Add PublishMetadataTest

build.gradle.kts

@@ -77,6 +77,9 @@ testing {
             useJUnitJupiter(libs.versions.junit.jupiter)
         }
         register<JvmTestSuite>("functionalTest") {
+            dependencies {
+                implementation(libs.json)
+            }
             targets.configureEach {
                 testTask {
                     environment(

src/functionalTest/kotlin/io/github/sgtsilvio/gradle/oci/PublishMetadataTest.kt

@@ -0,0 +1,145 @@
+package io.github.sgtsilvio.gradle.oci
+
+import org.gradle.testkit.runner.GradleRunner
+import org.gradle.testkit.runner.TaskOutcome
+import org.json.JSONObject
+import org.junit.jupiter.api.Assertions.*
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.io.TempDir
+import java.io.File
+
+/**
+ * @author Silvio Giebl
+ */
+internal class PublishMetadataTest {
+
+    @Test
+    fun test(@TempDir projectDir: File) {
+        projectDir.resolve("settings.gradle.kts").writeText(
+            """
+            rootProject.name = "test"
+            """.trimIndent()
+        )
+        projectDir.resolve("build.gradle.kts").writeText(
+            """
+            plugins {
+                java
+                `maven-publish`
+                id("io.github.sgtsilvio.gradle.oci")
+            }
+            group = "org.example"
+            version = "1.0.0"
+            tasks.jar {
+                manifest.attributes("Main-Class" to "org.example.oci.demo.Main")
+            }
+            tasks.withType<AbstractArchiveTask>().configureEach {
+                isPreserveFileTimestamps = false
+                isReproducibleFileOrder = true
+            }
+            repositories {
+                mavenCentral()
+            }
+            oci {
+                registries {
+                    dockerHub {
+                        credentials.set(providers.credentials(PasswordCredentials::class, "dockerHub"))
+                    }
+                }
+                imageDefinitions.register("main") {
+                    allPlatforms {
+                        parentImages {
+                            add("library:eclipse-temurin:17.0.7_7-jre-jammy")
+                        }
+                        config {
+                            entryPoint.set(listOf("java", "-jar", "app.jar"))
+                        }
+                        layers {
+                            layer("jar") {
+                                contents {
+                                    from(tasks.jar)
+                                    rename(".*", "app.jar")
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            val javaComponent = components["java"] as AdhocComponentWithVariants
+            javaComponent.addVariantsFromConfiguration(configurations["ociImage"]) {}
+            publishing {
+                publications {
+                    register<MavenPublication>("maven") {
+                        from(components["java"])
+                    }
+                }
+            }
+            """.trimIndent()
+        )
+        projectDir.resolve("src/main/java/test/Main.java").apply { parentFile.mkdirs() }.writeText(
+            """
+            package test;
+            public class Main {
+                public static void main(final String[] args) {
+                    System.out.println("Hello world!");
+                }
+            }
+            """.trimIndent()
+        )
+
+        val result = GradleRunner.create()
+            .withProjectDir(projectDir)
+            .withPluginClasspath()
+            .withArguments("generateMetadataFileForMavenPublication", "-Dorg.gradle.kotlin.dsl.scriptCompilationAvoidance=false")
+            .build()
+
+        assertEquals(TaskOutcome.SUCCESS, result.task(":jar")?.outcome)
+        assertEquals(TaskOutcome.SUCCESS, result.task(":jarOciLayer")?.outcome)
+        assertEquals(TaskOutcome.SUCCESS, result.task(":ociComponent")?.outcome)
+        assertEquals(TaskOutcome.SUCCESS, result.task(":generateMetadataFileForMavenPublication")?.outcome)
+
+        val moduleMetadata = JSONObject(projectDir.resolve("build/publications/maven/module.json").readText())
+        val ociImageVariant = moduleMetadata.getJSONArray("variants")
+            .filterIsInstance<JSONObject>()
+            .find { it.getString("name") == "ociImage" } ?: fail()
+        val expectedOciImageVariant = JSONObject(
+            """
+            {
+              "name": "ociImage",
+              "attributes": {
+                "io.github.sgtsilvio.gradle.distributiontype": "oci-image",
+                "org.gradle.category": "distribution",
+                "org.gradle.dependency.bundling": "external"
+              },
+              "dependencies": [
+                {
+                  "group": "library",
+                  "module": "eclipse-temurin",
+                  "version": {"requires": "17.0.7_7-jre-jammy"}
+                }
+              ],
+              "files": [
+                {
+                  "name": "test-1.0.0-oci-component.json",
+                  "url": "test-1.0.0-oci-component.json",
+                  "size": 492,
+                  "sha512": "913ce805f2573fa3c291a04dc20fe0bbc2fd80b30a274671f3bf4fb20daa9025ec6a3828ddff4b57b2a5e2c4388e2d8779057f542643bf0a288f82551064a37c",
+                  "sha256": "aac0e2ec54b8570aa5319d97e89f43e3bace4b702aeab7553113935489e66c0f",
+                  "sha1": "5237ea4b551f2331dc7a38194cc690014ff0d33e",
+                  "md5": "5ac361c1c364157050ea3d060355bf47"
+                },
+                {
+                  "name": "test-1.0.0-jar-oci-layer.tgz",
+                  "url": "test-1.0.0-jar-oci-layer.tgz",
+                  "size": 658,
+                  "sha512": "198f27beef9682ed4e060e7ef9f1f6d5bb040e335e4f88dc42a2d2ee91326203ca6d9663e61f005cdd6d0d42e227b40de64f6627b5d2b07e9ec31947e812a99d",
+                  "sha256": "ff7671a164ce921dc63d32e0af3c9a5aaafee2fa4d8f09565468c471a09a2426",
+                  "sha1": "cc042eabe35afed7a80bf058ca8b76576fb3aa1b",
+                  "md5": "67b04445855a3e4a935bd6af5bb733aa"
+                }
+              ]
+            }
+            """.trimIndent()
+        )
+        assertEquals(expectedOciImageVariant.toMap(), ociImageVariant.toMap())
+    }
+}