Re: Custom classloader

"Johannes Ernst [email protected] [junit]" <[email protected]> Tue, 19 May 2015 14:37:28 -0700
Newsgroups gmane.comp.java.junit.user
Message-ID <[email protected]>
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How sneaky! I didn=E2=80=99t think of that approach. You basically ignore t=
he classes that junit handed you, and load them yourself?

> On May 19, 2015, at 13:53, Bill Shannon [email protected] [junit] <=
[email protected]> wrote:
>=20
> I created a ClassLoaderSuite <https://java.net/projects/javamail/sources/=
mercurial/content/mail/src/test/java/com/sun/mail/test/ClassLoaderSuite.jav=
a> to do this for JavaMail testing several years ago.
>=20
> David Saff [email protected] <mailto:[email protected]> [junit] wrote on 05/1=
9/15 11:01:
>=20
>>=20=20
>> You should be able to do it with a custom Runner.  As Aaron pointed out,=
 Robolectric does it, and I'd definitely recommend poking around their code=
 a bit.  I don't think any patches to JUnit should be necessary.
>>=20
>> On Tue, May 19, 2015 at 7:11 AM, Malte Finsterwalder malte@finsterwalder=
.name <mailto:[email protected]> [junit] <[email protected] <mai=
lto:[email protected]>> wrote:
>>=20=20
>> Hi Johannes,
>>=20
>> I'm totally on Dawids side: Why do you need custom classloading?
>> On the other hand, if you really, really need it, you may be able to rea=
lize it by wrapping surefire or JUnit (or both) somehow. And there is alway=
s bytecode-manipulation. :-)
>> But then again: JUnit is no magic. You could even write your own very si=
mple test execution framework for your particular problem. And you could ev=
en base it on JUnits capabilities.
>> Just to spray some more ideas...
>>=20
>> Greetings,
>>    Malte
>> =E2=80=8B
>>=20
>=20
>=20
>=20


