[TEST] Introduce test-infrastructure-utils module and extract common test utilities here

compiler/test-infrastructure-utils/tests/com/intellij/testFramework/TestDataFile.java

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2000-2010 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.intellij.testFramework;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Marks the annotated parameter as referencing a file in the testdata directory.
+ */
+@Retention(RetentionPolicy.SOURCE)
+@Target({ElementType.PARAMETER})
+public @interface TestDataFile {
+}

compiler/test-infrastructure-utils/tests/com/intellij/testFramework/TestDataPath.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright 2010-2016 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.intellij.testFramework;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Specifies the path to testdata for the current test case class.
+ * May use the variable $CONTENT_ROOT to specify the module content root or
+ * $PROJECT_ROOT to use the project base directory.
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target({ElementType.TYPE})
+public @interface TestDataPath {
+  String value();
+}

compiler/test-infrastructure-utils/tests/org/jetbrains/kotlin/codeMetaInfo/CodeMetaInfoParser.kt

@@ -0,0 +1,79 @@
+/*
+ * 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.codeMetaInfo
+
+import org.jetbrains.kotlin.codeMetaInfo.model.ParsedCodeMetaInfo
+
+object CodeMetaInfoParser {
+    val openingRegex = """(<!([^"]*?((".*?")(, ".*?")*?)?[^"]*?)!>)""".toRegex()
+    val closingRegex = """(<!>)""".toRegex()
+
+    val openingOrClosingRegex = """(${closingRegex.pattern}|${openingRegex.pattern})""".toRegex()
+
+    /*
+     * ([\S&&[^,(){}]]+) -- tag, allowing all non-space characters except bracers and curly bracers
+     * ([{](.*?)[}])? -- list of platforms
+     * (\("(.*?)"\))? -- arguments of meta info
+     * (, )? -- possible separator between different infos
+     */
+    private val tagRegex = """([\S&&[^,(){}]]+)([{](.*?)[}])?(\("(.*?)"\))?(, )?""".toRegex()
+
+    fun getCodeMetaInfoFromText(renderedText: String): List<ParsedCodeMetaInfo> {
+        var text = renderedText
+        val openingMatchResults = ArrayDeque<MatchResult>()
+        val stackOfOpeningMatchResults = ArrayDeque<MatchResult>()
+        val closingMatchResults = mutableMapOf<MatchResult, MatchResult>()
+        val result = mutableListOf<ParsedCodeMetaInfo>()
+
+        while (true) {
+            var openingStartOffset = Int.MAX_VALUE
+            var closingStartOffset = Int.MAX_VALUE
+            val opening = openingRegex.find(text)
+            val closing = closingRegex.find(text)
+            if (opening == null && closing == null) break
+
+            if (opening != null)
+                openingStartOffset = opening.range.first
+            if (closing != null)
+                closingStartOffset = closing.range.first
+
+            text = if (openingStartOffset < closingStartOffset) {
+                requireNotNull(opening)
+                openingMatchResults.addLast(opening)
+                stackOfOpeningMatchResults.addLast(opening)
+                text.removeRange(openingStartOffset, opening.range.last + 1)
+            } else {
+                requireNotNull(closing)
+                closingMatchResults[stackOfOpeningMatchResults.removeLast()] = closing
+                text.removeRange(closingStartOffset, closing.range.last + 1)
+            }
+        }
+        if (openingMatchResults.size != closingMatchResults.size) {
+            error("Opening and closing tags counts are not equals")
+        }
+        while (!openingMatchResults.isEmpty()) {
+            val openingMatchResult = openingMatchResults.removeLast()
+            val closingMatchResult = closingMatchResults.getValue(openingMatchResult)
+            val allMetaInfos = openingMatchResult.groups[2]!!.value
+            tagRegex.findAll(allMetaInfos).map { it.groups }.forEach {
+                val tag = it[1]!!.value
+                val platforms = it[3]?.value?.split(";") ?: emptyList()
+                val description = it[5]?.value
+
+                result.add(
+                    ParsedCodeMetaInfo(
+                        openingMatchResult.range.first,
+                        closingMatchResult.range.first,
+                        platforms.toMutableList(),
+                        tag,
+                        description
+                    )
+                )
+            }
+        }
+        return result
+    }
+}

compiler/test-infrastructure-utils/tests/org/jetbrains/kotlin/codeMetaInfo/CodeMetaInfoRenderer.kt

