Set project.group system property for tests

Expose the project's group to test JVMs by configuring tasks.withType<Test>() to set systemProperty("project.group", group ?: "org.processing"). Update ProcessingPluginTest to read the plugin id from System.getProperty("project.group") instead of hardcoding the group. Also close the publishing block in build.gradle.kts. This allows tests to adapt when the project group is overridden.

Author: Stefterv

java/gradle/build.gradle.kts

@@ -43,4 +43,8 @@ publishing{
             url = uri(project(":app").layout.buildDirectory.dir("resources-bundled/common/repository").get().asFile.absolutePath)
         }
     }
+}
+
+tasks.withType<Test>().configureEach {
+    systemProperty("project.group", group ?: "org.processing")
 }

java/gradle/src/test/kotlin/ProcessingPluginTest.kt

@@ -20,7 +20,7 @@ class ProcessingPluginTest{
         val sketchFolder = directory.newFolder("sketch")
         directory.newFile("sketch/build.gradle.kts").writeText("""
             plugins {
-                id("org.processing.java")
+                id("${System.getProperty("project.group")}.java")
             }
         """.trimIndent())
         directory.newFile("sketch/settings.gradle.kts")