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Add unit tests to datepickerformatter
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src/web/app/components/datepicker/datepicker-formatter.spec.ts
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import { NgbDateStruct } from '@ng-bootstrap/ng-bootstrap'; | ||
import { DatePickerFormatter } from './datepicker-formatter'; | ||
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describe('DatepickerFormatter', () => { | ||
let formatter : DatePickerFormatter; | ||
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beforeEach(() => { | ||
formatter = new DatePickerFormatter(); | ||
}); | ||
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it('should create an instance', () => { | ||
expect(formatter).toBeTruthy(); | ||
}); | ||
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it('should return an empty string if date is null', () => { | ||
// I used any as the type here as it is the only way to pass in null since | ||
// null is not compatible with NgbDateStruct | ||
const date: any = null; | ||
const formattedDate: String = formatter.format(date); | ||
expect(formattedDate).toEqual(''); | ||
}); | ||
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it('should return a properly formatted date string', () => { | ||
const date: NgbDateStruct = { year: 2023, month: 12, day: 12 }; | ||
const formattedDate = formatter.format(date); | ||
expect(formattedDate).toEqual('Tue, 12 Dec, 2023'); | ||
}); | ||
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it('should parse the valid date string correctly', () => { | ||
const date : string = 'Tue, 12 Dec, 2023'; | ||
const parsedDate : NgbDateStruct = formatter.parse(date); | ||
expect(parsedDate.day).toEqual(12); | ||
expect(parsedDate.month).toEqual(12); | ||
expect(parsedDate.year).toEqual(2023); | ||
}); | ||
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it('should return NaN for all the fields if invalid date string format is parsed', () => { | ||
const date : string = '12th December 2023'; | ||
const parsedDate : NgbDateStruct = formatter.parse(date); | ||
expect(parsedDate.day).toEqual(NaN); | ||
expect(parsedDate.month).toEqual(NaN); | ||
expect(parsedDate.year).toEqual(NaN); | ||
}); | ||
}); |