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+/*
+ * 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.codeMetaInfo
+
+import com.intellij.util.containers.Stack
+import org.jetbrains.kotlin.checkers.utils.CheckerTestUtil
+import org.jetbrains.kotlin.codeMetaInfo.model.CodeMetaInfo
+import java.io.File
+
+object CodeMetaInfoRenderer {
+    fun renderTagsToText(
+        codeMetaInfos: List<CodeMetaInfo>,
+        originalText: String
+    ): StringBuilder {
+        return StringBuilder().apply {
+            renderTagsToText(this, codeMetaInfos, originalText)
+        }
+    }
+
+    fun renderTagsToText(
+        builder: StringBuilder,
+        codeMetaInfos: List<CodeMetaInfo>,
+        originalText: String
+    ) {
+        if (codeMetaInfos.isEmpty()) {
+            builder.append(originalText)
+            return
+        }
+        val sortedMetaInfos = getSortedCodeMetaInfos(codeMetaInfos).groupBy { it.start }
+        val opened = Stack<CodeMetaInfo>()
+
+        for ((i, c) in originalText.withIndex()) {
+            processMetaInfosStartedAtOffset(i, sortedMetaInfos, opened, builder)
+            builder.append(c)
+        }
+        val lastSymbolIsNewLine = builder.last() == '\n'
+        if (lastSymbolIsNewLine) {
+            builder.deleteCharAt(builder.length - 1)
+        }
+        processMetaInfosStartedAtOffset(originalText.length, sortedMetaInfos, opened, builder)
+        if (lastSymbolIsNewLine) {
+            builder.appendLine()
+        }
+    }
+
+    private fun processMetaInfosStartedAtOffset(
+        offset: Int,
+        sortedMetaInfos: Map<Int, List<CodeMetaInfo>>,
+        opened: Stack<CodeMetaInfo>,
+        builder: StringBuilder
+    ) {
+        checkOpenedAndCloseStringIfNeeded(opened, offset, builder)
+        val matchedCodeMetaInfos = sortedMetaInfos[offset] ?: emptyList()
+        if (matchedCodeMetaInfos.isNotEmpty()) {
+            openStartTag(builder)
+            val iterator = matchedCodeMetaInfos.listIterator()
+            var current: CodeMetaInfo? = iterator.next()
+
+            while (current != null) {
+                val next: CodeMetaInfo? = if (iterator.hasNext()) iterator.next() else null
+                opened.push(current)
+                builder.append(current.asString())
+                when {
+                    next == null ->
+                        closeStartTag(builder)
+                    next.end == current.end ->
+                        builder.append(", ")
+                    else ->
+                        closeStartAndOpenNewTag(builder)
+                }
+                current = next
+            }
+        }
+        // Here we need to handle meta infos which has start == end and close them immediately
+        checkOpenedAndCloseStringIfNeeded(opened, offset, builder)
+    }
+
+    private val metaInfoComparator = (compareBy<CodeMetaInfo> { it.start } then compareByDescending { it.end }) then compareBy { it.tag }
+
+    private fun getSortedCodeMetaInfos(metaInfos: Collection<CodeMetaInfo>): List<CodeMetaInfo> {
+        return metaInfos.sortedWith(metaInfoComparator)
+    }
+
+    private fun closeString(result: StringBuilder) = result.append("<!>")
+    private fun openStartTag(result: StringBuilder) = result.append("<!")
+    private fun closeStartTag(result: StringBuilder) = result.append("!>")
+    private fun closeStartAndOpenNewTag(result: StringBuilder) = result.append("!><!")
+
+    private fun checkOpenedAndCloseStringIfNeeded(opened: Stack<CodeMetaInfo>, end: Int, result: StringBuilder) {
+        var prev: CodeMetaInfo? = null
+        while (!opened.isEmpty() && end == opened.peek().end) {
+            if (prev == null || prev.start != opened.peek().start)
+                closeString(result)
+            prev = opened.pop()
+        }
+    }
+}
+
+fun clearFileFromDiagnosticMarkup(file: File) {
+    val text = file.readText()
+    val cleanText = clearTextFromDiagnosticMarkup(text)
+    file.writeText(cleanText)
+}
+
+fun clearTextFromDiagnosticMarkup(text: String): String = text.replace(CodeMetaInfoParser.openingOrClosingRegex, "")

compiler/test-infrastructure-utils/tests/org/jetbrains/kotlin/codeMetaInfo/model/CodeMetaInfo.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.codeMetaInfo.model
+
+import org.jetbrains.kotlin.codeMetaInfo.renderConfigurations.AbstractCodeMetaInfoRenderConfiguration
+
+interface CodeMetaInfo {
+    val start: Int
+    val end: Int
+    val tag: String
+    val renderConfiguration: AbstractCodeMetaInfoRenderConfiguration
+    val attributes: MutableList<String>
+
+    fun asString(): String
+}

compiler/test-infrastructure-utils/tests/org/jetbrains/kotlin/codeMetaInfo/model/DiagnosticCodeMetaInfo.kt

