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feat: Added speed unit conversion functionality #1450
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,65 @@ | ||
| /** | ||
| * Speed conversion | ||
| * | ||
| * This function converts speed units including kilometers per hour (km/h), | ||
| * meters per second (m/s), miles per hour (mph), and knots (knot). | ||
| * | ||
| * https://en.wikipedia.org/wiki/Kilometres_per_hour | ||
| * https://en.wikipedia.org/wiki/Miles_per_hour | ||
| * https://en.wikipedia.org/wiki/Metre_per_second | ||
| * https://en.wikipedia.org/wiki/Knot_(unit) | ||
| * | ||
| * chart for unit conversions. | ||
| * | ||
| * @constant {Object} speedChart | ||
| * @property {number} speedChart['km/h'] - Conversion factor for kilometers per hour (km/h). | ||
| * @property {number} speedChart['m/s'] - Conversion factor for meters per second (m/s). | ||
| * @property {number} speedChart['mph'] - Conversion factor for miles per hour (mph). | ||
| * @property {number} speedChart['knot'] - Conversion factor for knots (knot). | ||
| */ | ||
| const speedChart = { | ||
| 'km/h': 1.0, | ||
| 'm/s': 3.6, | ||
| mph: 1.609344, | ||
| knot: 1.852 | ||
| } | ||
|
|
||
| /** | ||
| * Inverse speed conversion chart for unit conversions. | ||
| * | ||
| * @constant {Object} speedChartInverse | ||
| * @property {number} speedChartInverse['km/h'] - Inverse conversion factor for kilometers per hour (km/h). | ||
| * @property {number} speedChartInverse['m/s'] - Inverse conversion factor for meters per second (m/s). | ||
| * @property {number} speedChartInverse['mph'] - Inverse conversion factor for miles per hour (mph). | ||
| * @property {number} speedChartInverse['knot'] - Inverse conversion factor for knots (knot). | ||
| */ | ||
| const speedChartInverse = { | ||
| 'km/h': 1.0, | ||
| 'm/s': 0.277777778, | ||
| mph: 0.621371192, | ||
| knot: 0.539956803 | ||
| } | ||
|
|
||
| /** | ||
| * Convert speed from one unit to another using the speedChart and speedChartInverse. | ||
| * | ||
| * @param {number} speed - The speed value to be converted. | ||
| * @param {string} inputUnit - The source unit (e.g., 'km/h', 'm/s', 'mph', 'knot'). | ||
| * @param {string} outputUnit - The target unit (e.g., 'km/h', 'm/s', 'mph', 'knot'). | ||
| * @throws {Error} Throws an error if the source or target unit is not recognized. | ||
| * @returns {number} The converted speed value. | ||
| */ | ||
| const convertSpeed = (speed, inputUnit, outputUnit) => { | ||
| if (!(outputUnit in speedChart) || !(inputUnit in speedChartInverse)) { | ||
| const validUnits = Object.keys(speedChartInverse).join(', ') | ||
| throw new Error( | ||
| `Incorrect 'inputUnit' or 'outputUnit' value: ${inputUnit}, ${outputUnit}\n Valid values are: ${validUnits}` | ||
| ) | ||
| } | ||
|
|
||
| return parseFloat( | ||
| (speed * speedChart[inputUnit] * speedChartInverse[outputUnit]).toFixed(3) | ||
| ) | ||
| } | ||
|
|
||
| export { convertSpeed } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,51 @@ | ||
| import { convertSpeed } from '../SpeedConversion' | ||
|
|
||
| describe('Speed Unit Conversions', () => { | ||
| it('100 km/h to m/s', () => { | ||
| expect(convertSpeed(100, 'km/h', 'm/s')).toBe(27.778, 3) | ||
| }) | ||
|
|
||
| it('100 km/h to mph', () => { | ||
| expect(convertSpeed(100, 'km/h', 'mph')).toBe(62.137, 3) | ||
| }) | ||
|
|
||
| it('100 km/h to knot', () => { | ||
| expect(convertSpeed(100, 'km/h', 'knot')).toBe(53.996, 3) | ||
| }) | ||
|
|
||
| it('100 m/s to km/h', () => { | ||
| expect(convertSpeed(100, 'm/s', 'km/h')).toBe(360.0, 3) | ||
| }) | ||
|
|
||
| it('100 m/s to mph', () => { | ||
| expect(convertSpeed(100, 'm/s', 'mph')).toBe(223.694, 3) | ||
| }) | ||
|
|
||
| it('100 m/s to knot', () => { | ||
| expect(convertSpeed(100, 'm/s', 'knot')).toBe(194.384, 3) | ||
| }) | ||
|
|
||
| it('100 mph to km/h', () => { | ||
| expect(convertSpeed(100, 'mph', 'km/h')).toBe(160.934, 3) | ||
| }) | ||
|
|
||
| it('100 mph to m/s', () => { | ||
| expect(convertSpeed(100, 'mph', 'm/s')).toBe(44.704, 3) | ||
| }) | ||
|
|
||
| it('100 mph to knot', () => { | ||
| expect(convertSpeed(100, 'mph', 'knot')).toBe(86.898, 3) | ||
| }) | ||
|
|
||
| it('100 knot to km/h', () => { | ||
| expect(convertSpeed(100, 'knot', 'km/h')).toBe(185.2, 3) | ||
| }) | ||
|
|
||
| it('100 knot to m/s', () => { | ||
| expect(convertSpeed(100, 'knot', 'm/s')).toBe(51.444, 3) | ||
| }) | ||
|
|
||
| it('100 knot to mph', () => { | ||
| expect(convertSpeed(100, 'knot', 'mph')).toBe(115.078, 3) | ||
| }) | ||
| }) |
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