bottender-compose/lib/__tests__/logic.spec.js

An utility library for bottender and higher-order handlers

"use strict";

const {
  not,
  and,
  or,
  alwaysTrue,
  alwaysFalse
} = require('../logic');

it('#not should work', () => {
  const context = {
    event: {
      isText: true,
      text: 'ok'
    }
  };

  const isText = () => _context => _context.event.isText;

  const predicate = not(isText());
  expect(predicate(context)).toBe(false);
});
it('#and should work', () => {
  const context = {
    event: {
      isText: true,
      text: 'ok'
    }
  };

  const isText = () => _context => _context.event.isText;

  const isOk = () => _context => _context.event.text === 'ok';

  const predicate = and([isText, isOk]);
  expect(predicate(context)).toBe(true);
});
it('#or should work', () => {
  const context = {
    event: {
      isText: true,
      text: 'not ok'
    }
  };

  const isText = () => _context => _context.event.isText;

  const isOk = () => _context => _context.event.text === 'ok';

  const predicate = or([isText, isOk]);
  expect(predicate(context)).toBe(true);
});
it('#alwaysTrue should work', () => {
  const context = {
    event: {
      isText: true,
      text: 'ok'
    }
  };
  const predicate = alwaysTrue();
  expect(predicate(context)).toBe(true);
});
it('#alwaysFalse should work', () => {
  const context = {
    event: {
      isText: true,
      text: 'ok'
    }
  };
  const predicate = alwaysFalse();
  expect(predicate(context)).toBe(false);
});