add test to verify that root project contacts are used in subproject POMs

build.gradle

@@ -262,3 +262,11 @@ gradlePlugin {
 tasks.withType(Test).configureEach {
     maxParallelForks = Runtime.runtime.availableProcessors().intdiv(2) ?: 1
 }
+
+testing {
+    suites {
+        test {
+            useJUnitJupiter()
+        }
+    }
+}

gradle.lockfile

@@ -60,6 +60,10 @@ org.jfrog.buildinfo:build-info-extractor-gradle:6.0.2=integTestCompileClasspath,
 org.jfrog.buildinfo:build-info-extractor:2.41.22=integTestCompileClasspath,integTestRuntimeClasspath,testCompileClasspath,testRuntimeClasspath
 org.jfrog.filespecs:file-specs-java:1.1.2=integTestCompileClasspath,integTestRuntimeClasspath,testCompileClasspath,testRuntimeClasspath
 org.jspecify:jspecify:1.0.0=integTestCompileClasspath,integTestRuntimeClasspath,testCompileClasspath,testRuntimeClasspath
+org.junit.jupiter:junit-jupiter-api:5.12.2=integTestCompileClasspath,integTestRuntimeClasspath,testCompileClasspath,testRuntimeClasspath
+org.junit.jupiter:junit-jupiter-engine:5.12.2=integTestRuntimeClasspath,testRuntimeClasspath
+org.junit.jupiter:junit-jupiter-params:5.12.2=integTestCompileClasspath,integTestRuntimeClasspath,testCompileClasspath,testRuntimeClasspath
+org.junit.jupiter:junit-jupiter:5.12.2=integTestCompileClasspath,integTestRuntimeClasspath,testCompileClasspath,testRuntimeClasspath
 org.junit.platform:junit-platform-commons:1.14.0=integTestCompileClasspath,integTestRuntimeClasspath,testCompileClasspath,testRuntimeClasspath
 org.junit.platform:junit-platform-engine:1.14.0=integTestCompileClasspath,integTestRuntimeClasspath,testCompileClasspath,testRuntimeClasspath
 org.junit.platform:junit-platform-launcher:1.14.0=integTestCompileClasspath,integTestRuntimeClasspath,testCompileClasspath,testRuntimeClasspath

src/test/groovy/nebula/plugin/publishing/maven/MavenDeveloperPluginTest.groovy

@@ -0,0 +1,53 @@
+package nebula.plugin.publishing.maven
+
+import groovy.xml.XmlSlurper
+import nebula.test.dsl.GroovyTestProjectBuilder
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.io.TempDir
+
+import static nebula.test.dsl.TestKitAssertions.assertThat
+
+class MavenDeveloperPluginTest {
+    @TempDir
+    File projectDir
+
+    @Test
+    void test_multiproject() {
+        def runner = GroovyTestProjectBuilder.testProject(projectDir) {
+            rootProject {
+                plugins {
+                    id("com.netflix.nebula.contacts")
+                }
+                rawBuildScript("""
+contacts {
+    'nebula@example.test' {
+        moniker 'Example Nebula'
+        github 'nebula-plugins'
+    }
+}
+""")
+            }
+            subProject("sub1") {
+                plugins {
+                    id("java")
+                    id("com.netflix.nebula.contacts")
+                    id 'com.netflix.nebula.maven-developer'
+                    id 'com.netflix.nebula.maven-nebula-publish'
+                }
+            }
+        }
+
+        def result = runner.run(':sub1:generatePomFileForNebulaPublication')
+        assertThat(result).hasNoDeprecationWarnings()
+        def pomFile = new File(projectDir, 'sub1/build/publications/nebula/pom-default.xml')
+        assertThat(pomFile).exists()
+
+        def pom = new XmlSlurper().parse(pomFile)
+
+        def devs = pom.developers.developer
+        assertThat(devs.size()).isEqualTo(1)
+        assertThat(devs[0].name.text()).isEqualTo('Example Nebula')
+        assertThat(devs[0].email.text()).isEqualTo('nebula@example.test')
+        assertThat(devs[0].id.text()).isEqualTo('nebula-plugins')
+    }
+}