Add KGPDaemonsBaseTest class as test base for daemons test.

This class will stop Gradle and Kotlin daemons after each test
execution.

^KT-45745 In Progress

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/GradleDaemonMemoryIT.kt

@@ -14,17 +14,10 @@ import org.junit.jupiter.api.DisplayName
 import kotlin.test.assertTrue
 
 @DisplayName("Gradle daemon memory leak")
-@DaemonsGradlePluginTests
-class GradleDaemonMemoryIT : KGPBaseTest() {
+class GradleDaemonMemoryIT : KGPDaemonsBaseTest() {
     override val defaultBuildOptions: BuildOptions
         get() = super.defaultBuildOptions.copy(logLevel = LogLevel.DEBUG)
 
-    @AfterEach
-    fun tearDown() {
-        // Stops Gradle and Kotlin daemons, so new run will start them again
-        ConnectorServices.reset()
-    }
-
     // For corresponding documentation, see https://docs.gradle.org/current/userguide/gradle_daemon.html
     // Setting user.variant to different value implies a new daemon process will be created.
     // In order to stop daemon process, special exit task is used ( System.exit(0) ).

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/Kapt3AndGradleDaemon.kt

@@ -14,7 +14,7 @@ import org.junit.jupiter.api.DisplayName
 
 @DisplayName("Kapt caching inside Gradle daemon")
 @DaemonsGradlePluginTests
-class Kapt3AndGradleDaemon : KGPBaseTest() {
+class Kapt3AndGradleDaemon : KGPDaemonsBaseTest() {
 
     override val defaultBuildOptions: BuildOptions = super.defaultBuildOptions
         .copy(
@@ -25,12 +25,6 @@ class Kapt3AndGradleDaemon : KGPBaseTest() {
             )
         )
 
-    @AfterEach
-    internal fun tearDown() {
-        // Stops Gradle and Kotlin daemon, so new run will pick up new jvm arguments
-        ConnectorServices.reset()
-    }
-
     @DisplayName("Javac should be loaded only once")
     @GradleTest
     fun testJavacIsLoadedOnce(gradleVersion: GradleVersion) {

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/KotlinDaemonJvmArgsTest.kt

@@ -13,18 +13,11 @@ import org.jetbrains.kotlin.gradle.testbase.*
 import org.junit.jupiter.api.AfterEach
 import org.junit.jupiter.api.DisplayName
 
-@DaemonsGradlePluginTests
 @DisplayName("Kotlin daemon JVM args")
-class KotlinDaemonJvmArgsTest : KGPBaseTest() {
+class KotlinDaemonJvmArgsTest : KGPDaemonsBaseTest() {
     override val defaultBuildOptions: BuildOptions
         get() = super.defaultBuildOptions.copy(logLevel = LogLevel.DEBUG)
 
-    @AfterEach
-    internal fun tearDown() {
-        // Stops Gradle and Kotlin daemon, so new run will pick up new jvm arguments
-        ConnectorServices.reset()
-    }
-
     @GradleTest
     @DisplayName("Kotlin daemon by default should inherit Gradle daemon max jvm heap size")
     internal fun shouldInheritGradleDaemonArgsByDefault(gradleVersion: GradleVersion) {

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/testbase/KGPDaemonsBaseTest.kt

@@ -0,0 +1,19 @@
+/*
+ * Copyright 2010-2021 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.gradle.testbase
+
+import org.gradle.tooling.internal.consumer.ConnectorServices
+import org.junit.jupiter.api.AfterEach
+
+@DaemonsGradlePluginTests
+abstract class KGPDaemonsBaseTest : KGPBaseTest() {
+
+    @AfterEach
+    internal open fun tearDown() {
+        // Stops Gradle and Kotlin daemon, so new run will pick up new jvm arguments
+        ConnectorServices.reset()
+    }
+}