Arrays 2d

code-challenges/challenges-11.test.js

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+'use strict';
+
+/* ------------------------------------------------------------------------------------------------
+CHALLENGE 1 - Review
+
+Write a function that iterates over an array of people objects 
+and creates a new list of each person's full name using the array method 'map'.
+Each object will have the shape {firstName:string, lastName:string}
+E.g. [ { firstName:"Jane", lastName:"Doe" }, { firstName:"James", lastName:"Bond"}]
+should convert to ["Jane Doe", "James Bond"]
+Note the space in between first and last names.
+You can assume that neither firstName nor lastName will be blank
+------------------------------------------------------------------------------------------------ */
+const toLastNames = people => {
+  // Solution code here...
+  let peopleList = []
+  people.map(name => {
+    peopleList.push(`${name.firstName} ${name.lastName}`)
+  })
+  return peopleList;
+};
+
+/* ------------------------------------------------------------------------------------------------
+CHALLENGE 2
+
+Write a function named validatePin that uses a regular expression pattern to validate a PIN.
+
+If the PIN is four numerical digits long, return true. Otherwise, return false.
+------------------------------------------------------------------------------------------------ */
+
+const validatePin = (pin) => {
+  // Solution code here...
+  let regex = /\b\d{4}\b/gm;
+  return regex.test(pin);
+};
+
+/* ------------------------------------------------------------------------------------------------
+CHALLENGE 3
+
+Write a function named validateEmail that takes in an email address and validates it based
+on several rules:
+  - one word, or two words separated by a period, before the @ symbol
+  - can contain numbers
+  - can have any of the following top-level domains: .net, .com, or .org
+  - no other special characters
+  - no subdomains, ports, etc: must be of the form name@place.com, not name@sub.place.com:3000
+
+Return either true or false.
+
+Note: if you ever need to validate an email using a regex in practice, the Internet has the actual regex you should use. It's many many lines long.
+------------------------------------------------------------------------------------------------ */
+
+const validateEmail = (email) => {
+  // Solution code here...
+  let regex = /^\w+(.\w+)?@\w+[.](com|org|net|edu)\b/gi
+  return regex.test(email);
+};
+
+/* ------------------------------------------------------------------------------------------------
+CHALLENGE 4
+
+Write a function named validatePhoneNumber that accepts a phone number and determines if it is valid.
+
+Acceptable formats include:
+ - (555) 555-5555
+ - (555)555 5555
+ - 555 555-5555
+ - 555-5555555
+ - 555-555 5555
+ - 555-555-5555
+ - 555 555 5555
+ - 555555-5555
+ - 5555555555
+
+Your function should include a single regular expression pattern that matches any of these formats.
+
+Return either true or false.
+------------------------------------------------------------------------------------------------ */
+
+const validatePhoneNumber = (phoneNumber) => {
+  // Solution code here...
+  let regex = /^(\(\d{3}\)|\d{3})(\s|-)?(\d{3})(\s|-)?(\d{4})$/gm
+  return regex.test(phoneNumber)
+};
+
+/* ------------------------------------------------------------------------------------------------
+CHALLENGE 5 - Stretch Goal
+
+Write a function named findTagNames that iterates over an array of HTML strings and uses a regular expression pattern to return the closing tags.
+
+For example, findTagNames(['<h1>Hello, world!</h1>', '<p>Welcome to my site</p>']) returns ['/h1', '/p'].
+findTagNames(['<div><h1>Hello, world!</h1></div>', '<p>Welcome to my site</p>']) returns ['/h1', '/div', '/p'].
+------------------------------------------------------------------------------------------------ */
+
+const findTagNames = elements => {
+  // Solution code here...
+};
+
+/* ------------------------------------------------------------------------------------------------
+TESTS
+
+All the code below will verify that your functions are working to solve the challenges.
+
+DO NOT CHANGE any of the below code.
