diff --git a/xos/core/xoslib/ngXosViews/ceilometerDashboard/spec/ceilometer.test.js b/xos/core/xoslib/ngXosViews/ceilometerDashboard/spec/ceilometer.test.js
index 8274853..9bfb5b6 100644
--- a/xos/core/xoslib/ngXosViews/ceilometerDashboard/spec/ceilometer.test.js
+++ b/xos/core/xoslib/ngXosViews/ceilometerDashboard/spec/ceilometer.test.js
@@ -92,6 +92,46 @@
       expect(vm.chartMeters[0].resource_id).toBe('anotherTenant')
       expect(vm.chartMeters[0].resource_name).toBe('anotherName')
     });
+
+    describe('The format sample labels method', () => {
+      it('should create an array of unique labels', () => {
+        // unique because every resource has multiple samples (time-series)
+        const samples = [
+          {resource_id: 1, resource_name: 'fakeName'},
+          {resource_id: 1, resource_name: 'fakeName'},
+          {resource_id: 2, resource_name: 'anotherName'},
+          {resource_id: 2, resource_name: 'anotherName'}
+        ];
+
+        const result = vm.formatSamplesLabels(samples);
+
+        expect(result.length).toBe(2);
+        expect(result[0]).toEqual({id: 1, name: 'fakeName'});
+        expect(result[1]).toEqual({id: 2, name: 'anotherName'});
+      });
+    });
+  });
+});
+
+describe('The orderObjectByKey filter', () => {
+  var $filter;
+
+  beforeEach(function () {
+    module('xos.ceilometerDashboard');
+
+    inject(function (_$filter_) {
+      $filter = _$filter_;
+    });
   });
 
+  it('should order an object by the key value', function () {
+    // Arrange.
+    const list = {c: 3, b: 2, a: 1};
+
+    // call the filter function
+    const result = $filter('orderObjectByKey')(list);
+
+    // Assert.
+    expect(result).toEqual({a: 1, b: 2, c: 3});
+  });
 });
\ No newline at end of file
diff --git a/xos/core/xoslib/ngXosViews/ceilometerDashboard/src/js/main.js b/xos/core/xoslib/ngXosViews/ceilometerDashboard/src/js/main.js
index 9506139..58033e9 100644
--- a/xos/core/xoslib/ngXosViews/ceilometerDashboard/src/js/main.js
+++ b/xos/core/xoslib/ngXosViews/ceilometerDashboard/src/js/main.js
@@ -271,13 +271,14 @@
      
       this.formatSamplesLabels = (samples) => {
 
-        return lodash.uniq(samples.reduce((labels, item) => {
+        return lodash.uniq(samples, 'resource_id')
+        .reduce((labels, item) => {
           labels.push({
             id: item.resource_id,
             name: item.resource_name
           });
           return labels;
-        }, []), item => item.id);
+        }, []);
       }