Build: Make robolectric tests run offline without downloading artifacts

#KTI-1367

plugins/android-extensions/android-extensions-compiler/build.gradle.kts

@@ -7,6 +7,8 @@ plugins {
 }
 
 val robolectricClasspath by configurations.creating
+val robolectricDependency by configurations.creating
+
 val androidExtensionsRuntimeForTests by configurations.creating
 val layoutLib by configurations.creating
 val layoutLibApi by configurations.creating
@@ -37,8 +39,9 @@ dependencies {
     testApi(project(":kotlin-test:kotlin-test-jvm"))
     testApi(commonDependency("junit:junit"))
 
+    robolectricDependency("org.robolectric:android-all:5.0.2_r3-robolectric-r0")
+
     robolectricClasspath(commonDependency("org.robolectric", "robolectric"))
-    robolectricClasspath("org.robolectric:android-all:4.4_r1-robolectric-1")
     robolectricClasspath(project(":kotlin-android-extensions-runtime")) { isTransitive = false }
 
     embedded(project(":kotlin-android-extensions-runtime")) { isTransitive = false }
@@ -65,10 +68,19 @@ javadocJar()
 
 testsJar()
 
+val robolectricDependencyDir = "$buildDir/robolectricDependencies"
+val prepareRobolectricDependencies by tasks.registering(Copy::class) {
+    from(robolectricDependency)
+    into(robolectricDependencyDir)
+}
+
 projectTest {
     dependsOn(androidExtensionsRuntimeForTests)
     dependsOn(robolectricClasspath)
+
+    dependsOn(prepareRobolectricDependencies)
     dependsOn(":dist")
+
     workingDir = rootDir
     useAndroidJar()
 
@@ -86,6 +98,10 @@ projectTest {
     doFirst {
         systemProperty("androidExtensionsRuntime.classpath", androidExtensionsRuntimeProvider.get())
         systemProperty("robolectric.classpath", robolectricClasspathProvider.get())
+
+        systemProperty("robolectric.offline", "true")
+        systemProperty("robolectric.dependency.dir", robolectricDependencyDir)
+
         systemProperty("layoutLib.path", layoutLibConf.singleFile.canonicalPath)
         systemProperty("layoutLibApi.path", layoutLibApiConf.singleFile.canonicalPath)
     }

plugins/android-extensions/android-extensions-compiler/test/org/jetbrains/kotlin/android/parcel/AbstractParcelBoxTest.kt

@@ -144,13 +144,20 @@ abstract class AbstractParcelBoxTest : CodegenTestCase() {
             classFileFactory.getClassFiles().forEach { writeClass(it.relativePath, it.asByteArray()) }
             javaClassesOutputDirectory?.listFiles()?.forEach { writeClass(it.name, it.readBytes()) }
 
+            val robolectricProperties = System.getProperties().propertyNames().asSequence()
+                .map { it.toString() }.filter { it.startsWith("robolectric") }
+                .map { "-D$it=${System.getProperty(it)}" }
+                .toList()
+                .toTypedArray()
+
             val process = ProcessBuilder(
                 javaExe.absolutePath,
                 "-ea",
                 "-classpath",
                 (libraryClasspath + dirForTestClasses).joinToString(File.pathSeparator),
+                *robolectricProperties,
                 JUnitCore::class.java.name,
-                JUNIT_GENERATED_TEST_CLASS_FQNAME
+                JUNIT_GENERATED_TEST_CLASS_FQNAME,
             ).start()
 
             val out = process.inputStream.bufferedReader().lineSequence().joinToString("\n")