@@ -0,0 +1,37 @@
+/*
+ * 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.codeMetaInfo.model
+
+import com.intellij.openapi.util.TextRange
+import org.jetbrains.kotlin.codeMetaInfo.renderConfigurations.DiagnosticCodeMetaInfoRenderConfiguration
+import org.jetbrains.kotlin.diagnostics.Diagnostic
+
+class DiagnosticCodeMetaInfo(
+    override val start: Int,
+    override val end: Int,
+    renderConfiguration: DiagnosticCodeMetaInfoRenderConfiguration,
+    val diagnostic: Diagnostic
+) : CodeMetaInfo {
+    constructor(
+        range: TextRange,
+        renderConfiguration: DiagnosticCodeMetaInfoRenderConfiguration,
+        diagnostic: Diagnostic
+    ) : this(range.startOffset, range.endOffset, renderConfiguration, diagnostic)
+
+    override var renderConfiguration: DiagnosticCodeMetaInfoRenderConfiguration = renderConfiguration
+        private set
+
+    fun replaceRenderConfiguration(renderConfiguration: DiagnosticCodeMetaInfoRenderConfiguration) {
+        this.renderConfiguration = renderConfiguration
+    }
+
+    override val tag: String
+        get() = renderConfiguration.getTag(this)
+
+    override val attributes: MutableList<String> = mutableListOf()
+
+    override fun asString(): String = renderConfiguration.asString(this)
+}

compiler/test-infrastructure-utils/tests/org/jetbrains/kotlin/codeMetaInfo/model/ParsedCodeMetaInfo.kt

@@ -0,0 +1,37 @@
+/*
+ * 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.codeMetaInfo.model
+
+import org.jetbrains.kotlin.codeMetaInfo.renderConfigurations.ParsedCodeMetaInfoRenderConfiguration
+
+class ParsedCodeMetaInfo(
+    override val start: Int,
+    override val end: Int,
+    override val attributes: MutableList<String>,
+    override val tag: String,
+    val description: String?
+) : CodeMetaInfo {
+    override val renderConfiguration = ParsedCodeMetaInfoRenderConfiguration
+
+    override fun asString(): String = renderConfiguration.asString(this)
+
+    override fun equals(other: Any?): Boolean {
+        if (other == null || other !is CodeMetaInfo) return false
+        return this.tag == other.tag && this.start == other.start && this.end == other.end
+    }
+
+    override fun hashCode(): Int {
+        var result = start
+        result = 31 * result + end
+        result = 31 * result + tag.hashCode()
+        return result
+    }
+
+    fun copy(): ParsedCodeMetaInfo {
+        return ParsedCodeMetaInfo(start, end, attributes.toMutableList(), tag, description)
+    }
+}
+

compiler/test-infrastructure-utils/tests/org/jetbrains/kotlin/codeMetaInfo/renderConfigurations/AbstractCodeMetaInfoRenderConfiguration.kt

