Where to place generated sources in order to make them visible for testCompile goal?

maven-compiler-plugin:testCompile gets sources from ./src/test/java. How can I instruct it to use sou开发者_运维技巧rces from ./target/generated-sources/test as well?

Maybe they should be placed somewhere else to become visible for testCompile goal?

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Ideally, the plugin generating these sources should configure the source folders for the compiler plugin. When these are not generated by a maven plugin, you can use the build-helper plugin to add additional folders. See the second example here.