add VehicleConsumer mock (#359)

src/components/Contexts/VehicleContext.jsx

@@ -4,7 +4,8 @@ import { logger } from "../../services/monitoring";
 import api from "../../services/vehiclesAPI";
 import { validateVIN } from "../../utils/validationSupplier";
 
-export const VehicleContext = React.createContext();
+const VehicleContext = React.createContext();
+export const VehicleConsumer = VehicleContext.Consumer;
 
 const validateAdd = (vehicle) => {
   if (vehicle == null) {

src/components/Contexts/__mocks__/VehicleContext.jsx

@@ -92,6 +92,10 @@ export const VehicleProvider = ({ children }) => {
   return <div data-testid="mocked-vehicleprovider">{children}</div>;
 };
 
+export const VehicleConsumer = ({ children }) => {
+  return children();
+};
+
 export const useVehicleContext = () => ({
   busy,
   models,