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iterator.spec.js
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iterator.spec.js
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describe('iterator', function() {
beforeEach(module('material.core'));
describe('use to provide accessor API ', function () {
var list, iter;
beforeEach(inject(function ($mdUtil) {
list = [13, 14, 'Marcy', 15, 'Andrew', 16, 21, 'Adam', 37, 'Max', 99];
iter = $mdUtil.iterator(list);
}));
it('should construct properly', inject(function($mdUtil) {
expect(iter.count()).toEqual(11);
var iter2 = $mdUtil.iterator();
expect(iter2.count()).toEqual(0);
}));
it('should publish read-only access to the dataset', function () {
var ds = iter.items();
ds[0] = 'Thomas';
expect(list[0]).toEqual(13);
});
it('should provide indexOf() accessor', function () {
expect(iter.indexOf(13)).toBe(0);
expect(iter.indexOf(99)).toBe(10);
expect(iter.indexOf(15)).toBe(3);
expect(iter.indexOf(10)).toBe(-1);
expect(iter.indexOf('Max')).toBe(9);
expect(iter.indexOf('max')).toBe(-1);
expect(iter.indexOf('Marcy')).toBe(2);
});
it('should provide inRange() accessor', function () {
expect(iter.inRange(-1)).toBe(false);
expect(iter.inRange(10)).toBe(true);
expect(iter.inRange(11)).toBe(false);
expect(iter.inRange(13)).toBe(false);
});
it('should provide contains()', function () {
expect(iter.contains(16)).toBeTruthy();
expect(iter.contains(98)).toBeFalsy();
expect(iter.contains('Max')).toBe(true);
expect(iter.contains('max')).toBe(false);
expect(iter.itemAt(0)).toBe(13);
expect(iter.itemAt(10)).toBe(99);
expect(iter.itemAt(7)).toBe('Adam');
expect(iter.itemAt(2)).toBe('Marcy');
});
it('should provide itemAt()', function () {
expect(iter.itemAt(0)).toBe(13);
expect(iter.itemAt(10)).toBe(99);
expect(iter.itemAt(7)).toBe('Adam');
expect(iter.itemAt(2)).toBe('Marcy');
// Out of range
expect(iter.itemAt(12)).toBeNull();
expect(iter.itemAt(-1)).toBeNull();
expect(iter.itemAt(27)).toBeNull();
});
});
describe('use to provide mutator API ', function () {
var list, iter;
beforeEach(inject(function ($mdUtil) {
list = [13, 14, 'Marcy', 15, 'Andrew', 16, 21, 'Adam', 37, 'Max', 99];
iter = $mdUtil.iterator(list);
}));
it('should use add() to append or insert items properly', function () {
iter.add("47");
// Original list remains the data provider
expect(iter.count()).toEqual(12);
expect(list.length).toEqual(12);
iter.add({firstName: 'Thomas', lastName: 'Burleson'});
expect(iter.itemAt(12).lastName).toBe('Burleson');
iter.add('Thomas', 1);
expect(iter.count()).toEqual(14);
expect(iter.itemAt(1)).toEqual('Thomas');
iter.add(null);
expect(iter.count()).toEqual(14);
iter.add();
expect(iter.count()).toEqual(14);
});
it('should remove() items properly', function () {
// Remove 1st item
iter.remove(13);
expect(iter.count()).toEqual(10);
expect(iter.itemAt(0)).toBe(14);
// Remove last item
iter.remove(99);
expect(iter.count()).toEqual(9);
expect(iter.itemAt(8)).toBe('Max');
// Remove interior item
iter.remove('Andrew');
expect(iter.count()).toEqual(8);
expect(iter.itemAt(3)).toBe(16);
iter.remove(null);
expect(iter.itemAt(3)).toBe(16);
});
});
describe('use to provide navigation API ', function () {
var list, iter;
beforeEach(inject(function ($mdUtil) {
list = [13, 14, 'Marcy', 15, 'Andrew', 16, 21, 'Adam', 37, 'Max', 99];
iter = $mdUtil.iterator(list);
}));
it('should use first() properly', function () {
expect(iter.first()).toBe(13);
iter.add("47");
expect(iter.first()).toBe(13);
iter.add('Md', 0);
expect(iter.first()).toBe('Md');
iter.remove('Md');
expect(iter.first()).toBe(13);
iter.remove(iter.first());
expect(iter.first()).toBe(14);
});
it('should last() items properly', inject(function ($mdUtil) {
expect(iter.last()).toBe(99);
iter.add("47");
expect(iter.last()).toBe("47");
iter.add('Md', list.length);
expect(iter.last()).toBe('Md');
iter.remove('Md');
expect(iter.last()).toBe("47");
iter.remove(iter.last());
iter.remove(iter.last());
expect(iter.last()).toBe('Max');
iter.remove(12);
