Add performance stress tests

2020-03-02 23:08:11 +01:00
parent 9ea97a3dfb
commit 9c530b1121
10 changed files with 636 additions and 90 deletions
@@ -13,22 +13,16 @@ import com.intellij.codeInsight.daemon.impl.IdentifierHighlighterPassFactory
 import com.intellij.codeInsight.lookup.LookupElement
 import com.intellij.ide.startup.impl.StartupManagerImpl
 import com.intellij.openapi.actionSystem.IdeActions
-import com.intellij.openapi.application.ApplicationManager
 import com.intellij.openapi.application.runWriteAction
 import com.intellij.openapi.editor.EditorFactory
-import com.intellij.openapi.externalSystem.service.project.manage.ExternalProjectsManagerImpl
 import com.intellij.openapi.fileEditor.FileDocumentManager
 import com.intellij.openapi.fileEditor.FileEditorManager
-import com.intellij.openapi.module.ModuleManager
 import com.intellij.openapi.project.DumbService
 import com.intellij.openapi.project.Project
 import com.intellij.openapi.projectRoots.JavaSdk
 import com.intellij.openapi.projectRoots.Sdk
 import com.intellij.openapi.projectRoots.impl.JavaAwareProjectJdkTableImpl
 import com.intellij.openapi.startup.StartupManager
-import com.intellij.openapi.vcs.changes.ChangeListManager
-import com.intellij.openapi.vcs.changes.ChangeListManagerImpl
-import com.intellij.openapi.vfs.VirtualFileManager
 import com.intellij.psi.PsiDocumentManager
 import com.intellij.psi.PsiFile
 import com.intellij.psi.PsiManager
@@ -40,14 +34,11 @@ import com.intellij.testFramework.fixtures.impl.CodeInsightTestFixtureImpl
 import com.intellij.util.ArrayUtilRt
 import com.intellij.util.ThrowableRunnable
 import com.intellij.util.indexing.UnindexedFilesUpdater
-import com.intellij.util.io.exists
 import com.intellij.util.ui.UIUtil
-import org.jetbrains.kotlin.idea.configuration.getModulesWithKotlinFiles
 import org.jetbrains.kotlin.idea.core.script.ScriptConfigurationManager
 import org.jetbrains.kotlin.idea.framework.KotlinSdkType
 import org.jetbrains.kotlin.idea.perf.Stats.Companion.WARM_UP
 import org.jetbrains.kotlin.idea.perf.Stats.Companion.runAndMeasure
-import org.jetbrains.kotlin.idea.project.getAndCacheLanguageLevelByDependencies
 import org.jetbrains.kotlin.idea.test.invalidateLibraryCache
 import org.jetbrains.kotlin.idea.testFramework.*
 import org.jetbrains.kotlin.idea.testFramework.Fixture.Companion.cleanupCaches
@@ -55,9 +46,9 @@ import org.jetbrains.kotlin.idea.testFramework.Fixture.Companion.close
 import org.jetbrains.kotlin.idea.testFramework.Fixture.Companion.isAKotlinScriptFile
 import org.jetbrains.kotlin.idea.testFramework.Fixture.Companion.openFileInEditor
 import org.jetbrains.kotlin.idea.testFramework.Fixture.Companion.openFixture
+import org.jetbrains.kotlin.idea.testFramework.ProjectOpenAction.SIMPLE_JAVA_MODULE
 import org.jetbrains.kotlin.idea.util.getProjectJdkTableSafe
 import java.io.File
-import java.nio.file.Paths

 abstract class AbstractPerformanceProjectsTest : UsefulTestCase() {

@@ -114,12 +105,14 @@ abstract class AbstractPerformanceProjectsTest : UsefulTestCase() {
            ThrowableRunnable { super.tearDown() },
            ThrowableRunnable {
                if (myProject != null) {
+                    logMessage { "myProject is about to be closed" }
                    DaemonCodeAnalyzerSettings.getInstance().isImportHintEnabled = true // return default value to avoid unnecessary save
                    (StartupManager.getInstance(project()) as StartupManagerImpl).checkCleared()
                    (DaemonCodeAnalyzer.getInstance(project()) as DaemonCodeAnalyzerImpl).cleanupAfterTest()
                    closeProject(project())
                    myApplication.setDataProvider(null)
                    myProject = null
+                    logMessage { "myProject is closed" }
                }
            }).run()
    }
@@ -129,6 +122,15 @@ abstract class AbstractPerformanceProjectsTest : UsefulTestCase() {
        return if (lastIndexOf >= 0) fileName.substring(lastIndexOf + 1) else fileName
    }

