How to use MicroProfile ConfigProperty injection from a microprofile-config.properties file in Open Liberty test using ShrinkWrap + Arquillian? - jboss-arquillian

Question

Problem
I added a microprofile-config.properties file to the Liberty "Testing microservices with the Arquillian managed container" guide sample, but my microprofile-config.properties isn't picked up by my test.
Symptom
> Exception : io.smallrye.config.inject.ConfigException: SRCFG02000:
> Failed to Inject #ConfigProperty for key serviceName into
> io.openliberty.guides.system.AppConfig.serviceName since the config
> property could not be found in any config source at
> io.smallrye.config.inject.ConfigExtension.validate(ConfigExtension.java:183)
> at
> io.openliberty.microprofile.config.internal.extension.OLSmallRyeConfigExtension.validate(OLSmallRyeConfigExtension.java:65)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> ...
Starting point
git clone https://github.com/openliberty/guide-arquillian-managed.git; cd finish
microprofile-config.properties
Path: src/main/resources/META-INF/microprofile-config.properties
serviceName=myService
Bean to inject into: AppConfig.java
#ApplicationScoped
public class AppConfig {
#Inject #ConfigProperty(name="serviceName")
private String serviceName;
...
}
Liberty server config (server.xml)
<featureManager>
<feature>restfulWS-3.0</feature>
<feature>jsonb-2.0</feature>
<feature>jsonp-2.0</feature>
<feature>cdi-3.0</feature>
<feature>mpConfig-3.0</feature>
<!--Enable the following features to run tests with Arquillian managed container-->
<feature>localConnector-1.0</feature>
<feature>servlet-5.0</feature>
</featureManager>

Answer 1

You need to specifically package the microprofile-config.properties file in the ShrinkWrap package like:
.addAsManifestResource(new File("src/main/resources/META-INF", "microprofile-config.properties"))
More completely in the context of this sample it would look like:
WebArchive archive = ShrinkWrap.create(WebArchive.class, WARNAME)
.addAsManifestResource(new File("src/main/resources/META-INF", "microprofile-config.properties"))
.addPackages(true, "io.openliberty.guides.system");
Explanation:
Since the sample uses ShrinkWrap to package the application test deployment, the microprofile-config.properties must be programmatically added to the ShrinkWrap deployment. It doesn't become part of the package by virtue of being in src/main/resources (like it becomes part of a standard Maven WAR package built by the maven-war-plugin).