AssertNull should be used or AssertNotNull

Question

This is a pretty dumb question but my first time with unit testing so  lets say I have an object variable like obj and I want my unit test to Fail if this obj is Null  so for assertions  should I say AssertNull or AssertNotNull   I get confused how they are named

User · Answer

assertNotNull asserts that the object is not null   If it is null the test fails  so you want that

User · Answer

Use assertNotNull obj   assert means must be

User · Answer

I just want to add that if you want to write special text if It null than you make it like that    Assert assertNotNull  The object you enter return null   str1

User · Answer

The assertNotNull   method means  a passed parameter must not be null   if it is null then the test case fails  The assertNull   method means  a passed parameter must be null   if it is not null then the test case fails     String str1   null  String str2    hello                     Success  assertNotNull str2       Fail  assertNotNull str1       Success  assertNull str1       Fail  assertNull str2

[java] AssertNull should be used or AssertNotNull

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