+    protected fun perfOpenHelloWorld(stats: Stats, note: String = ""): Project =
+        perfOpenProject(
+            name = "helloKotlin",
+            stats = stats,
+            note = note,
+            path = "idea/testData/perfTest/helloKotlin",
+            openAction = SIMPLE_JAVA_MODULE
+        )
+
    protected fun perfOpenProject(
        name: String,
        stats: Stats,
@@ -147,64 +149,35 @@ abstract class AbstractPerformanceProjectsTest : UsefulTestCase() {
        var lastProject: Project? = null
        var counter = 0

+        val openProject = OpenProject(
+            projectPath = path,
+            projectName = name,
+            jdk = jdk18,
+            projectOpenAction = openAction
+        )
+
        performanceTest<Unit, Project> {
-            name("open project${if (note.isNotEmpty()) " $note" else ""}")
+            name("open project $name${if (note.isNotEmpty()) " $note" else ""}")
            stats(stats)
            warmUpIterations(warmUpIterations)
            iterations(iterations)
            checkStability(!fast)
            test {
-                val project = openAction.openProject(
-                    projectPath = path,
-                    projectName = name,
-                    jdk = jdk18
-                )
-
-                dispatchAllInvocationEvents()
-
-                runStartupActivities(project)
-
-                logMessage { "project $name is ${if (project.isInitialized) "initialized" else "not initialized"}" }
-
-                with(ChangeListManager.getInstance(project) as ChangeListManagerImpl) {
-                    waitUntilRefreshed()
-                }
-
-                it.value = project
+                it.value = ProjectOpenAction.openProject(openProject)
            }
            tearDown {
                it.value?.let { project ->
-
-                    runAndMeasure("refresh gradle project $name") {
-                        refreshGradleProjectIfNeeded(projectPath, project)
-                    }
-
-                    ApplicationManager.getApplication().executeOnPooledThread {
-                        DumbService.getInstance(project).waitForSmartMode()
-
-                        for (module in getModulesWithKotlinFiles(project)) {
-                            module.getAndCacheLanguageLevelByDependencies()
-                        }
-                    }.get()
-
-                    val modules = ModuleManager.getInstance(project).modules
-                    assertTrue("project $name has to have at least one module", modules.isNotEmpty())
-
-                    logMessage { "modules of $name: ${modules.map { m -> m.name }}" }
-
                    lastProject = project
-                    VirtualFileManager.getInstance().syncRefresh()
-
-                    runWriteAction {
-                        project.save()
-                    }
+                    openAction.postOpenProject(openProject = openProject, project = project)

                    logMessage { "project '$name' successfully opened" }

                    // close all project but last - we're going to return and use it further
                    if (counter < warmUpIterations + iterations - 1) {
                        myApplication.setDataProvider(null)
+                        logMessage { "project '$name' is about to be closed" }
                        closeProject(project)
+                        logMessage { "project '$name' successfully closed" }
                    }
                    counter++
                }
@@ -235,22 +208,6 @@ abstract class AbstractPerformanceProjectsTest : UsefulTestCase() {
        return lastProject ?: error("unable to open project $name at $path")
    }

-    private fun refreshGradleProjectIfNeeded(projectPath: String, project: Project) {
-        if (listOf("build.gradle.kts", "build.gradle").map { name -> Paths.get(projectPath, name).exists() }.find { e -> e } != true) return
-
-        ExternalProjectsManagerImpl.getInstance(project).setStoreExternally(true)
-
-        refreshGradleProject(projectPath, project)
-
-        dispatchAllInvocationEvents()
-
-        // WARNING: [VD] DO NOT SAVE PROJECT AS IT COULD PERSIST WRONG MODULES INFO
-
-//        runInEdtAndWait {
-//            PlatformTestUtil.saveProject(project)
-//        }
-    }
-
    fun perfTypeAndAutocomplete(
        stats: Stats,
        fileName: String,
@@ -294,7 +251,7 @@ abstract class AbstractPerformanceProjectsTest : UsefulTestCase() {
            testBlock = { fixture: Fixture ->
                fixture.complete()
            },
-            tearDownCheck = { _, value: Array<LookupElement>? ->
+            tearDownCheck = { fixture, value: Array<LookupElement>? ->
                val items = value?.map { e -> e.lookupString }?.toList() ?: emptyList()
                for (lookupElement in lookupElements) {
                    assertTrue("'$lookupElement' has to be present in items $items", items.contains(lookupElement))
@@ -369,12 +326,12 @@ abstract class AbstractPerformanceProjectsTest : UsefulTestCase() {
                iterations(15)
                profileEnabled(true)
                setUp {
-                    val tasksIdx = editor.document.text.indexOf(marker)
-                    assertTrue("marker '$marker' not found in $fileName", tasksIdx > 0)
+                    val markerOffset = editor.document.text.indexOf(marker)
+                    assertTrue("marker '$marker' not found in $fileName", markerOffset > 0)
                    if (typeAfterMarker) {
-                        editor.caretModel.moveToOffset(tasksIdx + marker.length + 1)
+                        editor.caretModel.moveToOffset(markerOffset + marker.length + 1)
                    } else {
-                        editor.caretModel.moveToOffset(tasksIdx - 1)
+                        editor.caretModel.moveToOffset(markerOffset - 1)
                    }

