Multiproject build: dependency to tests jar

Question

I'm restructuring/refactoring build process for a big(ish) project. Currently it contains over a dozen separate modules built with standalone build scripts each. I want to integrate them all into a single multiproject build in Gradle.

After I integrated all sources into a single tree, fixed build.gradles, I came upon the following problem. Dependencies for many modules contain something like:

dependencies {
    compile group: 'com.company', name: 'Module', version: '1.2.3'
    // ...
    testCompile group: 'com.company', name: 'Module', version: '1.2.3', classifier: 'tests'
}

I want the build to use jars from the subproject, not from a repository. I replaced compile ... with compile project(':Module') and it works fine. However, I cannot find the way to pass 'tests' specifier to the testCompile project... dependency.

Is there a way to pick up the tests jar as a dependency to testCompile?

Wait ... Do you have test code in project A that depends on test code in project B? That sounds a bit unusual. Assuming that we're talking about unit tests, they would normally be highly local. — Jolta
– Jolta, Commented Jul 4, 2016 at 15:15
Well... Yes. I inherited a project in a really sorry state. Project B has some test utilities that unit tests in Project A depend on. — Tomo
– Tomo, Commented Jul 5, 2016 at 0:12

Benjamin Muschko · Accepted Answer · 2016-07-05 16:22:23Z

1

In the producing project you will need to declare the "Test" JAR as outgoing artifact.

configurations {
    testUtils
}

task testUtilsJar(type: Jar) {
    ...
}

artifacts {
    testUtils testUtilsJar
}

In the consuming project you depend on it as such:

dependencies {
    testCompile project(path: ':Module', configuration: 'testUtils')
}

answered Jul 5, 2016 at 16:22

Benjamin Muschko

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