# Creating a Maven Integration Test

In the past, tests were numbered sequentially (it001,it002, etc). This becomes problematic because it's not always obvious what the issue is related to the test. More importantly, it's hard to create and submit sequential tests via patches because non-committers have no way to reserve the next number. This leads to extra work to apply the patch.

New tests should be named using the JIRA issue id along with a meaningful name. This name should typically be the subject of the issue or a subset. It should be informative of the issue but not excessively long. Therefore a good name would be: MavenITmng1234groupIdOrderIsBackwardsTest. The corresponding resource directory for this test in core-it-suite/src/test/resources/ would simply be named mng-1234, i.e. without the description to keep the path short.

### Sample IT Project

A sample project has been created to aid in IT test creation. It can be retrieved using Subversion from our source repository or directly viewed with your browser via our SVN view.

### Sample IT Archetype

This project has also been converted into an archetype to make it even easier to use.

It would be helpful to review the archetype plugin documentation here: http://maven.apache.org/plugins/maven-archetype-plugin/

The Archetype Plugin doesn't currently know about this archetype, so we created a catalog file to be used.

mvn archetype:generate -DarchetypeCatalog=http://docs.codehaus.org/download/attachments/1835439/archetype-catalog.xml

$mvn archetype:generate -DarchetypeCatalog=http://docs.codehaus.org/download/attachments/1835439/archetype-catalog.xml [INFO] Scanning for projects... [INFO] Searching repository for plugin with prefix: 'archetype'. [INFO] ------------------------------------------------------------------------ [INFO] Building Maven Default Project [INFO] task-segment: [archetype:generate] (aggregator-style) [INFO] ------------------------------------------------------------------------ [INFO] Preparing archetype:generate [INFO] No goals needed for project - skipping [INFO] Setting property: classpath.resource.loader.class => 'org.codehaus.plexus.velocity.ContextClassLoaderResourceLoader'. [INFO] Setting property: velocimacro.messages.on => 'false'. [INFO] Setting property: resource.loader => 'classpath'. [INFO] Setting property: resource.manager.logwhenfound => 'false'. [INFO] [archetype:generate] Choose archetype: 1: remote -> maven-it-sample-archetype (Archetype for creating a Maven 2 Integration Test) Choose a number: (1): 1 [INFO] snapshot org.apache.maven.its:maven-it-sample-archetype:1.0-SNAPSHOT: checking for updates from maven-it-sample-archetype-repo Downloading: http://people.apache.org/repo/m2-snapshot-repository/org/apache/maven/its/maven-it-sample-archetype/1.0-SNAPSHOT/maven-it-sample-archetype-1.0-20080303.190914-2.jar 9K downloaded Define value for groupId: : org.apache.maven.its Define value for artifactId: : my-it Define value for version: : 1 Define value for package: : org.apache.maven.it Confirm properties configuration: groupId: org.apache.maven.its artifactId: my-it version: 1 package: org.apache.maven.it Y: : Y [WARNING] org.apache.velocity.runtime.exception.ReferenceException: reference : template = archetype-resources/src/test/resources/mng-xxxx-descriptionOfProblem/checkstyle-test/pom.xml [line 42,column 26] :${project.build.directory} is not a valid reference.
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESSFUL
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 44 seconds
[INFO] Finished at: Mon Mar 03 19:13:41 GMT 2008
[INFO] Final Memory: 10M/28M
[INFO] ------------------------------------------------------------------------



The project will be created in a subfolder of your current directory with the name you chose for the artifact. (my-it in the above example).

### Tour of the Sample Project

The sample IT project contains the following files:

|   pom.xml
|
\---src
\---test
+---java
|   \---org
|       \---apache
|           \---maven
|               \---it
|                     |   MavenITmngXXXXDescriptionOfProblemTest.java
|
\---resources
\---mng-xxxx
|   pom.xml
|
+---checkstyle-assembly
|   |   pom.xml
|   |
|   +---src
|      \---main
|          \---resources
|                  rule_set.xml
|                  stc_checks.xml
|
|
|
\---checkstyle-test
|   pom.xml
|
\---src
\---main
\---java
Class.java



The directory src/test/java/ contains a junit file used to execute the sample project. It is heavily commented to guide you along. Stop here and Take a look before continuing.

The directory src/test/resources contains a sample project tree that will be invoked to test our condition. The sample consists of a few modules, first an extension (checkstyle-assembly) that is jarred up and installed into the repository. Then a second invocation is made on a project that uses the extension (checkstyle-test)

The sample IT project uses the simplest method of using the verifier, that is the sample build fails if the test should fail. More complicated ITs can be created with beanshell scripts to check complex conditions. (Example Needed) (Link to verifier docs)

Once your IT is complete, you should be able to execute it:

>mvn test
[INFO] Scanning for projects...
[INFO] ----------------------------------------------------------------------------
[INFO] Building Maven Integration Tests
[INFO] ----------------------------------------------------------------------------
[INFO] [resources:resources]
[INFO] Using default encoding to copy filtered resources.
[INFO] [compiler:compile]
[INFO] No sources to compile
[INFO] [resources:testResources]
[INFO] Using default encoding to copy filtered resources.
[INFO] [compiler:testCompile]
[INFO] Compiling 1 source file to E:\svn\Maven\maven-it-tests\test\artifact\target\test-classes
[INFO] [surefire:test]
[INFO] Surefire report directory: E:\svn\Maven\maven-it-tests\test\artifact\target\surefire-reports

-------------------------------------------------------
T E S T S
-------------------------------------------------------
Running org.apache.maven.it.MavenITmngXXXXDescriptionOfProblemTest
mngXXXXDescriptionOfProblem(testitMNGxxxx).. OK
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 16.802 sec

Results :

Tests run: 1, Failures: 0, Errors: 0, Skipped: 0
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESSFUL
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 25 seconds
[INFO] Finished at: Wed Aug 08 22:47:44 EDT 2007
[INFO] Final Memory: 4M/10M
[INFO] ------------------------------------------------------------------------


Now that your IT is complete, create a zip, tgz or some other *normal* archive of your test and attach it to your JIRA issue.