                    for (surroundItem in surroundItems) {
@@ -420,7 +377,8 @@ abstract class AbstractPerformanceProjectsTest : UsefulTestCase() {
    ) = perfTypeAndHighlight(
        project(), stats, fileName, marker, insertString, surroundItems,
        typeAfterMarker = typeAfterMarker,
-        revertChangesAtTheEnd = revertChangesAtTheEnd, note = note
+        revertChangesAtTheEnd = revertChangesAtTheEnd,
+        note = note
    )

    fun perfTypeAndHighlight(
@@ -488,6 +446,92 @@ abstract class AbstractPerformanceProjectsTest : UsefulTestCase() {
        }
    }

+    fun perfType(
+        stats: Stats,
+        fileName: String,
+        marker: String,
+        insertString: String,
+        surroundItems: String = "\n",
+        typeAfterMarker: Boolean = true,
+        revertChangesAtTheEnd: Boolean = true,
+        note: String = "",
+        delay: Long? = null
+    ) = perfType(
+        project(), stats, fileName, marker, insertString, surroundItems,
+        typeAfterMarker = typeAfterMarker,
+        revertChangesAtTheEnd = revertChangesAtTheEnd,
+        note = note,
+        delay = delay
+    )
+
+    fun perfType(
+        project: Project,
+        stats: Stats,
+        fileName: String,
+        marker: String,
+        insertString: String,
+        surroundItems: String = "\n",
+        typeAfterMarker: Boolean = true,
+        revertChangesAtTheEnd: Boolean = true,
+        note: String = "",
+        delay: Long? = null
+    ) {
+        performanceTest<Pair<String, Fixture>, List<HighlightInfo>> {
+            name("type ${notePrefix(note)}$fileName")
+            stats(stats)
+            warmUpIterations(8)
+            iterations(15)
+            setUp {
+                val fixture = openFixture(project, fileName)
+                val editor = fixture.editor
+
+                val initialText = editor.document.text
+                updateScriptDependenciesIfNeeded(fileName, fixture, project)
+
+                val tasksIdx = editor.document.text.indexOf(marker)
+                assertTrue("marker '$marker' not found in $fileName", tasksIdx > 0)
+                if (typeAfterMarker) {
+                    editor.caretModel.moveToOffset(tasksIdx + marker.length + 1)
+                } else {
+                    editor.caretModel.moveToOffset(tasksIdx - 1)
+                }
+
+                for (surroundItem in surroundItems) {
+                    EditorTestUtil.performTypingAction(editor, surroundItem)
+                }
+
+                editor.caretModel.moveToOffset(editor.caretModel.offset - if (typeAfterMarker) 1 else 2)
+
+                if (!typeAfterMarker) {
+                    for (surroundItem in surroundItems) {
+                        EditorTestUtil.performTypingAction(editor, surroundItem)
+                    }
+                    editor.caretModel.moveToOffset(editor.caretModel.offset - 2)
+                }
+
+                it.setUpValue = Pair(initialText, fixture)
+            }
+            test {
+                val fixture = it.setUpValue!!.second
+                for (i in insertString.indices) {
+                    fixture.type(insertString[i])
+                    delay?.let { d -> Thread.sleep(d) }
+                }
+                it.value = fixture.doHighlighting()
+            }
+            tearDown {
+                it.value?.let { list ->
+                    assertNotEmpty(list)
+                }
+                it.setUpValue?.let { pair ->
+                    pair.second.revertChanges(revertChangesAtTheEnd, pair.first)
+                }
+                commitAllDocuments()
+            }
+            profileEnabled(true)
+        }
+    }
+
    fun perfCopyAndPaste(
        stats: Stats,
        sourceFileName: String,
@@ -0,0 +1,14 @@
+/*
+ * 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.perf
+
+import java.nio.file.*
+
+fun Path.copyRecursively(targetDirectory: Path) {
+    val src = this
+    Files.walk(src)
+        .forEach { source -> Files.copy(source, targetDirectory.resolve(src.relativize(source)), StandardCopyOption.REPLACE_EXISTING) }
+}
@@ -16,7 +16,7 @@ class PerfTestBuilder<SV, TV> {
    private var profileEnabled: Boolean = false
    private var checkStability: Boolean = true

