silverstripe-framework/dev/TestViewer.php

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<?php
/**
* Allows human reading of a test in a format suitable for agile documentation
* @package sapphire
* @subpackage testing
*/
class TestViewer extends Controller {
/**
* Define a simple finite state machine.
* Top keys are the state names. 'start' is the first state, and 'die' is the error state.
* Inner keys are token names/codes. The values are either a string, new state, or an array(new state, handler method).
* The handler method will be passed the PHP token as an argument, and is expected to populate a property of the object.
*/
static $fsm = array(
'start' => array(
T_CLASS => array('className','createClass'),
),
'className' => array(
T_STRING => array('classSpec', 'setClassName'),
),
'classSpec' => array(
'{' => 'classBody',
),
'classBody' => array(
T_FUNCTION => array('methodName','createMethod'),
'}' => array('start', 'completeClass'),
),
'methodName' => array(
T_STRING => array('methodSpec', 'setMethodName'),
),
'methodSpec' => array(
'{' => 'methodBody',
),
'methodBody' => array(
'{' => array('!push','appendMethodContent'),
'}' => array(
'hasstack' => array('!pop', 'appendMethodContent'),
'nostack' => array('classBody', 'completeMethod'),
),
T_VARIABLE => array('variable', 'potentialMethodCall'),
T_COMMENT => array('', 'appendMethodComment'),
'*' => array('', 'appendMethodContent'),
),
'variable' => array(
T_OBJECT_OPERATOR => array('variableArrow', 'potentialMethodCall'),
'*' => array('methodBody', 'appendMethodContent'),
),
'variableArrow' => array(
T_STRING => array('methodOrProperty', 'potentialMethodCall'),
T_WHITESPACE => array('', 'potentialMethodCall'),
'*' => array('methodBody', 'appendMethodContent'),
),
'methodOrProperty' => array(
'(' => array('methodCall', 'potentialMethodCall'),
T_WHITESPACE => array('', 'potentialMethodCall'),
'*' => array('methodBody', 'appendMethodContent'),
),
'methodCall' => array(
'(' => array('!push/nestedInMethodCall', 'potentialMethodCall'),
')' => array('methodBody', 'completeMethodCall'),
'*' => array('', 'potentialMethodCall'),
),
'nestedInMethodCall' => array(
'(' => array('!push', 'potentialMethodCall'),
')' => array('!pop', 'potentialMethodCall'),
'*' => array('', 'potentialMethodCall'),
),
);
function createClass($token) {
$this->currentClass = array();
}
function setClassName($token) {
$this->currentClass['name'] = $token[1];
}
function completeClass($token) {
$this->classes[] = $this->currentClass;
}
function createMethod($token) {
$this->currentMethod = array();
$this->currentMethod['content'] = "<pre>";
}
function setMethodName($token) {
$this->currentMethod['name'] = $token[1];
}
function appendMethodComment($token) {
if(substr($token[1],0,2) == '/*') {
$comment = preg_replace('/^\/\*/','',$token[1]);
$comment = preg_replace('/\*\/$/','',$comment);
$comment = preg_replace('/\n[\t ]*\* */m',"\n",$comment);
$this->closeOffMethodContentPre();
$this->currentMethod['content'] .= "<p>$comment</p><pre>";
} else {
$this->currentMethod['content'] .= $this->renderToken($token);
}
}
function appendMethodContent($token) {
if($this->potentialMethodCall) {
$this->currentMethod['content'] .= $this->potentialMethodCall;
$this->potentialMethodCall = "";
}
$this->currentMethod['content'] .= $this->renderToken($token);
}
function completeMethod($token) {
$this->closeOffMethodContentPre();
$this->currentMethod['content'] = str_replace("\n\t\t","\n",$this->currentMethod['content']);
$this->currentClass['methods'][] = $this->currentMethod;
}
protected $potentialMethodCall = "";
function potentialMethodCall($token) {
$this->potentialMethodCall .= $this->renderToken($token);
}
function completeMethodCall($token) {
$this->potentialMethodCall .= $this->renderToken($token);
if(strpos($this->potentialMethodCall, '-&gt;</span><span class="T_STRING">assert') !== false) {
$this->currentMethod['content'] .= "<strong>" . $this->potentialMethodCall . "</strong>";
} else {
$this->currentMethod['content'] .= $this->potentialMethodCall;
}
$this->potentialMethodCall = "";
}
/**
* Finish the <pre> block in method content.
