/
clock.js
62 lines (54 loc) · 1.99 KB
/
clock.js
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var SdkClock = require('../../lib/clock');
describe('clock', function() {
describe('create', function() {
it('returns an instance of SdkClock', function() {
expect(SdkClock.create() instanceof SdkClock).toBe(true);
});
});
describe('SdkClock', function() {
describe('now', function() {
it('returns the local time / 1000', function() {
var fakeDate = 4200;
jest.spyOn(Date, 'now').mockReturnValue(fakeDate);
var offset = 0;
var clock = new SdkClock(offset);
expect(clock.now()).toBe(fakeDate / 1000);
});
it('can have a positive offset', function() {
var fakeDate = 4200;
jest.spyOn(Date, 'now').mockReturnValue(fakeDate);
var offset = 2300;
var clock = new SdkClock(offset);
expect(clock.now()).toBe((fakeDate + offset) / 1000);
});
it('can have a negative offset', function() {
var fakeDate = 4200;
jest.spyOn(Date, 'now').mockReturnValue(fakeDate);
var offset = -2300;
var clock = new SdkClock(offset);
expect(clock.now()).toBe((fakeDate + offset) / 1000);
});
it('returns a valid number even if offset is a string', function() {
var fakeDate = 4200;
jest.spyOn(Date, 'now').mockReturnValue(fakeDate);
var offset = "0";
var clock = new SdkClock(offset);
expect(clock.now()).toBe(fakeDate / 1000);
});
it('returns a valid number even if offset is not set', function() {
var fakeDate = 4200;
jest.spyOn(Date, 'now').mockReturnValue(fakeDate);
var offset = null;
var clock = new SdkClock(offset);
expect(clock.now()).toBe(fakeDate / 1000);
});
it('will be NaN if offset is NaN', function() {
var fakeDate = 4200;
jest.spyOn(Date, 'now').mockReturnValue(fakeDate);
var offset = "definitelyNotanumber";
var clock = new SdkClock(offset);
expect(clock.now()).toBe(Number.NaN);
});
});
});
})