-    fun run() {
+    internal fun run() {
        stats.perfTest(
            testName = name,
            warmUpIterations = warmUpIterations,
@@ -20,8 +20,7 @@ import org.jetbrains.kotlin.idea.perf.Stats.Companion.tcSuite
 import org.jetbrains.kotlin.idea.testFramework.Fixture
 import org.jetbrains.kotlin.idea.testFramework.Fixture.Companion.cleanupCaches
 import org.jetbrains.kotlin.idea.testFramework.Fixture.Companion.isAKotlinScriptFile
-import org.jetbrains.kotlin.idea.testFramework.ProjectOpenAction.EXISTING_IDEA_PROJECT
-import org.jetbrains.kotlin.idea.testFramework.ProjectOpenAction.SIMPLE_JAVA_MODULE
+import org.jetbrains.kotlin.idea.testFramework.ProjectOpenAction.GRADLE_PROJECT
 import java.util.concurrent.atomic.AtomicLong
 import kotlin.test.assertNotEquals

@@ -217,20 +216,11 @@ class PerformanceProjectsTest : AbstractPerformanceProjectsTest() {
            stats = stats,
            note = "",
            path = "../perfTestProject",
-            openAction = EXISTING_IDEA_PROJECT,
+            openAction = GRADLE_PROJECT,
            fast = fast
        )
    }

