angular-cn/aio/tools/transforms/angular-base-package/rendering/hasValues.spec.js

43 lines
1.7 KiB
JavaScript

const factory = require('./hasValues');
describe('hasValues filter', () => {
let filter;
beforeEach(function() { filter = factory(); });
it('should be called "hasValues"', function() { expect(filter.name).toEqual('hasValues'); });
it('should return true if the specified property path is truthy on any item in the list', function() {
expect(filter.process([{a: 1}], 'a')).toEqual(true);
expect(filter.process([{a: 1, b: 2}], 'a')).toEqual(true);
expect(filter.process([{b: 2}, {a: 1}], 'a')).toEqual(true);
expect(filter.process([{a:{b:1}}], 'a.b')).toEqual(true);
expect(filter.process([{a:{b:1}, b: 2}], 'a.b')).toEqual(true);
expect(filter.process([{b: 2}, {a:{b:1}}], 'a.b')).toEqual(true);
});
it('should return false if the value is not an object', () => {
expect(filter.process([], 'a')).toEqual(false);
expect(filter.process(0, 'a')).toEqual(false);
expect(filter.process([], 'a.b')).toEqual(false);
expect(filter.process(0, 'a.b')).toEqual(false);
});
it('should return false if the property exists but is falsy', () => {
expect(filter.process([{a: false}], 'a')).toEqual(false);
expect(filter.process([{a: ''}], 'a')).toEqual(false);
expect(filter.process([{a: 0}], 'a')).toEqual(false);
expect(filter.process([{a: null}], 'a')).toEqual(false);
expect(filter.process([{a: undefined}], 'a')).toEqual(false);
});
it('should return false if any of the properties in the path do not exist', () => {
expect(filter.process({}, 'a')).toEqual(false);
expect(filter.process({}, 'a.b')).toEqual(false);
expect(filter.process([{b: 2}], 'a')).toEqual(false);
expect(filter.process([{a: 2}], 'a.b')).toEqual(false);
expect(filter.process([{a: {}}], 'a.b.c')).toEqual(false);
});
});