Convert ShadowJarCachingSpec

src/intiTest/kotlin/com/github/jengelman/gradle/plugins/shadow/BasePluginTest.kt

@@ -296,6 +296,8 @@ abstract class BasePluginTest {
     }
 
     val testJar: Path = requireNotNull(this::class.java.classLoader.getResource("junit-3.8.2.jar")).toURI().toPath()
+    val artifactJar: Path = requireNotNull(this::class.java.classLoader.getResource("test-artifact-1.0-SNAPSHOT.jar")).toURI().toPath()
+    val projectJar: Path = requireNotNull(this::class.java.classLoader.getResource("test-project-1.0-SNAPSHOT.jar")).toURI().toPath()
 
     val shadowJar: String = """
       tasks.named('$SHADOW_JAR_TASK_NAME', ${ShadowJar::class.java.name})

src/intiTest/kotlin/com/github/jengelman/gradle/plugins/shadow/ShadowPluginTest.kt

@@ -14,7 +14,6 @@ import com.github.jengelman.gradle.plugins.shadow.util.doesNotContainEntries
 import com.github.jengelman.gradle.plugins.shadow.util.isRegular
 import kotlin.io.path.appendText
 import kotlin.io.path.readText
-import kotlin.io.path.toPath
 import kotlin.io.path.writeText
 import org.gradle.api.plugins.JavaPlugin
 import org.gradle.testfixtures.ProjectBuilder
@@ -83,11 +82,6 @@ class ShadowPluginTest : BasePluginTest() {
 
   @Test
   fun shadowCopy() {
-    val artifactJar = requireNotNull(this::class.java.classLoader.getResource("test-artifact-1.0-SNAPSHOT.jar"))
-      .toURI().toPath()
-    val projectJar = requireNotNull(this::class.java.classLoader.getResource("test-project-1.0-SNAPSHOT.jar"))
-      .toURI().toPath()
-
     projectScriptPath.appendText(
       """
         $shadowJar {

src/intiTest/kotlin/com/github/jengelman/gradle/plugins/shadow/caching/BaseCachingTest.kt

@@ -24,6 +24,11 @@ abstract class BaseCachingTest : BasePluginTest() {
   @TempDir
   lateinit var alternateDir: Path
 
+  /**
+   * TODO: have to invistigate why `:` is necessary here.
+   */
+  override val shadowJarTask: String = ":" + super.shadowJarTask
+
   @BeforeEach
   override fun setup() {
     super.setup()

src/intiTest/kotlin/com/github/jengelman/gradle/plugins/shadow/caching/RelocationCachingTest.kt

@@ -9,11 +9,6 @@ import kotlin.io.path.writeText
 import org.junit.jupiter.api.Test
 
 class RelocationCachingTest : BaseCachingTest() {
-  /**
-   * TODO: have to invistigate why `:` is necessary here.
-   */
-  override val shadowJarTask: String = ":" + super.shadowJarTask
-
   /**
    * Ensure that we get a cache miss when relocation changes and that caching works with relocation
    */