Tests | Add tests for SQLServerConnection to improve code coverage

src/main/java/com/microsoft/sqlserver/jdbc/IOBuffer.java

@@ -3025,7 +3025,7 @@ void setDataLoggable(boolean value) {
         dataIsLoggable = value;
     }
 
-    SharedTimer getSharedTimer() {
+    SharedTimer getSharedTimer() throws SQLServerException {
         return con.getSharedTimer();
     }
 

src/main/java/com/microsoft/sqlserver/jdbc/SQLServerConnection.java

@@ -154,10 +154,13 @@ public class SQLServerConnection implements ISQLServerConnection, java.io.Serial
      * Return an existing cached SharedTimer associated with this Connection or create a new one.
      *
      * The SharedTimer will be released when the Connection is closed.
+     * 
+     * @throws SQLServerException
      */
-    SharedTimer getSharedTimer() {
+    SharedTimer getSharedTimer() throws SQLServerException {
         if (state == State.Closed) {
-            throw new IllegalStateException(SQLServerException.getErrString("R_connectionIsClosed"));
+            SQLServerException.makeFromDriverError(null, null, SQLServerException.getErrString("R_connectionIsClosed"),
+                    null, false);
         }
         if (null == sharedTimer) {
             this.sharedTimer = SharedTimer.getTimer();

src/main/java/com/microsoft/sqlserver/jdbc/SQLServerStatement.java

@@ -1133,7 +1133,9 @@ public final void setLargeMaxRows(long max) throws SQLServerException {
         // SQL server only supports integer limits for setting max rows.
         // If <max> is bigger than integer limits then throw an exception, otherwise call setMaxRows(int)
         if (max > Integer.MAX_VALUE) {
-            throw new UnsupportedOperationException(SQLServerException.getErrString("R_invalidMaxRows"));
+            MessageFormat form = new MessageFormat(SQLServerException.getErrString("R_invalidMaxRows"));
+            Object[] msgArgs = {max};
+            SQLServerException.makeFromDriverError(connection, this, form.format(msgArgs), null, true);
         }
         setMaxRows((int) max);
         loggerExternal.exiting(getClassNameLogging(), "setLargeMaxRows");