CODEWITHSUNDEEP
javamavenmoduleintegration-testingmaven-plugin
Michal Kordas
Michal Kordas

Reputation: 10925

Integration testing of Maven Plugin submodule

I have Maven project with multiple submodules. One of these submodules, let's say submodule X depends on all other submodules, as it is Maven Plugin that integrates everything else.

Now I want to use this Maven Plugin during verify stage in my parent POM to do real run of it over entire project (kind of eating own dogfood).

Unfortunatelly I'm getting error:

The projects in the reactor contain a cyclic reference

So how can I make such dogfood integration test for a Maven Plugin submodule?

Upvotes: 0

Views: 294

Answers (2)

BValluri
BValluri

Reputation: 956

Small suggestion from my side. Cyclic means you have some transitive dependency in your modules. Can please check the dependency tree of your modules and resolve the circular dependency first.

Upvotes: 0

A_Di-Matteo
A_Di-Matteo

Reputation: 27812

I would review aggregation and inheritance: they are indeed two different concepts in Maven often used in combination but which can however be used in a complete separated manner as well.

In this case, your plugin submodule is certainly defined as a module in the aggregator pom (that is, it is a submodule). But I also presume the plugin submodule also has as parent pom the aggregator pom as well (that is, the aggregator pom is also the parent pom, which is a normal approach, but not always required).

Is the latter required? You could keep on having the multi-module/aggregator approach without necessarely having the aggregator as parent of the plugin submodule. As such, the plugin subModule would still be a module of the aggregator pom but it would not have as a parent the aggregator pom, decoupling it from it and as such breaking the cyclic dependencies.

Possible drawback: in the aggregator pom you were also defining common things (dependencies management, properties) required also in the plugin submodule. If the case, you would then need to duplicate/review these common settings only for the concerned submodule.

Upvotes: 1

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