teamdigitale/italia-app

import ROUTES from "../../../navigation/routes";
import { applicationChangeState } from "../../actions/application";
import { setDebugModeEnabled } from "../../actions/debug";
import {
  isAllowedSnapshotCurrentScreen,
  screenBlackList
} from "../allowedSnapshotScreens";
import { appReducer } from "../index";
import { GlobalState } from "../types";

jest.mock("@react-native-async-storage/async-storage", () => ({
  AsyncStorage: jest.fn()
}));

jest.mock("react-native-share", () => ({
  open: jest.fn()
}));

describe("allowed Snapshot Screens Selector test", () => {
  it("Test high level composition", () => {
    // with a blacklisted screen, expected false
    expect(
      isAllowedSnapshotCurrentScreen.resultFunc(ROUTES.WALLET_ADD_CARD, false)
    ).toBeFalsy();
    // with the debug mode enabled, expected true
    expect(
      isAllowedSnapshotCurrentScreen.resultFunc(
        "NOT_SNAPSHOTTABLE_SCREEN",
        true
      )
    ).toBeTruthy();
  });
  it("Test all blacklisted screens", () => {
    screenBlackList.forEach(screen => {
      expect(
        isAllowedSnapshotCurrentScreen.resultFunc(screen, false)
      ).toBeFalsy();
      expect(
        isAllowedSnapshotCurrentScreen.resultFunc(screen, true)
      ).toBeTruthy();
    });
  });
  it("Test re-computations only when store interesting part changes", () => {
    // eslint-disable-next-line
    let globalState: GlobalState = appReducer(
      undefined,
      applicationChangeState("active")
    );
    expect(isAllowedSnapshotCurrentScreen(globalState)).toBeTruthy();
    expect(isAllowedSnapshotCurrentScreen(globalState)).toBeTruthy();
    // with the same state, only one computation is expected
    expect(isAllowedSnapshotCurrentScreen.recomputations()).toBe(1);
    globalState = appReducer(globalState, setDebugModeEnabled(false));
    expect(isAllowedSnapshotCurrentScreen(globalState)).toBeTruthy();
    // with a change of state but the same values, no new computation are expected
    expect(isAllowedSnapshotCurrentScreen.recomputations()).toBe(1);
    globalState = appReducer(globalState, setDebugModeEnabled(true));
    expect(isAllowedSnapshotCurrentScreen(globalState)).toBeTruthy();
    expect(isAllowedSnapshotCurrentScreen(globalState)).toBeTruthy();
    // with a change of state and change in the interested values, a new computation is expected
    expect(isAllowedSnapshotCurrentScreen.recomputations()).toBe(2);
    globalState = appReducer(globalState, applicationChangeState("background"));
    expect(isAllowedSnapshotCurrentScreen(globalState)).toBeTruthy();
    // with a change of state but not in the interested part, no new computation are expected
    expect(isAllowedSnapshotCurrentScreen.recomputations()).toBe(2);
  });
});