FIR IDE: add tests for call resolve

generators/tests/org/jetbrains/kotlin/generators/tests/GenerateTests.kt

@@ -87,6 +87,7 @@ import org.jetbrains.kotlin.idea.fir.low.level.api.AbstractFirLazyResolveTest
 import org.jetbrains.kotlin.idea.fir.low.level.api.AbstractFirMultiModuleResolveTest
 import org.jetbrains.kotlin.idea.fir.AbstractKtDeclarationAndFirDeclarationEqualityChecker
 import org.jetbrains.kotlin.idea.folding.AbstractKotlinFoldingTest
+import org.jetbrains.kotlin.idea.frontend.api.fir.AbstractResolveCallTest
 import org.jetbrains.kotlin.idea.hierarchy.AbstractHierarchyTest
 import org.jetbrains.kotlin.idea.hierarchy.AbstractHierarchyWithLibTest
 import org.jetbrains.kotlin.idea.highlighter.*
@@ -923,20 +924,26 @@ fun main(args: Array<String>) {
         testClass<AbstractKtDeclarationAndFirDeclarationEqualityChecker> {
             model("ktDeclarationAndFirDeclarationEqualityChecker")
         }
+
+        testClass<AbstractResolveCallTest> {
+            model("analysisSession/resolveCall")
+        }
     }
 
-    testGroup("idea/idea-fir/tests", "idea/testData") {
+    testGroup("idea/idea-frontend-fir/idea-fir-low-level-api/tests", "idea/testData") {
         testClass<AbstractFirMultiModuleResolveTest> {
             model("fir/multiModule", recursive = false, extension = null)
         }
 
-            testClass<AbstractFirHighlightingTest> {
-            model("highlighter")
-        }
-
         testClass<AbstractFirLazyResolveTest> {
             model("fir/lazyResolve", extension = "test", singleClass = true, filenameStartsLowerCase = true)
         }
+    }
+
+    testGroup("idea/idea-fir/tests", "idea/testData") {
+        testClass<AbstractFirHighlightingTest> {
+            model("highlighter")
+        }
 
             testClass<AbstractFirReferenceResolveTest> {
                 model("resolve/references", pattern = KT_WITHOUT_DOTS_IN_NAME)

idea/idea-frontend-fir/build.gradle.kts

@@ -21,6 +21,8 @@ dependencies {
     compile(project(":idea:idea-core"))
 // </temp>
 
+    testCompile(intellijDep())
+    testCompile(intellijCoreDep())
     testCompile(toolsJar())
     testCompile(projectTests(":idea"))
     testCompile(projectTests(":compiler:tests-common"))

idea/idea-frontend-fir/idea-fir-low-level-api/tests/org/jetbrains/kotlin/idea/fir/low/level/api/FirLazyResolveTestGenerated.java

@@ -17,7 +17,7 @@ import java.util.regex.Pattern;
 /** This class is generated by {@link org.jetbrains.kotlin.generators.tests.TestsPackage}. DO NOT MODIFY MANUALLY */
 @SuppressWarnings("all")
 @TestMetadata("idea/testData/fir/lazyResolve")
-@TestDataPath("/")
+@TestDataPath("$PROJECT_ROOT")
 @RunWith(JUnit3RunnerWithInners.class)
 public class FirLazyResolveTestGenerated extends AbstractFirLazyResolveTest {
     private void runTest(String testDataFilePath) throws Exception {

idea/idea-frontend-fir/idea-fir-low-level-api/tests/org/jetbrains/kotlin/idea/fir/low/level/api/FirMultiModuleResolveTestGenerated.java

@@ -17,7 +17,7 @@ import java.util.regex.Pattern;
 /** This class is generated by {@link org.jetbrains.kotlin.generators.tests.TestsPackage}. DO NOT MODIFY MANUALLY */
 @SuppressWarnings("all")
 @TestMetadata("idea/testData/fir/multiModule")
-@TestDataPath("/")
+@TestDataPath("$PROJECT_ROOT")
 @RunWith(JUnit3RunnerWithInners.class)
 public class FirMultiModuleResolveTestGenerated extends AbstractFirMultiModuleResolveTest {
     private void runTest(String testDataFilePath) throws Exception {

idea/idea-frontend-fir/testData/analysisSession/resolveCall/functionCallInTheSameFile.kt

@@ -0,0 +1,7 @@
+fun function(a: Int) {}
+
+fun call() {
+    <selection>function(1)</selection>
+}
+
+// CALL: SimpleKtFunctionCallInfo: targetFunction = function(a: Int): IMPLICIT_TYPE

idea/idea-frontend-fir/testData/analysisSession/resolveCall/functionWithReceiverCall.kt

