Altax\Module\Env\EnvModule::get PHP Method

    public function get($key, $default = null)
    {
        return isset($this->vars[$key]) ? $this->vars[$key] : $default;
    }

 public function testSetAndGet()
 {
     $module = new EnvModule($this->container);
     $module->set("aaa", "bbb");
     $this->assertEquals("bbb", $module->get("aaa"));
     $this->assertEquals(null, $module->get("aaab"));
 }