['flood' => true], 'limits' => ['max_size' => 12345, 'nested' => ['x' => 5]], ]; $cfg = new Config($data); $this->assertTrue($cfg->isModuleEnabled('flood')); $this->assertEquals(12345, $cfg->get('limits.max_size')); $this->assertEquals(5, $cfg->get('limits.nested.x')); $this->assertNull($cfg->get('limits.nonexistent')); } }