public function test_to_array_returns_assoc_array() { $d = new Dictionary('string', 'int'); $d = $d->add('a', 1); $d = $d->add('b', 2); $d = $d->add('c', 3); $arr = $d->toArray(); $this->assertEquals(['a' => 1, 'b' => 2, 'c' => 3], $arr); }