1. by Holasz Kati & Ilies Amelia
MAVEN
SureFire vs. FailSafe
2. by Holasz Kati & Ilies Amelia
Contents
Running tests in parallel................................................................................................................. 3
Skipping Tests ................................................................................................................................ 3
Inclusions and Exclusions of Tests............................................................................................... 4
Inclusions .................................................................................................................................... 4
Exclusions.................................................................................................................................... 4
Running a Single Test.................................................................................................................... 5
Running a set of methods in a Single Test Class.......................................................................... 5
Install Plugin.................................................................................................................................. 6
The install:install-file goal.......................................................................................................... 6
QUESTIONS….............................................................................................................................. 7
How To Include Custom Library Into Maven Local Repository?............................................... 7
How To Add Remote Repository In Maven? ............................................................................... 7
How To Display Maven Plugin Goals And Parameters? ........................................................... 8
Useful Explanations....................................................................................................................... 9
Unit Testing................................................................................................................................. 9
Integration Testing...................................................................................................................... 9
Mojo ............................................................................................................................................ 9
Plug-in......................................................................................................................................... 9
Build Lifecycle........................................................................................................................... 10
References .................................................................................................................................... 11
3. by Holasz Kati & Ilies Amelia
Running tests in parallel
To do this, you must set the parallel parameter, and may change the threadCount or
useUnlimitedThreads attribute. For example:
<plugins>
[...]
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.16</version>
<configuration>
<parallel>methods</parallel>
<threadCount>10</threadCount>
</configuration>
</plugin>
[...]
</plugins>
Skipping Tests
To skip running the tests for a particular project, set the skipTests property to true.
<project>
[...]
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.16</version>
<configuration>
<skipTests>true</skipTests>
</configuration>
</plugin>
</plugins>
</build>
[...]
4. by Holasz Kati & Ilies Amelia
</project>
You can also skip the tests via command line by executing the following command:
mvn install -DskipTests
Inclusions and Exclusions of Tests
Inclusions
By default, the Surefire Plugin will automatically include all test classes with the following wildcard
patterns: "**/Test*.java" , “**/*Test.java", "**/*TestCase.java".
<project>
[...]
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.16</version>
<configuration>
<includes>
<include>Sample.java</include>
</includes>
</configuration>
</plugin>
</plugins>
</build>
[...]
</project>
Exclusions
Exclusions can be done by configuring the excludes property of the plugin.
<project>
[...]
<build>
<plugins>
5. by Holasz Kati & Ilies Amelia
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.16</version>
<configuration>
<excludes>
<exclude>**/TestCircle.java</exclude>
<exclude>**/TestSquare.java</exclude>
</excludes>
</configuration>
</plugin>
</plugins>
</build>
[...]
</project>
Running a Single Test
To run this through Maven, set the test property to a specific test case.
mvn -Dtest=TestCircle test
You may also use patterns to run a number of tests:
mvn -Dtest=TestCi*le test
And you may use multiple names/patterns, separated by commas:
mvn -Dtest=TestSquare,TestCi*le test
Running a set of methods in a Single Test Class
You must use the following syntax
mvn -Dtest=TestCircle#mytest test
You can use patterns too
mvn -Dtest=TestCircle#test* test
As of surefire 2.12.1, you can select multiple methods:
6. by Holasz Kati & Ilies Amelia
mvn -Dtest=TestCircle#testOne+testTwo test
Install Plugin
With the maven-install-plugin you can put your artifacts in the local repository.
The install:install-file goal
The install:install-file goal is used primarily for installing artifacts to the local repository
which were not built by Maven. The project's development team may or may not
provide a POM for the artifact. Here's a list of some of the available parameters for
the install-file goal:
mvn install:install-file -Dfile=your-artifact-1.0.jar
[-DpomFile=your-pom.xml]
[-Dsources=src.jar]
[-Djavadoc=apidocs.jar]
[-DgroupId=org.some.group]
[-DartifactId=your-artifact]
[-Dversion=1.0]
[-Dpackaging=jar]
[-Dclassifier=sources]
[-DgeneratePom=true]
[-DcreateChecksum=true]
the groupId, artifactId, version and packaging of the file to install. These can be taken
from the specified pomFile, extracted from the pom.xml inside the artifact, and
overridden or specified using the command line. When the pomFile contains
a parent section, the parent's groupId can be considered if the groupId is not specified
further for the current project or on the command line.
