Add isDigit utility with unit and integration tests #122
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Description
This PR adds a new
isDigitvalidation function to check if a string contains only numeric digits (0-9), along with its corresponding API endpoint.Changes Made
New Function
ValidationFunctions.isDigit(str)- Returnstrueif the input string contains only digits (0-9),falseotherwiseNew API Endpoint
POST /api/isDigit- REST endpoint that acceptsinputStringand returns boolean resultTests
test/unit/isDigit.test.js) - Tests the validation function directlytest/integration/isDigit.test.js) - Tests the API endpointFunction Behavior
truefor: "123", "0", "9876543210"falsefor: "123abc", "12.34", "12 34", "12-34", ""API Usage
Testing
Related Issues
Closes #17 - Add API Call and Function for isDigit