Automating Integration Tests with WebSphere Liberty and Maven

I spent some hours to figure out how to deploy my webapp to the Liberty from my Maven project.

I looked into the feature restConnector-1.0 . restConnector provides a REST based JMX MBeans interface to WebSphere Liberty.  You add  <feature>restConnector-1.0</feature> to your server, and make sure you have a user set in the admin role.


You need to add write access for the administrator-role user.  You’ll need to specify a relative path (use the Liberty Directory Locations) or use the absolute path (it’s a bit more complicated).


You can login and see the various APIs [ https://localhost:9443/IBMJMXConnectorREST/api ] or check the documentation [API1][API2][MBean]  .  You’ll want to check any upload with https://localhost:9443/IBMJMXConnectorREST/file/status

I used it with maven-antrun-plugin to execute against curl.

 <target name="post-war-to-server" unless="maven.test.skip">
 <!-- Remove War File from the Server -->
 <exec executable="curl">
 line="-u 'admin:dmin' -H 'Content-Type: application/war' -X DELETE 'https://localhost:9443/IBMJMXConnectorREST/file/%24%7Bserver.output.dir%7D%2Fdropins%2Ftransformation.war?recursiveDelete=true' 
 --insecure -v" />
 <!-- Should check that this is a 204 -->
 <!-- Post the War file to the Server -->
 <!-- Expand the War file on the Server -->
 <exec executable="curl">
 line="-u 'admin:admin' -H 'Content-Type: application/war' -X POST 'https://localhost:9443/IBMJMXConnectorREST/file/%24%7Bserver.output.dir%7D%2Fdropins%2Ftransformation.war?expandOnCompletion=true' 
 --data-binary '@target/example.war' --insecure -v" />


Execute maven with mvn clean integration-test package in order to trigger the deployment during the integration-test.

Hamcrest Matchers Issue

I’ve been using Rest-Assured as a simple Integration Test tool for the last few months, and suddenly I started seeing this issue.

java.lang.SecurityException: class "org.hamcrest.Matchers"'s signer information does not match signer information of other classes in the same package
at java.lang.ClassLoader.checkCerts(
at java.lang.ClassLoader.preDefineClass(
at java.lang.ClassLoader.defineClass(
at Method)
at java.lang.ClassLoader.loadClass(
at sun.misc.Launcher$AppClassLoader.loadClass(
at java.lang.ClassLoader.loadClass(
at com.test.restassured.TestCode.testaCreateTenant(
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(
at sun.reflect.DelegatingMethodAccessorImpl.invoke(
at java.lang.reflect.Method.invoke(
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(
at org.junit.runners.model.FrameworkMethod.invokeExplosively(
at org.junit.internal.runners.statements.InvokeMethod.evaluate(
at org.junit.internal.runners.statements.RunBefores.evaluate(
at org.junit.runners.ParentRunner.runLeaf(
at org.junit.runners.BlockJUnit4ClassRunner.runChild(
at org.junit.runners.BlockJUnit4ClassRunner.runChild(
at org.junit.runners.ParentRunner$
at org.junit.runners.ParentRunner$1.schedule(
at org.junit.runners.ParentRunner.runChildren(
at org.junit.runners.ParentRunner.access$000(
at org.junit.runners.ParentRunner$2.evaluate(
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(

I wiped my .m2 repository of org.hamcrest.Matchers jar files, and rebuilt the maven repository (mvn clean package install -DskipTests).   The problem remained.

I ran across a simple for my code (on the rest-assured site thanks to johanhaleby)

I changed the code to

import static org.hamcrest.CoreMatchers.equalsTo;

Now the code passes the tests without a problem

Localized Maven Repositories – A Hot Tip

I’ve been building a Maven Project that uses some jar files which are not in Maven Central (or any repository). I ran across this article – Local Maven Dependencies. I found it very helpful.

Simply, do the following:

create a directory (d:/folder/repo)

Run a maven deploy to url (it’ll create the repository details based on the flags)

mvn deploy:deploy-file -Durl=file://d:/folder/repo/ -Dfile=Common.jar -DgroupId=xyz -DartifactId=Common -Dpackaging=jar -Dversion=1.0

and add to your Maven Project’s POM
<id>Local Repository</id>

Then reference your jar file with a new dependency.

The code should almost write itself from there 🙂

Maven Tips

Here are some tips for Maven Java Projects in Eclipse.

#1 If you pom.xml is missing maven-compiler-plugin, Eclipse (when you do Maven > Update Project), defaults the compiler level for the project to 1.5.


Now, it gets even more tricky… if your project has defined features that are from Java 1.6, 1.7 or 1.8

#2 if you your web.xml defines a version not compatible with a project facet you depend on, you get a lot of problems/errors

<web-app xmlns:xsi="" xmlns="" xmlns:web="" xsi:schemaLocation="" id="WebApp_ID" version="2.5"/>

Convert the web.xml to 3.1, and compatibility should now be fixed

<web-app id="WebApp_ID" version="3.1" xmlns="" xmlns:xsi="" xsi:schemaLocation="">

I found this stackoverflow entry helpful and this one.

#3 Update > Maven Project overwrites manual changes to #1/#2.

I found this stackoverflow entry helpful.

#4 Make sure you don’t have two web.xml files… the convert dynamic web project to maven project does some funky stuff.

Social API – Tag Patterns and other optimization thoughts

Generally, I find developers implementing scenarios, such as “As a User, I need to iterate over X Social API, so I can find the right content.”  The scenario implies that the social metadata is included, however many developers iterate over the entries in the feeds to discover the Tag metadata.  If you read the documentation parameters, you can find optimizations to include metadata in the feed request, such as:


boolean Yes Specifies whether or not the tags that are displayed on the file welcome page are included in the returned Atom document. This parameter takes a Boolean value of either true or false. By default, the tags are not returned.

The URL Parameter that reduces the total number of requests needed. For instance, the request for a each of the 10 entries in a feed, and then the tags for those 10 entries appears to require 11 API calls with the includeTags=true it can be accomplished in one request.

You can also optimize the request by manipulating the page size – 1,10 or 25.

In some cases, you can further optimize with batch requests when creating content. Example, the Activities API enables batch deletes of Members or the OpenSocial ActivityStream API which enables batch creation of updates.