freeCodeCamp/guide/english/certifications/information-security-and-quality-assurance/quality-assurance-and-testing-with-chai/use-regular-expressions-to-test-a-string/index.md

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Use Regular Expressions to Test a String

Use Regular Expressions to Test a String

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Problem Explanation

To begin, locate the file "tests/1_unit_tests.js" and scroll to the suite of tests for 'Strings'.

This file contains multiple suites of tests for the project, and this challenge requires you to make the tests in /** 15 */ pass.

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Hints

Hint 1

The challenge uses function formatPeople() to produce a string, and then compares this to a regex. Look closely at both, and determine whether the regex will match the returned string or not.

Hint 2

Check the error messages to determine if your understanding of the regex match was correct.

Hint 3

The lines in the test should be changed from assert.fail() to either assert.match() or assert.notMatch() based on the regex from the line above.

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Solutions

Solution 1 (Click to Show/Hide)

/** 15 - #match Asserts that th actual value **/
// matches the second argument regular expression.
test('#match, #notMatch', function() {
  var regex = /^#\sname\:\s[\w\s]+,\sage\:\s\d+\s?$/;
  assert.match(formatPeople('John Doe', 35), regex);
  assert.notMatch(formatPeople('Paul Smith III', 'twenty-four'), regex);
});