🎉 Add test case for DatePicker.

Author: prateekshourya29

__tests__/components/DatePicker/DatePicker.spec.tsx

@@ -0,0 +1,185 @@
+import React from 'react';
+import { DatePicker } from '../../../src';
+
+import '@testing-library/jest-dom';
+import { fireEvent, render, act, screen } from '@testing-library/react';
+
+const CreateDatePicker = (props: { date?: Date; withTimePicker?: Record<string, unknown> }) => {
+  const [date, updateDate] = React.useState<Date>(props.date);
+  return (
+    <DatePicker label="Enter Date" date={date} onChange={(e) => updateDate(e)} timePickerProps={props.withTimePicker} />
+  );
+};
+
+describe('DatePicker', () => {
+  it('Should render a datepicker component', () => {
+    render(<CreateDatePicker />);
+
+    const popoverElement = document.querySelector('.popover-element');
+    expect(popoverElement).toHaveStyle(`
+      display: block;
+    `);
+
+    const datePickerInput = popoverElement.querySelector('.sha-el-input');
+
+    expect(datePickerInput.querySelector('label').innerHTML).toBe('Enter Date ');
+
+    const datePickerbutton = datePickerInput.querySelector('button');
+    expect(datePickerbutton.querySelector('svg').innerHTML).toContain(
+      // Path for MdTimer icon
+      'M368.005 272h-96v96h96v-96zm-32-208v32h-160V64h-48v32h-24.01c-22.002 0-40 17.998-40 40v272c0 22.002 17.998 40 40 40h304.01c22.002 0 40-17.998 40-40V136c0-22.002-17.998-40-40-40h-24V64h-48zm72 344h-304.01V196h304.01v212z',
+    );
+  });
+
+  it('Should open a datepicker', () => {
+    render(<CreateDatePicker />);
+
+    let datePickerCalendar = document.querySelector('.sha-el-calendar');
+    expect(datePickerCalendar).toBeNull();
+
+    act(() => {
+      fireEvent.click(document.querySelector('input'));
+    });
+
+    datePickerCalendar = document.querySelector('.sha-el-calendar');
+    expect(datePickerCalendar).toBeDefined();
+    const timePicker = document.querySelector('.rc-tooltip').querySelectorAll('.popover-element')[2];
+    expect(timePicker).not.toBeDefined();
+  });
+
+  it('Should render a datepicker with today date', () => {
+    render(<CreateDatePicker date={new Date()} />);
+
+    const datePickerInput = document.querySelector('input');
+    expect(datePickerInput.value).toBe(new Date().toLocaleDateString());
+  });
+
+  it('Should re-render on date change', () => {
+    render(<CreateDatePicker />);
+
+    act(() => {
+      fireEvent.click(document.querySelector('input'));
+    });
+
+    let datePickerCalendar = document.querySelector('.sha-el-calendar');
+
+    const monthButton = datePickerCalendar.querySelectorAll('.sha-el-col')[0].querySelector('button');
+    act(() => {
+      fireEvent.click(monthButton);
+    });
+    const monthArray = document.querySelectorAll('.rc-tooltip')[1].querySelectorAll('li');
+    act(() => {
+      fireEvent.click(monthArray[6]);
+    });
+
+    const yearButton = datePickerCalendar.querySelectorAll('.sha-el-col')[1].querySelector('button');
+    act(() => {
+      fireEvent.click(yearButton);
+    });
+    const yearArray = document.querySelectorAll('.rc-tooltip')[2].querySelectorAll('li');
+    act(() => {
+      fireEvent.click(yearArray[2007 - 1980]);
+    });
+
+    const dateArray = datePickerCalendar.querySelectorAll('.sha-el-row')[2].querySelectorAll('.sha-el-col');
+    act(() => {
+      fireEvent.click(dateArray[6].querySelector('button'));
+    });
+
+    datePickerCalendar = document.querySelector('.sha-el-calendar');
+    expect(datePickerCalendar).toBeNull();
+
+    const datePickerInput = document.querySelector('input');
+    expect(datePickerInput.value).toBe('7/7/2007');
+  });
+
+  it('Should render a datepicker with timepicker', () => {
+    render(<CreateDatePicker withTimePicker={{}} />);
+
+    act(() => {
+      fireEvent.click(document.querySelector('input'));
+    });
+
+    const timePicker = document.querySelector('.rc-tooltip').querySelectorAll('.popover-element')[2];
+    expect(timePicker).toBeDefined();
+  });
+
+  it('Should render datepicker with today date and time', () => {
+    let currentDateTime: string;
+    act(() => {
+      render(<CreateDatePicker withTimePicker={{}} date={new Date()} />);
+      currentDateTime = new Date().toLocaleString();
+    });
+
+    const datePickerInput = document.querySelector('input');
+    expect(datePickerInput.value).toBe(currentDateTime);
+  });
+
+  it('Should close datepicker', () => {
+    render(<CreateDatePicker withTimePicker={{}} />);
+
+    expect(document.querySelectorAll('.rc-tooltip').length).toBe(0);
+
+    act(() => {
+      fireEvent.click(document.querySelector('input'));
+    });
+    expect(document.querySelectorAll('.rc-tooltip').length).toBe(1);
+
+    act(() => {
+      fireEvent.click(screen.getByText('Close').parentElement);
+    });
+    expect(document.querySelectorAll('.rc-tooltip').length).toBe(0);
+  });
+
+  it('Should not close datepicker with time picker when clicked on a date', () => {
+    render(<CreateDatePicker withTimePicker={{}} date={new Date(2007, 6, 7)} />);
+
+    act(() => {
+      fireEvent.click(document.querySelector('input'));
+    });
+
+    let datePickerCalendar = document.querySelector('.sha-el-calendar');
+
+    const dateArray = datePickerCalendar.querySelectorAll('.sha-el-row')[2].querySelectorAll('.sha-el-col');
+    act(() => {
+      fireEvent.click(dateArray[0].querySelector('button'));
+    });
+
+    datePickerCalendar = document.querySelector('.sha-el-calendar');
+    expect(datePickerCalendar).toBeDefined();
+  });
+
+  it('Should re-render on time change', () => {
+    render(<CreateDatePicker withTimePicker={{}} date={new Date(2021, 6, 7)} />);
+
+    act(() => {
+      fireEvent.click(document.querySelector('input'));
+    });
+
+    const timePicker = document.querySelector('.rc-tooltip').querySelectorAll('.popover-element')[2];
+    act(() => {
+      fireEvent.click(timePicker.querySelector('input'));
+    });
+    const timePickerContainer = document.querySelectorAll('.rc-tooltip')[1].querySelector('.sha-el-row').parentElement;
+
+    const hours = timePickerContainer.querySelector('.hour-column').querySelectorAll('p');
+    act(() => {
+      fireEvent.click(hours[22]);
+    });
+
+    const minutes = timePickerContainer.querySelector('.min-column').querySelectorAll('p');
+    act(() => {
+      fireEvent.click(minutes[45]);
+    });
+
+    const seconds = timePickerContainer.querySelector('.sec-column').querySelectorAll('p');
+    act(() => {
+      fireEvent.click(seconds[49]);
+    });
+
+    act(() => {
+      fireEvent.click(screen.getByText('Close').parentElement);
+    });
+    expect(document.querySelector('input').value).toBe('7/7/2021, 10:45:49 PM');
+  });
+});