JacocoPluginExtension::applyTo can not be called from Kotlin

[JLLeitschuh]

Expected Behavior

Ability to call:

jacoco {
    applyTo(tasks.matching { name == "junitPlatformTest" } as TaskCollection<*>)
}

OR:

jacoco {
    applyTo(tasks.matching { name == "junitPlatformTest" })
}

OR:

jacoco {
    applyTo(tasks.getByName("junitPlatformTest") as Task)
}

OR:

jacoco {
    applyTo(tasks.getByName("junitPlatformTest"))
}

This same problem exists even if you try wrapping the method names in backticks.

Current Behavior

When calling the applyTo with the signature <T extends Task & JavaForkOptions> void applyTo(TaskCollection tasks):

e: /Users/jonathanleitschuh/personal/git/shuffleboard/build.gradle.kts:102:13: Type inference failed: Not enough information to infer parameter T in fun <T : Task!> applyTo(tasks: TaskCollection<(raw) Task!>!): Unit where T : JavaForkOptions!
Please specify it explicitly.

When calling the applyTo with the signature <T extends Task & JavaForkOptions> void applyTo(final T task):

> Configure project :
e: /Users/jonathanleitschuh/personal/git/shuffleboard/build.gradle.kts:102:13: None of the following functions can be called with the arguments supplied: 
public open fun <T : Task!> applyTo(task: (???..???)): Unit where T : JavaForkOptions! defined in org.gradle.testing.jacoco.plugins.JacocoPluginExtension
public open fun <T : Task!> applyTo(tasks: TaskCollection<(raw) Task!>!): Unit where T : JavaForkOptions! defined in org.gradle.testing.jacoco.plugins.JacocoPluginExtension
Latest annotated tag is null. This does not match the expected version number pattern.

Context

I'm trying to configure Jacoco to run with Junit 5

Steps to Reproduce (for bugs)

See above.

Your Environment

• Build scan URL:

Gradle version: 4.1.

[JLLeitschuh]

This is the workaround code that I'm using and I know works:

/**
 * Workaround fix for calling [org.gradle.testing.jacoco.plugins.JacocoPluginExtension.applyTo]
 *
 * [Issue details here](https://github.com/gradle/kotlin-dsl/issues/458)
 */
fun org.gradle.testing.jacoco.plugins.JacocoPluginExtension.applyToHelper(task : Task) {
    val method = this::class.java.getMethod("applyTo", Task::class.java)
    method.invoke(this, task)
}

[JLLeitschuh]

I think that this has been resolved? Not entirely sure. Are you waiting to close this until after there is a Gradle release with this fix?

[JLLeitschuh]

In hindsight, this may have simply been my problem, not an issue with the compiler.
However, the type on the collection is wrong.

In my original example this didn't work which is sane because of the compiler:

jacoco {
    applyTo(tasks.getByName("junitPlatformTest") as Task)
}

This, on the other hand does work:

jacoco {
    applyTo(tasks.getByName("junitPlatformTest") as JavaExec)
}

Similarly, this didn't work:

jacoco {
    applyTo(tasks.matching { name == "junitPlatformTest" } as TaskCollection<*>)
}

But this does work:

jacoco {
    applyTo<JavaExec>(tasks.matching { name == "junitPlatformTest" })
}

The API in Gradle did need to be updated though. So we did the right thing there.

[eskatos]

Thanks @JLLeitschuh for following up!

The Gradle API has not seen any recent changes wrt this issue. I believe it already worked as described in your last comment.

Closing

[bamboo]

@eskatos there is a related change pending on Gradle that I intended to follow up on: gradle/gradle@40d0906

[eskatos]

Fixed in upstream Gradle by gradle/gradle@f8f8618

Closing