Add comments and rollback test name

src/main/scala/io/qbeast/spark/internal/sources/catalog/QbeastCatalog.scala

@@ -44,6 +44,10 @@ class QbeastCatalog[T <: TableCatalog with SupportsNamespaces]
 
   private var catalogName: String = null
 
+  /**
+   * Gets the delegated catalog of the session
+   * @return
+   */
   private def getDelegatedCatalog(): T = {
     val sessionCatalog = delegatedCatalog match {
       case null =>
@@ -54,6 +58,17 @@ class QbeastCatalog[T <: TableCatalog with SupportsNamespaces]
     sessionCatalog.asInstanceOf[T]
   }
 
+  /**
+   * Gets the session catalog depending on provider properties, if any
+   *
+   * The intention is to include the different catalog providers
+   * while we add the integrations with the formats.
+   * For example, for "delta" provider it will return a DeltaCatalog instance.
+   *
+   * In this way, users may only need to instantiate one single unified catalog.
+   * @param properties the properties with the provider parameter
+   * @return
+   */
   private def getSessionCatalog(properties: Map[String, String] = Map.empty): T = {
     properties.get("provider") match {
       case Some("delta") => deltaCatalog.asInstanceOf[T]
@@ -224,6 +239,7 @@ class QbeastCatalog[T <: TableCatalog with SupportsNamespaces]
   override def initialize(name: String, options: CaseInsensitiveStringMap): Unit = {
     // Initialize the catalog with the corresponding name
     this.catalogName = name
+    // Initialize the catalog in any other provider that we can integrate with
     this.deltaCatalog.initialize(name, options)
   }
 
@@ -233,6 +249,7 @@ class QbeastCatalog[T <: TableCatalog with SupportsNamespaces]
     // Check if the delegating catalog has Table and SupportsNamespace properties
     if (delegate.isInstanceOf[TableCatalog] && delegate.isInstanceOf[SupportsNamespaces]) {
       this.delegatedCatalog = delegate
+      // Set delegated catalog in any other provider that we can integrate with
       this.deltaCatalog.setDelegateCatalog(delegate)
     } else throw new IllegalArgumentException("Invalid session catalog: " + delegate)
   }

src/test/scala/io/qbeast/spark/internal/sources/catalog/QbeastCatalogIntegrationTest.scala

@@ -7,7 +7,7 @@ import org.apache.spark.sql.AnalysisException
 class QbeastCatalogIntegrationTest extends QbeastIntegrationTestSpec with CatalogTestSuite {
 
   "QbeastCatalog" should
-    "coexist with Delta Catalog" in withTmpDir(tmpDir =>
+    "coexist with Delta tables" in withTmpDir(tmpDir =>
       withExtendedSpark(sparkConf = new SparkConf()
         .setMaster("local[8]")
         .set("spark.sql.extensions", "io.qbeast.spark.internal.QbeastSparkSessionExtension")