[misc] test addition : ensure connection error SQLstate

Author: rusher

src/test/java/org/mariadb/jdbc/integration/ErrorTest.java

@@ -6,10 +6,8 @@
 import static org.junit.jupiter.api.Assertions.*;
 
 import java.sql.*;
-import org.junit.jupiter.api.AfterAll;
-import org.junit.jupiter.api.Assumptions;
-import org.junit.jupiter.api.BeforeAll;
-import org.junit.jupiter.api.Test;
+
+import org.junit.jupiter.api.*;
 
 public class ErrorTest extends Common {
 
@@ -146,4 +144,13 @@ public void deadLockInformation() throws SQLException {
       }
     }
   }
+  @Test
+  public void connectionErrorFormat() throws SQLException {
+    try {
+      DriverManager.getConnection("jdbc:mariadb://localhost:3000/db");
+      fail("Must have thrown an error");
+    } catch (SQLException e) {
+      assertEquals("08000", e.getSQLState());
+    }
+  }
 }