Demonstration project
It has parent root module and two submodules: core and http(depends on core)
For kotlin I use kotlin-maven-plugin
Problem is http tests can't see kotlin classes from core tests.
In this example I want to use abstract integration test class from core in http tests.
My maven config:
parent pom.xml: https://github.com/vatrubin/kotlin-submodules-demo/blob/master/pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://maven.apache.org/POM/4.0.0"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>parent</artifactId>
<groupId>ru.vatrubin</groupId>
<version>1.0-SNAPSHOT</version>
<packaging>pom</packaging>
<name>parent</name>
<modules>
<module>core</module>
<module>http</module>
</modules>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<kotlin.code.style>official</kotlin.code.style>
<kotlin.compiler.jvmTarget>11</kotlin.compiler.jvmTarget>
<java.version>11</java.version>
<spring-boot.version>2.3.4.RELEASE</spring-boot.version>
</properties>
<repositories>
<repository>
<id>mavenCentral</id>
<url>https://repo1.maven.org/maven2/</url>
</repository>
</repositories>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>ru.vatrubin</groupId>
<artifactId>core</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>ru.vatrubin</groupId>
<artifactId>http</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>org.jetbrains.kotlin</groupId>
<artifactId>kotlin-test-junit</artifactId>
<version>1.4.10</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.jetbrains.kotlin</groupId>
<artifactId>kotlin-stdlib</artifactId>
<version>1.4.10</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>${spring-boot.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.jetbrains.kotlin</groupId>
<artifactId>kotlin-maven-plugin</artifactId>
<version>1.4.10</version>
<executions>
<execution>
<id>compile</id>
<phase>compile</phase>
<goals>
<goal>compile</goal>
</goals>
<configuration>
<sourceDirs>
<source>src/main/java</source>
<source>src/main/kotlin</source>
</sourceDirs>
</configuration>
</execution>
<execution>
<id>test-compile</id>
<phase>test-compile</phase>
<goals>
<goal>test-compile</goal>
</goals>
<configuration>
<sourceDirs>
<source>src/test/java</source>
<source>src/test/kotlin</source>
</sourceDirs>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
core pom.xml: https://github.com/vatrubin/kotlin-submodules-demo/blob/master/core/pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://maven.apache.org/POM/4.0.0"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<artifactId>parent</artifactId>
<groupId>ru.vatrubin</groupId>
<version>1.0-SNAPSHOT</version>
<relativePath>..</relativePath>
</parent>
<artifactId>core</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>core</name>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.jetbrains.kotlin</groupId>
<artifactId>kotlin-test-junit</artifactId>
</dependency>
<dependency>
<groupId>org.jetbrains.kotlin</groupId>
<artifactId>kotlin-stdlib</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.jetbrains.kotlin</groupId>
<artifactId>kotlin-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
http pom.xml: https://github.com/vatrubin/kotlin-submodules-demo/blob/master/http/pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://maven.apache.org/POM/4.0.0"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<artifactId>parent</artifactId>
<groupId>ru.vatrubin</groupId>
<version>1.0-SNAPSHOT</version>
<relativePath>..</relativePath>
</parent>
<artifactId>http</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>http</name>
<repositories>
<repository>
<id>mavenCentral</id>
<url>https://repo1.maven.org/maven2/</url>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>ru.vatrubin</groupId>
<artifactId>core</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.jetbrains.kotlin</groupId>
<artifactId>kotlin-stdlib</artifactId>
</dependency>
</dependencies>
<build>
<sourceDirectory>src/main/kotlin</sourceDirectory>
<testSourceDirectory>src/test/kotlin</testSourceDirectory>
<plugins>
<plugin>
<groupId>org.jetbrains.kotlin</groupId>
<artifactId>kotlin-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
Classes
IntegrationTestAbstract
package ru.vatrubin.kotlinMavenDemo
import org.springframework.boot.autoconfigure.EnableAutoConfiguration
import org.springframework.context.annotation.ComponentScan
import org.springframework.context.annotation.Configuration
abstract class IntegrationTestAbstract {
companion object {
//prepare db
const val SOME_CONSTANT = "test"
}
}
@Configuration
@ComponentScan("ru.vatrubin.**")
@EnableAutoConfiguration
open class IntegrationTestConfig
SimpleHttpTest
package ru.vatrubin.kotlinMavenDemo
import org.junit.Assert
import org.junit.Test
import org.junit.runner.RunWith
import org.springframework.boot.test.context.SpringBootTest
import org.springframework.test.context.junit4.SpringRunner
@SpringBootTest(classes = [IntegrationTestConfig::class], webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
@RunWith(SpringRunner::class)
class SimpleHttpTest : IntegrationTestAbstract() {
@Test
fun `some http test`() {
Assert.assertEquals(SOME_CONSTANT, SOME_CONSTANT)
}
}
Errors during mvn verify
...
Error: Failed to execute goal org.jetbrains.kotlin:kotlin-maven-plugin:1.4.10:test-compile (test-compile) on project http: Compilation failure: Compilation failure:
Error: /home/runner/work/kotlin-submodules-demo/kotlin-submodules-demo/http/src/test/kotlin/ru/vatrubin/kotlinMavenDemo/SimpleHttpTest.kt:[9,27] Only 'const val' can be used in constant expressions
Error: /home/runner/work/kotlin-submodules-demo/kotlin-submodules-demo/http/src/test/kotlin/ru/vatrubin/kotlinMavenDemo/SimpleHttpTest.kt:[9,28] Unresolved reference: IntegrationTestConfig
Error: /home/runner/work/kotlin-submodules-demo/kotlin-submodules-demo/http/src/test/kotlin/ru/vatrubin/kotlinMavenDemo/SimpleHttpTest.kt:[9,28] An annotation argument must be a compile-time constant
Error: /home/runner/work/kotlin-submodules-demo/kotlin-submodules-demo/http/src/test/kotlin/ru/vatrubin/kotlinMavenDemo/SimpleHttpTest.kt:[11,24] Unresolved reference: IntegrationTestAbstract
Error: /home/runner/work/kotlin-submodules-demo/kotlin-submodules-demo/http/src/test/kotlin/ru/vatrubin/kotlinMavenDemo/SimpleHttpTest.kt:[15,29] Unresolved reference: SOME_CONSTANT
Error: /home/runner/work/kotlin-submodules-demo/kotlin-submodules-demo/http/src/test/kotlin/ru/vatrubin/kotlinMavenDemo/SimpleHttpTest.kt:[15,44] Unresolved reference: SOME_CONSTANT
...
What's wrong?!
Found similar issue: Creating a multi module project with maven spring and kotlin get unresolved reference
