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Re: [tycho-user] getResource() in test cases
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Tycho runs tests with current working directory set to project basedir.
Same as JDT and PDE default config.
--
Regards,
Igor
On 2013-09-09 7:56 AM, Mikhail Kalkov wrote:
From http://docs.oracle.com/javase/6/docs/api/java/io/File.html:
A pathname, whether abstract or in string form, may be either absolute or relative. An absolute pathname is complete in that no other information is required in order to locate the file that it denotes. A relative pathname, in contrast, must be interpreted in terms of information taken from some other pathname. ***By default the classes in the java.io package always resolve relative pathnames against the current user directory.*** This directory is named by the system property user.dir, and is typically the directory in which the Java virtual machine was invoked.
Igor, does tycho-surefire-plugin always run tests with user.dir set to the path to the unjarred test bundle or how else does the "new File(project-relative-path)" trick work?
/Mikhail
----- Ursprungligt meddelande -----
Från: "Igor Fedorenko" <igor@xxxxxxxxxxxxxx>
Till: tycho-user@xxxxxxxxxxx
Skickat: lördag, 7 sep 2013 17:36:41
Ämne: Re: [tycho-user] getResource() in test cases
Your test bundle is a fragment, this means it does not have its own
classloader. I don't know enough about Equinox, but I think it will
always return bundleresource:// URLs when loaded resources from fragment
bundles.
So you either need to use non-fragment test bundle or don't assume
file:// test resource URLs.
Another possibility is to use "new File(project-relative-path)" instead
of ClassLoader.getResource. This is what I usually do in my tests.
--
Regards,
Igor
On 2013-09-06 10:06 AM, Dirk Fauth wrote:
Here are the projects I used to play around with the resources issue.
Please tell me if you received them this way or if I should use another
way of sharing the example with you.
On Fri, Sep 6, 2013 at 3:51 PM, Igor Fedorenko <igor@xxxxxxxxxxxxxx
<mailto:igor@xxxxxxxxxxxxxx>> wrote:
Not sure. I need a small standalone example that demonstrates the
problem to tell if this is a bug or not.
--
Regards,
Igor
On 2013-09-06 9:41 AM, Dirk Fauth wrote:
This is not entirely true, at least this is not how it's supposed to
work. More specifically, the test bundle itself is supposed to be
directory-based, i.e. not a packaged jar, so resources coming
from the
test bundle are expected to have file:// urls.
So this means I ran across some bug?
On Fri, Sep 6, 2013 at 3:21 PM, Igor Fedorenko
<igor@xxxxxxxxxxxxxx <mailto:igor@xxxxxxxxxxxxxx>
<mailto:igor@xxxxxxxxxxxxxx <mailto:igor@xxxxxxxxxxxxxx>>> wrote:
On 2013-09-06 7:10 AM, Dirk Fauth wrote:
Hi,
thanks for the replies. I was digging into this a bit
deeper
regarding
your answers and found out several facts. So to help
others who
face the
same issues, here are my results:
1. The surefire tests are only executed in the install
phase.
Personally
this is confusing, as I tried to build my shortened
examples
using "mvn
test" and "mvn package" as I didn't wanted to install
it. And no
tests
where executed. They are only executed when executing
"mvn install".
Maybe not a big deal and necessary to ensure correct test
execution, but
IMHO confusing. So you need to be aware of that when
using Tycho.
Tycho tests are executed during integration-test phase.
2. With the answers of Mickael Istria and Mikhail
Karkov I was
able to
find out what's going on. It is very important to know
that the
tests
are executed against the packaged plugin jar. Because
of this,
the URL
changes in test execution. While executing the test in
the IDE
the URL
is a "file:/" URL, executing the test with Tycho it
will be a
"bundleclass:/" URL. Using Java File or NIO API, the
file can not be
loaded with conventional methods if the URL starts with
"bundleclass".
This is not entirely true, at least this is not how it's
supposed to
work. More specifically, the test bundle itself is supposed
to be
directory-based, i.e. not a packaged jar, so resources
coming from the
test bundle are expected to have file:// urls. It is also
possible to
control what other plugins should be directory-based during
the test,
either using Eclipse-BundleShape:dir directory in bundle
manifest or
using <explodedBundles> tycho-surefire-plugin configuration.
--
Regards,
Igor
So how to solve this?
The solution mentioned by Mikhail Karkov is a possible
workaround, but
IMHO it is not a very elegant one. Because in that case
I am
forced to
implement my test cases with a quite hard dependency to the
environment.
If I simply want to test some file util classes, I
don't want to
deal
with that.
I tested and verified two possible workarounds that
look a bit more
environment independent.
1. Use getResourceAsStream() instead of getResource()
If you only need to read from the file, you don't need
the File
reference. The returning InputStream can be used to
read from
the file
perfectly. There is no need to deal with the
environment in that
case.
2. Copy the resources out of the jar into a file system
location and
operate on that resource instead of a plugin resource
This is the only solution I've found so far to make file
operation tests
work. So the process for testing need to be:
- copy the necessary resources to the file system
- operate on those resources instead of the ones in the
plugin jar
- after execution cleanup the created resources
Possibly in this case a TestSuite wrapper can be used
to ensure
the copy
and cleanup code in @BeforeClass and @AfterClass as
explained here:
http://stackoverflow.com/____questions/6580670/testsuite-____setup-in-junit-4
<http://stackoverflow.com/__questions/6580670/testsuite-__setup-in-junit-4>
<http://stackoverflow.com/__questions/6580670/testsuite-__setup-in-junit-4
<http://stackoverflow.com/questions/6580670/testsuite-setup-in-junit-4>>
But I haven't tested that yet and will modify my test
cases now
to see
if that works too.
Hopefully my investigation helps others with the same
issues. If my
results are wrong, please let me know!
Greez,
Dirk
On Thu, Sep 5, 2013 at 5:35 PM, Mikhail Kalkov
<mikhail.kalkov@xxxxxxxxxxxxxx
<mailto:mikhail.kalkov@xxxxxxxxxxxxxx>
<mailto:mikhail.kalkov@__purplescout.se
<mailto:mikhail.kalkov@xxxxxxxxxxxxxx>>
<mailto:mikhail.kalkov@
<mailto:mikhail.kalkov@>__purpl__escout.se <http://purplescout.se>
<mailto:mikhail.kalkov@__purplescout.se
<mailto:mikhail.kalkov@xxxxxxxxxxxxxx>>>>
wrote:
Hi Dirk,
I've used the way suggested in
http://blog.vogella.com/2010/____07/06/reading-resources-from-____plugin/
<http://blog.vogella.com/2010/__07/06/reading-resources-from-__plugin/>
<http://blog.vogella.com/2010/__07/06/reading-resources-from-__plugin/
<http://blog.vogella.com/2010/07/06/reading-resources-from-plugin/>>
to
read in XML files and also made sure that the xml/
directory is
present in build.properties/bin.includes list.
1. Loading XML
+ private MenuModel loadMenuModelFrom(String
testFileLocation) {
+ String fileUrlString = "platform:/plugin/" +
PLUGIN_ID +
testFileLocation;
+ InputStream inputStream = null;
+ try {
+ URL fileUrl = new URL(fileUrlString);
+ inputStream =
fileUrl.openConnection().____getInputStream();
+ } catch (MalformedURLException e) {
+ fail("The URL is invalid: " +
fileUrlString);
+ } catch (IOException e) {
+ // inputStream = null;
+ }
+ return new
XMLParser().readMenuModel(____inputStream);
}
2. Packaging XML with the binary
-> cat build.properties
source.. = src/
output.. = bin/
bin.includes = META-INF/,\
.,\
xml/
It works both from Tycho and from Eclipse.
Kind regards,
Mikhail Kalkov
Purple Scout AB
Software Developer
Address: Kyrkogatan 20-22, SE-41110 Gothenburg, Sweden
Phone: +46 (0) 732 - 051405
<tel:%2B46%20%280%29%20732%20-%20051405>
<tel:%2B46%20%280%29%20732%20-__%20051405>
<tel:%2B46%20%280%29%20732%20-____%20051405>
E-mail: mikhail.kalkov@xxxxxxxxxxxxxx
<mailto:mikhail.kalkov@xxxxxxxxxxxxxx>
<mailto:mikhail.kalkov@__purplescout.se
<mailto:mikhail.kalkov@xxxxxxxxxxxxxx>>
<mailto:mikhail.kalkov@
<mailto:mikhail.kalkov@>__purpl__escout.se <http://purplescout.se>
<mailto:mikhail.kalkov@__purplescout.se
<mailto:mikhail.kalkov@xxxxxxxxxxxxxx>>>
Web: www.purplescout.se
<http://www.purplescout.se> <http://www.purplescout.se>
<http://www.purplescout.se>
------------------------------____----------------------------__--__------------
*Från: *"Dirk Fauth" <dirk.fauth@xxxxxxxxx
<mailto:dirk.fauth@xxxxxxxxx>
<mailto:dirk.fauth@xxxxxxxxx <mailto:dirk.fauth@xxxxxxxxx>>
<mailto:dirk.fauth@xxxxxxxxx
<mailto:dirk.fauth@xxxxxxxxx> <mailto:dirk.fauth@xxxxxxxxx
<mailto:dirk.fauth@xxxxxxxxx>>>__>
*Till: *tycho-user@xxxxxxxxxxx
<mailto:tycho-user@xxxxxxxxxxx>
<mailto:tycho-user@xxxxxxxxxxx
<mailto:tycho-user@xxxxxxxxxxx>__>
<mailto:tycho-user@xxxxxxxxxxx <mailto:tycho-user@xxxxxxxxxxx>
<mailto:tycho-user@xxxxxxxxxxx
<mailto:tycho-user@xxxxxxxxxxx>__>__>
*Skickat: *torsdag, 5 sep 2013 16:48:58
*Ämne: *[tycho-user] getResource() in test cases
Hi,
I came across some strange behaviour when running
my test
cases with
tycho.
I have created an eclipse-test-plugin with using the
tycho-surefire-plugin
The tycho-surefire-plugin is configured to run a
test suite by
applying the arguments for testSuite and testClass.
My test cases need to load and process XML files
that are
provided
in the sources.
I tried two scenarios:
a) put the XML file relative to the test class and
load the
file via
<classname>.class.getResource(____)
b) put the XML file to src/test/resources and load via
this.getClass().getResource()
The first approach is some generic one, the second
is Maven
specific.
For a) I found the XML file in the compiled
target/classes
folder
respectively to the package it should be in.
For b) the XML file is located in target/test-classes.
So far everything is working as intended. If I run
my JUnit
test
from within Eclipse, everything works as expected
for both
scenarios. But when running the tests with Tycho,
in both
cases I
get errors saying "The given file does not exist!"
I've found the mailing list entry here
http://dev.eclipse.org/____mhonarc/lists/tycho-user/____msg04534.html
<http://dev.eclipse.org/__mhonarc/lists/tycho-user/__msg04534.html>
<http://dev.eclipse.org/__mhonarc/lists/tycho-user/__msg04534.html
<http://dev.eclipse.org/mhonarc/lists/tycho-user/msg04534.html>>
but it
doesn't contain a hint on a solution.
Is there any progress on that? Am I doing things
wrong to load
resources for my test cases? Is there a solution I
haven't
found
anywhere?
It would be great if you could give me some
feedback on that.
Greez,
Dirk
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