TypeAccessibilityChecker: add logs for tests

idea/src/org/jetbrains/kotlin/idea/quickfix/expectactual/CreateExpectedFix.kt

@@ -178,18 +178,23 @@ private tailrec fun TypeAccessibilityChecker.findAndApplyExistingClasses(element
     else findAndApplyExistingClasses(newExistingClasses)
 }
 
-private fun showUnknownTypesDialog(project: Project, declarationsWithNonExistentClasses: Collection<KtNamedDeclaration>): Boolean =
-    declarationsWithNonExistentClasses.isEmpty() || showOkNoDialog(
+private fun showUnknownTypesDialog(project: Project, declarationsWithNonExistentClasses: Collection<KtNamedDeclaration>): Boolean {
+    if (declarationsWithNonExistentClasses.isEmpty()) return true
+    val message = StringUtil.escapeXmlEntities(
+        declarationsWithNonExistentClasses.joinToString(
+            prefix = "These declarations cannot be transformed:\n",
+            separator = "\n",
+            transform = ::getExpressionShortText
+        )
+    )
+
+    TypeAccessibilityChecker.testLog?.append("$message\n")
+    return ApplicationManager.getApplication().isUnitTestMode || showOkNoDialog(
         "Unknown types",
-        StringUtil.escapeXmlEntities(
-            declarationsWithNonExistentClasses.joinToString(
-                prefix = "These declarations cannot be transformed:\n",
-                separator = "\n",
-                transform = ::getExpressionShortText
-            )
-        ),
+        message,
         project
     )
+}
 
 private fun showUnknownTypesError(element: KtNamedDeclaration) {
     element.findExistingEditor()?.let { editor ->

idea/src/org/jetbrains/kotlin/idea/quickfix/expectactual/TypeAccessibilityChecker.kt

@@ -7,6 +7,7 @@ package org.jetbrains.kotlin.idea.quickfix.expectactual
 
 import com.intellij.openapi.module.Module
 import com.intellij.openapi.project.Project
+import org.jetbrains.annotations.TestOnly
 import org.jetbrains.kotlin.descriptors.DeclarationDescriptor
 import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.psi.KtNamedDeclaration
@@ -33,5 +34,9 @@ interface TypeAccessibilityChecker {
             targetModule: Module,
             existingFqNames: Collection<String> = emptyList()
         ): TypeAccessibilityChecker = TypeAccessibilityCheckerImpl(project, targetModule, existingFqNames)
+
+        @get:TestOnly
+        @set:TestOnly
+        var testLog: StringBuilder? = null
     }
 }

idea/tests/org/jetbrains/kotlin/idea/quickfix/AbstractQuickFixMultiModuleTest.kt

@@ -14,6 +14,7 @@ import junit.framework.ComparisonFailure
 import junit.framework.TestCase
 import org.jetbrains.kotlin.idea.inspections.findExistingEditor
 import org.jetbrains.kotlin.idea.multiplatform.setupMppProjectFromDirStructure
+import org.jetbrains.kotlin.idea.quickfix.expectactual.TypeAccessibilityChecker
 import org.jetbrains.kotlin.idea.stubs.AbstractMultiModuleTest
 import org.jetbrains.kotlin.idea.test.DirectiveBasedActionUtils
 import org.jetbrains.kotlin.idea.test.PluginTestCaseBase
@@ -54,10 +55,16 @@ abstract class AbstractQuickFixMultiModuleTest : AbstractMultiModuleTest(), Quic
                 expectedErrorMessage = InTextDirectivesUtils.findListWithPrefixes(actionFileText, "// SHOULD_FAIL_WITH: ")
                     .joinToString(separator = "\n")
 
-                AbstractQuickFixMultiFileTest.doAction(
-                    text, file, editor, actionShouldBeAvailable, actionFileName, this::availableActions, this::doHighlighting,
-                    InTextDirectivesUtils.isDirectiveDefined(actionFile.text, "// SHOULD_BE_AVAILABLE_AFTER_EXECUTION")
-                )
+                TypeAccessibilityChecker.testLog = StringBuilder()
+                val log = try {
+                    AbstractQuickFixMultiFileTest.doAction(
+                        text, file, editor, actionShouldBeAvailable, actionFileName, this::availableActions, this::doHighlighting,
+                        InTextDirectivesUtils.isDirectiveDefined(actionFile.text, "// SHOULD_BE_AVAILABLE_AFTER_EXECUTION")
+                    )
+                    TypeAccessibilityChecker.testLog.toString()
+                } finally {
+                    TypeAccessibilityChecker.testLog = null
+                }
 
                 if (actionFile is KtFile) {
                     DirectiveBasedActionUtils.checkForUnexpectedErrors(actionFile)
@@ -66,7 +73,15 @@ abstract class AbstractQuickFixMultiModuleTest : AbstractMultiModuleTest(), Quic
                 if (actionShouldBeAvailable) {
                     compareToExpected(dirPath)
                 }
+
                 UsefulTestCase.assertEmpty(expectedErrorMessage)
+                val logFile = File("${dirPath}log.log")
+                if (log.isNotEmpty()) {
+                    KotlinTestUtils.assertEqualsToFile(logFile, log)
+                } else {
+                    TestCase.assertFalse(logFile.exists())
+                }
+
             } catch (e: ComparisonFailure) {
                 throw e
             } catch (e: AssertionError) {