Puzzled: I added a new test case function to a junit test. I run the entire class from either Eclipse or from maven, and the old case (there was only one before) runs and the new one does not. It doesn't fail. A breakpoint in it is not hit. The new function has an #Test annotation, just like the old one.
Junit version is 4.5.
Is there a way to get junit to log or trace its thought process in selecting functions to run?
I guess you still ran old class file, as new Java file was not be compiled successfully.
You could modify an old test method to see if the class is really modified: to let successful method to fail.
Related
I'm trying to write a test that needs both Robolectric 2.2 and PowerMock, as the code under test depends on some Android libraries and third party libraries with final classes that I need to mock.
Given that I'm forced to use the Robolectric test runner through:
#RunWith(RobolectricTestRunner.class)
...I cannot use the PowerMock test runner, so I'm trying to go with the PowerMock java agent alternative, without luck so far.
I have setup everything according to this guide but I'm facing a collision problem between classes required by the javaagent library and by robolectric through its dependency with asm-1.4. Both depend on
org.objectweb.asm.ClassVisitor
, but javaagent-1.5.1 ships with its own version where ClassVisitor is an interface while asm-1.4 version for the same namespace is an abstract class, with the corresponding error at runtime:
java.lang.IncompatibleClassChangeError: class org.objectweb.asm.tree.ClassNode has interface org.objectweb.asm.ClassVisitor as super class
I have even tried to modify the javaagent library jar to entirely remove the org.objectew.asm classes in there, but that doesn't work as ClassNotFoundException happens afterwards due to some other classes needed in the org.objectweb.asm package that only ship in the javaagent library jar, and not in the asm one.
Any ideas? According to examples out there the agent seems to work fine with, at least, the Spring test runner.
I had the same problem and while I didn't solve this problem as such, I wanted to share my approach, which removes the need for PowerMock (which is always a good thing in my view): I wanted to mock a call to
Fragment fooFragment = new FooFragment();
So what I did was addanother level of indirection. I created a FragmentProvider class:
public FragmentFactory fragmentFactory = new FragmentFactory();
[...]
Fragment fooFragment = fragmentFactory.getFooFragment();
After i did this, I could just mock out the factory with standard Mockito, like this:
FragmentFactory mockFactory = mock(FragmentFactory.class);
activity.fragmentFactory = mockFactory;
when(mockFactory.getFooFragment()).thenReturn(mockFooFragment);
I have several Spock test classes grouped together in a package. I am using Junit 4.10. Each test class contains several feature test methods.
I want to perform some setup steps (such as loading data into a DB, starting up a web server) before I run any test case, but only once when the testing starts.
I want this "OneTimeSetup" method to be called only once whether:
I run all the test classes in the package (for example if they are grouped in a Test Suite)
I run a few test classes
I run only one test class
I run only a certain feature method within a test class
From reading other posts on SO, it seems that this is what TestNG's #BeforeSuite does.
I am aware of Spock's setupSpec() and cleanupSpec() methods, but they only work within a given test class. I am looking to do something like "setupTestSuite()." How can this be achieved in Spock?
You can write a global extension, use a JUnit test suite, call a static method in a helper class (say from setupSpec) that does its work just once, or let the build tool do the job.
I have ported my code to the RTM version of both WinRT and Rx. I use ReactiveUI in my ViewModels. Before porting the code my unit tests were running without problem but now I got a strange behavior.
Here the test:
var sut = new MyViewModel();
myViewModel.MyCommand.Execute(null) //ReactiveAsyncCommand
Assert.AreEqaul(0, sut.Collection.Count)
If I debug the test step by step, the assertion is not failing, but using the test runner it's failing...
The Collection asserted is modified by a method subscribing to the command:
MyCommand.RegisterAsyncTask(_ => DoWork())
.ObserveOn(SynchronizationContext.Current)
.Subscribe(MethodModifyingCollection);
The code was working before moving it to the RTM. I tried also to remove the ObserveOn and add an await Task.Delay() before the Assert without success.
Steven's got the rightish answer, but there are a few RxUI specific things missing. This is definitely related to scheduling in a test runner, but the reason is that the WinRT version of ReactiveUI can't detect properly whether it's in a test runner at the moment.
The dumb workaround for now is to set this at the top of all your tests:
RxApp.DeferredScheduler = Scheduler.CurrentThread;
Do not use the TestScheduler for every test, it's overkill and actually isn't compatible with certain kinds of testing. TestScheduler is good for tests where you're simulating time passing.
Your problem is that MSTest unit tests have a default SynchronizationContext. So ObserveOn and ReactiveAsyncCommand will marshal to the thread pool instead of to the WPF context. This causes a race condition.
Your first and best option is the Rx TestScheduler.
Another option is to await some completion signal (and ensure your test method is async Task, not async void).
Otherwise, if you just need a SynchronizationContext, you can use AsyncContext from my AsyncEx library to execute the tests within your own SynchronizationContext.
Finally, if you have any code that directly uses Dispatcher instead of SynchronizationContext, you can use WpfContext from the Async CTP download.
I have a test suite and a number of test in there own class files. These are selenium webdriver tests. Each test needs to start the webdriver before they start. How should this be done?
I can have the suite start the webdriver fine from its #BeforeClass. But when i try to run a single test from eclipse the webdriver doesnt start. The tests dont know that they are part of the suite and should run the suites #BeforeClass.
The single Tests would only run the #BeforeClass of the suite if their class extends the suite.
Due to the fact that that's a senseless relationship I think the solution for your Problem is either to define a BeforeClass in something like a TestFunctions.java file as Superclass for all Testclasses or create BeforeClasses for every single Testclass.
Keep in mind that the #BeforeClass and #Before Annotations of the superclass are executed before the #Before(Class) of the subclass but can be overridden.
Without looking into JUnit source itself (my next step) is there an easy way to set the default Runner to be used with every test without having to set #RunWith on every test? We've got a huge pile of unit tests, and I want to be able to add some support across the board without having to change every file.
Ideally I'm hope for something like: -Djunit.runner="com.example.foo".
I don't think this is possible to define globally, but if writing you own main function is an option, you can do something similar through code. You can create a custom RunnerBuilder and pass it to a Suite together with your test classes.
Class<?>[] testClasses = { TestFoo.class, TestBar.class, ... };
RunnerBuilder runnerBuilder = new RunnerBuilder() {
#Override
public Runner runnerForClass(Class<?> testClass) throws Throwable {
return new MyCustomRunner(testClass);
}
};
new JUnitCore().run(new Suite(runnerBuilder, testClasses));
This won't integrate with UI test runners like the one in Eclipse, but for some automated testing scenarios it could be an option.
JUnit doesn’t supporting setting the runner globally. You can hide away the #RunWith in a base class, but this probably won't help in your situation.
Depending on what you want to achieve, you might be able to influence the test behavior globally by using a custom RunListener. Here is how to configure it with the Maven Surefire plugin: http://maven.apache.org/plugins/maven-surefire-plugin/examples/junit.html#Using_custom_listeners_and_reporters