add skipping variant tests for older versions

Author: chernser

client-v2/src/test/java/com/clickhouse/client/datatypes/DataTypeTests.java

@@ -13,6 +13,7 @@
 import com.clickhouse.client.api.metadata.TableSchema;
 import com.clickhouse.client.api.query.GenericRecord;
 import com.clickhouse.data.ClickHouseDataType;
+import com.clickhouse.data.ClickHouseVersion;
 import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.NoArgsConstructor;
@@ -143,6 +144,10 @@ public static String tblCreateSQL(String table) {
 
     @Test(groups = {"integration"})
     public void testVariantWithSimpleDataTypes() throws Exception {
+        if (isVersionMatch("(,24.8]")) {
+            return;
+        }
+
         final String table = "test_variant_primitives";
         final DataTypesTestingPOJO sample = new DataTypesTestingPOJO();
 
@@ -384,6 +389,10 @@ public void testVariantWithTuple() throws Exception {
     }
 
     private void testVariantWith(String withWhat, String[] fields, Object[] values, String[] expectedStrValues) throws Exception {
+        if (isVersionMatch("(,24.8]")) {
+            return;
+        }
+
         String table = "test_variant_with_" + withWhat;
         String[] actualFields = new String[fields.length + 1];
         actualFields[0] = "rowId Int32";
@@ -417,4 +426,8 @@ public static String tableDefinition(String table, String... columns) {
         return sb.toString();
     }
 
+    public boolean isVersionMatch(String versionExpression) {
+        List<GenericRecord> serverVersion = client.queryAll("SELECT version()");
+        return ClickHouseVersion.of(serverVersion.get(0).getString(1)).check(versionExpression);
+    }
 }