@@ -0,0 +1,38 @@
+/*
+ * 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.codeMetaInfo.renderConfigurations
+
+import com.intellij.openapi.util.text.StringUtil
+import org.jetbrains.kotlin.codeMetaInfo.model.CodeMetaInfo
+
+abstract class AbstractCodeMetaInfoRenderConfiguration(var renderParams: Boolean = true) {
+    private val clickOrPressRegex = "Click or press (.*)to navigate".toRegex() // We have different hotkeys on different platforms
+    open fun asString(codeMetaInfo: CodeMetaInfo): String = codeMetaInfo.tag + getPlatformsString(codeMetaInfo)
+
+    open fun getAdditionalParams(codeMetaInfo: CodeMetaInfo) = ""
+
+    protected fun sanitizeLineMarkerTooltip(originalText: String?): String {
+        if (originalText == null) return "null"
+        val noHtmlTags = StringUtil.removeHtmlTags(originalText)
+            .replace(" ", "")
+            .replace(clickOrPressRegex, "")
+            .trim()
+        return sanitizeLineBreaks(noHtmlTags)
+    }
+
+    protected fun sanitizeLineBreaks(originalText: String): String {
+        var sanitizedText = originalText
+        sanitizedText = StringUtil.replace(sanitizedText, "\r\n", " ")
+        sanitizedText = StringUtil.replace(sanitizedText, "\n", " ")
+        sanitizedText = StringUtil.replace(sanitizedText, "\r", " ")
+        return sanitizedText
+    }
+
+    protected fun getPlatformsString(codeMetaInfo: CodeMetaInfo): String {
+        if (codeMetaInfo.attributes.isEmpty()) return ""
+        return "{${codeMetaInfo.attributes.joinToString(";")}}"
+    }
+}

compiler/test-infrastructure-utils/tests/org/jetbrains/kotlin/codeMetaInfo/renderConfigurations/DiagnosticCodeMetaInfoRenderConfiguration.kt

@@ -0,0 +1,56 @@
+/*
+ * 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.codeMetaInfo.renderConfigurations
+
+import com.intellij.util.containers.ContainerUtil
+import org.jetbrains.kotlin.checkers.diagnostics.factories.DebugInfoDiagnosticFactory1
+import org.jetbrains.kotlin.codeMetaInfo.model.CodeMetaInfo
+import org.jetbrains.kotlin.codeMetaInfo.model.DiagnosticCodeMetaInfo
+import org.jetbrains.kotlin.diagnostics.Diagnostic
+import org.jetbrains.kotlin.diagnostics.rendering.*
+
+open class DiagnosticCodeMetaInfoRenderConfiguration(
+    val withNewInference: Boolean = true,
+    val renderSeverity: Boolean = false
+) : AbstractCodeMetaInfoRenderConfiguration() {
+    private val crossPlatformLineBreak = """\r?\n""".toRegex()
+
+    override fun asString(codeMetaInfo: CodeMetaInfo): String {
+        if (codeMetaInfo !is DiagnosticCodeMetaInfo) return ""
+        return (getTag(codeMetaInfo)
+                + getPlatformsString(codeMetaInfo)
+                + getParamsString(codeMetaInfo))
+            .replace(crossPlatformLineBreak, "")
+    }
+
+    private fun getParamsString(codeMetaInfo: DiagnosticCodeMetaInfo): String {
+        if (!renderParams) return ""
+        val params = mutableListOf<String>()
+
+        @Suppress("UNCHECKED_CAST")
+        val renderer = when (codeMetaInfo.diagnostic.factory) {
+            is DebugInfoDiagnosticFactory1 -> DiagnosticWithParameters1Renderer(
+                "{0}",
+                Renderers.TO_STRING
+            ) as DiagnosticRenderer<Diagnostic>
+            else -> DefaultErrorMessages.getRendererForDiagnostic(codeMetaInfo.diagnostic)
+        }
+        if (renderer is AbstractDiagnosticWithParametersRenderer) {
+            val renderParameters = renderer.renderParameters(codeMetaInfo.diagnostic)
+            params.addAll(ContainerUtil.map(renderParameters) { it.toString() })
+        }
+        if (renderSeverity)
+            params.add("severity='${codeMetaInfo.diagnostic.severity}'")
+
+        params.add(getAdditionalParams(codeMetaInfo))
+
+        return "(\"${params.filter { it.isNotEmpty() }.joinToString("; ")}\")"
+    }
+
+    fun getTag(codeMetaInfo: DiagnosticCodeMetaInfo): String {
+        return codeMetaInfo.diagnostic.factory.name
+    }
+}

compiler/test-infrastructure-utils/tests/org/jetbrains/kotlin/codeMetaInfo/renderConfigurations/ParsedCodeMetaInfoRenderConfiguration.kt

@@ -0,0 +1,16 @@
+/*
+ * 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.codeMetaInfo.renderConfigurations
+
+import org.jetbrains.kotlin.codeMetaInfo.model.CodeMetaInfo
+import org.jetbrains.kotlin.codeMetaInfo.model.ParsedCodeMetaInfo
+
+object ParsedCodeMetaInfoRenderConfiguration : AbstractCodeMetaInfoRenderConfiguration() {
+    override fun asString(codeMetaInfo: CodeMetaInfo): String {
+        require(codeMetaInfo is ParsedCodeMetaInfo)
+        return super.asString(codeMetaInfo) + (codeMetaInfo.description?.let { "(\"$it\")" } ?: "")
+    }
+}

compiler/test-infrastructure-utils/tests/org/jetbrains/kotlin/codegen/forTestCompile/ForTestCompileRuntime.java

