public function testCount() { $collection = new A_Collection(); $this->assertEqual($collection->count(), 0); $collection->add('foo'); $this->assertEqual($collection->count(), 1); $collection->set('bar', 'baz'); $this->assertEqual($collection->count(), 2); $collection->set('baz', null); $this->assertEqual($collection->count(), 2); $collection->remove(0); $this->assertEqual($collection->count(), 1); }