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How sneaky! I didn=E2=80=99t think of that approach. You basically ignore t=
he classes that junit handed you, and load them yourself?<div class=3D""><b=
r class=3D""><div><blockquote type=3D"cite" class=3D""><div class=3D"">On M=
ay 19, 2015, at 13:53, Bill Shannon <a href=3D"mailto:[email protected]=
om" class=3D"">[email protected]</a> [junit] &lt;<a href=3D"mailto:ju=
[email protected]" class=3D"">[email protected]</a>&gt; wrote:</div><=
br class=3D"Apple-interchange-newline"><div class=3D""><div id=3D"ygrp-mlms=
g" style=3D"font-size: 13px; font-family: Arial, helvetica, clean, sans-ser=
if; font-style: normal; font-variant: normal; font-weight: normal; letter-s=
pacing: normal; line-height: normal; orphans: auto; text-align: start; text=
-indent: 0px; text-transform: none; white-space: normal; widows: auto; word=
-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 2=
55, 255); position: relative;" class=3D""><div id=3D"ygrp-msg" style=3D"lin=
e-height: 1.22em; z-index: 1;" class=3D""><div id=3D"ygrp-text" style=3D"li=
ne-height: 1.22em; font-family: Georgia;" class=3D""><p style=3D"line-heigh=
t: 1.22em; margin: 0px 0px 1em;" class=3D"">I created a<span class=3D"Apple=
-converted-space">&nbsp;</span><a href=3D"https://java.net/projects/javamai=
l/sources/mercurial/content/mail/src/test/java/com/sun/mail/test/ClassLoade=
rSuite.java" style=3D"line-height: 1.22em; font-family: Verdana;" class=3D"=
">ClassLoaderSuite</a><span class=3D"Apple-converted-space">&nbsp;</span>to=
 do this for JavaMail testing several years ago.<br style=3D"line-height: 1=
.22em;" class=3D""><br style=3D"line-height: 1.22em;" class=3D"">David Saff=
<span class=3D"Apple-converted-space">&nbsp;</span><a class=3D"moz-txt-link=
-abbreviated" href=3D"mailto:[email protected]" style=3D"line-height: 1.22em;=
 font-family: Verdana;">[email protected]</a><span class=3D"Apple-converted-s=
pace">&nbsp;</span>[junit] wrote on 05/19/15 11:01:</p><blockquote cite=3D"=
mid:CALrw-PxDQ7Ef63yrWU_+6ftaCfAhFYwZaBjsqPNxX1eUj8WzQw@mail.gmail.com" typ=
e=3D"cite" style=3D"margin: 0px 0px 0px 4px; line-height: 1.22em;" class=3D=
""><span style=3D"line-height: 1.22em;" class=3D"">&nbsp;</span><div id=3D"=
ygrp-text" style=3D"line-height: 1.22em; font-family: Georgia;" class=3D"">=
<div dir=3D"ltr" style=3D"line-height: 1.22em;" class=3D"">You should be ab=
le to do it with a custom Runner.&nbsp; As Aaron pointed out, Robolectric d=
oes it, and I'd definitely recommend poking around their code a bit.&nbsp; =
I don't think any patches to JUnit should be necessary.</div><div class=3D"=
gmail_extra" style=3D"line-height: 1.22em;"><br style=3D"line-height: 1.22e=
m;" class=3D""><div class=3D"gmail_quote" style=3D"line-height: 1.22em;">On=
 Tue, May 19, 2015 at 7:11 AM, Malte Finsterwalder<span class=3D"Apple-conv=
erted-space">&nbsp;</span><a moz=3D"true" href=3D"mailto:malte@finsterwalde=
r.name" style=3D"line-height: 1.22em;" class=3D"">[email protected]<=
/a><span class=3D"Apple-converted-space">&nbsp;</span>[junit]<span class=3D=
"Apple-converted-space">&nbsp;</span><span dir=3D"ltr" style=3D"line-height=
: 1.22em;" class=3D"">&lt;<a moz=3D"true" href=3D"mailto:junit@yahoogroups.=
com" target=3D"_blank" style=3D"line-height: 1.22em;" class=3D"">junit@yaho=
ogroups.com</a>&gt;</span><span class=3D"Apple-converted-space">&nbsp;</spa=
n>wrote:<br style=3D"line-height: 1.22em;" class=3D""><blockquote class=3D"=
gmail_quote" style=3D"margin: 0px 0px 0px 4px; line-height: 1.22em; border-=
left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: =
solid;"><div style=3D"line-height: 1.22em; background-color: rgb(255, 255, =
255);" class=3D""><span style=3D"line-height: 1.22em;" class=3D"">&nbsp;</s=
pan><div style=3D"line-height: 1.22em;" class=3D""><div style=3D"line-heigh=
t: 1.22em;" class=3D""><div style=3D"line-height: 1.22em;" class=3D""><div =
dir=3D"ltr" style=3D"line-height: 1.22em;" class=3D"">Hi Johannes,<div styl=
e=3D"line-height: 1.22em;" class=3D""><br style=3D"line-height: 1.22em;" cl=
ass=3D""></div><div style=3D"line-height: 1.22em;" class=3D"">I'm totally o=
n Dawids side: Why do you need custom classloading?</div><div style=3D"line=
-height: 1.22em;" class=3D"">On the other hand, if you really, really need =
it, you may be able to realize it by wrapping surefire or JUnit (or both) s=
omehow. And there is always bytecode-manipulation. :-)</div><div style=3D"l=
ine-height: 1.22em;" class=3D"">But then again: JUnit is no magic. You coul=
d even write your own very simple test execution framework for your particu=
lar problem. And you could even base it on JUnits capabilities.</div><div s=
tyle=3D"line-height: 1.22em;" class=3D"">Just to spray some more ideas...</=
div><div style=3D"line-height: 1.22em;" class=3D""><br style=3D"line-height=
: 1.22em;" class=3D""></div><div style=3D"line-height: 1.22em;" class=3D"">=
Greetings,</div><div style=3D"line-height: 1.22em;" class=3D"">&nbsp; &nbsp=
;Malte</div>=E2=80=8B</div></div></div></div></div></blockquote></div><br s=
tyle=3D"line-height: 1.22em;" class=3D""></div></div></blockquote><br style=
=3D"line-height: 1.22em;" class=3D""><div style=3D"line-height: 1.22em; mar=
gin: 0px 0px 1em;" class=3D""><br class=3D"webkit-block-placeholder"></div>=
</div><div style=3D"line-height: 1.22em; color: rgb(255, 255, 255); height:=
 0px;" class=3D""></div></div></blockquote></div><br class=3D""></div>



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