Add unit tests for CarbonEmissions component

client/src/components/CarbonEmissions/CarbonEmissions.test.js

@@ -0,0 +1,54 @@
+import { getLocalVue } from "tests/jest/helpers";
+import CarbonEmissions from "./CarbonEmissions";
+import { mount } from "@vue/test-utils";
+
+const localVue = getLocalVue();
+
+const oneGibibyeMemoryInMebibyte = 1024;
+const oneHourInSeconds = 3600;
+const testServerInstance = {
+  name: 'some-server-name',
+  cpuInfo: {
+    modelName: 'some-processor-name',
+    totalAvailableCores: 10,
+    tdp: 100
+  }
+}
+
+describe("CarbonEmissions/CarbonEmissions.vue", () => {
+    it("correctly calculated carbon emissions.", async () => {
+        const wrapper = mount(CarbonEmissions, {
+            propsData: {
+              estimatedServerInstance: testServerInstance,
+              jobRuntimeInSeconds: oneHourInSeconds,
+              coresAllocated: 1,
+              memoryAllocatedInMebibyte:  oneGibibyeMemoryInMebibyte,
+            },
+            localVue,
+        });
+
+      const cpuEmissions = wrapper.find("#cpu-carbon-emissions").text();
+      const memoryEmissions = wrapper.find("#memory-carbon-emissions").text();
+      const cpuEnergyUsage = wrapper.find("#cpu-energy-usage").text();
+      const memoryEnergyUsage = wrapper.find("#memory-energy-usage").text();
+
+      expect(cpuEmissions).toMatch("8 g CO2e");
+      expect(memoryEmissions).toMatch("295 mg CO2e");
+      expect(cpuEnergyUsage).toMatch("17 mW⋅h");
+      expect(memoryEnergyUsage).toMatch("1 mW⋅h");
+    });
+
+    it("does not render memory estimates when no value can be determined.", () => {
+        const wrapper = mount(CarbonEmissions, {
+            propsData: {
+              estimatedServerInstance: testServerInstance,
+              jobRuntime: 1,
+              coresAllocated: 1,
+            },
+            localVue,
+        });
+
+       expect(wrapper.find("#memory-carbon-emissions").exists()).toBe(false);
+       expect(wrapper.find("#memory-energy-usage").exists()).toBe(false);
+    });
+});