Test logic: Empty, notempty, and logic: Present, notpresent

Source: Internet
Author: User

Execute in action writes the following code:

Request. setattribute ("attr1", null); Request. setattribute ("attr2", ""); Request. setattribute ("attr3", new arraylist (); Request. setattribute ("attr4", new userinfo ());

 

Test logic: Empty, notempty, and logic: Present, notpresent -------------------------------------------------------------------------------- attr1 is empty attr1 does not exist -------------------------------------------------------------------------------- attr2 is empty attr2 exist -------------------------------------------------------------------------------- attr3 is empty attr3 exist -------------------------------------------------------------------------------- attr4 not empty attr4 exist -------------------------------------------------------------------------------- attr5 is empty attr5 does not exist

 

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