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<?php
/**
* Base include file for SimpleTest
* @package SimpleTest
* @subpackage UnitTester
* @version $Id$
*/
/**#@+
* Includes SimpleTest files and defined the root constant
* for dependent libraries.
*/
require_once(dirname(__FILE__) . '/invoker.php');
require_once(dirname(__FILE__) . '/errors.php');
require_once(dirname(__FILE__) . '/compatibility.php');
require_once(dirname(__FILE__) . '/scorer.php');
require_once(dirname(__FILE__) . '/expectation.php');
require_once(dirname(__FILE__) . '/dumper.php');
require_once(dirname(__FILE__) . '/simpletest.php');
require_once(dirname(__FILE__) . '/exceptions.php');
require_once(dirname(__FILE__) . '/reflection_php5.php');
/**#@-*/
if (! defined('SIMPLE_TEST')) {
/**
* @ignore
*/
define('SIMPLE_TEST', dirname(__FILE__) . DIRECTORY_SEPARATOR);
}
/**
* Basic test case. This is the smallest unit of a test
* suite. It searches for
* all methods that start with the the string "test" and
* runs them. Working test cases extend this class.
* @package SimpleTest
* @subpackage UnitTester
*/
class SimpleTestCase {
private $label = false;
protected $reporter;
private $observers;
private $should_skip = false;
/**
* Sets up the test with no display.
* @param string $label If no test name is given then
* the class name is used.
* @access public
*/
function __construct($label = false) {
if ($label) {
$this->label = $label;
}
}
/**
* Accessor for the test name for subclasses.
* @return string Name of the test.
* @access public
*/
function getLabel() {
return $this->label ? $this->label : get_class($this);
}
/**
* This is a placeholder for skipping tests. In this
* method you place skipIf() and skipUnless() calls to
* set the skipping state.
* @access public
*/
function skip() {
}
/**
* Will issue a message to the reporter and tell the test
* case to skip if the incoming flag is true.
* @param string $should_skip Condition causing the tests to be skipped.
* @param string $message Text of skip condition.
* @access public
*/
function skipIf($should_skip, $message = '%s') {
if ($should_skip && ! $this->should_skip) {
$this->should_skip = true;
$message = sprintf($message, 'Skipping [' . get_class($this) . ']');
$this->reporter->paintSkip($message . $this->getAssertionLine());
}
}
/**
* Accessor for the private variable $_shoud_skip
* @access public
*/
function shouldSkip() {
return $this->should_skip;
}
/**
* Will issue a message to the reporter and tell the test
* case to skip if the incoming flag is false.
* @param string $shouldnt_skip Condition causing the tests to be run.
* @param string $message Text of skip condition.
* @access public
*/
function skipUnless($shouldnt_skip, $message = false) {
$this->skipIf(! $shouldnt_skip, $message);
}
/**
* Used to invoke the single tests.
* @return SimpleInvoker Individual test runner.
* @access public
*/
function createInvoker() {
return new SimpleErrorTrappingInvoker(
new SimpleExceptionTrappingInvoker(new SimpleInvoker($this)));
}
/**
* Uses reflection to run every method within itself
* starting with the string "test" unless a method
* is specified.
* @param SimpleReporter $reporter Current test reporter.
* @return boolean True if all tests passed.
* @access public
*/
function run($reporter) {
$context = SimpleTest::getContext();
$context->setTest($this);
$context->setReporter($reporter);
$this->reporter = $reporter;
$started = false;
foreach ($this->getTests() as $method) {
if ($reporter->shouldInvoke($this->getLabel(), $method)) {
$this->skip();
if ($this->should_skip) {
break;
}
if (! $started) {
$reporter->paintCaseStart($this->getLabel());
$started = true;
}
$invoker = $this->reporter->createInvoker($this->createInvoker());
$invoker->before($method);
$invoker->invoke($method);
$invoker->after($method);
}
}
if ($started) {
$reporter->paintCaseEnd($this->getLabel());
}
unset($this->reporter);
return $reporter->getStatus();
}
/**
* Gets a list of test names. Normally that will
* be all internal methods that start with the
* name "test". This method should be overridden
* if you want a different rule.
