kandimat/redaktions-app/src/integration-tests/category-list.integration.test.tsx

import React from "react";
import { fireEvent, render, screen, waitFor } from "@testing-library/react";
import { MockedProvider, MockedResponse } from "@apollo/client/testing";
import { MemoryRouter } from "react-router-dom";
import CategoryList from "../components/CategoryList";
import { SnackbarProvider } from "notistack";
import {
  categoryNodesMock,
  getAllCategoriesMock,
  getCategoryByIdMock,
} from "../backend/queries/category.mock";
import {
  addCategoryMock,
  deleteCategoryMock,
  editCategoryMock,
} from "../backend/mutations/category.mock";
import {
  expandAccordionAndGetIconButtons,
  queryAllAddIconButtons,
  queryAllEditIconButtons,
} from "./test-helper";

function renderCategoryList(additionalMocks?: Array<MockedResponse>) {
  const initialMocks = [...getAllCategoriesMock, ...getCategoryByIdMock];
  const allMocks = additionalMocks
    ? [...initialMocks, ...additionalMocks]
    : initialMocks;
  return render(
    <MockedProvider mocks={allMocks}>
      <MemoryRouter>
        <SnackbarProvider>
          <CategoryList />
        </SnackbarProvider>
      </MemoryRouter>
    </MockedProvider>
  );
}

const waitForInitialCategoriesToRender = async (): Promise<
  Array<HTMLElement>
> => {
  const numberOfCategoriesInMockQuery = categoryNodesMock.length;
  let categoryCards: Array<HTMLElement> = [];
  await waitFor(() => {
    categoryCards = screen.queryAllByRole("button", { name: /Category [1-2]/ });
    expect(categoryCards.length).toEqual(numberOfCategoriesInMockQuery);
  });
  return categoryCards;
};

describe("The CategoryList", () => {
  test("displays the existing categories, but not the details of it", async () => {
    renderCategoryList();

    const categoryCards = await waitForInitialCategoriesToRender();
    categoryCards.forEach((card) => {
      expect(card.innerHTML).toMatch(/Category [1-2]/);
    });
    expect(queryAllEditIconButtons()).toHaveLength(0);
  });

  test("enables toggling details on each category", async () => {
    renderCategoryList();

    // Initial state: Every category card is not expanded
    const categoryCards = await waitForInitialCategoriesToRender();

    // Expand first category card
    await expandAccordionAndGetIconButtons(categoryCards[0]);

    // Shrink first category card again
    fireEvent.click(categoryCards[0]);
    await waitFor(() => {
      expect(queryAllEditIconButtons()).toHaveLength(0);
    });
  });

  test("enables editing a category title", async () => {
    renderCategoryList(editCategoryMock);

    const categoryCards = await waitForInitialCategoriesToRender();
    const { editIconButton } = await expandAccordionAndGetIconButtons(
      categoryCards[0]
    );

    // open edit dialog
    expect(screen.queryByText(/Kategorie bearbeiten/)).toBeNull();
    fireEvent.click(editIconButton);
    await waitFor(() => {
      expect(screen.queryByText(/Kategorie bearbeiten/)).not.toBeNull();
    });

    // change category title
    const categoryTitleField = screen.getByDisplayValue(/Category 1/);
    fireEvent.change(categoryTitleField, {
      target: { value: "New title for Category 1" },
    });
    await waitFor(() => {
      expect(screen.queryByDisplayValue(/New title for /)).not.toBeNull();
    });

    // call backend and assert apollo cache update
    const confirmButton = screen.getByRole("button", { name: /Speichern/ });
    fireEvent.click(confirmButton);
    await waitFor(() => {
      expect(screen.queryByText(/Kategorie bearbeiten/)).toBeNull();
      expect(screen.queryByText(/New title for Category 1/)).not.toBeNull();
    });
  });

  test("enables adding a category", async () => {
    renderCategoryList(addCategoryMock);
    await waitForInitialCategoriesToRender();

    // open add dialog
    const dialogIdentifier = /Neue Kategorie erstellen/;
    expect(screen.queryByText(dialogIdentifier)).toBeNull();
    const addButton = queryAllAddIconButtons()[0];
    fireEvent.click(addButton);
    await waitFor(() => {
      expect(screen.queryByText(dialogIdentifier)).not.toBeNull();
    });

    // change category title
    const categoryTitleField = screen.getByLabelText(/Zusammenfassung/);
    fireEvent.change(categoryTitleField, { target: { value: "New category" } });
    await waitFor(() => {
      expect(screen.queryByDisplayValue(/New category/)).not.toBeNull();
    });

    // call backend and assert apollo cache update
    const confirmButton = screen.getByRole("button", { name: /Erstellen/ });
    fireEvent.click(confirmButton);
    await waitFor(() => {
      expect(screen.queryByText(dialogIdentifier)).toBeNull();
      expect(screen.queryByText(/New category/)).not.toBeNull();
    });
  });

  test("enables deleting a category", async () => {
    renderCategoryList(deleteCategoryMock);

    const categoryCards = await waitForInitialCategoriesToRender();
    expect(screen.queryByText(/Category 2/)).not.toBeNull();
    const { deleteIconButton } = await expandAccordionAndGetIconButtons(
      categoryCards[1]
    );

    // open delete confirmation dialog
    expect(screen.queryByText(/Kategorie löschen/)).toBeNull();
    fireEvent.click(deleteIconButton);
    await waitFor(() => {
      expect(screen.queryByText(/Kategorie löschen/)).not.toBeNull();
    });

    // call backend and assert apollo cache update
    const confirmButton = screen.getByRole("button", { name: /Löschen/ });
    fireEvent.click(confirmButton);
    await waitFor(() => {
      expect(screen.queryByText(/Kategorie löschen/)).toBeNull();
      expect(screen.queryByText(/Category 2/)).toBeNull();
    });
  });
});