diff --git a/search/index_test.go b/search/index_test.go
index 11be130..f23127e 100644
--- a/search/index_test.go
+++ b/search/index_test.go
@@ -3,6 +3,8 @@ package search
 import (
 	"reflect"
 	"testing"
+
+	"github.com/wahyd4/zendesk/index"
 )
 
 func Test_extractFieldValues(t *testing.T) {
@@ -54,3 +56,116 @@ func Test_extractFieldValues(t *testing.T) {
 		})
 	}
 }
+
+func TestAPP_BuildIndexes(t *testing.T) {
+	type fields struct {
+		jsonContents map[string][]byte
+	}
+	tests := []struct {
+		name    string
+		fields  fields
+		wantErr bool
+	}{
+		{
+			name: "can build index for the application",
+			fields: fields{
+				jsonContents: map[string][]byte{
+					"organisations": []byte(`[{
+						"_id": 999,
+						"url": "http://initech.zendesk.com/api/v2/organizations/101.json",
+						"external_id": "9270ed79-35eb-4a38-a46f-35725197ea8d",
+						"name": "Enthaze",
+						"domain_names": [
+							"kage.com",
+							"ecratic.com",
+							"endipin.com",
+							"zentix.com"
+						],
+						"created_at": "2016-05-21T11:10:28 -10:00",
+						"details": "MegaCorp",
+						"shared_tickets": false,
+						"tags": [
+							"Fulton",
+							"West",
+							"Rodriguez",
+							"Farley"
+						]}]`),
+					"users": []byte(`[{
+						"_id": 222,
+						"url": "http://initech.zendesk.com/api/v2/users/1.json",
+						"external_id": "74341f74-9c79-49d5-9611-87ef9b6eb75f",
+						"name": "Francisca Rasmussen",
+						"alias": "Miss Coffey",
+						"created_at": "2016-04-15T05:19:46 -10:00",
+						"active": true,
+						"verified": true,
+						"shared": false,
+						"locale": "en-AU",
+						"timezone": "Sri Lanka",
+						"last_login_at": "2013-08-04T01:03:27 -10:00",
+						"email": "coffeyrasmussen@flotonic.com",
+						"phone": "8335-422-718",
+						"signature": "Don't Worry Be Happy!",
+						"organization_id": 111,
+						"tags": [
+						  "Springville",
+						  "Sutton",
+						  "Hartsville/Hartley",
+						  "Diaperville"
+						],
+						"suspended": true,
+						"role": "admin"
+					  }]`),
+					"tickets": []byte(`[{
+						"_id": "436bf9b0-1147-4c0a-8439-6f79833bff5b",
+						"url": "http://initech.zendesk.com/api/v2/tickets/436bf9b0-1147-4c0a-8439-6f79833bff5b.json",
+						"external_id": "9210cdc9-4bee-485f-a078-35396cd74063",
+						"created_at": "2016-04-28T11:19:34 -10:00",
+						"type": "incident",
+						"subject": "A Catastrophe in Korea (North)",
+						"description": "Nostrud ad sit velit cupidatat laboris ipsum nisi amet laboris ex exercitation amet et proident. Ipsum fugiat aute dolore tempor nostrud velit ipsum.",
+						"priority": "high",
+						"status": "pending",
+						"submitter_id": 222,
+						"assignee_id": 222,
+						"organization_id": 999,
+						"tags": [
+						  "Ohio",
+						  "Pennsylvania",
+						  "American Samoa",
+						  "Northern Mariana Islands"
+						],
+						"has_incidents": false,
+						"due_at": "2016-07-31T02:37:50 -10:00",
+						"via": "web"
+					  }]`),
+				},
+			},
+			wantErr: false,
+		},
+		{
+			name: "cannot build index for the application, due to the json content is not valid",
+			fields: fields{
+				jsonContents: map[string][]byte{
+					"organisations": []byte(`invalid json string`),
+				},
+			},
+			wantErr: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			app := &APP{
+				jsonContents: tt.fields.jsonContents,
+				indexes:      make(map[string]index.SearchIndex),
+			}
+			if err := app.BuildIndexes(); (err != nil) != tt.wantErr {
+				t.Errorf("APP.BuildIndexes() error = %v, wantErr %v", err, tt.wantErr)
+			}
+			if !tt.wantErr && len(app.indexes) == 0 {
+				t.Errorf("expected have some index but got nothing")
+			}
+		})
+	}
+}