Extract common versions to the separate file.

^KT-45744 In Progress

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

@@ -23,6 +23,7 @@ import org.jetbrains.kotlin.gradle.plugin.MULTIPLE_KOTLIN_PLUGINS_LOADED_WARNING
 import org.jetbrains.kotlin.gradle.plugin.MULTIPLE_KOTLIN_PLUGINS_SPECIFIC_PROJECTS_WARNING
 import org.jetbrains.kotlin.gradle.scripting.internal.ScriptingGradleSubplugin
 import org.jetbrains.kotlin.gradle.tasks.USING_JVM_INCREMENTAL_COMPILATION_MESSAGE
+import org.jetbrains.kotlin.gradle.testbase.TestVersions
 import org.jetbrains.kotlin.gradle.util.*
 import org.jetbrains.kotlin.test.util.KtTestUtil
 import org.junit.Test
@@ -402,7 +403,7 @@ class KotlinGradleIT : BaseGradleIT() {
             assertSuccessful()
         }
 
-        project.build("clean", "assemble", options = options.copy(kotlinVersion = "1.3.41")) {
+        project.build("clean", "assemble", options = options.copy(kotlinVersion = TestVersions.Kotlin.STABLE_RELEASE)) {
             assertSuccessful()
         }
     }

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

@@ -10,18 +10,12 @@ import org.gradle.api.logging.configuration.WarningMode
 import org.gradle.internal.impldep.org.junit.platform.commons.support.AnnotationSupport.findAnnotation
 import org.gradle.util.GradleVersion
 import org.jetbrains.kotlin.gradle.BaseGradleIT
-import org.jetbrains.kotlin.gradle.KOTLIN_VERSION
-import org.jetbrains.kotlin.gradle.utils.minSupportedGradleVersion
 import org.jetbrains.kotlin.test.WithMuteInDatabase
-import org.junit.jupiter.api.DisplayName
-import org.junit.jupiter.api.Test
 import org.junit.jupiter.api.TestInstance
 import org.junit.jupiter.api.extension.ExtensionContext
 import org.junit.jupiter.api.io.TempDir
-import org.junit.jupiter.params.ParameterizedTest
 import org.junit.jupiter.params.provider.Arguments
 import org.junit.jupiter.params.provider.ArgumentsProvider
-import org.junit.jupiter.params.provider.ArgumentsSource
 import java.nio.file.Path
 import java.util.stream.Stream
 import kotlin.streams.asStream
@@ -39,7 +33,7 @@ abstract class KGPBaseTest {
 
     data class BuildOptions(
         val logLevel: LogLevel = LogLevel.INFO,
-        val kotlinVersion: String = KOTLIN_VERSION,
+        val kotlinVersion: String = TestVersions.Kotlin.CURRENT,
         val warningMode: WarningMode = WarningMode.Fail,
         val configurationCache: Boolean = false,
         val configurationCacheProblems: BaseGradleIT.ConfigurationCacheProblems = BaseGradleIT.ConfigurationCacheProblems.FAIL,
@@ -117,8 +111,8 @@ abstract class KGPBaseTest {
     @Target(AnnotationTarget.FUNCTION, AnnotationTarget.ANNOTATION_CLASS)
     @Retention(AnnotationRetention.RUNTIME)
     annotation class GradleTestVersions(
-        val minVersion: String = minSupportedGradleVersion,
-        val maxVersion: String = "7.0",
+        val minVersion: String = TestVersions.Gradle.MIN_SUPPORTED,
+        val maxVersion: String = TestVersions.Gradle.MAX_SUPPORTED,
         val additionalVersions: Array<String> = []
     )
 }

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

@@ -0,0 +1,23 @@
+/*
+ * 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.jetbrains.kotlin.gradle.utils.minSupportedGradleVersion
+
+interface TestVersions {
+    object Gradle {
+        const val MIN_SUPPORTED = minSupportedGradleVersion
+        const val MAX_SUPPORTED = "7.0"
+    }
+
+    object Kotlin {
+        const val STABLE_RELEASE = "1.4.32"
+
+        // Copied from KOTLIN_VERSION.kt file
+        val CURRENT
+            get() = System.getProperty("kotlinVersion") ?: error("Required to specify kotlinVersion system property for tests")
+    }
+}