PHP Quality Control & Assurance 4

Question 1

Which tool generates human-readable HTML code coverage reports from PHPUnit's coverage data?

Accepted Answer

phpunit --coverage-html

Answer

Running PHPUnit with --coverage-html <dir> generates an HTML report showing line-by-line coverage.

Question 2

In a PHP CI/CD pipeline, what is the primary role of a linter like PHP-CS-Fixer?

Accepted Answer

Enforce consistent code style across the codebase

Answer

PHP-CS-Fixer checks and automatically corrects code formatting to match a configured coding standard.

Question 3

What PHPUnit feature allows setUp() and tearDown() to run once per test class rather than per test method?

Accepted Answer

setUpBeforeClass() and tearDownAfterClass()

Answer

setUpBeforeClass() and tearDownAfterClass() are static methods that run once per class, unlike setUp()/tearDown() which run per test.

Question 4

What is a 'flaky test' in PHP QA terminology?

Accepted Answer

A test that passes and fails non-deterministically

Answer

A flaky test produces inconsistent results across runs due to timing, environment, or shared state issues.

Question 5

Which PHP extension must be enabled to collect code coverage data in PHPUnit?

Accepted Answer

xdebug or pcov

Answer

PHPUnit requires either Xdebug or pcov to instrument PHP code and collect line/branch coverage information.

PHP - PHP Programming Language Practice Test