[prev in list] [next in list] [prev in thread] [next in thread] 

List:       groovy-user
Subject:    Re: [groovy-user] shouldFail and assert against the exception object
From:       Sergey Bondarenko <enterit () gmail ! com>
Date:       2009-05-26 15:54:13
Message-ID: 22ac04340905260854h59f96e25we1e3651bc2c5eb4f () mail ! gmail ! com
[Download RAW message or body]

i do not know why default behaviour was chosen to return exception message.
You could implement your own shouldFail, something like this:
def shouldFail(Class<Exception> expectedExceptionClass = Exception, Closure
closure) {
    try {
        closure()
    } catch(e) {
        if (!expectedExceptionClass.isInstance(e)) {
            throw new AssertionError("Expected exception
$expectedExceptionClass was not thrown")
        }
        return e
    }
    throw new AssertionError("Expected exception $expectedExceptionClass was
not thrown")
}

def throwNPE = {null.dosomething()}
def throwNPEWithMessage = {throw new NullPointerException('some message')}

assert shouldFail{throwNPE()} instanceof NullPointerException
assert shouldFail{throwNPEWithMessage()}.message == 'some message'
shouldFail(IOException){throwNPE()} //fails with java.lang.AssertionError:
Expected exception class java.io.IOException was not thrown


Regards,
Sergey


2009/5/26 Helmut Denk <helmut.denk@gmx.de>

> SchemaValidationException

[Attachment #3 (text/html)]

<div>i do not know why default behaviour was chosen to return exception \
message.</div>You could implement your own shouldFail, something like \
this:<div><br><div><div><div>def shouldFail(Class&lt;Exception&gt; \
expectedExceptionClass = Exception, Closure closure) {</div> <div>       try \
{</div><div>             closure()</div><div>       } catch(e) {</div><div>           \
if (!expectedExceptionClass.isInstance(e)) {</div><div>                   throw new \
AssertionError(&quot;Expected exception $expectedExceptionClass was not \
thrown&quot;)</div> <div>             }</div><div>             return e</div><div>    \
}</div><div>       throw new AssertionError(&quot;Expected exception \
$expectedExceptionClass was not \
thrown&quot;)</div><div>}</div><div><br></div><div>def throwNPE = \
{null.dosomething()}</div> <div>def throwNPEWithMessage = {throw new \
NullPointerException(&#39;some message&#39;)}</div><div><br></div><div>assert \
shouldFail{throwNPE()} instanceof NullPointerException</div><div>assert \
shouldFail{throwNPEWithMessage()}.message == &#39;some message&#39;</div> \
<div>shouldFail(IOException){throwNPE()} //fails with  java.lang.AssertionError: \
Expected exception class java.io.IOException was not \
thrown</div><div><br></div><div><br></div><div>Regards,</div><div>Sergey</div><div><br></div>
 </div></div><div><br><div class="gmail_quote">2009/5/26 Helmut Denk <span \
dir="ltr">&lt;<a href="mailto:helmut.denk@gmx.de">helmut.denk@gmx.de</a>&gt;</span><br><blockquote \
class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc \
solid;padding-left:1ex;"> SchemaValidationException \
</blockquote></div><br></div></div>



[prev in list] [next in list] [prev in thread] [next in thread]