-    private fun perfOpenHelloWorld(stats: Stats, note: String = ""): Project =
-        perfOpenProject(
-            name = "helloKotlin",
-            stats = stats,
-            note = note,
-            path = "idea/testData/perfTest/helloKotlin",
-            openAction = SIMPLE_JAVA_MODULE
-        )
-
    private fun perfScriptDependenciesBuildGradleKts(it: Stats) {
        perfScriptDependencies("build.gradle.kts", stats = it)
    }
@@ -0,0 +1,119 @@
+/*
+ * 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.perf
+
+import org.jetbrains.kotlin.idea.perf.Stats.Companion.tcSuite
+
+class PerformanceStressTest : AbstractPerformanceProjectsTest() {
+
+    companion object {
+
+        @JvmStatic
+        var warmedUp: Boolean = false
+
+        @JvmStatic
+        val hwStats: Stats = Stats("helloWorld project")
+
+        init {
+            // there is no @AfterClass for junit3.8
+            Runtime.getRuntime().addShutdownHook(Thread { hwStats.close() })
+        }
+
+    }
+
+    override fun setUp() {
+        super.setUp()
+        // warm up: open simple small project
+        if (!warmedUp) {
+            warmUpProject(hwStats, "src/HelloMain.kt") {
+                openProject {
+                    name("helloWorld")
+
+                    kotlinFile("HelloMain") {
+                        topFunction("main") {
+                            param("args", "Array<String>")
+                            body("""println("Hello World!")""")
+                        }
+                    }
+                }
+            }
+            warmedUp = true
+        }
+    }
+
+    fun testLotsOfOverloadedMethods() {
+        // KT-35135
+        val generatedTypes = mutableListOf(listOf<String>())
+        generateTypes(arrayOf("Int", "String", "Long", "List<Int>", "Array<Int>"), generatedTypes)
+
+        tcSuite("Lots of overloaded method project") {
+            myProject = openProject {
+                name("kt-35135")
+                buildGradle("idea/testData/perfTest/simpleTemplate/")
+
+                kotlinFile("OverloadX") {
+                    pkg("pkg")
+
+                    topClass("OverloadX") {
+                        openClass()
+
+                        for (types in generatedTypes) {
+                            function("foo") {
+                                openFunction()
+                                returnType("String")
+                                for ((index, type) in types.withIndex()) {
+                                    param("arg$index", type)
+                                }
+                                body("TODO()")
+                            }
+                        }
+                    }
+                }
+
+                kotlinFile("SomeClass") {
+                    pkg("pkg")
+
+                    topClass("SomeClass") {
+                        superClass("OverloadX")
+
+                        body("ov")
+                    }
+                }
+            }
+
+            val stats = Stats("kt-35135 project")
+            stats.use { stats ->
+                perfType(
+                    stats,
+                    "src/main/java/pkg/SomeClass.kt",
+                    "ov",
+                    "override fun foo(): String = TODO()",
+                    note = "override fun foo()",
+                    delay = 50
+                )
+            }
+        }
+    }
+
+    private tailrec fun generateTypes(types: Array<String>, results: MutableList<List<String>>, index: Int = 0, maxCount: Int = 3000) {
+        val newResults = mutableListOf<List<String>>()
+        for (list in results) {
+            if (list.size < index) continue
+            for (t in types) {
+                val newList = mutableListOf<String>()
+                newList.addAll(list)
+                newList.add(t)
+                newResults.add(newList.toList())
+                if (results.size + newResults.size >= maxCount) {
+                    results.addAll(newResults)
+                    return
+                }
+            }
+        }
+        results.addAll(newResults)
+        generateTypes(types, results, index + 1, maxCount)
+    }
+}
@@ -0,0 +1,227 @@
+/*
+ * 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.perf
+
+import com.intellij.openapi.project.Project
+import com.intellij.openapi.projectRoots.JavaSdk
+import com.intellij.openapi.projectRoots.impl.JavaAwareProjectJdkTableImpl
+import com.intellij.util.io.*
+import org.jetbrains.kotlin.idea.testFramework.OpenProject
+import org.jetbrains.kotlin.idea.testFramework.ProjectOpenAction
+import java.nio.file.Files
+import java.nio.file.Paths
+
+abstract class AbstractSource {
+    protected val body = StringBuilder()
+
+    protected open fun newLineAfterCodeBlock(): Boolean = true
+
+    protected open fun intendLevel(): Int = 0
+
+    private fun intendPrefix() = " ".repeat(2 * intendLevel())
+
+    fun body(code: Any) {
+        this.body.append(code.toString().prependIndent(intendPrefix()))
+        if (newLineAfterCodeBlock()) this.body.append('\n')
+    }
+
+    override fun toString(): String = body.toString()
+}
+
+abstract class AbstractClassSource(val name: String) : AbstractSource() {
+    override fun intendLevel(): Int = 1
+
+    fun function(name: String, funSource: FunSource.() -> Unit) {
+        val funSource = FunSource(name).apply(funSource)
+        super.body(funSource)
+    }
+}
+
+class CompanionObjectSource : AbstractClassSource("") {
+    override fun toString(): String = "companion object {\n$body}"
+}
+
+class ClassSource(name: String, private val topLevel: Boolean = true) : AbstractClassSource(name) {
+
+    private var openClass: Boolean = false
+
+    private var superClass: String? = null
+    private val interfaces = mutableListOf<String>()
+
+    fun superClass(superClass: String) {
+        check(this.superClass == null) { "super class is already specified for $name: ${this.superClass}" }
+        this.superClass = superClass
+    }