@@ -0,0 +1,149 @@
+/*
+ * Copyright 2010-2018 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.codegen.forTestCompile;
+
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.kotlin.utils.ExceptionUtilsKt;
+
+import java.io.File;
+import java.lang.ref.SoftReference;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.net.URLClassLoader;
+import java.util.ArrayList;
+import java.util.List;
+
+public class ForTestCompileRuntime {
+    private static volatile SoftReference<ClassLoader> reflectJarClassLoader = new SoftReference<>(null);
+    private static volatile SoftReference<ClassLoader> runtimeJarClassLoader = new SoftReference<>(null);
+
+    @NotNull
+    public static File runtimeJarForTests() {
+        return assertExists(new File("dist/kotlinc/lib/kotlin-stdlib.jar"));
+    }
+
+    @NotNull
+    public static File runtimeJarForTestsWithJdk8() {
+        return assertExists(new File("dist/kotlinc/lib/kotlin-stdlib-jdk8.jar"));
+    }
+
+    @NotNull
+    public static File minimalRuntimeJarForTests() {
+        return assertExists(new File("dist/kotlin-stdlib-minimal-for-test.jar"));
+    }
+
+    @NotNull
+    public static File kotlinTestJarForTests() {
+        return assertExists(new File("dist/kotlinc/lib/kotlin-test.jar"));
+    }
+
+    @NotNull
+    public static File kotlinTestJUnitJarForTests() {
+        return assertExists(new File("dist/kotlinc/lib/kotlin-test-junit.jar"));
+    }
+
+    @NotNull
+    public static File kotlinTestJsJarForTests() {
+        return assertExists(new File("dist/kotlinc/lib/kotlin-test-js.jar"));
+    }
+
+    @NotNull
+    public static File reflectJarForTests() {
+        return assertExists(new File("dist/kotlinc/lib/kotlin-reflect.jar"));
+    }
+
+    @NotNull
+    public static File scriptRuntimeJarForTests() {
+        return assertExists(new File("dist/kotlinc/lib/kotlin-script-runtime.jar"));
+    }
+
+    @NotNull
+    public static File runtimeSourcesJarForTests() {
+        return assertExists(new File("dist/kotlinc/lib/kotlin-stdlib-sources.jar"));
+    }
+
+    @NotNull
+    public static File stdlibMavenSourcesJarForTests() {
+        return assertExists(new File("dist/maven/kotlin-stdlib-sources.jar"));
+    }
+
+    @NotNull
+    public static File stdlibCommonForTests() {
+        return assertExists(new File("dist/common/kotlin-stdlib-common.jar"));
+    }
+
+    @NotNull
+    public static File stdlibCommonSourcesForTests() {
+        return assertExists(new File("dist/common/kotlin-stdlib-common-sources.jar"));
+    }
+
+    @NotNull
+    public static File stdlibJsForTests() {
+        return assertExists(new File("dist/kotlinc/lib/kotlin-stdlib-js.jar"));
+    }
+
+    @NotNull
+    public static File jetbrainsAnnotationsForTests() {
+        return assertExists(new File("dist/kotlinc/lib/annotations-13.0.jar"));
+    }
+
+    @NotNull
+    public static File jvmAnnotationsForTests() {
+        return assertExists(new File("dist/kotlinc/lib/kotlin-annotations-jvm.jar"));
+    }
+
+    @NotNull
+    public static File androidAnnotationsForTests() {
+        return assertExists(new File("dist/kotlinc/lib/kotlin-annotations-android.jar"));
+    }
+
+    @NotNull
+    public static File coroutinesCompatForTests() {
+        return assertExists(new File("dist/kotlinc/lib/kotlin-coroutines-experimental-compat.jar"));
+    }
+
+    @NotNull
+    private static File assertExists(@NotNull File file) {
+        if (!file.exists()) {
+            throw new IllegalStateException(file + " does not exist. Run 'gradlew dist'");
+        }
+        return file;
+    }
+
+    @NotNull
+    public static synchronized ClassLoader runtimeAndReflectJarClassLoader() {
+        ClassLoader loader = reflectJarClassLoader.get();
+        if (loader == null) {
+            loader = createClassLoader(runtimeJarForTests(), reflectJarForTests(), scriptRuntimeJarForTests(), kotlinTestJarForTests());
+            reflectJarClassLoader = new SoftReference<>(loader);
+        }
+        return loader;
+    }
+
+    @NotNull
+    public static synchronized ClassLoader runtimeJarClassLoader() {
+        ClassLoader loader = runtimeJarClassLoader.get();
+        if (loader == null) {
+            loader = createClassLoader(runtimeJarForTests(), scriptRuntimeJarForTests(), kotlinTestJarForTests());
+            runtimeJarClassLoader = new SoftReference<>(loader);
+        }
+        return loader;
+    }
+
+    @NotNull
+    private static ClassLoader createClassLoader(@NotNull File... files) {
+        try {
+            List<URL> urls = new ArrayList<>(2);
+            for (File file : files) {
+                urls.add(file.toURI().toURL());
+            }
+            return new URLClassLoader(urls.toArray(new URL[urls.size()]), null);
+        }
+        catch (MalformedURLException e) {
+            throw ExceptionUtilsKt.rethrow(e);
+        }
+    }
+}

