PDOMFuzzer¶

Overview¶

Runs PDOM-tree-related scenery operations randomly (with assertions) to try to find any bugs.

@author Jonathan Olson <jonathan.olson@colorado.edu>

Class PDOMFuzzer¶

import { PDOMFuzzer } from 'scenerystack/scenery';

Constructor¶

new PDOMFuzzer( nodeCount, logToConsole, seed )¶

Instance Methods¶

step()¶

Runs one action randomly (printing out the action and result). @public

enumerateActions()¶

Find all of the possible actions that are legal. @private

@returns {Array.<Object>} - like { text: {string}, execute: {function} }

isAddChildLegal( parent, child )¶

Checks whether the child can be added (as a child) to the parent. @private

@param {Node} parent @param {Node} child @returns {boolean}

powerSet( list )¶

Returns the power set of a set (all subsets). @private

@param {Array.<>} list @returns {Array.<Array.<>>}

isPDOMOrderChangeLegal( node, order )¶

Returns whether an accessible order change is legal. @private

@param {Node} node @param {Array.<Node|null>|null} order

isAcyclic( parent, child, hasConnection )¶

Checks whether a connection (parent-child or accessible order) is legal (doesn't cause a cycle). @private

@param {Node} parent @param {Node} child @param {function} hasConnection - determines whether there is a parent-child-style relationship between params @returns {boolean}

dispose()¶

Releases references @public

Source Code¶

See the source for PDOMFuzzer.js in the scenery repository.