@@ -0,0 +1,7 @@
+fun String.function(a: Int) {}
+
+fun call() {
+   "str".<selection>function(1)</selection>
+}
+
+// CALL: SimpleKtFunctionCallInfo: targetFunction = function(<receiver> : String, a: Int): IMPLICIT_TYPE

idea/idea-frontend-fir/testData/analysisSession/resolveCall/functionWithReceiverSafeCall.kt

@@ -0,0 +1,7 @@
+fun String.function(a: Int) {}
+
+fun call() {
+    "str"?.<selection>function(1)</selection>
+}
+
+// CALL: SimpleKtFunctionCallInfo: targetFunction = function(<receiver> : String, a: Int): IMPLICIT_TYPE

idea/idea-frontend-fir/testData/analysisSession/resolveCall/implicitConstuctorCall.kt

@@ -0,0 +1,7 @@
+class A
+
+fun call() {
+    val a = <selection>A()</selection>
+}
+
+// CALL: KtImplicitPrimaryConstructorCallInfo: owner = Implicit constructor of A

idea/idea-frontend-fir/testData/analysisSession/resolveCall/implicitJavaConstuctorCall.external.java

@@ -0,0 +1,3 @@
+class A {
+
+}

idea/idea-frontend-fir/testData/analysisSession/resolveCall/implicitJavaConstuctorCall.kt

@@ -0,0 +1,6 @@
+
+fun call() {
+    val a = <selection>A()</selection>
+}
+
+// CALL: JavaImplicitPrimaryConstructorCallInfo: owner = Implicit constructor of A

idea/idea-frontend-fir/testData/analysisSession/resolveCall/javaFunctionCall.external.java

@@ -0,0 +1,3 @@
+class JavaClass {
+    void javaMethod() {}
+}

idea/idea-frontend-fir/testData/analysisSession/resolveCall/javaFunctionCall.kt

@@ -0,0 +1,6 @@
+fun call() {
+    val javaClass = JavaClass()
+    javaClass.<selection>javaMethod()</selection>
+}
+
+// CALL: SimpleJavaFunctionCallInfo: targetFunction = JavaClass.javaMethod(): void

idea/idea-frontend-fir/testData/analysisSession/resolveCall/variableAsFunction.kt

@@ -0,0 +1,5 @@
+fun call(x: (Int) -> String) {
+    <selection>x(1)</selection>
+}
+
+// CALL: VariableAsFunctionCallInfo: target = x, isSuspendCall = false

idea/idea-frontend-fir/testData/analysisSession/resolveCall/variableAsFunctionLikeCall.kt

@@ -0,0 +1,7 @@
+operator fun Int.invoke(): String {}
+
+fun call(x: Int) {
+    <selection>x()</selection>
+}
+
+// CALL: SimpleKtFunctionCallInfo: targetFunction = invoke(<receiver> : Int): String

idea/idea-frontend-fir/tests/org/jetbrains/kotlin/idea/frontend/api/fir/AbstractResolveCallTest.kt

