Add Label component test

Author: louislo7

webapp/__tests__/Label.spec.js

@@ -0,0 +1,38 @@
+import React from "react";
+import Label from "../javascript/components/Label";
+import { configure } from "enzyme";
+import Adapter from "enzyme-adapter-react-16";
+import { shallow, mount, render } from "enzyme";
+import { Provider } from "react-redux";
+import configureStore from "redux-mock-store";
+
+const mockStore = configureStore();
+configure({ adapter: new Adapter() });
+let store, wrapper;
+const initialState = { label: { name: "Expensive Process", value: 32 } };
+
+beforeEach(() => {
+  store = mockStore(initialState);
+  wrapper = mount(
+    <Provider store={store}>
+      <Label />
+    </Provider>
+  );
+});
+
+describe("Label is correctly rendered", () => {
+  it("Correctly renders name", () => {
+    expect(
+      wrapper.contains(
+        <span className="label-name">{initialState.label.name}</span>
+      )
+    ).toBe(true);
+  });
+  it("Correctly renders value", () => {
+    expect(
+      wrapper.contains(
+        <span className="label-value">{initialState.label.value}</span>
+      )
+    ).toBe(true);
+  });
+});