+
+    fun interfaces(iface: String) {
+        interfaces.add(iface)
+    }
+
+    fun openClass() {
+        openClass(true)
+    }
+
+    fun openClass(openClass: Boolean) {
+        this.openClass = openClass
+    }
+
+    fun companionObject(companionObjectSource: CompanionObjectSource.() -> Unit) {
+        check(topLevel) { "companion object is allowed only in top-level classes, wrong class: $name" }
+        val source = CompanionObjectSource().apply(companionObjectSource)
+        super.body(source)
+    }
+
+    private fun openPrefix(): String = if (!openClass) "" else "open "
+
+    private fun superAndInterfaces(): String {
+        val superStr = if (superClass != null) {
+            ": $superClass()"
+        } else ""
+
+        return if (interfaces.isEmpty()) superStr
+        else {
+            val interfacesStr = interfaces.joinToString()
+            if (superStr.isEmpty()) ": $interfacesStr" else "$superStr, $interfacesStr"
+        }
+    }
+
+    override fun toString(): String = "${openPrefix()}class $name ${superAndInterfaces()} {\n$body}"
+}
+
+class FunSource(val name: String) : AbstractSource() {
+    private val params = mutableMapOf<String, String>()
+    private var openFunction: Boolean = false
+    private var returnType: String? = null
+
+    override fun intendLevel(): Int = 1
+
+    fun openFunction() {
+        this.openFunction = true
+    }
+
+    fun param(name: String, type: String) {
+        this.params[name] = type
+    }
+
+    fun returnType(returnType: String) {
+        this.returnType = returnType
+    }
+
+    private fun modifiers(): String {
+        val s = if (openFunction) "open" else ""
+        return if (s.isEmpty()) s else "$s "
+    }
+
+    private fun retType(): String {
+        returnType ?: return ""
+        return ": $returnType "
+    }
+
+    override fun toString(): String =
+        "${modifiers()}fun $name(${params.map { it.key + ": " + it.value }.joinToString()}) ${retType()}{\n$body}"
+}
+
+class KotlinFileSource : AbstractSource() {
+
+    internal var pkg: String? = null
+
+    fun pkg(pkg: String) {
+        check(this.pkg == null) { "package directive is already specified: ${this.pkg}" }
+        this.pkg = pkg
+        super.body("package $pkg\n")
+    }
+
+    fun topClass(name: String, clsSource: ClassSource.() -> Unit) {
+        val classSource = ClassSource(name).apply(clsSource)
+        super.body(classSource)
+    }
+
+    fun topFunction(name: String, funSource: FunSource.() -> Unit) {
+        val funSource = FunSource(name).apply(funSource)
+        super.body(funSource)
+    }
+}
+
+class ProjectBuilder {
+    internal var buildGradle: String? = null
+    internal lateinit var name: String
+    private val kotlinFiles = mutableListOf<Pair<String, KotlinFileSource>>()
+
+    fun buildGradle(buildGradle: String) {
+        this.buildGradle = buildGradle
+    }
+
+    fun name(name: String) {
+        this.name = name
+    }
+
+    fun kotlinFile(name: String, kotlinFileSource: KotlinFileSource.() -> Unit) {
+        val source = KotlinFileSource().apply(kotlinFileSource)
+        kotlinFiles.add(Pair(name, source))
+    }
+
+    internal fun generateFiles(): String {
+        val targetDirectory = Files.createTempDirectory(name)
+        Runtime.getRuntime().addShutdownHook(Thread {
+            targetDirectory.delete(true)
+        })
+
+        val javaMainSrcDir = if (buildGradle != null) {
+            val buildGradlePath = Paths.get(buildGradle)
+            when {
+                buildGradlePath.isFile() -> {
+                    buildGradlePath.copy(targetDirectory)
+                }
+                buildGradlePath.isDirectory() -> {
+                    val buildGradleFile =
+                        listOf("build.gradle.kts", "build.gradle").map { buildGradlePath.resolve(it) }.firstOrNull { it.exists() }
+                            ?: error("neither build.gradle.kts nor build.gradle found at $buildGradlePath")
+                    buildGradleFile.copy(targetDirectory.resolve(buildGradleFile.fileName))
+                }
+                else -> error("illegal type of build gradle path: $buildGradlePath")
+            }
+
+            targetDirectory.resolve("src/main/java")
+        } else {
+            targetDirectory.resolve("src")
+        }
+        javaMainSrcDir.createDirectories()
+        kotlinFiles.forEach { (name, source) ->
+            val srcDir = source.pkg?.let { pkg ->
+                val path = javaMainSrcDir.resolve(pkg.replace('.', '/'))
+                path.createDirectories()
+                path
+            } ?: javaMainSrcDir
+            srcDir.resolve("$name.kt").toFile().writeText(source.toString())
+        }
+        //
+        return targetDirectory.toAbsolutePath().toFile().absolutePath
+    }
+}
+
+fun openProject(initializer: ProjectBuilder.() -> Unit): Project {
+    val projectBuilder = ProjectBuilder().apply(initializer)
+    val projectPath = projectBuilder.generateFiles()
+
+    val jdkTableImpl = JavaAwareProjectJdkTableImpl.getInstanceEx()
+    val homePath = if (jdkTableImpl.internalJdk.homeDirectory!!.name == "jre") {
+        jdkTableImpl.internalJdk.homeDirectory!!.parent.path
+    } else {
+        jdkTableImpl.internalJdk.homePath!!
+    }
+    val javaSdk = JavaSdk.getInstance()
+    val jdk18 = javaSdk.createJdk("1.8", homePath)
+    val openAction = if (projectBuilder.buildGradle != null) ProjectOpenAction.GRADLE_PROJECT else ProjectOpenAction.SIMPLE_JAVA_MODULE
+    val openProject = OpenProject(
+        projectPath = projectPath,
+        projectName = projectBuilder.name,
+        jdk = jdk18,
+        projectOpenAction = openAction
+    )
+    val project = ProjectOpenAction.openProject(openProject)
+    openAction.postOpenProject(project = project, openProject = openProject)
+    return project
+}
@@ -61,6 +61,10 @@ class Fixture(val project: Project, val editor: Editor, val psiFile: PsiFile, va
        delegate.type(s)
    }

