Why doesn't IntelliJ Idea find Maven dependencies from another Kotlin module?

Question

Imagine I have two Maven-based projects with Kotlin code, prjA and prjB.

Test class SomeTest in prjA references a class and function defined in prjB:

class SomeTest {
    @Test
    fun prjACanReferencePrjBStuff() {
        val valRes = ValidationResult()
        val correctValRes = createCorrectValidationResult()
    }
}

When I

run mvn clean install in prjB,
update the dependencies of prjA in IntelliJ Idea and
run mvn clean install in prjA,

I get errors - Maven can't find the classes defined in prjB:

Why? How can I fix it?

Notes:

Kotlin classes are publicly visible by default. I don't get any errors during mvn install of prjB.
The Maven repository contains prjB artifacts and IntelliJ Idea references the right Maven repository.
When I try to build prjA from the command line, the build succeeds.
Invalidating IntelliJ Idea cache and rebuilding the project doesn't help.

Update 1: I need a solution, which allows me to use prjB not only in tests.

Update 2: Everything works perfectly fine, if I rewrite Kotlin classes in prjB in Java.

Make a multi module build from it and define the appropriate dependencies between them. — khmarbaise
– khmarbaise, Commented Jun 1, 2016 at 9:00

Community · Accepted Answer · 2017-05-23 12:15:57Z

1

If you need regular classes from prjB, add main dependency to prjA. If you need test classes from prjB, add test dependency to prjA.

To add main dependency to another module:

<project>
  ...
  <dependencies>
    <dependency>
      <groupId>com.your.group</groupId>
      <artifactId>prjB</artifactId>
      <version>1.0-SNAPSHOT</version>
    </dependency>
  </dependencies>
  ...
</project>

To add test dependency to another module:

<project>
  ...
  <dependencies>
    <dependency>
      <groupId>com.your.group</groupId>
      <artifactId>prjB</artifactId>
      <version>1.0-SNAPSHOT</version>
      <type>test-jar</type>
      <scope>test</scope>
    </dependency>
  </dependencies>
  ...
</project>

Here is an example on test dependency.

edited May 23, 2017 at 12:15

CommunityBot

11 silver badge

answered Jun 1, 2016 at 5:06

Abylay Sabirgaliyev

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4 Comments

Glory to Russia Over a year ago

See my update 1. I need to find a way to use prjB not only in tests, but in the normal code as well. Will you proposal work in this case?

morpheus05 Over a year ago

See the first code snippet of doge, this will set a 'normal' dependency.

Glory to Russia Over a year ago

How is the dependency from your first code snippet different from the dependency on prjB in my example ?

Abylay Sabirgaliyev Over a year ago

@DmitriPisarenko then it's problem in the IDE. Check this

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