You can run all the tests in a class, by passing the `-Dtest=&lt;class&gt;` flag to Maven:

    mvn clean test -Dtest=xxxxTest

Since Surefire 2.8, you can also run an individual test, say a method `testA` within your unit tests, using the same flag:

    mvn clean test -Dtest=xxxxTest#testA

More examples for running multiple tests, by name pattern or name lists, can be found in the [Maven Surefire documentation &gt; Running a Single Test](http://maven.apache.org/surefire/maven-surefire-plugin/examples/single-test.html).


Please read this piece of the [maven surefire plugin manual][1]. Basically you can do the following:

    mvn -Dtest=*PerformanceTest clean test 

Which only runs all the test classes ending in PerformanceTest.


  [1]: http://maven.apache.org/plugins/maven-surefire-plugin/examples/single-test.html

+1 to the above answers, *and*... make sure you&#39;re in the same directory of the module where the test you&#39;re trying to run lives.
I ran into this issue, because I normally work in multi-module projects and run `mvn clean install` from the root of the project... but for this use case, you need to `cd` into the module of the test you&#39;re trying to run.

I have an array of subarrays in the following format:

    array
    (
        a =&gt; array ( id = 20, name = chimpanzee )
        b =&gt; array ( id = 40, name = meeting )
        c =&gt; array ( id = 20, name = dynasty )
        d =&gt; array ( id = 50, name = chocolate )
        e =&gt; array ( id = 10, name = bananas )
        f =&gt; array ( id = 50, name = fantasy )
        g =&gt; array ( id = 50, name = football )
    )

And I would like to group it into a new array based on the id field in each subarray.


    array
    (
        10 =&gt; array
              (
                e =&gt; array ( id = 10, name = bananas )
              )
        20 =&gt; array
              (
                a =&gt; array ( id = 20, name = chimpanzee )
                c =&gt; array ( id = 20, name = dynasty )
              )
        40 =&gt; array
              (
                b =&gt; array ( id = 40, name = meeting )
              )
        50 =&gt; array
              (
                d =&gt; array ( id = 50, name = chocolate )
                f =&gt; array ( id = 50, name = fantasy )
                g =&gt; array ( id = 50, name = football )
              )
    )

Group array by subarray values

I have a class (`SomeClass`) which contains a property `Name` of `string` type. And I need to store an array of that class and find its items by their names. For this purpose there are two types of collections: `KeyedCollection` and `Dictionary`. My question is: What difference between them and in such case It is better to use `KeyedCollection` and `Dictionary`? Thanks for any help in explanation.

Dictionary or KeyedCollection?

I have thousands of unit tests in my project, and I&#39;d like to choose one or a couple of them to run from the command line. What&#39;s the command to do that?

Using Maven, how do I run specific tests?

<p>I have thousands of unit tests in my project, and I'd like to choose one or a couple of them to run from the command line. What's the command to do that?</p>


I&#39;m looking at Selenium Server at the moment, and I don&#39;t seem to notice a driver that supports headless browser testing.

Unless I&#39;m mistaken, it doesn&#39;t support it.  If you&#39;re on X, you can create a virtual framebuffer to hide the browser window, but that&#39;s not really a headless browser.

Can anyone enlighten me?  Does Selenium support headless browser testing?

Does Selenium support headless browser testing?

I have some Junit unit tests that require a large amount of heap-space to run - i.e. 1G. (They test memory-intensive functionality for a webstart app that will only run with sufficient heap-space, and will be run internally on Win 7 64-bit machines - so redesigning the tests isn&#39;t a practical suggestion.)

I am developing in Intellij IDEA, so I know I can set the JVM parameters (e.g. -Xmx1024M) for the test class. However, this is only for running the whole test class - if I want to run an individual test, I have to recreate the run congfigurations for that test method. 

Also, those are IDE and box specific - so if I switch boxes (I develop on multiple machines) or one of my colleagues tries to run the tests, those settings are not transferred. (Also, other IDEs like Eclipse and NetBeans are used by my colleagues.) FWIW, we&#39;re using mercurial for source code control.

For the build cycle, we&#39;re using Maven, so I know how to specify the JVM parameters for that.

So:
- I&#39;m looking for a way of specifying the JVM parameters that will apply for the whole test class and the individual test methods; and
- I&#39;d like to share those specification across IDEs on any machine (having picked up the code from the repository).

How to set JVM parameters for Junit Unit Tests?

