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test.js
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test.js
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var Immutable = require('seamless-immutable');
var assert = require('chai').assert;
var data = require('./data.js');
describe('a change to prop of deeply nested obj', function () {
var currentState;
beforeEach(function(){
currentState = Immutable(data);
});
it('we change a deeply nested property', function () {
var nextState = currentState.setIn(['games', 0, 'tiles', 1, 'isRevealed'], true);
assert(currentState !== nextState, 'data structure is not equal');
assert(nextState.games[0].tiles !== currentState.games[0].tiles,'array containing changed item is NOT equal');
assert(nextState.games[0].tiles[0] === currentState.games[0].tiles[0], 'unchanged array members are equal');
});
// perhaps a nice to have
it('we update deeply nested propery with same value and nextState evaluates EQUAL', function () {
var nextState = currentState.setIn(['games', 0, 'tiles', 1, 'isRevealed'], false);
assert(currentState === nextState);
});
it('we update deeply nested propery with same value and nextState evaluates EQUAL', function () {
var nextState = currentState.setIn(['games', 0, 'tiles', 1, 'isRevealed'], false);
assert(currentState === nextState);
});
it('sorts a deeply nested array', function(){
var func = function(arg){
return arg.concat(['q']);
};
var nextState = currentState.updateIn(['games',0,'tiles', 0, 'tries'],func);
assert(nextState !== currentState);
assert(nextState.games[0].tiles[0].tries[3] === 'q', 'update worked');
assert(nextState.games[0].tiles[0].tries !== currentState.games[0].tiles[0].tries, 'array is not equal');
assert(nextState.games[0].tiles[0].tries[0] === currentState.games[0].tiles[0].tries[0], 'members are equal');
});
});