osync/test/sync/changeActions.test.js

Plain Javascript object synchronization framework

var expect = require('unexpected/unexpected');
var ChangeActions = require('../../src/sync/changeActions');
var ObservableObject = require('../../src/observable/observables').ObservableObject;

describe('ChangeActions', function() {
    describe('set', function() {
        describe('execute', function() {
            it('modifies object property', function() {
                var obj = {
                    property1: 0
                };
                var change = ChangeActions.set.create('property1', 1);
                ChangeActions.set.execute(obj, change);
                expect(obj.property1, 'to equal', 1);
            });
        });
        describe('create', function() {
            it('can create set property change', function() {
                var change = ChangeActions.set.create('property1', 1);
                expect(change.type, 'to equal', 'set');
                expect(change.property, 'to equal', 'property1');
                expect(change.object, 'to equal', 1);
            });
        });
    });
    describe('insert', function() {
        describe('execute', function() {
            it('unshifts an item', function() {
                var obj = {
                    array1: [2, 3, 4]
                };
                var change = ChangeActions.insert.create('array1', 1, 0);
                ChangeActions.insert.execute(obj, change);
                expect(obj.array1, 'to equal', [1, 2, 3, 4]);
            });
            it('pushes an item if index is not specified', function() {
                var obj = {
                    array1: [2, 3, 4]
                };
                var change = ChangeActions.insert.create('array1', 5);
                ChangeActions.insert.execute(obj, change);
                expect(obj.array1, 'to equal', [2, 3, 4, 5]);
            });
            it('pushes an item', function() {
                var obj = {
                    array1: [2, 3, 4]
                };
                var change = ChangeActions.insert.create('array1', 5, 3);
                ChangeActions.insert.execute(obj, change);
                expect(obj.array1, 'to equal', [2, 3, 4, 5]);
            });
            it('insers an item in the middle', function() {
                var obj = {
                    array1: [2, 4, 5]
                };
                var change = ChangeActions.insert.create('array1', 3, 1);
                ChangeActions.insert.execute(obj, change);
                expect(obj.array1, 'to equal', [2, 3, 4, 5]);
            });
            it('insers an item at the end if index is outside the boundary', function() {
                var obj = {
                    array1: [2, 3, 4]
                };
                var change = ChangeActions.insert.create('array1', 5, 4);
                ChangeActions.insert.execute(obj, change);
                expect(obj.array1, 'to equal', [2, 3, 4, 5]);
            });
        });
        describe('create', function() {
            it('can create insert array item change', function() {
                var change = ChangeActions.insert.create('array1', 5, 4);
                expect(change.type, 'to equal', 'insert');
                expect(change.property, 'to equal', 'array1');
                expect(change.object, 'to equal', 5);
                expect(change.index, 'to equal', 4);
            });
        });
    });
    describe('remove', function() {
        describe('execute', function() {
            it('removes a simple type item', function() {
                var obj = {
                    array1: [2, 3, 4]
                };
                var change = ChangeActions.remove.create('array1', 3);
                ChangeActions.remove.execute(obj, change);
                expect(obj.array1, 'to equal', [2, 4]);
            });
            it('removes object item', function() {
                var obj = {
                    array1: [{
                        _uri: 1
                    }, {
                        _uri: 2
                    }, {
                        _uri: 3
                    }]
                };
                var change = ChangeActions.remove.create('array1', {
                    _uri: 2
                });
                ChangeActions.remove.execute(obj, change);
                expect(obj.array1, 'to equal', [{
                    _uri: 1
                }, {
                    _uri: 3
                }]);
            });
            it('leaves an array untouched if cannot find a simple type item', function() {
                var obj = {
                    array1: [2, 3, 4]
                };
                var change = ChangeActions.remove.create('array1', 5);
                ChangeActions.remove.execute(obj, change);
                expect(obj.array1, 'to equal', [2, 3, 4]);
            });
            it('leaves an array untouched if cannot find object item', function() {
                var obj = {
                    array1: [{
                        _uri: 1
                    }, {
                        _uri: 2
                    }, {
                        _uri: 3
                    }]
                };
                var change = ChangeActions.remove.create('array1', { _uri: 4 });
                ChangeActions.remove.execute(obj, change);
                expect(obj.array1, 'to equal', [{
                    _uri: 1
                }, {
                    _uri: 2
                }, {
                    _uri: 3
                }]);
            });
        });
        describe('create', function() {
            it('can create remove array item change', function() {
                var change = ChangeActions.remove.create('array1', 5);
                expect(change.type, 'to equal', 'remove');
                expect(change.property, 'to equal', 'array1');
                expect(change.object, 'to equal', 5);
            });
        });
    });
});