corrected ClassId.isAccessibleFrom behavior on arrays #743 (#744)

* corrected ClassId.isAccessibleFrom behavior on arrays #743

* Attempts to improve ClassIdUtil

Co-authored-by: Egor Kulikov <egor.k.kulikov@gmail.com>

Author: volivan239

utbot-framework/src/main/kotlin/org/utbot/framework/codegen/model/util/ClassIdUtil.kt

@@ -2,6 +2,7 @@ package org.utbot.framework.codegen.model.util
 
 import org.utbot.framework.plugin.api.ClassId
 import org.utbot.framework.plugin.api.util.id
+import org.utbot.framework.plugin.api.util.isArray
 
 /**
  * For now we will count class accessible if it is:
@@ -13,13 +14,19 @@ import org.utbot.framework.plugin.api.util.id
  * @param packageName name of the package we check accessibility from
  */
 infix fun ClassId.isAccessibleFrom(packageName: String): Boolean {
-    val isOuterClassAccessible = if (isNested) {
-        outerClass!!.id.isAccessibleFrom(packageName)
-    } else {
-        true
+
+    if (this.isLocal || this.isSynthetic) {
+        return false
     }
 
-    val isAccessibleFromPackageByModifiers = isPublic || (this.packageName == packageName && (isPackagePrivate || isProtected))
+    val outerClassId = outerClass?.id
+    if (outerClassId != null && !outerClassId.isAccessibleFrom(packageName)) {
+        return false
+    }
 
-    return isOuterClassAccessible && isAccessibleFromPackageByModifiers && !isLocal && !isSynthetic
+    return if (this.isArray) {
+        elementClassId!!.isAccessibleFrom(packageName)
+    } else {
+        isPublic || (this.packageName == packageName && (isPackagePrivate || isProtected))
+    }
 }