public function testConstants()
{
$this->assertNotEmpty(THINK_START_TIME);
$this->assertNotEmpty(THINK_START_MEM);
$this->assertNotEmpty(THINK_VERSION);
$this->assertNotEmpty(DS);
$this->assertNotEmpty(THINK_PATH);
$this->assertNotEmpty(LIB_PATH);
$this->assertNotEmpty(EXTEND_PATH);
$this->assertNotEmpty(CORE_PATH);
$this->assertNotEmpty(TRAIT_PATH);
$this->assertNotEmpty(APP_PATH);
$this->assertNotEmpty(RUNTIME_PATH);
$this->assertNotEmpty(LOG_PATH);
$this->assertNotEmpty(CACHE_PATH);
$this->assertNotEmpty(TEMP_PATH);
$this->assertNotEmpty(VENDOR_PATH);
$this->assertNotEmpty(EXT);
$this->assertNotEmpty(ENV_PREFIX);
$this->assertTrue(!is_null(IS_WIN));
$this->assertTrue(!is_null(IS_CLI));
}