alinaMihai / js-test

VoxSmart JavaScript coding test

Fill in number-parser.js to ensure that the tests in number-parser.test.js succeed.

Each test case calls NumberParser.internationalize(givenNumber, referenceNumber), which must

• return the givenNumber if it's already in international format
• otherwise, internationalize givenNumber, assuming it's been given in the national format of the referenceNumber

In a typical VoxSmart situation, the referenceNumber might be the user's own phone number.

The NumberParser is initialized with a country database: you are given a small sample database in the test code. Each item in the database contains

• a country code
• an international prefix, eg +44 for the UK
• the national prefix, eg 1 for the US; this defaults to 0

The test cases show the required behaviour when valid parameters are given, and also a couple of cases of invalid data which should cause exceptions.

Your answer must be source code for number-parser.js, which can be dropped in as a replacement for the suppied number-parser.js and which will produce a 100% pass with the given test code.