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diff --git a/spec/javascripts/serverless/store/mutations_spec.js b/spec/javascripts/serverless/store/mutations_spec.js
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+++ b/spec/javascripts/serverless/store/mutations_spec.js
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+import mutations from '~/serverless/store/mutations';
+import * as types from '~/serverless/store/mutation_types';
+import { mockServerlessFunctions, mockMetrics } from '../mock_data';
+
+describe('ServerlessMutations', () => {
+  describe('Functions List Mutations', () => {
+    it('should ensure loading is true', () => {
+      const state = {};
+
+      mutations[types.REQUEST_FUNCTIONS_LOADING](state);
+
+      expect(state.isLoading).toEqual(true);
+    });
+
+    it('should set proper state once functions are loaded', () => {
+      const state = {};
+
+      mutations[types.RECEIVE_FUNCTIONS_SUCCESS](state, mockServerlessFunctions);
+
+      expect(state.isLoading).toEqual(false);
+      expect(state.hasFunctionData).toEqual(true);
+      expect(state.functions).toEqual(mockServerlessFunctions);
+    });
+
+    it('should ensure loading has stopped and hasFunctionData is false when there are no functions available', () => {
+      const state = {};
+
+      mutations[types.RECEIVE_FUNCTIONS_NODATA_SUCCESS](state);
+
+      expect(state.isLoading).toEqual(false);
+      expect(state.hasFunctionData).toEqual(false);
+      expect(state.functions).toBe(undefined);
+    });
+
+    it('should ensure loading has stopped, and an error is raised', () => {
+      const state = {};
+
+      mutations[types.RECEIVE_FUNCTIONS_ERROR](state, 'sample error');
+
+      expect(state.isLoading).toEqual(false);
+      expect(state.hasFunctionData).toEqual(false);
+      expect(state.functions).toBe(undefined);
+      expect(state.error).not.toBe(undefined);
+    });
+  });
+
+  describe('Function Details Metrics Mutations', () => {
+    it('should ensure isLoading and hasPrometheus data flags indicate data is loaded', () => {
+      const state = {};
+
+      mutations[types.RECEIVE_METRICS_SUCCESS](state, mockMetrics);
+
+      expect(state.isLoading).toEqual(false);
+      expect(state.hasPrometheusData).toEqual(true);
+      expect(state.graphData).toEqual(mockMetrics);
+    });
+
+    it('should ensure isLoading and hasPrometheus data flags are cleared indicating no functions available', () => {
+      const state = {};
+
+      mutations[types.RECEIVE_METRICS_NODATA_SUCCESS](state);
+
+      expect(state.isLoading).toEqual(false);
+      expect(state.hasPrometheusData).toEqual(false);
+      expect(state.graphData).toBe(undefined);
+    });
+
+    it('should properly indicate an error', () => {
+      const state = {};
+
+      mutations[types.RECEIVE_METRICS_ERROR](state, 'sample error');
+
+      expect(state.hasPrometheusData).toEqual(false);
+      expect(state.error).not.toBe(undefined);
+    });
+
+    it('should properly indicate when prometheus is installed', () => {
+      const state = {};
+
+      mutations[types.RECEIVE_METRICS_NO_PROMETHEUS](state);
+
+      expect(state.hasPrometheus).toEqual(false);
+      expect(state.hasPrometheusData).toEqual(false);
+    });
+  });
+});