TestNG Version

7.4.0

Assert.assertNotEquals(0L, 0);
or a mehot returning long (primitive):
Assert.assertNotEquals(longMethod(), 0);

Expected behavior

AssertionError

Actual behavior

No error, silent assertion mismatch.
Values are compared as Objects, so Long != Integer.

Is the issue reproductible on runner?

• Shell
• Maven
• Gradle
• Ant
• Eclipse
• IntelliJ
• NetBeans

Test case sample

https://github.com/cdalexndr/testng-issue-2561

Oddly, If I add the above test into the testng main repo project test, the test works.
It may also be compiler dependent.