diff --git a/models/tosca/addOlt_test.go b/models/tosca/addOlt_test.go
new file mode 100644
index 0000000..1b2f667
--- /dev/null
+++ b/models/tosca/addOlt_test.go
@@ -0,0 +1,79 @@
+/*
+   Copyright 2017 the original author or authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+package tosca_test
+
+import (
+	"fmt"
+	"strings"
+	"testing"
+
+	"gerrit.opencord.org/abstract-olt/models/tosca"
+)
+
+var output = `tosca_definitions_version: tosca_simple_yaml_1_0
+imports:
+- custom_types/oltdevice.yaml
+- custom_types/onudevice.yaml
+- custom_types/ponport.yaml
+- custom_types/voltservice.yaml
+description: Create a simulated OLT Device in VOLTHA
+topology_template:
+  node_templates:
+    service#volt:
+      type: tosca.nodes.VOLTService
+      properties:
+        name: volt
+        must-exist: true
+    olt_device:
+      type: tosca.nodes.OLTDevice
+      properties:
+        name: myName
+        device_type: openolt
+        host: 192.168.1.1
+        port: 9191
+        outer_tpid: "0x8100"
+        uplink: "65536"
+        nas_id: my_clli
+      requirements:
+      - volt_service:
+          node: service#volt
+          relationship: tosca.relationships.BelongsToOne
+`
+
+var olt tosca.OltProvsion
+
+func TestAddOlt_NewOltProvsion(t *testing.T) {
+	fmt.Println("In TestAddOlt_NewOltProvsion")
+	olt = tosca.NewOltProvision("my_clli", "myName", "openolt", "192.168.1.1", 9191)
+	fmt.Printf("%v\n\n", olt)
+}
+
+func TestAddOlt_ToYaml(t *testing.T) {
+	y, err := olt.ToYaml()
+	if err != nil {
+		t.Fatalf("olt.ToYaml() failed with %v\n", err)
+	}
+	x := strings.Compare(y, output)
+	if x != 0 {
+		t.Fatal("ToYaml didn't produce the expected yaml")
+	}
+	fmt.Printf("Compare is %d\n", x)
+
+	fmt.Printf(y)
+	fmt.Println("******")
+	fmt.Print(output)
+	fmt.Println("******")
+}