$t->is($ph->getAll(), $parameters, '->getAll() returns all parameters from the default namespace');
// ->has()
$t->diag('->has()');
$ph = new sfNamespacedParameterHolder();
$ph->set('foo', 'bar');
$ph->set('myfoo', 'bar', 'symfony/mynamespace');
$t->is($ph->has('foo'), true, '->has() returns true if the key exists');
$t->is($ph->has('bar'), false, '->has() returns false if the key does not exist');
$t->is($ph->has('myfoo'), false, '->has() returns false if the key exists but in another namespace');
$t->is($ph->has('myfoo', 'symfony/mynamespace'), true, '->has() returns true if the key exists in the namespace given as its second argument');
// ->hasNamespace()
$t->diag('->hasNamespace()');
$ph = new sfNamespacedParameterHolder();
$ph->set('foo', 'bar');
$ph->set('myfoo', 'bar', 'symfony/mynamespace');
$t->is($ph->hasNamespace($ph->getDefaultNamespace()), true, '->hasNamespace() returns true for the default namespace');
$t->is($ph->hasNamespace('symfony/mynamespace'), true, '->hasNamespace() returns true if the namespace exists');
$t->is($ph->hasNamespace('symfony/nonexistant'), false, '->hasNamespace() returns false if the namespace does not exist');
// ->remove()
$t->diag('->remove()');
$ph = new sfNamespacedParameterHolder();
$ph->set('foo', 'bar');
$ph->set('myfoo', 'bar');
$ph->set('myfoo', 'bar', 'symfony/mynamespace');
$ph->remove('foo');
$t->is($ph->has('foo'), false, '->remove() removes the key from parameters');
$ph->remove('myfoo');
$t->is($ph->has('myfoo'), false, '->remove() removes the key from parameters');
$t->is($ph->has('myfoo', 'symfony/mynamespace'), true, '->remove() removes the key from parameters for a given namespace');
$ph->remove('myfoo', null, 'symfony/mynamespace');
$t->is($ph->has('myfoo', 'symfony/mynamespace'), false, '->remove() takes a namespace as its third argument');
