Many beginner and intermediate unit testing examples in any programming language suggest that it is perfectly easy to test your application's logic with simple tests. For database-centric applications this is far away from the reality. Start using Wordpress, TYPO3 or Symfony with Doctrine or Propel, for example, and you will easily experience considerable problems with PHPUnit: just because the database is so tightly coupled to these libraries. Make sure you have the PHP extension pdo and da

PHPUnit can produce several types of logfiles. Test Results (XML) The XML logfile for test results produced by PHPUnit is based upon the one used by the JUnit task for Apache Ant. The following example shows the XML logfile generated for the tests in ArrayTest: <?xml version="1.0" encoding="UTF-8"?> <testsuites> <testsuite name="ArrayTest" file="/home/sb/ArrayTest.php" tests="2" assertions="2" failures="0" er

assertThat() More complex assertions can be formulated using the PHPUnit_Framework_Constraint classes. They can be evaluated using the assertThat() method. Example A.49 shows how the logicalNot() and equalTo() constraints can be used to express the same assertion as assertNotEquals(). assertThat(mixed $value, PHPUnit_Framework_Constraint $constraint[, $message = '']) Reports an error identified by $message if the $value does not match the $constraint. Example A.49: Usage of assertThat() <

@medium The @medium annotation is an alias for @group medium. A medium test must not depend on a test marked as @large. If the PHP_Invoker package is installed and strict mode is enabled, a medium test will fail if it takes longer than 10 seconds to execute. This timeout is configurable via the timeoutForMediumTests attribute in the XML configuration file.

assertFileExists() assertFileExists(string $filename[, string $message = '']) Reports an error identified by $message if the file specified by $filename does not exist. assertFileNotExists() is the inverse of this assertion and takes the same arguments. Example A.23: Usage of assertFileExists() <?php use PHPUnit\Framework\TestCase; class FileExistsTest extends TestCase { public function testFailure() { $this->assertFileExists('/path/to/file'); } } ?> phpunit File

PHPUnit can be extended in various ways to make the writing of tests easier and customize the feedback you get from running tests. Here are common starting points to extend PHPUnit. Subclass PHPUnit\Framework\TestCase Write custom assertions and utility methods in an abstract subclass of PHPUnit\Framework\TestCase and derive your test case classes from that class. This is one of the easiest ways to extend PHPUnit. Write custom assertions When writing custom assertions it is the best pract

In computer science, code coverage is a measure used to describe the degree to which the source code of a program is tested by a particular test suite. A program with high code coverage has been more thoroughly tested and has a lower chance of containing software bugs than a program with low code coverage. --Wikipedia In this chapter you will learn all about PHPUnit's code coverage functionality that provides an insight into what parts of the production code are executed when the t

assertArrayHasKey() assertArrayHasKey(mixed $key, array $array[, string $message = '']) Reports an error identified by $message if $array does not have the $key. assertArrayNotHasKey() is the inverse of this assertion and takes the same arguments. Example A.1: Usage of assertArrayHasKey() <?php use PHPUnit\Framework\TestCase; class ArrayHasKeyTest extends TestCase { public function testFailure() { $this->assertArrayHasKey('foo', ['bar' => 'baz']); } } ?> phpun

assertJsonStringEqualsJsonFile() assertJsonStringEqualsJsonFile(mixed $expectedFile, mixed $actualJson[, string $message = '']) Reports an error identified by $message if the value of $actualJson does not match the value of $expectedFile. Example A.34: Usage of assertJsonStringEqualsJsonFile() <?php use PHPUnit\Framework\TestCase; class JsonStringEqualsJsonFileTest extends TestCase { public function testFailure() { $this->assertJsonStringEqualsJsonFile( 'p

@requires The @requires annotation can be used to skip tests when common preconditions, like the PHP Version or installed extensions, are not met. A complete list of possibilities and examples can be found at Table 7.3