAlias.String(), err.Error(),
+		)
+	} else {
+		if err = collection.Delete(); err != nil {
+			t.Errorf(
+				"error when deleting aliased collection '%v' with alias '%v': %v",
+				collectionName.String(), collectionAlias.String(), err.Error(),
+			)
+		}
+	}
+
+	if err = svc.SetAlias(testAlias, collection.Dbus.Path()); err != nil {
+		t.Errorf(
+			"error when setting an alias '%v' for aliased collection '%v' (original alias '%v')",
+			testAlias, collectionName.String(), collectionAlias.String(),
+		)
+	}
+
+	if err = svc.Close(); err != nil {
+		t.Errorf("could not close Service.Session: %v", err.Error())
+	}
+}
+
+/*
+	TestService_GetCollection tests the following internal functions/methods via nested calls:
+
+		(all calls in TestService_CreateAliasedCollection)
+		Service.GetCollection
+			(all calls in TestService_Collections)
+			Service.ReadAlias
+
+*/
+func TestService_GetCollection(t *testing.T) {
+
+	var err error
+	var svc *Service
+	var coll *Collection
+
+	if svc, err = NewService(); err != nil {
+		t.Fatalf("could not get new Service via NewService: %v", err.Error())
+	}
+
+	if coll, err = svc.GetCollection(defaultCollection); err != nil {
+		t.Errorf("failed to get collection '%v' via Service.GetCollection: %v", defaultCollection, err.Error())
+	} else {
+		t.Logf("got collection '%v' via reference '%v'", coll.name, defaultCollection)
+	}
+
+	if err = svc.Close(); err != nil {
+		t.Errorf("could not close Service.Session: %v", err.Error())
+	}
+}
+
+/*
+	TestService_Secrets tests the following internal functions/methods via nested calls:
+
+		(all calls in TestNewService)
+		(all calls in TestService_CreateAliasedCollection)
+		Service.CreateCollection
+		Service.SearchItems
+		Service.GetSecrets
+
+*/
+/* TODO: left off on this.
+func TestService_Secrets(t *testing.T) {
+
+	var err error
+	var svc *Service
+	var collection *Collection
+	var itemPaths []dbus.ObjectPath
+
+	if svc, err = NewService(); err != nil {
+		t.Fatalf("could not get new Service via NewService: %v", err.Error())
+	}
+
+	if collection, err = svc.CreateCollection(collectionName.String()); err != nil {
+		t.Errorf("could not create collection '%v': %v", collectionName.String(), err.Error())
+	}
+
+	if err = svc.Close(); err != nil {
+		t.Errorf("could not close Service.Session: %v", err.Error())
+	}
+}
+*/
+
+// service.Lock & service.Unlock
diff --git a/session_funcs.go b/session_funcs.go
index e3dbd00..e8210a5 100644
--- a/session_funcs.go
+++ b/session_funcs.go
@@ -10,7 +10,11 @@ import (
 	NewSession returns a pointer to a new Session based on a Service and a dbus.ObjectPath.
 	You will almost always want to use Service.GetSession or Service.OpenSession instead.
 */
-func NewSession(service *Service, path dbus.ObjectPath) (session *Session) {
+func NewSession(service *Service, path dbus.ObjectPath) (session *Session, err error) {
+
+	if _, err = validConnPath(service.Conn, path); err != nil {
+		return
+	}
 
 	var ssn Session = Session{
 		DbusObject: &DbusObject{