Merge pull request #764 from evyatarmeged/master

[FEATURE] add celsiusToFahrenheit and fahrenheitToCelsius

snippets_archive/celsiusToFahrenheit.md

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+### celsiusToFahrenheit
+
+Celsius to Fahrenheit temperature conversion.
+
+Follows the conversion formula `F =  1.8C + 32`.
+
+```js
+const celsiusToFahrenheit = degrees => 1.8 * degrees + 32;
+```
+
+```js
+celsiusToFahrenheit(33) // 91.4
+```

snippets_archive/fahrenheitToCelsius.md

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+### fahrenheitToCelsius
+
+Fahrenheit to Celsius temperature conversion.
+
+Follows the conversion formula `C = (F - 32) * 5/9`.
+
+```js
+const fahrenheitToCelsius = degrees => (degrees - 32) * 5/9;
+```
+
+```js
+fahrenheitToCelsius(32); // 0
+```

test/celsiusToFahrenheit/celsiusToFahrenheit.js

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+const celsiusToFahrenheit = degrees => 1.8 * degrees + 32;
+module.exports = celsiusToFahrenheit;

test/celsiusToFahrenheit/celsiusToFahrenheit.test.js

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+const expect = require('expect');
+const celsiusToFahrenheit = require('./celsiusToFahrenheit.js');
+
+test('celsiusToFahrenheit is a Function', () => {
+  expect(celsiusToFahrenheit).toBeInstanceOf(Function);
+});
+
+test('0 Celsius is 32 Fahrenheit', () => {
+  expect(celsiusToFahrenheit(0)).toBe(32)
+})
+
+test('100 Celsius is 212 Fahrenheit', () => {
+	expect(celsiusToFahrenheit(100)).toBe(212)
+})
+
+test('-50 Celsius is -58 Fahrenheit', () => {
+	expect(celsiusToFahrenheit(-50)).toBe(-58)
+})
+
+test('1000 Celsius is 1832 Fahrenheit', () => {
+	expect(celsiusToFahrenheit(1000)).toBe(1832)
+})
+
+test('Not a number value is NaN', () => {
+	expect(celsiusToFahrenheit("Durr")).toBe(NaN)
+})

test/fahrenheitToCelsius/fahrenheitToCelsius.js

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+const fahrenheitToCelsius = degrees => (degrees - 32) * 5/9;
+module.exports = fahrenheitToCelsius;

test/fahrenheitToCelsius/fahrenheitToCelsius.test.js

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+const expect = require('expect');
+const fahrenheitToCelsius = require('./fahrenheitToCelsius.js');
+
+test('fahrenheitToCelsius is a Function', () => {
+  expect(fahrenheitToCelsius).toBeInstanceOf(Function);
+});
+
+test('32 Fahrenheit is 0 Celsius', () => {
+	expect(fahrenheitToCelsius(32)).toBe(0)
+})
+
+test('212 Fahrenheit is 100 Celsius', () => {
+	expect(fahrenheitToCelsius(212)).toBe(100)
+})
+
+test('150 Fahrenheit is 65.55555555555556 Celsius', () => {
+	expect(fahrenheitToCelsius(150)).toBe(65.55555555555556)
+})
+
+test('1000 Fahrenheit is 537.7777777777778', () => {
+	expect(fahrenheitToCelsius(1000)).toBe(537.7777777777778)
+})
+
+test('Not a number value is NaN', () => {
+	expect(fahrenheitToCelsius("Durr")).toBe(NaN)
+})