+    fun type(c: Char) {
+        delegate.type(c)
+    }
+
    fun performEditorAction(actionId: String): Boolean {
        selectEditor()
        return delegate.performEditorAction(actionId)
@@ -6,20 +6,34 @@
 package org.jetbrains.kotlin.idea.testFramework

 import com.intellij.ide.highlighter.ModuleFileType
+import com.intellij.openapi.application.ApplicationManager
 import com.intellij.openapi.application.runWriteAction
+import com.intellij.openapi.externalSystem.service.project.manage.ExternalProjectsManagerImpl
 import com.intellij.openapi.module.ModuleManager
 import com.intellij.openapi.module.ModuleTypeId
+import com.intellij.openapi.project.DumbService
 import com.intellij.openapi.project.Project
 import com.intellij.openapi.project.ex.ProjectManagerEx
 import com.intellij.openapi.projectRoots.Sdk
 import com.intellij.openapi.roots.ProjectRootManager
+import com.intellij.openapi.vcs.changes.ChangeListManager
+import com.intellij.openapi.vcs.changes.ChangeListManagerImpl
 import com.intellij.openapi.vfs.LocalFileSystem
+import com.intellij.openapi.vfs.VirtualFileManager
 import com.intellij.testFramework.PsiTestUtil
+import com.intellij.testFramework.UsefulTestCase
+import com.intellij.util.io.exists
+import org.jetbrains.kotlin.idea.configuration.getModulesWithKotlinFiles
+import org.jetbrains.kotlin.idea.perf.Stats.Companion.runAndMeasure
+import org.jetbrains.kotlin.idea.project.getAndCacheLanguageLevelByDependencies
 import org.jetbrains.kotlin.idea.test.ConfigLibraryUtil
 import java.io.File
+import java.nio.file.Paths
 import kotlin.test.assertNotNull
 import kotlin.test.assertTrue

+data class OpenProject(val projectPath: String, val projectName: String, val jdk: Sdk, val projectOpenAction: ProjectOpenAction)
+
 enum class ProjectOpenAction {
    SIMPLE_JAVA_MODULE {
        override fun openProject(projectPath: String, projectName: String, jdk: Sdk): Project {
@@ -73,7 +87,73 @@ enum class ProjectOpenAction {

            return project
        }
+
+        private fun refreshGradleProjectIfNeeded(projectPath: String, project: Project) {
+            if (listOf("build.gradle.kts", "build.gradle").map { name -> Paths.get(projectPath, name).exists() }
+                    .find { e -> e } != true) return
+
+            ExternalProjectsManagerImpl.getInstance(project).setStoreExternally(true)
+
+            refreshGradleProject(projectPath, project)
+
+            dispatchAllInvocationEvents()
+
+            // WARNING: [VD] DO NOT SAVE PROJECT AS IT COULD PERSIST WRONG MODULES INFO
+
+//        runInEdtAndWait {
+//            PlatformTestUtil.saveProject(project)
+//        }
+        }
+
+        override fun postOpenProject(project: Project, openProject: OpenProject) {
+            runAndMeasure("refresh gradle project ${openProject.projectName}") {
+                refreshGradleProjectIfNeeded(openProject.projectPath, project)
+            }
+
+            super.postOpenProject(project, openProject)
+        }
    };

    abstract fun openProject(projectPath: String, projectName: String, jdk: Sdk): Project
-}
+
+    open fun postOpenProject(project: Project, openProject: OpenProject) {
+        ApplicationManager.getApplication().executeOnPooledThread {
+            DumbService.getInstance(project).waitForSmartMode()
+
+            for (module in getModulesWithKotlinFiles(project)) {
+                module.getAndCacheLanguageLevelByDependencies()
+            }
+        }.get()
+
+        val modules = ModuleManager.getInstance(project).modules
+        UsefulTestCase.assertTrue("project ${openProject.projectName} has to have at least one module", modules.isNotEmpty())
+
+        logMessage { "modules of ${openProject.projectName}: ${modules.map { m -> m.name }}" }
+
+        VirtualFileManager.getInstance().syncRefresh()
+
+        //runWriteAction { project.save() }
+    }
+
+    companion object {
+        fun openProject(openProject: OpenProject): Project {
+            val project = openProject.projectOpenAction.openProject(
+                projectPath = openProject.projectPath,
+                projectName = openProject.projectName,
+                jdk = openProject.jdk
+            )
+
+            dispatchAllInvocationEvents()
+
+            runStartupActivities(project)
+
+            logMessage { "project ${openProject.projectName} is ${if (project.isInitialized) "initialized" else "not initialized"}" }
+
+            with(ChangeListManager.getInstance(project) as ChangeListManagerImpl) {
+                waitUntilRefreshed()
+            }
+            return project
+        }
+    }
+}
+
@@ -5,7 +5,13 @@

