Add integration test for Kapt3+IR

plugins/kapt3/kapt3-compiler/test/org/jetbrains/kotlin/kapt3/test/AbstractIrKotlinKapt3IntegrationTest.kt

@@ -0,0 +1,19 @@
+/*
+ * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.kapt3.test
+
+import org.jetbrains.kotlin.config.CompilerConfiguration
+import org.jetbrains.kotlin.config.JVMConfigurationKeys
+import org.jetbrains.kotlin.test.TargetBackend
+
+abstract class AbstractIrKotlinKapt3IntegrationTest : AbstractKotlinKapt3IntegrationTest() {
+    override fun updateConfiguration(configuration: CompilerConfiguration) {
+        super.updateConfiguration(configuration)
+        configuration.put(JVMConfigurationKeys.IR, true)
+    }
+
+    override fun getBackend() = TargetBackend.JVM_IR
+}

plugins/kapt3/kapt3-compiler/test/org/jetbrains/kotlin/kapt3/test/AbstractKotlinKapt3IntegrationTest.kt

@@ -168,8 +168,8 @@ abstract class AbstractKotlinKapt3IntegrationTest : CodegenTestCase() {
         }
     }
 
-    protected class Kapt3ExtensionForTests(options: KaptOptions, private val processors: List<Processor>) : AbstractKapt3Extension(
-        options, MessageCollectorBackedKaptLogger(options), compilerConfiguration = CompilerConfiguration.EMPTY
+    protected inner class Kapt3ExtensionForTests(options: KaptOptions, private val processors: List<Processor>) : AbstractKapt3Extension(
+        options, MessageCollectorBackedKaptLogger(options), compilerConfiguration = myEnvironment.configuration
     ) {
         internal var savedStubs: String? = null
         internal var savedBindings: Map<String, KaptJavaFileObject>? = null

plugins/kapt3/kapt3-compiler/test/org/jetbrains/kotlin/kapt3/test/IrKotlinKapt3IntegrationTests.kt

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.kapt3.test
+
+import org.junit.Test
+import javax.annotation.processing.ProcessingEnvironment
+import javax.annotation.processing.RoundEnvironment
+import javax.lang.model.element.TypeElement
+
+// For now, just run one simple test to make sure Kapt launches at all with IR switched on.
+class IrKotlinKapt3IntegrationTests : AbstractIrKotlinKapt3IntegrationTest(), CustomJdkTestLauncher {
+    override fun test(
+        name: String,
+        vararg supportedAnnotations: String,
+        options: Map<String, String>,
+        process: (Set<TypeElement>, RoundEnvironment, ProcessingEnvironment) -> Unit
+    ) {
+        super.test(name, *supportedAnnotations, options = options, process = process)
+
+        doTestWithJdk9(
+            SingleJUnitTestRunner::class.java,
+            IrKotlinKapt3IntegrationTests::class.java.name + "#test" + getTestName(false)
+        )
+    }
+
+    @Test
+    fun testSimple() = test("Simple", "test.MyAnnotation") { set, roundEnv, _ ->
+        assertEquals(1, set.size)
+        val annotatedElements = roundEnv.getElementsAnnotatedWith(set.single())
+        assertEquals(1, annotatedElements.size)
+        assertEquals("myMethod", annotatedElements.single().simpleName.toString())
+    }
+
+}