new gradle format confusion and migrating causes Could not find method testCompile() - gradle

Question

I have a build.gradle with
plugins {
id {some plugin for all projects}
id "com.diffplug.spotless" version "5.1.1"
}
AND THEN I have an allprojects {} section that defines ONE apply plugin: 'jacoco' and a subprojects {} section that declares apply plugin: 'java' with a few others
Immediately adding spotless messed with stuff and errors out that it cannot find the java plugin so then I modify ALL plugins to be in the plugins section like so
plugins {
id "java"
id "checkstyle"
id "eclipse"
id "idea"
id "jacoco"
id "com.diffplug.spotless" version "5.1.1"
id "com.dorongold.task-tree" version "1.5" //This prints out a task tree (pretty print)
}
This then results in this error
Could not find method testCompile() for arguments [junit:junit:4.11] on object of type org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler.
So for some reason the java plugin is lost. I can't figure out the right combination here to migrate everything to this new plugins section format.
How do I do that? I randomly tried putting a plugins section in allprojects and subprojects but that results in this new error
Could not find method plugins() for arguments [build_d8c2jgy4ua1m0vkv9kmvgefmc$_run_closure2$_closure5#62337fda] on root project 'providersvc-all' of type org.gradle.api.Project
How does this new plugins section work? I can't seem to migrate without it breaking everything. I just want java plugin, testCompile, and spotless to play nicely together right now
EDIT(forgot to attach the full trimmed down file that does not work):
plugins {
id "java"
id "com.diffplug.spotless" version "5.1.1"
}
ext {
//dependency versions every project usees so we version in one location all jars(less jar hell this way)
deps = [
'junit': 'junit:junit:4.11'
]
}
allprojects {
repositories {
jcenter()
mavenCentral()
maven {
//webpieces VERSIONED snapshots so you can lock on a snapshot
url "https://dl.bintray.com/deanhiller/maven"
}
//For testing locally
maven {
url uri('/tmp/myRepo/')
}
}
}
subprojects {
dependencies {
testCompile deps['junit']
}
}
thanks,
Dean

Answer 1

You are only applying the plugins to the root project - not the sub-projects. However, if you like to configure plugins through the subprojects configuration, you have to use the apply plugin syntax. But you don't have to use the old buildscript block for configuring the classpath and repositories if you a combination of the two.
Here is an example. I am assuming the root project is not a Java project. I have also removed your comments and inserted mine instead for the sole reason to make them easier to spot.
plugins {
id "com.diffplug.spotless" version "5.1.1" apply false // <-- Set "apply false" here
// This makes it configure which version to use on the classpath for the entire build, but without applying it.
// Notice that the Java plugin is not specified here anymore.
// This is because it is a core plugin so you can't set the version (and I am assuming you don't want it on in the root project).
}
ext {
deps = [
'junit': 'junit:junit:4.11'
]
}
allprojects {
repositories {
jcenter()
mavenCentral() // <-- You can remove this if you want as it is already present as a proxy in jcenter().
maven {
url "https://dl.bintray.com/deanhiller/maven"
}
maven {
url uri('/tmp/myRepo/')
}
}
}
subprojects {
// Here are the two plugins
apply plugin: "java"
apply plugin: "com.diffplug.spotless"
dependencies {
testImplementation deps['junit'] // <-- testCompile renamed to testImplementation as the former has been deprecated for a long time
}
}