@applicaster/zapp-react-native-ui-components/Components/MasterCell/MappingFunctions/__tests__/MappingFunctions.test.js

Applicaster Zapp React Native ui components for the Quick Brick App

import {
  functionForName,
  pathWithFallback,
  stringifyDateFromPath,
} from "../../MappingFunctions";
import { entry } from "../../__tests__/testEntry";

describe("functionForName", () => {
  it("returns a function matching the func name", () => {
    const myFunction = functionForName("stringify_date_from_path");
    expect(myFunction).toBeFunction();
    expect(myFunction.name).toBe("stringifyDateFromPath");
  });

  it("returns 'pathWithFallback' function as a fallback when no matching func name is found", () => {
    const myFunction = functionForName("does_not_exist");
    expect(myFunction.name).toBe("pathWithFallback");
  });

  it("returns 'pathWithFallback' function as a default", () => {
    const myFunction = functionForName(undefined);
    expect(myFunction.name).toBe("pathWithFallback");
  });
});

describe("pathWithFallback", () => {
  it("returns the value found in the obj, according to given path", () => {
    expect(pathWithFallback(entry, ["author", "name"])).toBe(entry.author.name);
  });

  it("returns an empty string if not found", () => {
    expect(pathWithFallback(entry, ["does_not_exist"])).toBe("");
  });
});

describe("stringifyDateFromPath", () => {
  it("returns a stringified format of the ISO8061 date found in path", () => {
    expect(stringifyDateFromPath(entry, ["published"])).toBe(
      new Date("2019/03/17 02:17:46 +0000").toDateString()
    );
  });

  it("returns an empty string if found value is not a valid ISO8061 date", () => {
    expect(stringifyDateFromPath(entry, ["title"])).toBe("");
  });

  it("returns an empty string if not found", () => {
    expect(stringifyDateFromPath(entry, ["does_not_exist"])).toBe("");
  });
});