Field modifiers correction in Spring generated test classes #2325 (#2377)

Correct field modifiers and locate setUp and tearDown methods under test methods

Author: tepa46

utbot-framework/src/main/kotlin/org/utbot/framework/codegen/domain/models/CgElement.kt

@@ -173,7 +173,7 @@ class CgFieldDeclaration(
     val ownerClassId: ClassId,
     val declaration: CgDeclaration,
     val annotation: CgAnnotation? = null,
-    val visibility: VisibilityModifier = VisibilityModifier.PUBLIC,
+    val visibility: VisibilityModifier = VisibilityModifier.PRIVATE,
 ) : CgElement
 
 /**

utbot-framework/src/main/kotlin/org/utbot/framework/codegen/tree/CgAbstractSpringTestClassConstructor.kt

@@ -36,8 +36,6 @@ abstract class CgAbstractSpringTestClassConstructor(context: CgContext):
             fields += constructClassFields(testClassModel)
             clearUnwantedVariableModels()
 
-            methodRegions += constructAdditionalMethods()
-
             for ((testSetIndex, testSet) in testClassModel.methodTestSets.withIndex()) {
                 updateCurrentExecutable(testSet.executableId)
                 withTestSetIdScope(testSetIndex) {
@@ -50,6 +48,8 @@ abstract class CgAbstractSpringTestClassConstructor(context: CgContext):
                 }
             }
 
+            methodRegions += constructAdditionalMethods()
+
             if (currentTestClass == outerMostTestClass) {
                 val utilEntities = collectUtilEntities()
                 // If utilMethodProvider is TestClassUtilMethodProvider, then util entities should be declared