IndexNotReadyException thrown in IDEA with installed UnitTestBot plugin #273 (#586)

Author: Vassiliy-Kudryashov

utbot-intellij/src/main/kotlin/org/utbot/intellij/plugin/generator/CodeGenerationController.kt

@@ -264,7 +264,8 @@ object CodeGenerationController {
 
         val classUnderTest = testSets.first().method.clazz
 
-        val params = findMethodParams(classUnderTest, selectedMethods)
+        val params = DumbService.getInstance(model.project)
+            .runReadActionInSmartMode(Computable { findMethodParams(classUnderTest, selectedMethods) })
 
         val codeGenerator = CodeGenerator(
                 classUnderTest = classUnderTest.java,

utbot-intellij/src/main/kotlin/org/utbot/intellij/plugin/generator/UtTestsDialogProcessor.kt

@@ -12,9 +12,11 @@ import com.intellij.openapi.components.service
 import com.intellij.openapi.module.Module
 import com.intellij.openapi.progress.ProgressIndicator
 import com.intellij.openapi.progress.Task
+import com.intellij.openapi.project.DumbService
 import com.intellij.openapi.project.Project
 import com.intellij.openapi.roots.OrderEnumerator
 import com.intellij.openapi.ui.Messages
+import com.intellij.openapi.util.Computable
 import com.intellij.openapi.util.text.StringUtil
 import com.intellij.psi.PsiClass
 import com.intellij.psi.SyntheticElement
@@ -150,7 +152,9 @@ object UtTestsDialogProcessor {
                                             .filterWhen(UtSettings.skipTestGenerationForSyntheticMethods) {
                                                 it.member !is SyntheticElement
                                             }
-                                    findMethodsInClassMatchingSelected(clazz, srcMethods)
+                                    DumbService.getInstance(project).runReadActionInSmartMode(Computable {
+                                        findMethodsInClassMatchingSelected(clazz, srcMethods)
+                                    })
                                 }.executeSynchronously()
 
                                 val className = srcClass.name

utbot-intellij/src/main/kotlin/org/utbot/intellij/plugin/util/SignaturesHelper.kt

@@ -1,15 +1,18 @@
 package org.utbot.intellij.plugin.util
 
+import com.intellij.openapi.project.DumbService
+import com.intellij.openapi.project.Project
+import com.intellij.openapi.util.Computable
 import com.intellij.psi.PsiMethod
 import com.intellij.refactoring.util.classMembers.MemberInfo
 import kotlin.reflect.KFunction
 import kotlin.reflect.KParameter
 import kotlin.reflect.jvm.javaType
 
 fun MemberInfo.signature(): Signature =
-    (this.member as PsiMethod).signature()
+        (this.member as PsiMethod).signature()
 
-fun PsiMethod.signature() =
+private fun PsiMethod.signature() =
     Signature(this.name, this.parameterList.parameters.map {
         it.type.canonicalText
             .replace("...", "[]") //for PsiEllipsisType