bonsai-analyzer/bin/stats/__tests__/getCollapsableParentOf.test.js

Trim your dependency tree.

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");

var _getCollapsableParentOf = _interopRequireDefault(require("../getCollapsableParentOf"));

var _getExtendedModulesById = _interopRequireDefault(require("../getExtendedModulesById"));

var _defaults = require("../../__test_helpers__/defaults");

const ENTRY_ZERO = (0, _defaults.defaultModule)({
  id: 0,
  reasons: []
});
const ENTRY_ONE = (0, _defaults.defaultModule)({
  id: 1,
  reasons: []
});
const ZERO_A = (0, _defaults.defaultModule)({
  id: 2,
  reasons: [(0, _defaults.reasonFromModule)(ENTRY_ZERO)]
});
const COMMON = (0, _defaults.defaultModule)({
  id: 3,
  reasons: [(0, _defaults.reasonFromModule)(ENTRY_ZERO), (0, _defaults.reasonFromModule)(ENTRY_ONE)]
});
const COMMON_UTIL = (0, _defaults.defaultModule)({
  id: 4,
  reasons: [(0, _defaults.reasonFromModule)(COMMON)]
});
const BIG_MODULE = (0, _defaults.defaultModule)({
  id: 5,
  reasons: [(0, _defaults.reasonFromModule)(ZERO_A), (0, _defaults.reasonFromModule)(COMMON)]
});
const ENTRY_ONE_A = (0, _defaults.defaultModule)({
  id: 600,
  reasons: [(0, _defaults.reasonFromModule)(ENTRY_ONE)]
});
const ENTRY_ONE_B = (0, _defaults.defaultModule)({
  id: 300,
  reasons: [(0, _defaults.reasonFromModule)(ENTRY_ONE_A)]
});
const MODULES = [ENTRY_ZERO, ENTRY_ONE, ZERO_A, COMMON, COMMON_UTIL, BIG_MODULE, ENTRY_ONE_A, ENTRY_ONE_B];
const modulesById = (0, _getExtendedModulesById.default)(MODULES);
describe('getCollapsableParentOf', () => {
  it('should return null when the requested moduleid is not in the map', () => {
    expect((0, _getCollapsableParentOf.default)(modulesById, 'foo')).toBeNull();
  });
  it('should return null when the requested module is not required by anything', () => {
    expect((0, _getCollapsableParentOf.default)(modulesById, ENTRY_ZERO.id)).toBeNull();
  });
  it('should return null when many things require this, but it has no children', () => {
    expect((0, _getCollapsableParentOf.default)(modulesById, BIG_MODULE.id)).toBeNull();
  });
  it('should be the collapsable parent when many things require this, and it has children', () => {
    const collapsable = (0, _getCollapsableParentOf.default)(modulesById, COMMON.id);
    expect(collapsable).not.toBeNull();
    expect(collapsable).toEqual(expect.objectContaining(COMMON));
  });
  it('should travel up to find the collapsable parent', () => {
    const collapsable = (0, _getCollapsableParentOf.default)(modulesById, COMMON_UTIL.id);
    expect(collapsable).not.toBeNull();
    expect(collapsable).toEqual(expect.objectContaining(COMMON));
  });
});