Java is not trowing Arithmetic exception

Question

I have this Java code:

public class Calc {
    public int quotient(int a, int b){
        return a/b;
    }
}

and TestNG unit test for this method:

@Test ()
public void testingMethod3() {
    Assert.assertEquals(0, calc.quotient(5,0));
}

On my work computer I successfully get

java.lang.ArithmeticException: / by zero

message, as expected.

But when my colleague runs this test on home computer, then mentioned exception is not throwing and test passes.

How this magic could occur?

P.S. Environment OS: Windows 10 TestNG version: 6.13.1 Java version: 8 (don't know exact build version)

P.P.S. Deletion of target folder and rebuilding of the project was that very helpful solution. Seem like IDE cashed old project sources, and didn't flush them after changes in the code.

It's a division by 0... If you friend is telling you that he doesn't get this exception, he is either lying or is using another number than 0 for b. — Herr Derb, Feb 16 '18 at 12:24
I'm not sure about copy paste error. this code was written at home, and commited to repository. At work we just pulled it, and ran once again. On both work PCs it worked as expected, with exception. — Sančiezz, Feb 16 '18 at 12:24
Java or TestNG version theme? Was there an exception handling change? — Maia, Feb 16 '18 at 12:24
did your collegue recompile the code before trying to run it? — Stultuske, Feb 16 '18 at 12:25
@Stultuske Thank you for idea. I've suggested to delete target folder, and recompile the project. — Sančiezz, Feb 16 '18 at 12:35

score 1 · Answer 1 · answered Feb 16 '18 at 12:27

In the past, I experienced something like yours. Because different JDK compile environment and/or JRE runtime environment. And need check the different of version of TestNG.

check by add few line of code to print Java properties.

Properties p = System.getProperties();
Enumeration keys = p.keys();
while (keys.hasMoreElements()) {
    String key = (String)keys.nextElement();
    String value = (String)p.get(key);
    System.out.println(key + ": " + value);
}

then comparing

Java is not trowing Arithmetic exception

1 Answers1