+
+Run your tests from the console: jest solutions-11.test.js
+------------------------------------------------------------------------------------------------ */
+
+describe('Testing challenge 1', () => {
+  test('It should convert object to full name string', () => {
+
+    const people = [{ firstName: "Jane", lastName: "Doe" }, { firstName: "James", lastName: "Bond" }];
+
+    expect(toLastNames(people)).toStrictEqual(["Jane Doe", "James Bond"]);
+
+  });
+});
+
+describe('Testing challenge 2', () => {
+  test('It should validate a PIN of exactly four digits', () => {
+    expect(validatePin(1234)).toBeTruthy();
+    expect(validatePin(123)).toBeFalsy();
+    expect(validatePin(12345)).toBeFalsy();
+    expect(validatePin('abcd')).toBeFalsy();
+    expect(validatePin('7890')).toBeTruthy();
+    expect(validatePin('0789')).toBeTruthy();
+    expect(validatePin(789)).toBeFalsy();
+    expect(validatePin('0000')).toBeTruthy();
+  });
+});
+
+describe('Testing challenge 3', () => {
+  test('It should match a basic email', () => {
+    expect(validateEmail('joe@codefellows.com')).toBeTruthy();
+  });
+
+  test('It should match if the email contains a period', () => {
+    expect(validateEmail('joe.schmoe@codefellows.net')).toBeTruthy();
+  });
+
+  test('It should match if the email contains other top-level domains', () => {
+    expect(validateEmail('joe@codefellows.org')).toBeTruthy();
+  });
+
+  test('It should match if the email contains a period and other top-level domains', () => {
+    expect(validateEmail('joe.schmoe@codefellows.net')).toBeTruthy();
+  });
+
+  test('It should fail things that aren\'t email addresses', () => {
+    expect(validateEmail('justastring')).toBeFalsy();
+    expect(validateEmail('missing@adomain')).toBeFalsy();
+    expect(validateEmail('@noname.com')).toBeFalsy();
+    expect(validateEmail('.@noname.com')).toBeFalsy();
+    expect(validateEmail('nolastname.@sadness.net')).toBeFalsy();
+    expect(validateEmail('canadaisnotreal@canada.ca')).toBeFalsy();
+    expect(validateEmail('missing.atsymbol.net')).toBeFalsy();
+    expect(validateEmail('looksgood@sofar.comohnowaitthisisbad')).toBeFalsy();
+    expect(validateEmail('no.middle.names@foryou.com')).toBeFalsy();
+  });
+});
+
+describe('Testing challenge 4', () => {
+  test('It should match the acceptable phone number formats', () => {
+    expect(validatePhoneNumber('(555) 555-5555')).toBeTruthy();
+    expect(validatePhoneNumber('555 555-5555')).toBeTruthy();
+    expect(validatePhoneNumber('555-555-5555')).toBeTruthy();
+    expect(validatePhoneNumber('555 5555555')).toBeTruthy();
+    expect(validatePhoneNumber('5555555555')).toBeTruthy();
+    expect(validatePhoneNumber('234 567 8910')).toBeTruthy();
+  });
+  test('It should not match unacceptable phone number formats', () => {
+    expect(validatePhoneNumber('abcdefghij')).toBeFalsy();
+    expect(validatePhoneNumber('222 222 2222 ext. 2222')).toBeFalsy();
+    expect(validatePhoneNumber('(222 222-2222')).toBeFalsy();
+    expect(validatePhoneNumber('222 222-2222-')).toBeFalsy();
+    expect(validatePhoneNumber('(222 222- 2222')).toBeFalsy();
+    expect(validatePhoneNumber('(222 222 -2222')).toBeFalsy();
+    expect(validatePhoneNumber('523 555--5555')).toBeFalsy();
+    expect(validatePhoneNumber('55555555555')).toBeFalsy();
+    expect(validatePhoneNumber('55555555555')).toBeFalsy();
+    expect(validatePhoneNumber('55555555555')).toBeFalsy();
+    expect(validatePhoneNumber('55_55_5555')).toBeFalsy();
+  });
+});
+
+xdescribe('Testing challenge 5', () => {
+  test('It should return the closing tags', () => {
+    expect(findTagNames(['<h1>Hello, world!</h1>', '<p>Welcome to my site</p>'])).toStrictEqual(['/h1', '/p']);
+  });
+  test('It should work if there are multiple closing tags in a single string', () => {
+    expect(findTagNames(['<div><h1>Hello, world!</h1></div>', '<p>Welcome to my site</p>'])).toStrictEqual(['/h1', '/div', '/p']);
+  });
+});