compiler/test-infrastructure-utils/tests/org/jetbrains/kotlin/test/util/KtTestUtil.java

@@ -0,0 +1,196 @@
+/*
+ * 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.test.util;
+
+import com.intellij.openapi.project.Project;
+import com.intellij.openapi.util.io.FileUtil;
+import com.intellij.openapi.util.text.StringUtilRt;
+import com.intellij.openapi.vfs.CharsetToolkit;
+import com.intellij.psi.PsiFileFactory;
+import com.intellij.psi.impl.PsiFileFactoryImpl;
+import com.intellij.testFramework.LightVirtualFile;
+import com.intellij.util.PathUtil;
+import org.jetbrains.annotations.NonNls;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import org.jetbrains.kotlin.idea.KotlinLanguage;
+import org.jetbrains.kotlin.psi.KtFile;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+
+public class KtTestUtil {
+    private static String homeDir = computeHomeDirectory();
+
+    @NotNull
+    public static File tmpDirForTest(@NotNull String testClassName, @NotNull String testName) throws IOException {
+        return normalizeFile(FileUtil.createTempDirectory(testClassName, testName, false));
+    }
+
+    @NotNull
+    public static File tmpDir(String name) throws IOException {
+        return normalizeFile(FileUtil.createTempDirectory(name, "", false));
+    }
+
+    @NotNull
+    public static File tmpDirForReusableFolder(String name) throws IOException {
+        return normalizeFile(FileUtil.createTempDirectory(new File(System.getProperty("java.io.tmpdir")), name, "", true));
+    }
+
+    private static File normalizeFile(File file) throws IOException {
+        // Get canonical file to be sure that it's the same as inside the compiler,
+        // for example, on Windows, if a canonical path contains any space from FileUtil.createTempDirectory we will get
+        // a File with short names (8.3) in its path and it will break some normalization passes in tests.
+        return file.getCanonicalFile();
+    }
+
+    @NotNull
+    public static KtFile createFile(@NotNull @NonNls String name, @NotNull String text, @NotNull Project project) {
+        String shortName = name.substring(name.lastIndexOf('/') + 1);
+        shortName = shortName.substring(shortName.lastIndexOf('\\') + 1);
+        LightVirtualFile virtualFile = new LightVirtualFile(shortName, KotlinLanguage.INSTANCE, StringUtilRt.convertLineSeparators(text));
+
+        virtualFile.setCharset(CharsetToolkit.UTF8_CHARSET);
+        PsiFileFactoryImpl factory = (PsiFileFactoryImpl) PsiFileFactory.getInstance(project);
+        //noinspection ConstantConditions
+        return (KtFile) factory.trySetupPsiForFile(virtualFile, KotlinLanguage.INSTANCE, true, false);
+    }
+
+    public static String doLoadFile(String myFullDataPath, String name) throws IOException {
+        String fullName = myFullDataPath + File.separatorChar + name;
+        return doLoadFile(new File(fullName));
+    }
+
+    public static String doLoadFile(@NotNull File file) throws IOException {
+        try {
+            return FileUtil.loadFile(file, CharsetToolkit.UTF8, true);
+        }
+        catch (FileNotFoundException fileNotFoundException) {
+            /*
+             * Unfortunately, the FileNotFoundException will only show the relative path in it's exception message.
+             * This clarifies the exception by showing the full path.
+             */
+            String messageWithFullPath = file.getAbsolutePath() + " (No such file or directory)";
+            throw new IOException(
+                    "Ensure you have your 'Working Directory' configured correctly as the root " +
+                    "Kotlin project directory in your test configuration\n\t" +
+                    messageWithFullPath,
+                    fileNotFoundException);
+        }
+    }
+
+    public static String getFilePath(File file) {
