test_case.php

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    /**
     *    @deprecated
     */
    function sendMessage($message) {
        $this->_reporter->PaintMessage($message);
    }

    /**
     *    Accessor for the number of subtests including myelf.
     *    @return integer           Number of test cases.
     *    @access public
     *    @static
     */
    function getSize() {
        return 1;
    }
}

/**
 *  Helps to extract test cases automatically from a file.
 */
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);
        $suite = &$this->createSuiteFromClasses($test_file, $classes);
        return $suite;
    }
    
    /**
     *    Imports new variables into the global namespace.
     *    @param hash $existing   Variables before the file was loaded.
     *    @param hash $new        Variables after the file was loaded.
     *    @access private
     */
    function _makeFileVariablesGlobal($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 $test_file        File name with classes.
     *    @access private
     */
    function _scrapeClassesFromFile($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)) {
                $suite->addTestClass($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 {
    var $_label;
    var $_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;
        }
    }

    /**
     *    @deprecated
     */
    function addTestCase(&$test_case) {
        $this->_test_cases[] = &$test_case;
    }

    /**
     *    @deprecated
     */
    function addTestClass($class) {
        if (TestSuite::getBaseTestCase($class) == 'testsuite') {
            $this->_test_cases[] = &new $class();
        } else {
            $this->_test_cases[] = $class;
        }
    }

    /**
     *    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($class) == 'testsuite') {
            $this->_test_cases[] = &new $class();
        } else {
            $this->_test_cases[] = $class;
        }
    }

    /**
     *    @deprecated
     */
    function addTestFile($test_file) {
        $this->addFile($test_file);
    }

    /**
     *    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;
    }
}

/**
 *    @package      SimpleTest
 *    @subpackage   UnitTester
 *    @deprecated
 */
class GroupTest extends TestSuite { }

/**
 *    This is a failing group test for when a test suite hasn't
 *    loaded properly.
 *    @package      SimpleTest
 *    @subpackage   UnitTester
 */
class BadTestSuite {
    var $_label;
    var $_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;
    }
}

/**
 *    @package      SimpleTest
 *    @subpackage   UnitTester
 *    @deprecated
 */
class BadGroupTest extends BadTestSuite { }
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