Ex:
mvn -X install:install-file
-Dfile=path/to/mly/jar
-DgroupId=j<groupname>
-DartifactId=<artifactname>
-Dversion=<version>
-Dpackaging=jar
7. by Holasz Kati & Ilies Amelia
QUESTIONS…
How To Include Custom Library Into Maven Local Repository?
For example, kaptcha, a popular third party Java library, which is used to generate “captcha”
image to stop spam, but it’s not available in the Maven center repository.
In this tutorial, we will show you how to install the “kaptcha” jar into your Maven’s local
repository.
mvn install
Download the “kaptcha“, extract it and copy the kapcha-version.jar to somewhere else, for
example, c drive. Issue following command:
mvn install:install-file -Dfile=c:kaptcha-{version}.jar
-DgroupId=com.google.code
-DartifactId=kaptcha
-Dversion={version}
-Dpackaging=jar
pom.xml
o declare the kaptcha coordinate in pom.xml.
<dependency>
<groupId>com.google.code</groupId>
<artifactId>kaptcha</artifactId>
<version>2.3</version>
</dependency>
Done
Build it, now the “kaptcha” jar is able to retrieve from your Maven local repository.
How To Add Remote Repository In Maven?
By default, Maven download all dependencies from Maven Central Repository. But, some
libraries are missing in central repository, and only available in remote repository.
8. by Holasz Kati & Ilies Amelia
Ex: Java.net Repository
Add Java.net remote repository details in pom.xml file.
<project ...>
<repositories>
<repository>
<id>java.net</id>
<url>https://maven.java.net/content/repositories/public/</url>
</repository>
</repositories>
</project>
How To Display Maven Plugin Goals And Parameters?
mvn help:describe -Dplugin=eclipse
List all of the available goals of maven-eclipse plugin.
mvn help:describe -Dplugin=eclipse
mvn help:describe -Dplugin=eclipse -Dmojo=eclipse
Display the detail of “eclipse” parameter of maven-eclipse plugin, with full explanation.
mvn help:describe -Dplugin=eclipse -Dmojo=eclipse -Dfull=true
Note : “mojo” is means the parameter of plugin.
9. by Holasz Kati & Ilies Amelia
Useful Explanations
Unit Testing
The primary goal of unit testing is to take the smallest piece of testable software in the
application, isolate it from the remainder of the code, and determine whether it behaves
exactly as you expect. Each unit is tested separately before integrating them into modules
to test the interfaces between modules.
Integration Testing
Integration testing is a logical extension of unit testing. In its simplest form, two units
that have already been tested are combined into a component and the interface between
them is tested.
The idea is to test combinations of pieces and eventually expand the process to test your
modules with those of other groups. Eventually all the modules making up a process are
tested together. Beyond that, if the program is composed of more than one process, they
should be tested in pairs rather than all at once.
Integration testing identifies problems that occur when units are combined. By using a
test plan that requires you to test each unit and ensure the viability of each before
combining units, you know that any errors discovered when combining units are likely
related to the interface between units. This method reduces the number of possibilities to
a far simpler level of analysis.
It occurs after unit testing and before validation testing.
Mojo
A Mojo is really just a goal in Maven 2, and plug-ins consist of any number of goals
(Mojos). Mojos can be defined as annotated Java classes or Beanshell script. A Mojo
specifies metadata about a goal: a goal name, which phase of the lifecycle it fits into, and
the parameters it is expecting.
MOJO is a play on POJO (Plain-old-Java-object), substituting "Maven" for "Plain".
Plug-in
"Maven" is really just a core framework for a collection of Maven Plugins. In other
words, plugins are where much of the real action is performed, plugins are used to: create
jar files, create war files, compile code, unit test code, create project documentation, and
on and on. Almost any action that you can think of performing on a project is
implemented as a Maven plugin.
Plugins are the central feature of Maven that allow for the reuse of common build logic
across multiple projects. They do this by executing an "action" (i.e. creating a WAR file
or compiling unit tests) in the context of a project's description - the Project Object Model
10. by Holasz Kati & Ilies Amelia
(POM). Plugin behavior can be customized through a set of unique parameters which are
exposed by a description of each plugin goal (or Mojo).
Build Lifecycle
is a series of common stages through which all project builds naturally progress. Plugin
goals are bound to specific stages in the lifecycle.