 package org.jetbrains.kotlin.idea.testFramework

+import com.intellij.openapi.components.ServiceManager
+import com.intellij.openapi.externalSystem.model.DataNode
+import com.intellij.openapi.externalSystem.model.project.ProjectData
+import com.intellij.openapi.externalSystem.model.task.ExternalSystemTaskId
 import com.intellij.openapi.externalSystem.service.execution.ProgressExecutionMode
+import com.intellij.openapi.externalSystem.service.project.ExternalProjectRefreshCallback
+import com.intellij.openapi.externalSystem.service.project.ProjectDataManager
 import com.intellij.openapi.externalSystem.service.project.manage.ExternalProjectsManagerImpl
 import com.intellij.openapi.externalSystem.util.ExternalSystemApiUtil
 import com.intellij.openapi.externalSystem.util.ExternalSystemUtil
@@ -16,10 +22,11 @@ import org.jetbrains.plugins.gradle.service.project.open.setupGradleSettings
 import org.jetbrains.plugins.gradle.settings.GradleProjectSettings
 import org.jetbrains.plugins.gradle.util.GradleConstants
 import org.jetbrains.plugins.gradle.util.GradleLog
+import java.io.File
 import kotlin.test.assertNotNull

 fun refreshGradleProject(projectPath: String, project: Project) {
-    _importProject(projectPath, project)
+    _importProject(File(projectPath).absolutePath, project)

    dispatchAllInvocationEvents()
 }
@@ -58,6 +65,34 @@ private fun _attachGradleProjectAndRefresh(
    if (settings.getLinkedProjectSettings(externalProjectPath) == null) {
        settings.linkProject(gradleProjectSettings)
    }
-    //ExternalSystemUtil.refreshProject(project, GradleConstants.SYSTEM_ID, externalProjectPath, true, ProgressExecutionMode.MODAL_SYNC)
-    ExternalSystemUtil.refreshProject(project, GradleConstants.SYSTEM_ID, externalProjectPath, false, ProgressExecutionMode.MODAL_SYNC)
+    //ExternalSystemUtil.refreshProject(project, GradleConstants.SYSTEM_ID, externalProjectPath, false, ProgressExecutionMode.MODAL_SYNC)
+
+    val progressExecutionMode = ProgressExecutionMode.MODAL_SYNC
+    val externalSystemId = GradleConstants.SYSTEM_ID
+    val callback = object : ExternalProjectRefreshCallback {
+        override fun onFailure(errorMessage: String, errorDetails: String?) {
+            super.onFailure(errorMessage, errorDetails)
+            throw RuntimeException(errorMessage)
+        }
+
+        override fun onFailure(
+            externalTaskId: ExternalSystemTaskId,
+            errorMessage: String,
+            errorDetails: String?
+        ) {
+            super.onFailure(externalTaskId, errorMessage, errorDetails)
+            throw RuntimeException(errorMessage)
+        }
+
+        override fun onSuccess(externalProject: DataNode<ProjectData>?) {
+            if (externalProject == null) {
+                return
+            }
+            val synchronous = progressExecutionMode == ProgressExecutionMode.MODAL_SYNC
+            ServiceManager.getService(
+                ProjectDataManager::class.java
+            ).importData(externalProject, project, synchronous)
+        }
+    }
+    ExternalSystemUtil.refreshProject(project, externalSystemId, externalProjectPath, callback, false, progressExecutionMode, true)
 }
@@ -0,0 +1,33 @@
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
+plugins {
+    kotlin("jvm") version "1.3.61"
+}
+
+version = "1.0.0-SNAPSHOT"
+
+tasks.withType<KotlinCompile> {
+    kotlinOptions {
+        jvmTarget = "1.8"
+        freeCompilerArgs = listOf("-Xjsr305=strict")
+    }
+}
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    compile("org.jetbrains.kotlin:kotlin-stdlib-jdk8")
+    compile("org.jetbrains.kotlin:kotlin-reflect")
+    compile("org.jetbrains:annotations:16.0.1")
+}
+
+val compileKotlin: KotlinCompile by tasks
+compileKotlin.kotlinOptions {
+    jvmTarget = "1.8"
+}
+val compileTestKotlin: KotlinCompile by tasks
+compileTestKotlin.kotlinOptions {
+    jvmTarget = "1.8"
+}