Populate the store with server data

billing.spec.js

it("renders the invoice coming from server", (done) => {
    const invoice = {
        reference: '0001',
        amount: '10.00',
    };
    spyNotifier.slowOperationFinished = () => {
        let billRow = page.find(BillsTable).first().find(BillRow);
        expect(billRow.length).toBe(1);
        done();
    };
    stubApi.getInvoices = () =>{
        return Promise.resolve([invoice]);
    };

    createPage();
});

function createPage() {
    let BillsPage = createBillsPage(stubApi, spyNotifier);
    page = mount(
        <Provider store={store}>
            <BillsPage/>
        </Provider>);
}