Why does this test with an instance int pass but this test with a static int fail?
- Why does this test with an instance int pass but this test with a static int fail?
Answers
Because, CHESS runs the test method multiple times and each test method executes in the context of a new instance of the class. So, when you use a static variable, (default) initialization is performed just once. With an instance variable, (default) initialization takes place for each execution of the test method. Make sense? To make the assert pass in the case of the static variable, you should record the value of the static variable at the beginning of the test method in another variable (oldValue), and asset that the final value of _staticTotal is equal to 2+oldValue.
-- Tom- Marked As Answer byTom BallMSFT, ModeratorMonday, August 31, 2009 5:35 AM
All Replies
Because, CHESS runs the test method multiple times and each test method executes in the context of a new instance of the class. So, when you use a static variable, (default) initialization is performed just once. With an instance variable, (default) initialization takes place for each execution of the test method. Make sense? To make the assert pass in the case of the static variable, you should record the value of the static variable at the beginning of the test method in another variable (oldValue), and asset that the final value of _staticTotal is equal to 2+oldValue.
-- Tom- Marked As Answer byTom BallMSFT, ModeratorMonday, August 31, 2009 5:35 AM
- Thanks Tom. That makes sense.
Here it is working:
