Re: hard time to get GWTTestCase to work

2012-09-19 Thread Ajax
Anywhere you find yourself re-writing the same code more than three times, 
you would likely benefit from a generator.
Can you give some examples?  

- GWT.runAsync(); same boilerplate every time, but in order to work, each 
call must be behind a method of its own.
The lightweight dependency injection code I'm working on now wraps all this 
up behind a generated provider method.
It creates a RunAsyncCallback subclass for every marked async, and 
generates all the boilerplate to inject the implementation behind a code 
split.

To write by hand, you must, at the very least, implement the 
RunAsyncCallback class, plus some kind of sanity-check to avoid dupping the 
provided object.
Using a generator, it's a single line to annotate the target type, and a 
single method which takes an interface class and a callback to do DI + code 
split.


Another good example is DTO objects.  How many bean objects have you had to 
make just to pass around a couple strings and ints?
Using an interface + generator (like autobeans), you can just write out the 
type of data you want, and let the generator supply implementations on 
client (and server, if you're crafty).
One example I'm working on here is to present the client with raw JSOs to 
implement the interface, which translate directly to/from enhanced entities 
on the server which can access my datastore.
When I get my appengine virtualization layer finished, my DTO interfaces 
will also have .toEntity(), .fromEntity() methods, as well as .save() and 
.delete().

to/fromEntity() will be used mainly on the server to translate to datastore 
types, but also on the client to translate a statically typed object into a 
hash-bag object for use in CellWidgets.
.save() and .delete() will, on the client, call up (or queue up) requests 
to delete the entities on the server, and on the server, the objects will 
perform the actual deletions.
This way, I can help erase the client/server boundary.

Finally, and maybe most importantly, generators are great at spitting out 
boilerplate code.
If you have a specific procedure you must do (like un/marshalling data, or 
validating data), you will often find yourself writing, essentially the 
same code using different accessors for different objects.
These processes cannot be handled by a concrete class, unless you can 
implement accessor interfaces for every object (which you must still write 
by hand).
Instead, if you use a generator, you can just dream up any annotation to 
tell your code check this, throw X if !Y, and let the generator write the 
dirty details itself.
Not only does the generator remove messy, error-prone boilerplate, it also 
updates and adapts as your app changes;
if you change a field's requirements, you just have to update that field's 
annotation, rather than lookup every place that field is validated and 
update by hand.


Basically, anywhere you need to repeat a process, but cannot hide it behind 
a simple concrete abstraction layer, a generator will probably help.


 
And what is your experience concerning debugging?

For debugging, it can be frustrating if you just run compiles and check 
output.
Instead, I specify the -gen directory to point to a project where I have 
symlinked in all relevant code.
The generated folder is the only concrete source folder, and all other 
source is just linked in.

This way, any compile errors or warnings or mistakes in the generated code 
can be picked up immediately,
and I can trace through the generated code easily.

Obviously, if the generator fails and produces no output, you are going to 
have some headache.
This is where using a subclassed SourceWriter which can debug to console 
while working can help you pick out errors;
turn a debug flag on, and your console will spew out the generated classes 
as it writes them, so you can see where the errors are.

If you have the symlinked gen project, you can just copy+paste broken 
generated code into it, and see where the compile errors are immediately.
Were I a little more ambitious, I would have the subclasses SourceWriter 
print the generated code to console, to the generator, and to the gen-view 
project,
so a simply F5 in the gen project will immediately show all compile 
errors...
Though, I haven't hit any bugs bad enough that I couldn't fix just as 
easily with debugging output, and maybe java debugger for NPEs here and 
there. =}

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Re: hard time to get GWTTestCase to work

2012-09-18 Thread Ed Bras
Thanks

 Anywhere you find yourself re-writing the same code more than three times,
 you would likely benefit from a generator.

Can you give some examples?
And what is your experience concerning debugging?

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Re: hard time to get GWTTestCase to work

2012-09-17 Thread Ajax
Not everything can be tested with unit tests.

I write a lot of generator + linker code, so, by necessity, I must use 
GWTTestCase, as I am testing the compilation process.

If your tests don't involve the gwt generator, then definitely don't incur 
the overhead of GWTTestCase,
but if you are working in the generator layer, or if you want to test a 
functional gui in the browser, then you should use GWTTestCase.

It might be possible with selenium to achieve the in-browser tests, but you 
will likely need to run the gwt compile anyway,
so you might as well just use the testing suite provided. =}

On Sunday, September 16, 2012 3:49:38 PM UTC-6, Ed wrote:

 @ tanteanni :
 Easiest solution: don't use GWTTestCase... It simple doesn't work well and 
 if you have it working, it's hard to maintain...

 Try to do everything through unit testing...
 Nowedays I can test almost everything through unit tests, and works well. 
 Google around for awesome testing with IsWidget, 
 if I remember correctly, and you find some forum posts of me that might 
 help you in the correct direction...

 - Ed


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Re: hard time to get GWTTestCase to work

2012-09-17 Thread Ed
Just curious: where do you use your linker and generators for?
(I always tried to avoid them as much as possible, don't like hem).

Op maandag 17 september 2012 20:06:10 UTC+2 schreef Ajax het volgende:

 Not everything can be tested with unit tests.

 I write a lot of generator + linker code, so, by necessity, I must use 
 GWTTestCase, as I am testing the compilation process.

 If your tests don't involve the gwt generator, then definitely don't incur 
 the overhead of GWTTestCase,
 but if you are working in the generator layer, or if you want to test a 
 functional gui in the browser, then you should use GWTTestCase.

 It might be possible with selenium to achieve the in-browser tests, but 
 you will likely need to run the gwt compile anyway,
 so you might as well just use the testing suite provided. =}

 On Sunday, September 16, 2012 3:49:38 PM UTC-6, Ed wrote:

 @ tanteanni :
 Easiest solution: don't use GWTTestCase... It simple doesn't work well 
 and if you have it working, it's hard to maintain...

 Try to do everything through unit testing...
 Nowedays I can test almost everything through unit tests, and works well. 
 Google around for awesome testing with IsWidget, 
 if I remember correctly, and you find some forum posts of me that might 
 help you in the correct direction...

 - Ed



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Re: hard time to get GWTTestCase to work

2012-09-17 Thread Ajax
Anywhere you find yourself re-writing the same code more than three times, 
you would likely benefit from a generator.

Linkers are only useful if you need to translate java source into artifacts 
other than the embedded js.
For gadgets and files that require xml configurations, it may be more work 
up front to write a generator + linker combo, but it will save piles of 
frustration because your config file comes from your source code, rather 
than being edited by hand.

Currently, I'm doing a lot of work with creating my own cross-platform 
dependency injection framework (by implementing java.util.ServiceLoader for 
gwt).

The easy part was getting the generated javascript to work; the hard part 
was getting dev mode to work correctly, since it does not honor 
super-source overrides.


I prefer to work with interfaces and annotations as much as possible, and 
generators really help fill the gap without having to manually bind an 
interface to a factory or, even worse, just hardcoding an implementation.  

My next task for code generation will be to subclass java.lang.Thread and 
have it export a generated artifact to a web worker.

Rather than manually export multiple modules for the web workers and test 
them with trial, error and lots of recompiles,
I'm just going to write a generator which acts as a generic ThreadFactory, 
spits out a controller interface that will speak through to the web worker 
(or js object if web worker unavailable), and link the actual worker code 
into a separate js compile.  

This way, I can get the boilerplate right exactly once, and then reuse that 
boilerplate by calling GWT.create(GwtThread.class) any time I want to 
offload tasks to a web worker.

On Monday, September 17, 2012 3:11:38 PM UTC-6, Ed wrote:

 Just curious: where do you use your linker and generators for?
 (I always tried to avoid them as much as possible, don't like hem).

 Op maandag 17 september 2012 20:06:10 UTC+2 schreef Ajax het volgende:

 Not everything can be tested with unit tests.

 I write a lot of generator + linker code, so, by necessity, I must use 
 GWTTestCase, as I am testing the compilation process.

 If your tests don't involve the gwt generator, then definitely don't 
 incur the overhead of GWTTestCase,
 but if you are working in the generator layer, or if you want to test a 
 functional gui in the browser, then you should use GWTTestCase.

 It might be possible with selenium to achieve the in-browser tests, but 
 you will likely need to run the gwt compile anyway,
 so you might as well just use the testing suite provided. =}

 On Sunday, September 16, 2012 3:49:38 PM UTC-6, Ed wrote:

 @ tanteanni :
 Easiest solution: don't use GWTTestCase... It simple doesn't work well 
 and if you have it working, it's hard to maintain...

 Try to do everything through unit testing...
 Nowedays I can test almost everything through unit tests, and works 
 well. Google around for awesome testing with IsWidget, 
 if I remember correctly, and you find some forum posts of me that might 
 help you in the correct direction...

 - Ed



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Re: hard time to get GWTTestCase to work

2012-09-16 Thread Ajax
Your problem is that your test classpath does not include all required 
source, or your test class is not in a package explicitly included by your 
test .gwt.xml module file.

Please post your package / directory structure for the test class, the test 
gwt.xml, and possibly your maven build / execution configuration. 

On Friday, January 27, 2012 2:41:22 AM UTC-7, tanteanni wrote:

 i just tried my first GWTTestCase but it fails. My setup is Eclipse/Maven 
 (not the happiest couple on the planet) - the pom was initially generated 
 by gwt-tool (webappcreator?). I use MVP,gin, guice (testing views is not 
 #1 priority but i want it to work).
 Normal Unit-Tests work just fine. 
 But with GWTTestCase i got different kinds of trouble:
 if i try it with Eclipse' run as GWT  Test i got:

 com.google.gwt.junit.JUnitFatalLaunchException: The test class 
 'client.view.DynamicLayoutViewImplTest' was not found in module 
 '...integration'; no compilation unit for that type was seen
 at 
 com.google.gwt.junit.JUnitShell.checkTestClassInCurrentModule(JUnitShell.java:743)
 at com.google.gwt.junit.JUnitShell.runTestImpl(JUnitShell.java:1346)
 at com.google.gwt.junit.JUnitShell.runTestImpl(JUnitShell.java:1309)
 at com.google.gwt.junit.JUnitShell.runTest(JUnitShell.java:653)
 at com.google.gwt.junit.client.GWTTestCase.runTest(GWTTestCase.java:441)
 at junit.framework.TestCase.runBare(TestCase.java:134)
 at junit.framework.TestResult$1.protect(TestResult.java:110)
 at junit.framework.TestResult.runProtected(TestResult.java:128)
 at junit.framework.TestResult.run(TestResult.java:113)
 at junit.framework.TestCase.run(TestCase.java:124)
 at com.google.gwt.junit.client.GWTTestCase.run(GWTTestCase.java:296)
 at junit.framework.TestSuite.runTest(TestSuite.java:232)
 at junit.framework.TestSuite.run(TestSuite.java:227)
 at 
 org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:83)
 at 
 org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)
 at 
 org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
 at 
 org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
 at 
 org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
 at 
 org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
 at 
 org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

 (The Test is in same package as the view, the module used inherits the 
 normal module but it includes all permutations)

 If i run mvn test i got a much bigger exception: for some reasen the app 
 is deployed on jetty together with all server side stuff and i get an 
 guice-error!? mvn gwt:test does absolutly nothing. The first question is: 
 is this a source-code problem or a configuration problem or both? Here is 
 the source:

 public class DynamicLayoutViewImplTestGWT extends GWTTestCase {

 @Override
 public String getModuleName() {
 return ...Integration;
 }

 private DynamicLayoutViewImpl testObject;

 @Before
 public final void init() {
 AdbResources resources = GWT.create(AdbResources.class);
 testObject = new DynamicLayoutViewImpl(Unit.EM, resources);
 }

 @Test
 public final void testIt() {
 System.out.println(here);
 }

 }
 as you see i just tried to get an instance of my testobject. 

 thx in advance

 (i also tried gwt-test-utils is also failed)




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Re: hard time to get GWTTestCase to work

2012-09-16 Thread Ed
@ tanteanni :
Easiest solution: don't use GWTTestCase... It simple doesn't work well and 
if you have it working, it's hard to maintain...

Try to do everything through unit testing...
Nowedays I can test almost everything through unit tests, and works well. 
Google around for awesome testing with IsWidget, 
if I remember correctly, and you find some forum posts of me that might 
help you in the correct direction...

- Ed

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Re: hard time to get GWTTestCase to work

2012-02-07 Thread Steve Moyer
Actually when the error says the compilation unit is not found, it
means that the test runner isn't finding your compiled class. If you
look at the Source tab of your Java Build Path, I'll bet that you
have the Allow output folders for source folders checkbox checked.
Unchecking this will cause all compilation units to be put into
targets/classes (your test classes are currently in target/test-
classes and the test runner can't find them).  There are other ways to
solve this problems but this is the simplest.  It has the undesired (I
assume) side affect of including the test classes in your output jar
or war, so you have to exclude them during packaging.  The second
alternative is to make sure the target/test-classes folder is on your
classpath during testing.

On Jan 30, 10:43 am, salk31 sal...@gmail.com wrote:
 Sorry, I'm afraid I don't use maven

 On Jan 30, 7:31 am, tanteanni tantea...@hotmail.com wrote:







  thx, the problem is how to fix it. i have a maven project generated by
  webappcreator from google. i thought unit tests with gwttestcase should
  work out of the box?
  with sources not in classpath do you mean the eclipse way of sources
  (knowing were to look in debugging session, debugging normal tests is
  working fine)? Or do you mean the gwt-sources (declared in gwt.xml)? (i
  put all tests in same packages as the OUTs - that should be enough for gwt
  to find the sources?!)

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Re: hard time to get GWTTestCase to work

2012-01-30 Thread salk31
Sorry, I'm afraid I don't use maven


On Jan 30, 7:31 am, tanteanni tantea...@hotmail.com wrote:
 thx, the problem is how to fix it. i have a maven project generated by
 webappcreator from google. i thought unit tests with gwttestcase should
 work out of the box?
 with sources not in classpath do you mean the eclipse way of sources
 (knowing were to look in debugging session, debugging normal tests is
 working fine)? Or do you mean the gwt-sources (declared in gwt.xml)? (i
 put all tests in same packages as the OUTs - that should be enough for gwt
 to find the sources?!)

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Re: hard time to get GWTTestCase to work

2012-01-29 Thread tanteanni
thx, the problem is how to fix it. i have a maven project generated by 
webappcreator from google. i thought unit tests with gwttestcase should 
work out of the box? 
with sources not in classpath do you mean the eclipse way of sources 
(knowing were to look in debugging session, debugging normal tests is 
working fine)? Or do you mean the gwt-sources (declared in gwt.xml)? (i 
put all tests in same packages as the OUTs - that should be enough for gwt 
to find the sources?!)

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hard time to get GWTTestCase to work

2012-01-27 Thread tanteanni
i just tried my first GWTTestCase but it fails. My setup is Eclipse/Maven 
(not the happiest couple on the planet) - the pom was initially generated 
by gwt-tool (webappcreator?). I use MVP,gin, guice (testing views is not 
#1 priority but i want it to work).
Normal Unit-Tests work just fine. 
But with GWTTestCase i got different kinds of trouble:
if i try it with Eclipse' run as GWT  Test i got:

com.google.gwt.junit.JUnitFatalLaunchException: The test class 
'client.view.DynamicLayoutViewImplTest' was not found in module 
'...integration'; no compilation unit for that type was seen
at 
com.google.gwt.junit.JUnitShell.checkTestClassInCurrentModule(JUnitShell.java:743)
at com.google.gwt.junit.JUnitShell.runTestImpl(JUnitShell.java:1346)
at com.google.gwt.junit.JUnitShell.runTestImpl(JUnitShell.java:1309)
at com.google.gwt.junit.JUnitShell.runTest(JUnitShell.java:653)
at com.google.gwt.junit.client.GWTTestCase.runTest(GWTTestCase.java:441)
at junit.framework.TestCase.runBare(TestCase.java:134)
at junit.framework.TestResult$1.protect(TestResult.java:110)
at junit.framework.TestResult.runProtected(TestResult.java:128)
at junit.framework.TestResult.run(TestResult.java:113)
at junit.framework.TestCase.run(TestCase.java:124)
at com.google.gwt.junit.client.GWTTestCase.run(GWTTestCase.java:296)
at junit.framework.TestSuite.runTest(TestSuite.java:232)
at junit.framework.TestSuite.run(TestSuite.java:227)
at 
org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:83)
at 
org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)
at 
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at 
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at 
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at 
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at 
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

(The Test is in same package as the view, the module used inherits the 
normal module but it includes all permutations)

If i run mvn test i got a much bigger exception: for some reasen the app 
is deployed on jetty together with all server side stuff and i get an 
guice-error!? mvn gwt:test does absolutly nothing. The first question is: 
is this a source-code problem or a configuration problem or both? Here is 
the source:

public class DynamicLayoutViewImplTestGWT extends GWTTestCase {

@Override
public String getModuleName() {
return ...Integration;
}

private DynamicLayoutViewImpl testObject;

@Before
public final void init() {
AdbResources resources = GWT.create(AdbResources.class);
testObject = new DynamicLayoutViewImpl(Unit.EM, resources);
}

@Test
public final void testIt() {
System.out.println(here);
}

}
as you see i just tried to get an instance of my testobject. 

thx in advance

(i also tried gwt-test-utils is also failed)


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Re: hard time to get GWTTestCase to work

2012-01-27 Thread salk31
The usual problem is that your test sources are not in the
classpath... the first bit of the stack trace suggests that I think.

Cheers

Sam

On Jan 27, 9:41 am, tanteanni tantea...@hotmail.com wrote:
 i just tried my first GWTTestCase but it fails. My setup is Eclipse/Maven
 (not the happiest couple on the planet) - the pom was initially generated
 by gwt-tool (webappcreator?). I use MVP,gin, guice (testing views is not
 #1 priority but i want it to work).
 Normal Unit-Tests work just fine.
 But with GWTTestCase i got different kinds of trouble:
 if i try it with Eclipse' run as GWT  Test i got:

 com.google.gwt.junit.JUnitFatalLaunchException: The test class
 'client.view.DynamicLayoutViewImplTest' was not found in module
 '...integration'; no compilation unit for that type was seen
 at
 com.google.gwt.junit.JUnitShell.checkTestClassInCurrentModule(JUnitShell.ja 
 va:743)
 at com.google.gwt.junit.JUnitShell.runTestImpl(JUnitShell.java:1346)
 at com.google.gwt.junit.JUnitShell.runTestImpl(JUnitShell.java:1309)
 at com.google.gwt.junit.JUnitShell.runTest(JUnitShell.java:653)
 at com.google.gwt.junit.client.GWTTestCase.runTest(GWTTestCase.java:441)
 at junit.framework.TestCase.runBare(TestCase.java:134)
 at junit.framework.TestResult$1.protect(TestResult.java:110)
 at junit.framework.TestResult.runProtected(TestResult.java:128)
 at junit.framework.TestResult.run(TestResult.java:113)
 at junit.framework.TestCase.run(TestCase.java:124)
 at com.google.gwt.junit.client.GWTTestCase.run(GWTTestCase.java:296)
 at junit.framework.TestSuite.runTest(TestSuite.java:232)
 at junit.framework.TestSuite.run(TestSuite.java:227)
 at
 org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:8 3)
 at
 org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestRe 
 ference.java:49)
 at
 org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java: 
 38)
 at
 org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestR 
 unner.java:467)
 at
 org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestR 
 unner.java:683)
 at
 org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner 
 .java:390)
 at
 org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunne 
 r.java:197)

 (The Test is in same package as the view, the module used inherits the
 normal module but it includes all permutations)

 If i run mvn test i got a much bigger exception: for some reasen the app
 is deployed on jetty together with all server side stuff and i get an
 guice-error!? mvn gwt:test does absolutly nothing. The first question is:
 is this a source-code problem or a configuration problem or both? Here is
 the source:

 public class DynamicLayoutViewImplTestGWT extends GWTTestCase {

     @Override
     public String getModuleName() {
         return ...Integration;
     }

     private DynamicLayoutViewImpl testObject;

     @Before
     public final void init() {
         AdbResources resources = GWT.create(AdbResources.class);
         testObject = new DynamicLayoutViewImpl(Unit.EM, resources);
     }

     @Test
     public final void testIt() {
         System.out.println(here);
     }

 }

 as you see i just tried to get an instance of my testobject.

 thx in advance

 (i also tried gwt-test-utils is also failed)

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