[misc] correcting test, MySQL doesn't thrown warning for "select now() = 1"

Author: kalebaran

src/test/java/org/mariadb/jdbc/ConnectionTest.java

@@ -794,6 +794,7 @@ public void setReadonlyError() throws SQLException {
 
   @Test
   public void testWarnings() throws SQLException {
+    Assume.assumeTrue(isMariadbServer());
     Statement stmt = sharedConnection.createStatement();
     stmt.executeQuery("select now() = 1");
     SQLWarning warning = sharedConnection.getWarnings();

src/test/java/org/mariadb/jdbc/StatementTest.java

@@ -612,6 +612,7 @@ public void wrongParameterValues() throws SQLException {
 
   @Test
   public void testWarnings() throws SQLException {
+    Assume.assumeTrue(isMariadbServer());
     Statement stmt = sharedConnection.createStatement();
     stmt.executeQuery("select now() = 1");
     SQLWarning warning = stmt.getWarnings();