kandimat/redaktions-app/src/integration-tests/question-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 QuestionList from "../components/QuestionList";
import {SnackbarProvider} from "notistack";
import {getAllQuestionsMock, questionNodesMock} from "../backend/queries/question.mock";
import {getAllCategoriesMock} from "../backend/queries/category.mock";
import {addQuestionMock, deleteQuestionMock, editQuestionMock} from "../backend/mutations/question.mock";
import {
  expandAccordionAndGetIconButtons,
  queryAllAddIconButtons,
  queryAllEditIconButtons
} from "./test-helper";


describe('The QuestionList', () => {
  test('displays the existing questions, but not the details of it', async () => {
    renderQuestionList();

    const questionCards = await waitForInitialQuestionsToRender()
    questionCards.forEach(card => {
      expect(card.innerHTML).toMatch(/Question [1-3]\?/)
    })
    expect(questionCards[0].innerHTML).toMatch(/Category 1/);
    expect(queryAllEditIconButtons()).toHaveLength(0)
  });

  test('enables toggling details on each question', async () => {
    renderQuestionList();

    // Initial state: Every question card is not expanded
    const questionCards = await waitForInitialQuestionsToRender()

    // Expand first question card
    await expandAccordionAndGetIconButtons(questionCards[0])

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

  test('enables editing a question title', async () => {
    renderQuestionList(editQuestionMock);

    const questionCards = await waitForInitialQuestionsToRender();
    const {editIconButton} = await expandAccordionAndGetIconButtons(questionCards[0]);

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

    // change question title
    const questionTitleField = screen.getByDisplayValue(/Question 1/);
    fireEvent.change(questionTitleField, {target: {value: "New title for Question 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(/Frage bearbeiten/)).toBeNull();
      expect(screen.queryByText(/New title for Question 1/)).not.toBeNull()
    })
  });

  test('enables adding a question', async () => {
    renderQuestionList(addQuestionMock);
    await waitForInitialQuestionsToRender();

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

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

  test('enables deleting a question', async () => {
    renderQuestionList(deleteQuestionMock);

    const questionCards = await waitForInitialQuestionsToRender();
    expect(screen.queryByText(/Question 2/)).not.toBeNull();
    const {deleteIconButton} = await expandAccordionAndGetIconButtons(questionCards[1]);

    // open delete confirmation dialog
    expect(screen.queryByText(/Frage löschen/)).toBeNull();
    fireEvent.click(deleteIconButton);
    await waitFor(() => {
      expect(screen.queryByText(/Frage 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(/Frage löschen/)).toBeNull();
      expect(screen.queryByText(/Question 2/)).toBeNull();
    })
  });
});

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

const waitForInitialQuestionsToRender = async (): Promise<Array<HTMLElement>> => {
  const numberOfQuestionsInMockQuery = questionNodesMock.length;
  let questionCards: Array<HTMLElement> = [];
  await waitFor(() => {
    questionCards = screen.queryAllByRole("button", {name: /Question [1-3]\?/})
    expect(questionCards.length).toEqual(numberOfQuestionsInMockQuery);
  });
  return questionCards;
}