According testng.xml file configuration, test level suite -> test -> class -> methods.
test corresponding to the test testng.xml tag, rather than testing the class @Test.
Test class corresponding to the @Test testng.xml of methods.
Create a TestCase as TC3
running result
Therefore, the use @ BeforeSuite, @ BeforeTest, @ BeforeClass, @ BeforeMethod other labels,
Their actual execution sequence is suite -> test -> class -> method.