* Will remove whitespace and <pre></pre> blocks
*/
function closeOffMethodContentPre() {
$this->currentMethod['content'] = trim($this->currentMethod['content']);
if(substr($this->currentMethod['content'],-5) == '<pre>') $this->currentMethod['content'] = substr($this->currentMethod['content'], 0,-5);
else $this->currentMethod['content'] .= '</pre>';
}
/**
* Render the given token as HTML
*/
function renderToken($token) {
$tokenContent = htmlentities(is_array($token) ? $token[1] : $token);
$tokenName = is_array($token) ? token_name($token[0]) : 'T_PUNCTUATION';
switch($tokenName) {
case "T_WHITESPACE":
return $tokenContent;
default:
return "<span class=\"$tokenName\">$tokenContent</span>";
}
}
protected $classes = array();
protected $currentMethod, $currentClass;
function Content() {
$className = $this->urlParams['ID'];
if($className && ClassInfo::exists($className)) {
return $this->testAnalysis(getClassFile($className));
} else {
$result = "<h1>View any of the following test classes</h1>";
$classes = ClassInfo::subclassesFor('SapphireTest');
ksort($classes);
foreach($classes as $className) {
if($className == 'SapphireTest') continue;
$result .= "<li><a href=\"TestViewer/show/$className\">$className</a></li>";
}
return $result;
}
}
function testAnalysis($file) {
$content = file_get_contents($file);
$tokens = token_get_all($content);
// Execute a finite-state-machine with a built-in state stack
// This FSM+stack gives us enough expressive power for simple PHP parsing
$state = "start";
$stateStack = array();
//echo "<li>state $state";
foreach($tokens as $token) {
// Get token name - some tokens are arrays, some arent'
if(is_array($token)) $tokenName = $token[0]; else $tokenName = $token;
//echo "<li>token '$tokenName'";
// Find the rule for that token in the current state
if(isset(self::$fsm[$state][$tokenName])) $rule = self::$fsm[$state][$tokenName];
else if(isset(self::$fsm[$state]['*'])) $rule = self::$fsm[$state]['*'];
else $rule = null;
// Check to see if we have specified multiple rules depending on whether the stack is populated
if(is_array($rule) && array_keys($rule) == array('hasstack', 'nostack')) {
if($stateStack) $rule = $rule['hasstack'];
else $rule = $rule = $rule['nostack'];
}
if(is_array($rule)) {
list($destState, $methodName) = $rule;
$this->$methodName($token);
} else if($rule) {
$destState = $rule;
} else {
$destState = null;
}
//echo "<li>->state $destState";
if(preg_match('/!(push|pop)(\/[a-zA-Z0-9]+)?/', $destState, $parts)) {
$action = $parts[1];
$argument = isset($parts[2]) ? substr($parts[2],1) : null;
$destState = null;
switch($action) {
case "push":
$stateStack[] = $state;
if($argument) $destState = $argument;
break;
case "pop":
if($stateStack) $destState = array_pop($stateStack);
else if($argument) $destState = $argument;
else user_error("State transition '!pop' was attempted with an empty state-stack and no default option specified.", E_USER_ERROR);
}
}
if($destState) $state = $destState;
if(!isset(self::$fsm[$state])) user_error("Transition to unrecognised state '$state'", E_USER_ERROR);
}
$subclasses = ClassInfo::subclassesFor('SapphireTest');
foreach($this->classes as $classDef) {
if(in_array($classDef['name'], $subclasses)) {
echo "<h1>$classDef[name]</h1>";
if($classDef['methods']) foreach($classDef['methods'] as $method) {
if(substr($method['name'],0,4) == 'test') {
//$title = ucfirst(strtolower(preg_replace('/([a-z])([A-Z])/', '$1 $2', substr($method['name'], 4))));
$title = $method['name'];
echo "<h2>$title</h2>";
echo $method['content'];
}
}
}
}
}
}