In setUp() method of unittest I&#39;ve setup some _self_ variables, which are later referenced in actual tests. I&#39;ve also created a decorator to do some logging. Is there a way in which I can access those _self_ variables from decorator?

For the sake of simplicity, I&#39;m posting this code:

    def decorator(func):
        def _decorator(*args, **kwargs):
            # access a from TestSample
            func(*args, **kwargs)
        return _decorator

    class TestSample(unittest.TestCase):    
        def setUp(self):
            self.a = 10

        def tearDown(self):
            # tear down code

        @decorator
        def test_a(self):
            # testing code goes here

What would be the best way of accessing _a_ (set in setUp()) from decorator?

Access self from decorator

I have a factory that returns a smart pointer. Regardless of what smart pointer I use, I can&#39;t get Google Mock to mock the factory method.

The mock object is the implementation of a pure abstract interface where all methods are virtual. I have a prototype:

    MOCK_METHOD0(Create, std::unique_ptr&lt;IMyObjectThing&gt;());

And I get:

    &quot;...gmock/gmock-spec-builders.h(1314): error C2248: &#39;std::unique_ptr&lt;_Ty&gt;::unique_ptr&#39; : cannot access private member declared in class &#39;std::unique_ptr&lt;_Ty&gt;&#39;&quot;

The type pointed to in the smart pointer is defined.

And I get it&#39;s trying to access one of the constructors declared private, but I don&#39;t understand why. When this was an std::auto_ptr&lt;T&gt;, the error said there was no copy constructor, which confuses me.

Anyway, is there a way to Mock a method that returns a smart pointer? Or is there a better way to build a factory? Is my only resolve to return a raw pointer (blech...)?

My environment is Visual Studio 2010 Ultimate and Windows 7. I&#39;m not using CLI.

Can Google Mock a method with a smart pointer return type?

I have a class that I&#39;m testing which has as a dependency another class (an instance of which gets passed to the CUT&#39;s init method).  I want to mock out this class using the Python Mock library.

What I have is something like:

    mockobj = Mock(spec=MyDependencyClass)
    mockobj.methodfromdepclass.return_value = &quot;the value I want the mock to return&quot;
    assertTrue(mockobj.methodfromdepclass(42), &quot;the value I want the mock to return&quot;)

    cutobj = ClassUnderTest(mockobj)

Which is fine, but &quot;methodfromdepclass&quot; is a parameterized method, and as such I want to create a single mock object where depending on what arguments are passed to methodfromdepclass it returns different values.  

The reason I want this parameterized behaviour is I want to create multiple instances of ClassUnderTest that contain different values (the values of which are produced by what gets returned from the mockobj).

Kinda what I&#39;m thinking (this of course does not work):

    mockobj = Mock(spec=MyDependencyClass)
    mockobj.methodfromdepclass.ifcalledwith(42).return_value = &quot;you called me with arg 42&quot;
    mockobj.methodfromdepclass.ifcalledwith(99).return_value = &quot;you called me with arg 99&quot;

    assertTrue(mockobj.methodfromdepclass(42), &quot;you called me with arg 42&quot;)
    assertTrue(mockobj.methodfromdepclass(99), &quot;you called me with arg 99&quot;)

    cutinst1 = ClassUnderTest(mockobj, 42)
    cutinst2 = ClassUnderTest(mockobj, 99)

    # now cutinst1 &amp; cutinst2 contain different values

How do I achieve this &quot;ifcalledwith&quot; kind of semantics?

Python Mock object with method called multiple times

    [ERROR] error: error reading C:\Users\suresh\.m2\repository\org\jdom\jdom\1.1\jdom-1.1.jar; error in opening zip file
    [ERROR] error: error reading C:\Users\suresh\.m2\repository\javax\servlet\servlet-api\2.5\servlet-api-2.5.jar; error in opening zip file
    [ERROR] error: error reading C:\Users\suresh\.m2\repository\org\apache\cxf\cxf-rt-bindings-http\2.2.1\cxf-rt-bindings-http-2.2.1.jar; error in opening zip file
    [ERROR] error: error reading C:\Users\suresh\.m2\repository\org\codehaus\jra\jra\1.0-alpha-4\jra-1.0-alpha-4.jar; error in opening zip file
    [ERROR] error: error reading C:\Users\suresh\.m2\repository\org\apache\cxf\cxf-api\2.2.1\cxf-api-2.2.1.jar; error in opening zip file
    [ERROR] error: error reading C:\Users\suresh\.m2\repository\org\apache\cxf\cxf-common-utilities\2.2.1\cxf-common-utilities-2.2.1.jar; error in opening zip file
    [INFO] 44 errors

How to resolve this error while running `mvn clean install`?

