[Gradle][Tests][MPP] Move BETA-versions test logic in MPPBaseTest

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

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2010-2023 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
+
+/** Beta versions of Gradle and AGP are checking in multiplatform related tests.
+ *  Bumped manually.
+ */
+const val BETA_GRADLE = TestVersions.Gradle.G_8_0
+const val BETA_AGP = TestVersions.AGP.AGP_80
+
+/**
+ * Base class for all Multiplatform Gradle plugin Kotlin integration tests.
+ */
+@AndroidTestVersions(additionalVersions = [BETA_AGP])
+@GradleTestVersions(maxVersion = BETA_GRADLE, additionalVersions = [TestVersions.Gradle.MAX_SUPPORTED])
+abstract class MPPBaseTest : KGPBaseTest() {
+}

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

@@ -26,7 +26,6 @@ interface TestVersions {
         const val MIN_SUPPORTED = minSupportedGradleVersion
         const val MIN_SUPPORTED_KPM = G_7_0
         const val MAX_SUPPORTED = G_7_6
-        const val NEXT_RELEASE = G_8_0
     }
 
     object Kotlin {
@@ -48,7 +47,6 @@ interface TestVersions {
 
         const val MIN_SUPPORTED = AGP_42 // KotlinAndroidPlugin.minimalSupportedAgpVersion
         const val MAX_SUPPORTED = AGP_74 // Update once Gradle MAX_SUPPORTED version will be bumped
-        const val NEXT_RELEASE = AGP_80
     }
 
     enum class AgpCompatibilityMatrix(