expect(iter.last()).toBe('Max');
expect(iter.first()).toBe(13);
iter = $mdUtil.iterator([2, 5]);
iter.remove(2);
expect(iter.last()).toBe(iter.first());
}));
it('should use hasNext() properly', function () {
expect(iter.hasNext(iter.first())).toBe(true);
expect(iter.hasNext(iter.last())).toBe(false);
expect(iter.hasNext(99)).toBe(false);
expect(iter.hasNext('Andrew')).toBe(true);
iter.add(100);
expect(iter.hasNext(99)).toBe(true);
iter.remove(100);
expect(iter.hasNext(99)).toBe(false);
});
it('should use hasPrevious() properly', inject(function ($mdUtil) {
expect(iter.hasPrevious(iter.first())).toBe(false);
expect(iter.hasPrevious(iter.last())).toBe(true);
expect(iter.hasPrevious(99)).toBe(true);
expect(iter.hasPrevious(13)).toBe(false);
expect(iter.hasPrevious('Andrew')).toBe(true);
iter.add(100);
expect(iter.hasPrevious(99)).toBe(true);
iter.remove(100);
expect(iter.hasPrevious(99)).toBe(true);
iter.remove(13);
expect(iter.hasPrevious(iter.first())).toBe(false);
iter = $mdUtil.iterator(list = [2, 3]);
expect(iter.hasPrevious(iter.last())).toBe(true);
iter.remove(2);
expect(iter.hasPrevious(iter.last())).toBe(false);
expect(iter.hasPrevious(iter.first())).toBe(false);
iter.remove(iter.first());
expect(iter.count()).toBe(0);
expect(iter.hasPrevious(iter.first())).toBe(false);
expect(iter.hasPrevious(null)).toBe(false);
}));
it('should use next() properly', function () {
expect(iter.next(iter.first())).toBe(14);
iter.add("47",0);
expect(iter.next(iter.first())).toBe(13);
var index = list.length - 3;
expect(iter.next(iter.itemAt(index))).toBe('Max');
expect(iter.next(99)).toBeNull();
expect(iter.next(null)).toBeNull();
});
it('should use previous() properly', function () {
expect(iter.previous(iter.last())).toBe('Max');
expect(iter.previous(iter.first())).toBeNull();
iter.add("47",0);
expect(iter.previous(iter.itemAt(1))).toBe("47");
var index = list.length - 3;
expect(iter.previous(iter.itemAt(index))).toBe('Adam');
expect(iter.previous(99)).toBe('Max');
expect(iter.previous(null)).toBeNull();
});
});
describe('use to provide navigation with validation ', function () {
var list, iter;
var validate = function(item) { return (item !== 14) && (item !== 'Andrew'); };
beforeEach(inject(function ($mdUtil) {
list = [13, 14, 'Marcy', 15, 'Andrew', 16, 21, 'Adam', 37, 'Max', 99];
iter = $mdUtil.iterator(list);
}));
it('should use next() properly', function () {
expect(iter.next(13, validate)).toBe('Marcy');
expect(iter.next('Marcy', validate)).toBe(15);
expect(iter.next(15, validate)).toBe(16);
});
it('should use previous() properly', function () {
expect(iter.previous(16, validate)).toBe(15);
expect(iter.previous(15, validate)).toBe('Marcy');
expect(iter.previous('Marcy', validate)).toBe(13);
});
});
describe('use to provide navigation API with relooping', function () {
var list, iter;
beforeEach(inject(function ($mdUtil) {
list = [13, 14, 'Marcy', 15, 'Andrew', 16, 21, 'Adam', 37, 'Max', 99];
iter = $mdUtil.iterator(list, true);
}));
it('should use first() properly', inject(function ($mdUtil) {
expect(iter.first()).toBe(13);
iter.add("47");
expect(iter.first()).toBe(13);
iter.add('Md', 0);
expect(iter.first()).toBe('Md');
iter.remove('Md');
expect(iter.first()).toBe(13);
iter.remove(iter.first());
expect(iter.first()).toBe(14);
iter = $mdUtil.iterator([2, 5]);
iter.remove(5);
expect(iter.first()).toBe(iter.last());
}));
it('should last() items properly', inject(function ($mdUtil) {
expect(iter.last()).toBe(99);
iter.add("47");
expect(iter.last()).toBe("47");
iter.add('Md', list.length);
expect(iter.last()).toBe('Md');
iter.remove('Md');
expect(iter.last()).toBe("47");
iter.remove(iter.last());
iter.remove(iter.last());
expect(iter.last()).toBe('Max');
iter.remove(12);
expect(iter.last()).toBe('Max');
expect(iter.first()).toBe(13);
iter = $mdUtil.iterator([2, 5]);
iter.remove(2);
expect(iter.last()).toBe(iter.first());
}));
it('should use hasNext() properly', inject(function ($mdUtil) {
expect(iter.hasNext(iter.first())).toBe(true);
