$t->diag('__construct()');
$engine = new ProjectTemplateEngine($loader);
$t->is($engine->getLoader(), $loader, '__construct() takes a loader instance as its second first argument');
$t->is(array_keys($engine->getRenderers()), array('php'), '__construct() automatically registers a PHP renderer if none is given');
$t->ok($engine->getHelperSet() instanceof sfTemplateHelperSet, '__construct() automatically creates a helper set if none is given');
$engine = new ProjectTemplateEngine($loader, array('foo' => $renderer));
$t->is(array_keys($engine->getRenderers()), array('foo', 'php'), '__construct() takes an array of renderers as its third argument');
$t->ok($renderer->getEngine() === $engine, '__construct() registers itself on all renderers');
$engine = new ProjectTemplateEngine($loader, array('php' => $renderer));
$t->ok($engine->getRenderers() === array('php' => $renderer), '__construct() can overridde the default PHP renderer');
$engine = new ProjectTemplateEngine($loader, array(), $helperSet = new sfTemplateHelperSet());
$t->ok($engine->getHelperSet() === $helperSet, '__construct() takes a helper set as its third argument');
// ->getHelperSet() ->setHelperSet()
$t->diag('->getHelperSet() ->setHelperSet()');
$engine = new ProjectTemplateEngine($loader);
$engine->setHelperSet(new sfTemplateHelperSet(array('foo' => $helper = new SimpleHelper('bar'))));
$t->is((string) $engine->getHelperSet()->get('foo'), 'bar', '->setHelperSet() sets a helper set');
// __get()
$t->diag('__get()');
$t->is($engine->foo, $helper, '->__get() returns the value of a helper');
try {
$engine->bar;
$t->fail('->__get() throws an InvalidArgumentException if the helper is not defined');
} catch (InvalidArgumentException $e) {
$t->pass('->__get() throws an InvalidArgumentException if the helper is not defined');
}
// ->get() ->set() ->has()
$t->diag('->get() ->set() ->has()');
$engine = new ProjectTemplateEngine($loader);
$engine->set('foo', 'bar');
$t->is($engine->get('foo'), 'bar', '->set() sets a slot value');
