problem 5.test.js

const { normalizeCoord } = require('./solutions');

/**

* * 1. "43.7955,-79.3496" NOTE: no space

* 4. "[-79.3496, 43.7955]" NOTE: the space, as well as lat/lng values are reversed

*/

describe('Problem 5 - normalizeCoord() function', function () {

test('valid lat, lng coord returns proper format', function () {

let coord = '43.7955,-79.3496';

expect(normalizeCoord(coord)).toBe('(43.7955, -79.3496)');

});

describe('lat validation', function () {

test('coord with lat at 90 returns proper format', function () {

let coord = '90,-79.3496';

expect(normalizeCoord(coord)).toBe('(90, -79.3496)');

});

test('coord with lat at -90 returns proper format', function () {

let coord = '-90,-79.3496';

expect(normalizeCoord(coord)).toBe('(-90, -79.3496)');

});

test('coord with invalid lat < -90 throws', function () {

let coord = '-90.01,-79.3496';

expect(() => normalizeCoord(coord)).toThrow();

});

test('coord with invalid lat > 90 throws', function () {

let coord = '90.01,-79.3496';

expect(() => normalizeCoord(coord)).toThrow();

});

});

describe('lng validation', function () {

test('coord with valid lng at 180 returns proper format', function () {

let coord = '43.7955,180';

expect(normalizeCoord(coord)).toBe('(43.7955, 180)');

});

test('coord with valid lng at -180 returns proper format', function () {

let coord = '43.7955,-180';

expect(normalizeCoord(coord)).toBe('(43.7955, -180)');

});

test('coord with invalid lng < -180 throws', function () {

let coord = '43.7955,-180.00001';

expect(() => normalizeCoord(coord)).toThrow();

});

test('coord with invalid lng > 180 throws', function () {

let coord = '43.7955,180.00001';

expect(() => normalizeCoord(coord)).toThrow();

});

});

describe('alternate [lat, lng] format', function () {

test('coord with alternate layout format can be parsed correctly', function () {

let coord = '[-79.3496, 43.7955]';

expect(normalizeCoord(coord)).toBe('(43.7955, -79.3496)');

});

test('coord with alternate layout validates lng correctly', function () {

let coord = '[-181, 43.7955]';

expect(() => normalizeCoord(coord)).toThrow();

});

test('coord with alternate layout validates lat correctly', function () {

let coord = '[-79.3496, 91]';

expect(() => normalizeCoord(coord)).toThrow();

});

});

});

soloution.js

/*******************************************************************************

* Problem 5: parse a geographic coordinate

*

* Coordinates are defined as numeric, decimal values of Longitude and Latitude.

* A example, the Seneca College Newnham campus is located at:

*

* Longitude: -79.3496 (negative number means West)

* Latitude: 43.7955 (positive number means North)

*

* A dataset includes thousands of geographic coordinates, stored as strings.

* However, over the years, different authors have used slightly different formats.

* All of the following are valid and need to be parsed:

*

* 1. "43.7955,-79.3496" NOTE: no space

* 4. "[-79.3496, 43.7955]" NOTE: the space, as well as lat/lng values are reversed

*

* Valid Longitude values are decimal numbers between -180 and 180.

*

* Valid Latitude values are decimal numbers between -90 and 90.

*

* Parse the value and reformat it into the form: "(lat, lng)"

*

* @param {string} value - a geographic coordinate string in one of the given forms

* @returns {string} - a geographic coordinate formatted as "(lat, lng)"

******************************************************************************/

function normalizeCoord(value) {

//write the code here

}