@@ -0,0 +1,154 @@
+/*
+ * 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.frontend.api.fir
+
+import com.intellij.openapi.application.ApplicationManager
+import com.intellij.openapi.application.runReadAction
+import com.intellij.openapi.editor.CaretState
+import com.intellij.openapi.util.TextRange
+import com.intellij.openapi.util.io.FileUtil
+import com.intellij.openapi.vfs.VirtualFile
+import com.intellij.psi.PsiClass
+import com.intellij.psi.PsiElement
+import com.intellij.psi.PsiMethod
+import com.intellij.psi.PsiParameter
+import com.intellij.testFramework.LightPlatformTestCase
+import org.intellij.plugins.relaxNG.compact.psi.util.PsiFunction
+import org.jetbrains.kotlin.idea.frontend.api.CallInfo
+import org.jetbrains.kotlin.idea.refactoring.fqName.getKotlinFqName
+import org.jetbrains.kotlin.idea.test.KotlinLightCodeInsightTestCase
+import org.jetbrains.kotlin.idea.test.PluginTestCaseBase
+import org.jetbrains.kotlin.idea.util.application.runWriteAction
+import org.jetbrains.kotlin.psi.*
+import org.jetbrains.kotlin.psi.psiUtil.elementsInRange
+import org.jetbrains.kotlin.test.InTextDirectivesUtils
+import org.jetbrains.kotlin.test.KotlinTestUtils
+import java.io.File
+import kotlin.reflect.KProperty1
+import kotlin.reflect.full.memberProperties
+import kotlin.reflect.full.primaryConstructor
+import kotlin.reflect.jvm.javaGetter
+
+
+abstract class AbstractResolveCallTest : @Suppress("DEPRECATION") KotlinLightCodeInsightTestCase() {
+    override fun getTestDataPath(): String = KotlinTestUtils.getHomeDirectory() + "/"
+
+    protected fun doTest(path: String) {
+        File(path).getExternalFiles().forEach(::addFile)
+        configureByFile(path)
+        val elements = editor.caretModel.caretsAndSelections.map { selection ->
+            getSingleSelectedElement(selection)
+        }
+        val callInfos = executeOnPooledThreadInReadAction {
+            val analysisSession = FirAnalysisSession(file as KtFile)
+            elements.map { element ->
+                when (element) {
+                    is KtCallExpression -> analysisSession.resolveCall(element)
+                    is KtBinaryExpression -> analysisSession.resolveCall(element)
+                    else -> error("Selected should be either KtCallExpression or KtBinaryExpression but was $element")
+                }
+            }
+        }
+        if (callInfos.isEmpty()) {
+            error("There are should be at least one call selected")
+        }
+
+        val textWithoutLatestComments = run {
+            val rawText = File(path).readText()
+            """(?m)^// CALL:\s.*$""".toRegex().replace(rawText, "").trimEnd()
+        }
+        val actualText = buildString {
+            append(textWithoutLatestComments)
+            append("\n\n")
+            callInfos.joinTo(this, separator = "\n") { info ->
+                "// CALL: ${info?.stringRepresentation()}"
+            }
+        }
+        KotlinTestUtils.assertEqualsToFile(File(path), actualText)
+    }
+
+
+    private fun getSingleSelectedElement(selection: CaretState): PsiElement {
+        val selectionRange = selection.getTextRange()
+        val elements = file.elementsInRange(selectionRange)
+        if (elements.size != 1) {
+            val selectionText = file.text.substring(selectionRange.startOffset, selectionRange.endOffset)
+            error("Single element should be found for selection `$selectionText`, but $elements were found")
+        }
+        return elements.first()
+    }
+
+    private fun CaretState.getTextRange() = TextRange.create(
+        editor.logicalPositionToOffset(selectionStart!!),
+        editor.logicalPositionToOffset(selectionEnd!!)
+    )
+
+    private fun addFile(file: File) {
+        addFile(FileUtil.loadFile(file, /* convertLineSeparators = */true), file.name)
+    }
+
+    private fun addFile(text: String, fileName: String) {
+        runWriteAction {
+            val virtualDir = LightPlatformTestCase.getSourceRoot()!!
+            val virtualFile = virtualDir.createChildData(null, fileName)
+            virtualFile.getOutputStream(null)!!.writer().use { it.write(text) }
+        }
+    }
+}
+
+private fun <R> executeOnPooledThreadInReadAction(action: () -> R): R =
+    ApplicationManager.getApplication().executeOnPooledThread<R> { runReadAction(action) }.get()
+
+private fun File.getExternalFiles(): List<File> {
+    val directory = parentFile
+    val externalFileName = "${nameWithoutExtension}.external"
+    return directory.listFiles { _, name ->
+        name == "$externalFileName.kt" || name == "$externalFileName.java"
+    }!!.filterNotNull()
+}
+
+private fun CallInfo.stringRepresentation(): String {
+    fun Any.stringValue(): String? = when (this) {
+        is PsiMethod -> buildString {
+            append(getKotlinFqName()!!)
+            @Suppress("UnstableApiUsage")
+            parameters.joinTo(this, prefix = "(", postfix = ")") { parameter ->
+                "${parameter.name}: ${(parameter as PsiParameter).typeElement!!.text}"
+            }
+            append(": ${returnTypeElement!!.text}")
+        }
+        is KtFunction -> buildString {
+            append(getKotlinFqName()!!)
+            append("(")
+            receiverTypeReference?.let { receiver ->
+                append("<receiver> : ${receiver.text}")
+                if (valueParameters.isNotEmpty()) append(", ")
+            }
+            valueParameters.joinTo(this,) { parameter ->
+                "${parameter.name}: ${parameter.typeReference!!.text}"
+            }
+            append(")")
+            append(": ${typeReference?.text ?: "IMPLICIT_TYPE"}")
+        }
+        is KtClass -> "Implicit constructor of ${getKotlinFqName()!!}"
+        is PsiClass -> "Implicit constructor of ${getKotlinFqName()!!}"
+        is KtParameter -> name!!
+        is Boolean -> toString()
+        else -> error("unexpected parameter type ${this::class}")
+    }
+
+    val callInfoClass = this::class
+    return buildString {
+        append(callInfoClass.simpleName!!)
+        append(": ")
+        val propertyByName = callInfoClass.memberProperties.associateBy(KProperty1<*, *>::name)
+        callInfoClass.primaryConstructor!!.parameters.joinTo(this) { parameter ->
+            val value = propertyByName[parameter.name]!!.javaGetter!!(this@stringRepresentation)?.stringValue()
+            "${parameter.name!!} = $value"
+        }
+    }
+}
+

