Update access to resCollection (#88)

Author: Marcel Schnelle

android-junit5/src/main/groovy/de/mannodermaus/gradle/plugins/junit5/GroovyInterop.groovy

@@ -97,6 +97,19 @@ class GroovyInterop {
     return collection == null ? null : collection.files
   }
 
+  /**
+   * Obtains the Res Collection of the given AndroidUnitTest.
+   *
+   * @because 'resCollection' type changed from FileCollection to BuildArtifact in Android Gradle Plugin 3.2.0-alpha11
+   * @param test The Android JUnit 4 test to access
+   * @return Its assets collection
+   */
+  @Nullable
+  static Set<File> androidUnitTest_resCollection(AndroidUnitTest test) {
+    def collection = test.resCollection
+    return collection == null ? null : collection.files
+  }
+
   /**
    * Obtains the Merged Manifest of the given AndroidUnitTest.
    *

android-junit5/src/main/kotlin/de/mannodermaus/gradle/plugins/junit5/Interop.kt

@@ -20,6 +20,9 @@ val BaseVariant.variantData: BaseVariantData
 val VariantScope.safeJavaOutputDirs: Set<File>
   get() = GroovyInterop.variantScope_javaOutputDirs(this)
 
+val AndroidUnitTest.safeResCollection: Set<File>?
+  get() = GroovyInterop.androidUnitTest_resCollection(this)
+
 val AndroidUnitTest.safeAssetsCollection: Set<File>?
   get() = GroovyInterop.androidUnitTest_assetsCollection(this)
 

android-junit5/src/main/kotlin/de/mannodermaus/gradle/plugins/junit5/tasks/UnitTest.kt

@@ -13,6 +13,7 @@ import de.mannodermaus.gradle.plugins.junit5.providers.DirectoryProvider
 import de.mannodermaus.gradle.plugins.junit5.providers.classDirectories
 import de.mannodermaus.gradle.plugins.junit5.safeAssetsCollection
 import de.mannodermaus.gradle.plugins.junit5.safeMergedManifest
+import de.mannodermaus.gradle.plugins.junit5.safeResCollection
 import de.mannodermaus.gradle.plugins.junit5.variantData
 import org.gradle.api.DefaultTask
 import org.gradle.api.Project
@@ -196,7 +197,7 @@ open class AndroidJUnit5UnitTest : JavaExec(), JUnit5UnitTest {
         junit5: AndroidJUnitPlatformExtension) {
       // Connect to the default unit test task
       val variantUnitTestTask = this.getDefaultJUnit4Task()
-      task.resCollection = variantUnitTestTask.resCollection?.files
+      task.resCollection = variantUnitTestTask.safeResCollection
       task.assetsCollection = variantUnitTestTask.safeAssetsCollection
       task.sdkPlatformDirPath = variantUnitTestTask.sdkPlatformDirPath
       task.mergedManifest = variantUnitTestTask.safeMergedManifest