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Commit 0924f1c

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merge: Improved abs function (#923)
* feat: added validation, test codes * chore: remove useless words
1 parent 80cea08 commit 0924f1c

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2 files changed

+41
-20
lines changed

2 files changed

+41
-20
lines changed

‎Maths/Abs.js

Lines changed: 15 additions & 15 deletions
Original file line numberDiff line numberDiff line change
@@ -1,22 +1,22 @@
11
/**
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* @function absVal
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* @function abs
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* @description This script will find the absolute value of a number.
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* @param {Integer} num - The input integer
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* @return {Integer} - Absolute number of num.
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* @see [Absolute_value](https://en.wikipedia.org/wiki/Absolute_value)
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* @example absVal(-10) = 10
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* @example absVal(50) = 50
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* @example absVal(0) = 0
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* @param {number} num - The input integer
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* @return {number} - Absolute number of num.
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* @see https://en.wikipedia.org/wiki/Absolute_value
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* @example abs(-10) = 10
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* @example abs(50) = 50
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* @example abs(0) = 0
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*/
1111

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const absVal = (num) => {
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// Find absolute value of `num`.
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'use strict'
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if (num<0) {
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return-num
12+
const abs = (num) => {
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constvalidNumber=+num// converted to number, also can use - Number(num)
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15+
if (Number.isNaN(validNumber)) {
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thrownewTypeError('Argument is NaN - Not a Number')
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}
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// Executes if condition is not met.
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return num
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return validNumber<0 ? -validNumber : validNumber// if number is less then zero mean negative then it converted to positive. i.e -> n = -2 = -(-2) = 2
2020
}
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22-
export { absVal }
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export { abs }

‎Maths/test/Abs.test.js

Lines changed: 26 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -1,18 +1,39 @@
1-
import { absVal } from '../Abs'
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import { abs } from '../Abs'
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describe('Testing abs function', () => {
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it('Testing for invalid types', () => {
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expect(() => abs('234a')).toThrow()
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expect(() => abs({})).toThrow()
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expect(() => abs([12, -32, -60])).toThrow()
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})
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10+
it('Testing for number of string type', () => {
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expect(abs('-345')).toBe(345)
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expect(abs('-345.455645')).toBe(345.455645)
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})
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it('Testing for a boolean type', () => {
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expect(abs(true)).toBe(1)
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expect(abs(false)).toBe(0)
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})
219

3-
describe('absVal', () => {
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it('should return an absolute value of a negative number', () => {
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const absOfNegativeNumber = absVal(-34)
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const absOfNegativeNumber = abs(-34)
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expect(absOfNegativeNumber).toBe(34)
723
})
824

925
it('should return an absolute value of a positive number', () => {
10-
const absOfPositiveNumber = absVal(50)
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const absOfPositiveNumber = abs(50)
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expect(absOfPositiveNumber).toBe(50)
1228
})
1329

1430
it('should return an absolute value of a zero number', () => {
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const absOfPositiveNumber = absVal(0)
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const absOfPositiveNumber = abs(0)
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expect(absOfPositiveNumber).toBe(0)
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})
34+
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it('should return an absolute value of any floating number', () => {
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const absOfPositiveNumber = abs(-20.2034)
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expect(absOfPositiveNumber).toBe(20.2034)
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})
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})

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