* @return array List of test names.
* @access public
*/
function getTests() {
$methods = array();
foreach (get_class_methods(get_class($this)) as $method) {
if ($this->isTest($method)) {
$methods[] = $method;
}
}
return $methods;
}
/**
* Tests to see if the method is a test that should
* be run. Currently any method that starts with 'test'
* is a candidate unless it is the constructor.
* @param string $method Method name to try.
* @return boolean True if test method.
* @access protected
*/
protected function isTest($method) {
if (strtolower(substr($method, 0, 4)) == 'test') {
return ! SimpleTestCompatibility::isA($this, strtolower($method));
}
return false;
}
/**
* Announces the start of the test.
* @param string $method Test method just started.
* @access public
*/
function before($method) {
$this->reporter->paintMethodStart($method);
$this->observers = array();
}
/**
* Sets up unit test wide variables at the start
* of each test method. To be overridden in
* actual user test cases.
* @access public
*/
function setUp() {
}
/**
* Clears the data set in the setUp() method call.
* To be overridden by the user in actual user test cases.
* @access public
*/
function tearDown() {
}
/**
* Announces the end of the test. Includes private clean up.
* @param string $method Test method just finished.
* @access public
*/
function after($method) {
for ($i = 0; $i < count($this->observers); $i++) {
$this->observers[$i]->atTestEnd($method, $this);
}
$this->reporter->paintMethodEnd($method);
}
/**
* Sets up an observer for the test end.
* @param object $observer Must have atTestEnd()
* method.
* @access public
*/
function tell($observer) {
$this->observers[] = &$observer;
}
/**
* @deprecated
*/
function pass($message = "Pass") {
if (! isset($this->reporter)) {
trigger_error('Can only make assertions within test methods');
}
$this->reporter->paintPass(
$message . $this->getAssertionLine());
return true;
}
/**
* Sends a fail event with a message.
* @param string $message Message to send.
* @access public
*/
function fail($message = "Fail") {
if (! isset($this->reporter)) {
trigger_error('Can only make assertions within test methods');
}
$this->reporter->paintFail(
$message . $this->getAssertionLine());
return false;
}
/**
* Formats a PHP error and dispatches it to the
* reporter.
* @param integer $severity PHP error code.
* @param string $message Text of error.
* @param string $file File error occoured in.
* @param integer $line Line number of error.
* @access public
*/
function error($severity, $message, $file, $line) {
if (! isset($this->reporter)) {
trigger_error('Can only make assertions within test methods');
}
$this->reporter->paintError(
"Unexpected PHP error [$message] severity [$severity] in [$file line $line]");
}
/**
* Formats an exception and dispatches it to the
* reporter.
* @param Exception $exception Object thrown.
* @access public
*/
function exception($exception) {
$this->reporter->paintException($exception);
}
/**
* For user defined expansion of the available messages.
* @param string $type Tag for sorting the signals.
* @param mixed $payload Extra user specific information.
*/
function signal($type, $payload) {
if (! isset($this->reporter)) {
trigger_error('Can only make assertions within test methods');
}
$this->reporter->paintSignal($type, $payload);
}
/**
* Runs an expectation directly, for extending the
* tests with new expectation classes.
* @param SimpleExpectation $expectation Expectation subclass.
* @param mixed $compare Value to compare.
* @param string $message Message to display.
* @return boolean True on pass
* @access public
*/
function assert($expectation, $compare, $message = '%s') {
if ($expectation->test($compare)) {
return $this->pass(sprintf(
$message,
$expectation->overlayMessage($compare, $this->reporter->getDumper())));
} else {
return $this->fail(sprintf(
$message,
$expectation->overlayMessage($compare, $this->reporter->getDumper())));
}
}
/**
* Uses a stack trace to find the line of an assertion.
* @return string Line number of first assert*
* method embedded in format string.
