Python test generation failed in PythonCodeGenerator initialization

[tamarinvs19]

Description

Now there is a problems with CodeGeneration class: when we create child PythonCodeGenerator we initialize field context twice but at first we assign to this field CgContext with default CgLanguageAssistant (it it JavaLanguageAssistant) and it failing during initialization of field outerMostTestClass in CgContext because of invalid java function call on python oriented class.

To Reproduce

Steps to reproduce the behavior:

1. Run the python project in IntelliJ Idea
2. Try to use plugin to generate tests

Expected behavior

Tests are supposed to be generated.

Actual behavior

No one test. There are an error in logs.

Visual proofs (screenshots, logs, images)

Example code

def div(a, b):
    return a / b

Result log:

ava.lang.ClassNotFoundException: TopLevelFunction PluginClassLoader(plugin=PluginDescriptor(name=UnitTestBot, id=org.utbot.intellij.plugin.id, descriptorPath=plugin.xml, path=~/Projects/utbot3/UTBotJava/utbot-intellij/build/idea-sandbox/plugins/utbot-intellij, version=2023.01-SNAPSHOT, package=null, isBundled=false), packagePrefix=null, instanceId=150, state=active)
	at com.intellij.ide.plugins.cl.PluginClassLoader.loadClass(PluginClassLoader.java:214)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
	at org.utbot.framework.plugin.api.util.IdUtilKt.getJClass(IdUtil.kt:102)
	at org.utbot.framework.plugin.api.ClassId.getSimpleNameWithEnclosingClasses(Api.kt:870)
	at org.utbot.framework.plugin.api.util.IdUtilKt.getNameWithEnclosingClassesAsContigousString(IdUtil.kt:213)
	at org.utbot.framework.plugin.api.utils.CodeLanguageUtilsKt.testClassNameGenerator(CodeLanguageUtils.kt:12)
	at org.utbot.framework.codegen.services.language.JavaCgLanguageAssistant.testClassName(JavaCgLanguageAssistant.kt:29)
	at org.utbot.framework.codegen.domain.context.CgContext$outerMostTestClass$2.invoke(CgContext.kt:496)
	at org.utbot.framework.codegen.domain.context.CgContext$outerMostTestClass$2.invoke(CgContext.kt:495)
	at kotlin.SynchronizedLazyImpl.getValue(LazyJVM.kt:74)
	at org.utbot.framework.codegen.domain.context.CgContext.getOuterMostTestClass(CgContext.kt:495)
	at org.utbot.framework.codegen.domain.context.CgContext.<init>(CgContext.kt:582)
	at org.utbot.framework.codegen.domain.context.CgContext.<init>(CgContext.kt:432)
	at org.utbot.framework.codegen.CodeGenerator.<init>(CodeGenerator.kt:45)
	at org.utbot.framework.codegen.CodeGenerator.<init>(CodeGenerator.kt:26)
	at org.utbot.python.framework.codegen.model.PythonCodeGenerator.<init>(PythonCodeGenerator.kt:51)
	at org.utbot.python.framework.codegen.model.PythonCodeGenerator.<init>(PythonCodeGenerator.kt:38)
	at org.utbot.python.code.PythonCodeGenerator.generateMypyCheckCode(CodeGen.kt:54)
	at org.utbot.python.typing.MypyAnnotations$getCheckedByMypyAnnotations$1.invokeSuspend(MypyAnnotations.kt:34)
	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
	at kotlin.sequences.SequenceBuilderIterator.hasNext(SequenceBuilder.kt:129)
	at org.utbot.python.PythonTestCaseGenerator.generate(PythonTestCaseGenerator.kt:180)
	at org.utbot.python.PythonTestGenerationProcessor.processTestGeneration(PythonTestGenerationProcessor.kt:100)
	at org.utbot.python.PythonTestGenerationProcessor.processTestGeneration$default(PythonTestGenerationProcessor.kt:34)
	at org.utbot.intellij.plugin.language.python.PythonDialogProcessor$createTests$1.run(PythonDialogProcessor.kt:140)
	at com.intellij.openapi.progress.impl.CoreProgressManager.startTask(CoreProgressManager.java:442)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.startTask(ProgressManagerImpl.java:114)
	at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcessWithProgressAsynchronously$5(CoreProgressManager.java:493)
	at com.intellij.openapi.progress.impl.ProgressRunner.lambda$submit$3(ProgressRunner.java:252)
	at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcess$2(CoreProgressManager.java:188)
	at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$executeProcessUnderProgress$12(CoreProgressManager.java:608)
	at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:683)
	at com.intellij.openapi.progress.impl.CoreProgressManager.computeUnderProgress(CoreProgressManager.java:639)
	at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:607)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:60)
	at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:175)
	at com.intellij.openapi.progress.impl.ProgressRunner.lambda$submit$4(ProgressRunner.java:252)
	at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1768)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
	at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(Executors.java:702)
	at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(Executors.java:699)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
	at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1.run(Executors.java:699)
	at java.base/java.lang.Thread.run(Thread.java:833)