And I see that, starting from `servlet-api`, no packages are being created inside the local repository on my disk.

Maven : error in opening zip file when running maven

I have my maven project setup as 1 shell projects and 4 children modules. When I try to build the shell. I get:

    [INFO] Scanning for projects...
    [ERROR] The build could not read 1 project -&gt; [Help 1]
    [ERROR]   
    [ERROR] The project module1:1.0_A0 (C:\module1\pom.xml) has 1 error
    [ERROR] Non-resolvable parent POM: Failure to find shell:pom:1.0_A0 in http://nyhub1.ny.ssmb.com:8081/nexus/content/repositories/JBoss/ was cached in the local repository, resolution will not be reattempted until the update interval of jboss has elapsed or updates are forced and &#39;parent.relativePath&#39; points at wrong local POM @ line 5, column 11 -&gt; [Help 2]

If I try to build a lone module I get the same error only replace module1, with whatever module it was.

Have them all referencing the parent in their poms.

    &lt;parent&gt;
		&lt;artifactId&gt;shell&lt;/artifactId&gt;
		&lt;groupId&gt;converter&lt;/groupId&gt;
		&lt;version&gt;1.0_A0&lt;/version&gt;
	&lt;/parent&gt;

Here is the relevant parts of the shell pom:

    &lt;groupId&gt;converter&lt;/groupId&gt;
    &lt;artifactId&gt;shell&lt;/artifactId&gt;
    &lt;version&gt;1.0_A0&lt;/version&gt;
    &lt;packaging&gt;pom&lt;/packaging&gt;
    &lt;name&gt;shell&lt;/name&gt;


    &lt;modules&gt;
        &lt;module&gt;module1&lt;/module&gt;
  	    &lt;module&gt;module2&lt;/module&gt;
  	    &lt;module&gt;module3&lt;/module&gt;
  	    &lt;module&gt;module4&lt;/module&gt;
	&lt;/modules&gt;



Maven: Non-resolvable parent POM

I have a project on Bitbucket. Only the sources are committed. To retrieve the project onto a new machine, I used Version Control &gt; Checkout from Version Control from within IntelliJ.

It then asks whether I would like to create a new project from this source, to which I reply Yes. So far, so good. It creates a nice little Java project for me, consisting of a single module.

However, my goal in pulling this project into IntelliJ was to turn it into a Maven project. I cannot find any option anywhere that will let me do this!

Is there a way to have IntelliJ just generate a basic empty pom.xml for me, with a name and an artifactId and a repository? Or, is there a way to import the project as a Maven project in the first place? (Whenever I try to create a project from existing source, it only gives me the option of a Java project.)

IntelliJ - Convert a Java project/module into a Maven project/module

What&#39;s the recommended location for SQL, DDL, ... scripts in [the Maven standard directory structure][1]?

I bet almost every web project uses a DB and some kind of SQL scripts that need to be stored somewhere, so what would probably be the &quot;best&quot; place where to keep these files?

Please advise.

  [1]: http://maven.apache.org/guides/introduction/introduction-to-the-standard-directory-layout.html

What&#39;s the recommended location for SQL (DDL) scripts?

I was given a maven project to compile and get deployed on a tomcat server. I have never used maven before today, but I have been googling quite a bit. It seems like the top level `pom.xml` files in this project have the packaging type set as `pom`.

What am I supposed to do after `mvn install` to get this application deployed? I was expecting to be able to find a `war` file somewhere or something, but I guess I am looking in the wrong place or missing a step.

Content Type	Original Author	Original Content on Stackoverflow
Question	user84592	View Question on Stackoverflow
Solution 1 - Unit Testing	Vineet Reynolds	View Answer on Stackoverflow
Solution 2 - Unit Testing	Hiery Nomus	View Answer on Stackoverflow
Solution 3 - Unit Testing	Jake Toronto	View Answer on Stackoverflow

Using Maven, how do I run specific tests?

Unit Testing Problem Overview

Unit Testing Solutions

Solution 1 - Unit Testing

Solution 2 - Unit Testing

Solution 3 - Unit Testing

Dictionary or KeyedCollection?

Group array by subarray values

Attributions