If you are a Maven committer, read the next section to see how to integrate your test into the core, or to apply someone else's test.

### Integrating an IT into the core-integration-tests

First, check out the core-it-suite

The sample project maps directly to the core-it-suite structure. Assuming the test has been named uniquely, you can copy the contents of src/test directly over to core-it-suite (don't copy from the root or you'll overwrite the POM).

/cygdrive/e/svn/Maven/maven-it-tests/core-it-suite
$cp ../test/artifact/src . -R -v ../test/artifact/src/test/java/org/apache/maven/it/MavenITmngXXXXDescriptionOfProblemTest.java' -> ./src/test/java/org/apache/maven/it/MavenITmngXXXXDescriptionOfProblemTest.java' ../test/artifact/src/test/resources/mng-xxxx/checkstyle-assembly/pom.xml' -> ./src/test/resources/mng-xxxx/checkstyle-assembly/pom.xml' ../test/artifact/src/test/resources/mng-xxxx/checkstyle-assembly/src/main/resources/rule_set.xml' -> ./src/test/resources/mng-xxxx/checkstyle-assembly/src/main/resources/rule_set.xml' ../test/artifact/src/test/resources/mng-xxxx/checkstyle-assembly/src/main/resources/stc_checks.xml' -> ./src/test/resources/mng-xxxx/checkstyle-assembly/src/main/resources/stc_checks.xml' ../test/artifact/src/test/resources/mng-xxxx/checkstyle-assembly/target/classes/rule_set.xml' -> ./src/test/resources/mng-xxxx/checkstyle-assembly/target/classes/rule_set.xml' ../test/artifact/src/test/resources/mng-xxxx/checkstyle-assembly/target/classes/stc_checks.xml' -> ./src/test/resources/mng-xxxx/checkstyle-assembly/target/classes/stc_checks.xml' ../test/artifact/src/test/resources/mng-xxxx/checkstyle-test/pom.xml' -> ./src/test/resources/mng-xxxx/checkstyle-test/pom.xml' ../test/artifact/src/test/resources/mng-xxxx/checkstyle-test/src/main/java/Class.java' -> ./src/test/resources/mng-xxxx/checkstyle-test/src/main/java/Class.java' ../test/artifact/src/test/resources/mng-xxxx/pom.xml' -> ./src/test/resources/mng-xxxx/pom.xml' ../test/artifact/src/test/resources/mng-xxxx/readme.txt' -> ./src/test/resources/mng-xxxx/readme.txt'  Now add your test to the test suite by adding a new line to src\test\java\org\apache\maven\it\IntegrationTestSuite.java  suite.addTestSuite( MavenITmngXXXXDescriptionOfProblemTest.class );  Now run the suite: brianf@sonoma /cygdrive/e/svn/Maven/maven-it-tests/core-it-suite$ mvn test
[INFO] Scanning for projects...
[INFO] ----------------------------------------------------------------------------
[INFO] Building Maven Integration Tests
[INFO] ----------------------------------------------------------------------------
[INFO] [resources:resources]
[INFO] Using default encoding to copy filtered resources.
[INFO] [compiler:compile]
[INFO] No sources to compile
[INFO] [resources:testResources]
[INFO] Using default encoding to copy filtered resources.
[INFO] [compiler:testCompile]
[INFO] Compiling 124 source files to e:\svn\Maven\maven-it-tests\core-it-suite\target\test-classes
[INFO] [surefire:test]
[INFO] Surefire report directory: e:\svn\Maven\maven-it-tests\core-it-suite\target\surefire-reports
Running integration tests for Maven 2.0.7

-------------------------------------------------------
T E S T S
-------------------------------------------------------
Running org.apache.maven.it.IntegrationTestSuite
Running integration tests for Maven 2.0.7
0000(testit0000).. Ok
....
got get some coffee, it's gonna be a while
....
MavenITmngXXXXDescriptionOfProblemTest...OK    <-- our test...yeah!

Tests run: 115, Failures: 22, Errors: 3, Skipped: 0, Time elapsed: 534.241 sec <<< FAILURE!

Results :

Failed tests:
testit0002(org.apache.maven.it.MavenIT0002Test)

Tests in error:
testit0086(org.apache.maven.it.MavenIT0086Test)
testit0087(org.apache.maven.it.MavenIT0087Test)
testit0104(org.apache.maven.it.MavenIT0104Test)

Tests run: 115, Failures: 22, Errors: 3, Skipped: 0

[INFO] ------------------------------------------------------------------------
[ERROR] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] There are test failures.
[INFO] ------------------------------------------------------------------------