expect(iter.hasNext(iter.last())).toBe(false);
expect(iter.hasNext(99)).toBe(false);
expect(iter.hasNext('Andrew')).toBe(true);
iter.add(100);
expect(iter.hasNext(99)).toBe(true);
iter.remove(100);
expect(iter.hasNext(99)).toBe(false);
iter = $mdUtil.iterator(list = [2, 3]);
expect(iter.hasNext(iter.first())).toBe(true);
iter.remove(3);
expect(iter.hasNext(iter.first())).toBe(false);
expect(iter.hasNext(iter.last())).toBe(false);
iter.remove(iter.last());
expect(iter.count()).toBe(0);
expect(iter.hasNext(iter.last())).toBe(false);
expect(iter.hasNext(null)).toBe(false);
}));
it('should use hasPrevious() properly', inject(function ($mdUtil) {
expect(iter.hasPrevious(iter.first())).toBe(false);
expect(iter.hasPrevious(iter.last())).toBe(true);
expect(iter.hasPrevious(99)).toBe(true);
expect(iter.hasPrevious(13)).toBe(false);
expect(iter.hasPrevious('Andrew')).toBe(true);
iter.add(100);
expect(iter.hasPrevious(99)).toBe(true);
iter.remove(100);
expect(iter.hasPrevious(99)).toBe(true);
iter.remove(13);
expect(iter.hasPrevious(iter.first())).toBe(false);
iter = $mdUtil.iterator(list = [2, 3]);
expect(iter.hasPrevious(iter.last())).toBe(true);
iter.remove(2);
expect(iter.hasPrevious(iter.last())).toBe(false);
expect(iter.hasPrevious(iter.first())).toBe(false);
iter.remove(iter.first());
expect(iter.count()).toBe(0);
expect(iter.hasPrevious(iter.first())).toBe(false);
expect(iter.hasPrevious(null)).toBe(false);
}));
it('should use next() properly', function () {
expect(iter.next(iter.first())).toBe(14);
iter.add('47',0);
expect(iter.next(iter.first())).toBe(13);
var index = list.length - 3;
expect(iter.next(iter.itemAt(index))).toBe('Max');
expect(iter.next(99)).toBe('47');
expect(iter.next(null)).toBeNull();
});
it('should use previous() properly', function () {
expect(iter.previous(iter.last())).toBe('Max');
iter.add('47',0);
expect(iter.previous(iter.itemAt(1))).toBe("47");
var index = list.length - 3;
expect(iter.previous(iter.itemAt(index))).toBe('Adam');
expect(iter.previous(99)).toBe('Max');
expect(iter.previous('47')).toBe(99);
expect(iter.previous(null)).toBeNull();
});
});
describe('use to provide navigation API with relooping and validation', function () {
var list, iter;
var validate1 = function (item) { return (item !== 14) && (item !== 'Andrew'); };
var validate2 = function () { return false; };
beforeEach(inject(function ($mdUtil) {
list = [13, 14, 'Marcy', 15, 'Andrew', 16, 21, 'Adam', 37, 'Max', 99];
iter = $mdUtil.iterator(list, true);
}));
it('should use next() properly', function () {
expect(iter.next(13, validate1)).toBe('Marcy');
expect(iter.next('Marcy', validate1)).toBe(15);
expect(iter.next(15, validate1)).toBe(16);
expect(iter.next(99, validate1)).toBe(13);
expect(iter.next(iter.first(), validate2)).toBeNull();
expect(iter.next(iter.last(), validate2)).toBeNull();
});
it('should use previous() properly', function () {
expect(iter.previous(16, validate1)).toBe(15);
expect(iter.previous(15, validate1)).toBe('Marcy');
expect(iter.previous('Marcy', validate1)).toBe(13);
expect(iter.previous(13, validate1)).toBe(99);
expect(iter.previous(iter.last(), validate2)).toBeNull();
expect(iter.previous(iter.first(), validate2)).toBeNull();
});
});
describe('use to provide a search API ', function () {
var list, iter;
beforeEach(inject(function ($mdUtil) {
list = [
{ gender:"male", name:'Thomas' },
{ gender:"male", name:'Andrew' },
{ gender:"female", name:'Marcy' },
{ gender:"female", name:'Naomi' },
{ gender:"male", name:'Adam' },
{ gender:"male", name:'Max' }
];
iter = $mdUtil.iterator(list);
}));
it('should use findBy() properly', function () {
// Datasets found
expect(iter.findBy("gender","male").length).toBe(4);
expect(iter.findBy("gender","female").length).toBe(2);
// Existing Record found
expect(iter.findBy("name","Naomi").length).toBe(1);
// Record not found
expect(iter.findBy("gender","Ryan").length).toBe(0);
// Property not found
expect(iter.findBy("age",27).length).toBe(0);
});
});
});