* @access public
*/
function getAssertionLine() {
$trace = new SimpleStackTrace(array('assert', 'expect', 'pass', 'fail', 'skip'));
return $trace->traceMethod();
}
/**
* Sends a formatted dump of a variable to the
* test suite for those emergency debugging
* situations.
* @param mixed $variable Variable to display.
* @param string $message Message to display.
* @return mixed The original variable.
* @access public
*/
function dump($variable, $message = false) {
$dumper = $this->reporter->getDumper();
$formatted = $dumper->dump($variable);
if ($message) {
$formatted = $message . "\n" . $formatted;
}
$this->reporter->paintFormattedMessage($formatted);
return $variable;
}
/**
* Accessor for the number of subtests including myelf.
* @return integer Number of test cases.
* @access public
*/
function getSize() {
return 1;
}
}
/**
* Helps to extract test cases automatically from a file.
* @package SimpleTest
* @subpackage UnitTester
*/
class SimpleFileLoader {
/**
* Builds a test suite from a library of test cases.
* The new suite is composed into this one.
* @param string $test_file File name of library with
* test case classes.
* @return TestSuite The new test suite.
* @access public
*/
function load($test_file) {
$existing_classes = get_declared_classes();
$existing_globals = get_defined_vars();
include_once($test_file);
$new_globals = get_defined_vars();
$this->makeFileVariablesGlobal($existing_globals, $new_globals);
$new_classes = array_diff(get_declared_classes(), $existing_classes);
if (empty($new_classes)) {
$new_classes = $this->scrapeClassesFromFile($test_file);
}
$classes = $this->selectRunnableTests($new_classes);
return $this->createSuiteFromClasses($test_file, $classes);
}
/**
* Imports new variables into the global namespace.
* @param hash $existing Variables before the file was loaded.
* @param hash $new Variables after the file was loaded.
* @access private
*/
protected function makeFileVariablesGlobal($existing, $new) {
$globals = array_diff(array_keys($new), array_keys($existing));
foreach ($globals as $global) {
$GLOBALS[$global] = $new[$global];
}
}
/**
* Lookup classnames from file contents, in case the
* file may have been included before.
* Note: This is probably too clever by half. Figuring this
* out after a failed test case is going to be tricky for us,
* never mind the user. A test case should not be included
* twice anyway.
* @param string $test_file File name with classes.
* @access private
*/
protected function scrapeClassesFromFile($test_file) {
preg_match_all('~^\s*class\s+(\w+)(\s+(extends|implements)\s+\w+)*\s*\{~mi',
file_get_contents($test_file),
$matches );
return $matches[1];
}
/**
* Calculates the incoming test cases. Skips abstract
* and ignored classes.
* @param array $candidates Candidate classes.
* @return array New classes which are test
* cases that shouldn't be ignored.
* @access public
*/
function selectRunnableTests($candidates) {
$classes = array();
foreach ($candidates as $class) {
if (TestSuite::getBaseTestCase($class)) {
$reflection = new SimpleReflection($class);
if ($reflection->isAbstract()) {
SimpleTest::ignore($class);
} else {
$classes[] = $class;
}
}
}
return $classes;
}
/**
* Builds a test suite from a class list.
* @param string $title Title of new group.
* @param array $classes Test classes.
* @return TestSuite Group loaded with the new
* test cases.
* @access public
*/
function createSuiteFromClasses($title, $classes) {
if (count($classes) == 0) {
$suite = new BadTestSuite($title, "No runnable test cases in [$title]");
return $suite;
}
SimpleTest::ignoreParentsIfIgnored($classes);
$suite = new TestSuite($title);
foreach ($classes as $class) {
if (! SimpleTest::isIgnored($class)) {
$suite->add($class);
}
}
return $suite;
}
}
/**
* This is a composite test class for combining
* test cases and other RunnableTest classes into
* a group test.
* @package SimpleTest
* @subpackage UnitTester
*/
class TestSuite {
private $label;
private $test_cases;
/**
* Sets the name of the test suite.
