ABPCMS.Web/lib/chart.js/test/specs/core.helpers.tests.js

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describe('Core helper tests', function() {

	var helpers;

	beforeAll(function() {
		helpers = window.Chart.helpers;
	});

	it('should iterate over an array and pass the extra data to that function', function() {
		var testData = [0, 9, 'abc'];
		var scope = {}; // fake out the scope and ensure that 'this' is the correct thing

		helpers.each(testData, function(item, index) {
			expect(item).not.toBe(undefined);
			expect(index).not.toBe(undefined);

			expect(testData[index]).toBe(item);
			expect(this).toBe(scope);
		}, scope);

		// Reverse iteration
		var iterated = [];
		helpers.each(testData, function(item, index) {
			expect(item).not.toBe(undefined);
			expect(index).not.toBe(undefined);

			expect(testData[index]).toBe(item);
			expect(this).toBe(scope);

			iterated.push(item);
		}, scope, true);

		expect(iterated.slice().reverse()).toEqual(testData);
	});

	it('should iterate over properties in an object', function() {
		var testData = {
			myProp1: 'abc',
			myProp2: 276,
			myProp3: ['a', 'b']
		};

		helpers.each(testData, function(value, key) {
			if (key === 'myProp1') {
				expect(value).toBe('abc');
			} else if (key === 'myProp2') {
				expect(value).toBe(276);
			} else if (key === 'myProp3') {
				expect(value).toEqual(['a', 'b']);
			} else {
				expect(false).toBe(true);
			}
		});
	});

	it('should not error when iterating over a null object', function() {
		expect(function() {
			helpers.each(undefined);
		}).not.toThrow();
	});