idea/idea-frontend-fir/tests/org/jetbrains/kotlin/idea/frontend/api/fir/ResolveCallTestGenerated.java

@@ -0,0 +1,70 @@
+/*
+ * 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.frontend.api.fir;
+
+import com.intellij.testFramework.TestDataPath;
+import org.jetbrains.kotlin.test.JUnit3RunnerWithInners;
+import org.jetbrains.kotlin.test.KotlinTestUtils;
+import org.jetbrains.kotlin.test.TestMetadata;
+import org.junit.runner.RunWith;
+
+import java.io.File;
+import java.util.regex.Pattern;
+
+/** This class is generated by {@link org.jetbrains.kotlin.generators.tests.TestsPackage}. DO NOT MODIFY MANUALLY */
+@SuppressWarnings("all")
+@TestMetadata("idea/idea-frontend-fir/testData/analysisSession/resolveCall")
+@TestDataPath("$PROJECT_ROOT")
+@RunWith(JUnit3RunnerWithInners.class)
+public class ResolveCallTestGenerated extends AbstractResolveCallTest {
+    private void runTest(String testDataFilePath) throws Exception {
+        KotlinTestUtils.runTest(this::doTest, this, testDataFilePath);
+    }
+
+    public void testAllFilesPresentInResolveCall() throws Exception {
+        KotlinTestUtils.assertAllTestsPresentByMetadataWithExcluded(this.getClass(), new File("idea/idea-frontend-fir/testData/analysisSession/resolveCall"), Pattern.compile("^(.+)\\.kt$"), null, true);
+    }
+
+    @TestMetadata("functionCallInTheSameFile.kt")
+    public void testFunctionCallInTheSameFile() throws Exception {
+        runTest("idea/idea-frontend-fir/testData/analysisSession/resolveCall/functionCallInTheSameFile.kt");
+    }
+
+    @TestMetadata("functionWithReceiverCall.kt")
+    public void testFunctionWithReceiverCall() throws Exception {
+        runTest("idea/idea-frontend-fir/testData/analysisSession/resolveCall/functionWithReceiverCall.kt");
+    }
+
+    @TestMetadata("functionWithReceiverSafeCall.kt")
+    public void testFunctionWithReceiverSafeCall() throws Exception {
+        runTest("idea/idea-frontend-fir/testData/analysisSession/resolveCall/functionWithReceiverSafeCall.kt");
+    }
+
+    @TestMetadata("implicitConstuctorCall.kt")
+    public void testImplicitConstuctorCall() throws Exception {
+        runTest("idea/idea-frontend-fir/testData/analysisSession/resolveCall/implicitConstuctorCall.kt");
+    }
+
+    @TestMetadata("implicitJavaConstuctorCall.kt")
+    public void testImplicitJavaConstuctorCall() throws Exception {
+        runTest("idea/idea-frontend-fir/testData/analysisSession/resolveCall/implicitJavaConstuctorCall.kt");
+    }
+
+    @TestMetadata("javaFunctionCall.kt")
+    public void testJavaFunctionCall() throws Exception {
+        runTest("idea/idea-frontend-fir/testData/analysisSession/resolveCall/javaFunctionCall.kt");
+    }
+
+    @TestMetadata("variableAsFunction.kt")
+    public void testVariableAsFunction() throws Exception {
+        runTest("idea/idea-frontend-fir/testData/analysisSession/resolveCall/variableAsFunction.kt");
+    }
+
+    @TestMetadata("variableAsFunctionLikeCall.kt")
+    public void testVariableAsFunctionLikeCall() throws Exception {
+        runTest("idea/idea-frontend-fir/testData/analysisSession/resolveCall/variableAsFunctionLikeCall.kt");
+    }
+}