Java / Maven - copy embedded in-test resource files to target

<?xml version="1.0" encoding="UTF-8" standalone="no"?>

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

    ...

    <build>

        ...

        <plugins>

            ...

            <plugin>

                <groupId>org.apache.maven.plugins</groupId>

                <artifactId>maven-antrun-plugin</artifactId>

                <version>3.1.0</version>

                <executions>

                    <execution>

                        <phase>generate-sources</phase>

                        <configuration>

                            <target>

                                <mkdir dir="${pom.basedir}/target/test-classes" />

                                <copy todir="${pom.basedir}/target/test-classes">

                                    <fileset dir="${pom.basedir}/test" includes="**/*.txt" />

                                </copy>

                            </target>

                        </configuration>

                        <goals>

                            <goal>run</goal>

                        </goals>

                    </execution>

                </executions>

            </plugin>

            ...

        </plugins>

    </build>

</project>