Can We Catch Assertion Error
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other. Join them; it only takes a minute: Sign up Is it a good idea to catch AssertionError in JUnit tests? up vote 6 down vote favorite 2 I have an object as the result of an API call and I want to assert the values of a member variable. This value can be one of the two assertion error in java expected values depending on what the API call "sees" first and sets first. So if the assertion on one value fails, I want to assert for another value before declaring the test as a failure. What is the best way of doing this? What I have right now is: try { assertEquals("message", someObject.getValue1(), expectedValue1); } catch(AssertionError ae) { assertEquals("message", someObject.getValue1(), expectedValue2); } I am just not sure if this is an acceptable practice. Please comment. java junit4 share|improve this question asked Aug 14 '13 at 1:14 Shine 3315 add a comment| 3 Answers 3 active oldest votes up vote 7 down vote accepted Using exceptions as a sort of glorified goto statement is generally not a good practice. Or at least you will run into people in your career who take a dim view of using exceptions for program flow control. How about: Assert.assertTrue((someObject.getValue1().equals(expectedValue1) || (someObject.getValue2().equals(expectedValue2)); share|improve this answer answered Aug 14 '13 at 1:23 Aquilon 1589 Thanks, @Aquilon! In this case, my asserts are buried in a verification met
New Topic programming forums Java Java JSRs Mobile Certification Databases Caching Books Engineering Languages Frameworks Products This Site Careers Other all forums Forum: Programmer Certification (OCPJP) Can AssertionError can be caught and handled? vvus assertion error processing bharadwaj Ranch Hand Posts: 38 posted 4 years ago I want to know whether Assertions assertion error in java example errors can be caught and they can be handled or not?By handling the code completes normally or not? T also want assertion error matlab to know whether exception of type Error can be caught and handled or not? Gaurangkumar Khalasi Ranch Hand Posts: 187 posted 4 years ago vvus bharadwaj wrote:I want to know whether Assertions errors can be http://stackoverflow.com/questions/18221712/is-it-a-good-idea-to-catch-assertionerror-in-junit-tests caught and they can be handled or not?By handling the code completes normally or not? T also want to know whether exception of type Error can be caught and handled or not? Try out try{ throw new AssertionError(); }catch(Error r){ System.out.println("Hey, i have caught...."); } System.out.println("Hey, Code completes normally...."); Don Redd Ranch Hand Posts: 82 I like... posted 4 years ago You can catch it , but its advised by https://coderanch.com/t/587007/java-programmer-OCPJP/certification/AssertionError-caught-handled SUN that you should never try to catch and recover from Assertion errors(its not appropriate use of assertions) gurpeet singh Ranch Hand Posts: 924 1 I like... posted 4 years ago what is the fun of catching assertion error ? it is meant to tell you that what you have asserted is not true. if you catch it , you won't be able to know what went wrong. Nitish Bangera Ranch Hand Posts: 537 I like... posted 4 years ago We use asserts for debugging and also for Junit tests. If you catch the assertion error, there is no use of putting it there. Also, always follow normal standards i.e. never catch unchecked exceptions and errors. [ SCJP 6.0 - 90% ] , JSP, Servlets and Learning EJB. Try out the programs using a TextEditor. Textpad - Java 6 api Post Reply Bookmark Topic Watch Topic New Topic Similar Threads IBM mock how to tell whether the exception is a checked exception Is it fine to throw an Exception as it is or wrap it Can we catch Errors... catch block..... All times are in JavaRanch time: GMT-6 in summer, GMT-7 in winter Contact Us | advertise | mobile view | Powered by JForum | Copyright © 1998-2016 Paul Wheaton
get tips & solutions from a community of 418,469 IT Pros & Developers. It's quick & easy. catching assertion error P: n/a Eric is it possible to catch an assertion error? that is, could the following block of code be made to run? assert https://bytes.com/topic/c/answers/560525-catching-assertion-error (false); catch (...) {} Nov 7 '06 #1 Post Reply Share this Question 6 Replies P: n/a mlimber Eric wrote: is it possible to catch an assertion error? that is, could the following block of code be made to run? assert (false); http://craftingjava.blogspot.com/2012/07/javalangassertionerror.html catch (...) {} No. Asserts are different from exceptions, and if you want to catch, you must throw. Cheers! --M Nov 7 '06 #2 P: n/a Julián Albo Eric wrote: is it possible to catch an assertion error? that is, could the following assertion error block of code be made to run? assert (false); catch (...) {} The standard assert just prints some information and calls abort. Of course you can write your own assert macro and not include the standard header, but is clearer to use another name, such as ASSERT, MY_PROJECT_ASSERT... or better yet, don't use in the name nothing similar to assert if you want to use it as an exception and not as an assertion. For example, something like LOGIC_CHECK that throws std::logic_error if failed looks reasonable assertion error in to me. -- Salu2 Nov 7 '06 #3 P: n/a Salt_Peter Eric wrote: is it possible to catch an assertion error? that is, could the following block of code be made to run? assert (false); catch (...) {} No, if you want to catch, someone has to throw the ball (or whatever). #include
how assertions differs from Exception handling technique.We all know about how assertions works.But anyway,Let's have a glance at assertions to know its advantage. Assertions are used to evaluate a condition.If the condition gets failed then they will throw java.lang.Assertion error. Usage of Assertions: 1.assert a!=null; This statement will check whether 'a' is null or not.If 'a' is null then this statement will throw an Assertion error.you could have thought of throwing an NullPointerException and processing it using the try and catch block rather than using the Assertion error. But one of the great advantage of assertions when compared to exception handling is that assertions allows us to use condition checks during testing and automatically removes thestatements from the generated code thereby not affecting the execution speed. If you have lot of conditions to be checked in your program and have implemented exception handling techniques for violation of conditions,then this will slower the program execution. I have shown this slowering of the program execution, using the two programs that i have included in this post. When do we need this Assertion? Note that the assertion should be used to deal with unrecoverable errors or errors that will disrupt operation of the entire program.Mostly it will not be used to deal withrecoverable conditions. one of the most common example where assertion can be used is explained through the sorting program.In the sorting program it would be used tocheck the validity of parameters passed. If we want to sort an array of elements then before sorting it we should ensure that the array is not null.For this case assertion can be used.If an assertion error occurs then we can terminate the program rather than applying the sorting operations on that array. The two different implementations of the sorting program that throws assertion error and also an other progr