+        return FileUtil.toSystemIndependentName(file.getPath());
+    }
+
+    @NotNull
+    public static File getJdk9Home() {
+        String jdk9 = System.getenv("JDK_9");
+        if (jdk9 == null) {
+            jdk9 = System.getenv("JDK_19");
+            if (jdk9 == null) {
+                throw new AssertionError("Environment variable JDK_9 is not set!");
+            }
+        }
+        return new File(jdk9);
+    }
+
+    @Nullable
+    public static File getJdk11Home() {
+        String jdk11 = System.getenv("JDK_11");
+        if (jdk11 == null) {
+            return null;
+        }
+        return new File(jdk11);
+    }
+
+    @NotNull
+    public static File getJdk15Home() {
+        String jdk15 = System.getenv("JDK_15");
+
+        if (jdk15 == null) {
+            jdk15 = System.getenv("JDK_15_0");
+        }
+
+        if (jdk15 == null) {
+            throw new AssertionError("Environment variable JDK_15 is not set!");
+        }
+        return new File(jdk15);
+    }
+
+    @NotNull
+    public static String getTestDataPathBase() {
+        return getHomeDirectory() + "/compiler/testData";
+    }
+
+    @NotNull
+    public static String getHomeDirectory() {
+        return homeDir;
+    }
+
+    @NotNull
+    private static String computeHomeDirectory() {
+        String userDir = System.getProperty("user.dir");
+        File dir = new File(userDir == null ? "." : userDir);
+        return FileUtil.toCanonicalPath(dir.getAbsolutePath());
+    }
+
+    public static File findMockJdkRtJar() {
+        return new File(getHomeDirectory(), "compiler/testData/mockJDK/jre/lib/rt.jar");
+    }
+
+    // Differs from common mock JDK only by one additional 'nonExistingMethod' in Collection and constructor from Double in Throwable
+    // It's needed to test the way we load additional built-ins members that neither in black nor white lists
+    public static File findMockJdkRtModified() {
+        return new File(getHomeDirectory(), "compiler/testData/mockJDKModified/rt.jar");
+    }
+
+    public static File findAndroidApiJar() {
+        String androidJarProp = System.getProperty("android.jar");
+        File androidJarFile = androidJarProp == null ? null : new File(androidJarProp);
+        if (androidJarFile == null || !androidJarFile.isFile()) {
+            throw new RuntimeException(
+                    "Unable to get a valid path from 'android.jar' property (" +
+                    androidJarProp +
+                    "), please point it to the 'android.jar' file location");
+        }
+        return androidJarFile;
+    }
+
+    @NotNull
+    public static File findAndroidSdk() {
+        String androidSdkProp = System.getProperty("android.sdk");
+        File androidSdkDir = androidSdkProp == null ? null : new File(androidSdkProp);
+        if (androidSdkDir == null || !androidSdkDir.isDirectory()) {
+            throw new RuntimeException(
+                    "Unable to get a valid path from 'android.sdk' property (" +
+                    androidSdkProp +
+                    "), please point it to the android SDK location");
+        }
+        return androidSdkDir;
+    }
+
+    public static String getAndroidSdkSystemIndependentPath() {
+        return PathUtil.toSystemIndependentName(findAndroidSdk().getAbsolutePath());
+    }
+
+    public static File getAnnotationsJar() {
+        return new File(getHomeDirectory(), "compiler/testData/mockJDK/jre/lib/annotations.jar");
+    }
+
+    public static void mkdirs(@NotNull File file) {
+        if (file.isDirectory()) {
+            return;
+        }
+        if (!file.mkdirs()) {
+            if (file.exists()) {
+                throw new IllegalStateException("Failed to create " + file + ": file exists and not a directory");
+            }
+            throw new IllegalStateException("Failed to create " + file);
+        }
+    }
+}