/**
* create a bootstrapper to mock file system:
* the file mentionned in the mutation will be virtualized in the application and replaced
* with own mutated file
*
* @param MutationInterface $mutation
* @return string
*/
public function createFileSystemMock(MutationInterface $mutation)
{
// temporary file
$temporaryFile = tempnam(sys_get_temp_dir(), 'mutate-mock');
file_put_contents($temporaryFile, $mutation->getTokens()->asString());
// mocking system
$bootstrapContent = '' . file_get_contents(__DIR__ . '/../../StreamWrapper/FileMutator.php') . "\n \\Hal\\MutaTesting\\StreamWrapper\\FileMutator::initialize();" . sprintf("\n \\Hal\\MutaTesting\\StreamWrapper\\FileMutator::addMutatedFile('%s', '%s'); ?>", $mutation->getSourceFile(), $temporaryFile);
$bootstrapFile = sys_get_temp_dir() . DIRECTORY_SEPARATOR . 'bootstrap-' . md5(uniqid()) . '.php';
file_put_contents($bootstrapFile, $bootstrapContent);
return $bootstrapFile;
}
public function mutate(MutationInterface $original, $index)
{
$token = $original->getTokens()->offsetGet($index);
if ($token->getType() !== T_ELSE) {
throw new \UnexpectedValueException(sprintf('invalid token "%s" given in %s', token_name($token->getType()), get_class($this)));
}
// look for the closing bracket
$tokens = $original->getTokens();
$len = $tokens->count();
$end = false;
for ($i = $index; $i < $len; $i++) {
$token = $tokens->offsetGet($i);
if ($token->getType() === T_STRING && $token->getValue() === '}') {
$end = $i;
break;
}
}
if (false === $end) {
throw new \OutOfRangeException('closing bracket not found for else');
}
// remove all concerned tokens
$tokens = $tokens->remove($index, $end);
$new = new \Hal\MutaTesting\Mutation\Mutation();
$new->setTokens($tokens)->setUnit($original->getUnit())->setSourceFile($original->getSourceFile())->setTestFile($original->getTestFile())->setMutedTokensIndexes(array_merge($original->getMutedTokensIndexes(), range($index, $end)));
return $new;
}
protected function mutateOne(MutationInterface $original, $index, $expected, Token $newToken)
{
$token = $original->getTokens()->offsetGet($index);
if ($token->getType() !== $expected) {
throw new \UnexpectedValueException(sprintf('invalid token "%s" given in %s', token_name($token->getType()), get_class($this)));
}
$new = new \Hal\MutaTesting\Mutation\Mutation();
$new->setTokens($original->getTokens()->replace($index, $newToken))->setUnit($original->getUnit())->setSourceFile($original->getSourceFile())->setTestFile($original->getTestFile())->setMutedTokensIndexes(array_merge($original->getMutedTokensIndexes(), array($index)));
return $new;
}
public function isSatisfedBy(MutationInterface $mutation, $index)
{
$filename = $mutation->getSourceFile();
//
// Avoid to make same mutations
if (!isset($this->alreadyMuted[$filename])) {
$this->alreadyMuted[$filename] = array();
}
foreach ($mutation->getMutedTokensIndexes() as $index) {
if (isset($this->alreadyMuted[$filename][$index])) {
return false;
}
$this->alreadyMuted[$filename][$index] = 1;
}
//
// keep only complex files
if (!isset($this->notes[$filename])) {
$bugs = $this->halstead->calculate($filename)->getBugs();
$this->notes[$filename] = $bugs;
}
return $this->notes[$filename] > $this->limit;
}