* @param string $label Name sent at the start and end
* of the test.
* @access public
*/
function TestSuite($label = false) {
$this->label = $label;
$this->test_cases = array();
}
/**
* Accessor for the test name for subclasses. If the suite
* wraps a single test case the label defaults to the name of that test.
* @return string Name of the test.
* @access public
*/
function getLabel() {
if (! $this->label) {
return ($this->getSize() == 1) ?
get_class($this->test_cases[0]) : get_class($this);
} else {
return $this->label;
}
}
/**
* Adds a test into the suite by instance or class. The class will
* be instantiated if it's a test suite.
* @param SimpleTestCase $test_case Suite or individual test
* case implementing the
* runnable test interface.
* @access public
*/
function add($test_case) {
if (! is_string($test_case)) {
$this->test_cases[] = $test_case;
} elseif (TestSuite::getBaseTestCase($test_case) == 'testsuite') {
$this->test_cases[] = new $test_case();
} else {
$this->test_cases[] = $test_case;
}
}
/**
* Builds a test suite from a library of test cases.
* The new suite is composed into this one.
* @param string $test_file File name of library with
* test case classes.
* @access public
*/
function addFile($test_file) {
$extractor = new SimpleFileLoader();
$this->add($extractor->load($test_file));
}
/**
* Delegates to a visiting collector to add test
* files.
* @param string $path Path to scan from.
* @param SimpleCollector $collector Directory scanner.
* @access public
*/
function collect($path, $collector) {
$collector->collect($this, $path);
}
/**
* Invokes run() on all of the held test cases, instantiating
* them if necessary.
* @param SimpleReporter $reporter Current test reporter.
* @access public
*/
function run($reporter) {
$reporter->paintGroupStart($this->getLabel(), $this->getSize());
for ($i = 0, $count = count($this->test_cases); $i < $count; $i++) {
if (is_string($this->test_cases[$i])) {
$class = $this->test_cases[$i];
$test = new $class();
$test->run($reporter);
unset($test);
} else {
$this->test_cases[$i]->run($reporter);
}
}
$reporter->paintGroupEnd($this->getLabel());
return $reporter->getStatus();
}
/**
* Number of contained test cases.
* @return integer Total count of cases in the group.
* @access public
*/
function getSize() {
$count = 0;
foreach ($this->test_cases as $case) {
if (is_string($case)) {
if (! SimpleTest::isIgnored($case)) {
$count++;
}
} else {
$count += $case->getSize();
}
}
return $count;
}
/**
* Test to see if a class is derived from the
* SimpleTestCase class.
* @param string $class Class name.
* @access public
*/
static function getBaseTestCase($class) {
while ($class = get_parent_class($class)) {
$class = strtolower($class);
if ($class == 'simpletestcase' || $class == 'testsuite') {
return $class;
}
}
return false;
}
}
/**
* This is a failing group test for when a test suite hasn't
* loaded properly.
* @package SimpleTest
* @subpackage UnitTester
*/
class BadTestSuite {
private $label;
private $error;
/**
* Sets the name of the test suite and error message.
* @param string $label Name sent at the start and end
* of the test.
* @access public
*/
function BadTestSuite($label, $error) {
$this->label = $label;
$this->error = $error;
}
/**
* Accessor for the test name for subclasses.
* @return string Name of the test.
* @access public
*/
function getLabel() {
return $this->label;
}
/**
* Sends a single error to the reporter.
* @param SimpleReporter $reporter Current test reporter.
* @access public
*/
function run($reporter) {
$reporter->paintGroupStart($this->getLabel(), $this->getSize());
$reporter->paintFail('Bad TestSuite [' . $this->getLabel() .
'] with error [' . $this->error . ']');
$reporter->paintGroupEnd($this->getLabel());
return $reporter->getStatus();
}
/**
* Number of contained test cases. Always zero.
* @return integer Total count of cases in the group.
* @access public
*/
function getSize() {
return 0;
}
}
?>
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