i18n: add bundle for idea/testIntegration

idea/resources/messages/KotlinTestIntegrationBundle.properties

@@ -0,0 +1,5 @@
+button.text.cancel=Cancel
+button.text.rewrite=Rewrite
+message.text.create.test.in.the.same.source.root=Create test in the same source root?
+message.text.kotlin.class=Kotlin class ''{0}'' already exists. Do you want to update it?
+title.no.test.roots.found=No Test Roots Found

idea/src/org/jetbrains/kotlin/idea/testIntegration/KotlinCreateTestIntention.kt

@@ -108,8 +108,8 @@ class KotlinCreateTestIntention : SelfTargetingRangeIntention<KtNamedDeclaration
                 if (testFolders.isEmpty() && !propertiesComponent.getBoolean("create.test.in.the.same.root")) {
                     if (Messages.showOkCancelDialog(
                             project,
-                            "Create test in the same source root?",
-                            "No Test Roots Found",
+                            KotlinTestIntegrationBundle.message("message.text.create.test.in.the.same.source.root"),
+                            KotlinTestIntegrationBundle.message("title.no.test.roots.found"),
                             Messages.getQuestionIcon()
                         ) != Messages.OK
                     ) return
@@ -130,10 +130,10 @@ class KotlinCreateTestIntention : SelfTargetingRangeIntention<KtNamedDeclaration
                     // TODO: Override dialog method when it becomes protected
                     val answer = Messages.showYesNoDialog(
                         project,
-                        "Kotlin class '${existingClass.name}' already exists. Do you want to update it?",
+                        KotlinTestIntegrationBundle.message("message.text.kotlin.class", existingClass.name.toString()),
                         CommonBundle.getErrorTitle(),
-                        "Rewrite",
-                        "Cancel",
+                        KotlinTestIntegrationBundle.message("button.text.rewrite"),
+                        KotlinTestIntegrationBundle.message("button.text.cancel"),
                         Messages.getErrorIcon()
                     )
                     if (answer == Messages.NO) return

idea/src/org/jetbrains/kotlin/idea/testIntegration/KotlinTestIntegrationBundle.kt

@@ -0,0 +1,18 @@
+/*
+ * Copyright 2010-2020 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.idea.testIntegration
+
+import org.jetbrains.annotations.NonNls
+import org.jetbrains.annotations.PropertyKey
+import org.jetbrains.kotlin.util.AbstractKotlinBundle
+
+@NonNls
+private const val BUNDLE = "messages.KotlinTestIntegrationBundle"
+
+object KotlinTestIntegrationBundle : AbstractKotlinBundle(BUNDLE) {
+    @JvmStatic
+    fun message(@PropertyKey(resourceBundle = BUNDLE) key: String, vararg params: Any): String = getMessage(key, *params)
+}