Fixed conversion test for H2 database

@@ -25,6 +25,7 @@ import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Test;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.jdbc.core.JdbcTemplate;
 import org.thingsboard.server.common.data.DataConstants;
 import org.thingsboard.server.common.data.Device;
 import org.thingsboard.server.common.data.EntityType;
@@ -45,6 +46,8 @@ import org.thingsboard.server.dao.attributes.AttributesService;
 import org.thingsboard.server.dao.model.sqlts.ts.TsKvEntity;
 import org.thingsboard.server.dao.rule.RuleChainService;
 import org.thingsboard.server.dao.timeseries.TimeseriesService;
+import org.thingsboard.server.dao.util.DaoTestUtil;
+import org.thingsboard.server.dao.util.SqlDbType;
 
 import java.util.*;
 import java.util.concurrent.ExecutionException;
@@ -60,6 +63,9 @@ public abstract class BaseEntityServiceTest extends AbstractServiceTest {
 
     private TenantId tenantId;
 
+    @Autowired
+    private JdbcTemplate template;
+
     @Before
     public void before() {
         Tenant tenant = new Tenant();
@@ -821,6 +827,10 @@ public abstract class BaseEntityServiceTest extends AbstractServiceTest {
                     .getLatest().get(EntityKeyType.TIME_SERIES).get("temperature").getValue());
         }
         List<String> deviceTemperatures = temperatures.stream().map(aDouble -> Double.toString(aDouble)).collect(Collectors.toList());
+        if (DaoTestUtil.getSqlDbType(template) == SqlDbType.H2) {
+            // in H2 double values are stored with E0 in the end of the string
+            loadedTemperatures = loadedTemperatures.stream().map(s -> s.substring(0, s.length() - 2)).collect(Collectors.toList());
+        }
         Assert.assertEquals(deviceTemperatures, loadedTemperatures);
 
         pageLink = new EntityDataPageLink(10, 0, null, sortOrder);
@@ -848,6 +858,10 @@ public abstract class BaseEntityServiceTest extends AbstractServiceTest {
                 entityData.getLatest().get(EntityKeyType.TIME_SERIES).get("temperature").getValue()).collect(Collectors.toList());
         List<String> deviceHighTemperatures = highTemperatures.stream().map(aDouble -> Double.toString(aDouble)).collect(Collectors.toList());
 
+        if (DaoTestUtil.getSqlDbType(template) == SqlDbType.H2) {
+            // in H2 double values are stored with E0 in the end of the string
+            loadedHighTemperatures = loadedHighTemperatures.stream().map(s -> s.substring(0, s.length() - 2)).collect(Collectors.toList());
+        }
         Assert.assertEquals(deviceHighTemperatures, loadedHighTemperatures);
 
         deviceService.deleteDevicesByTenantId(tenantId);

+/**
+ * Copyright © 2016-2020 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.util;
+
+import org.springframework.jdbc.core.JdbcTemplate;
+
+import java.sql.DriverManager;
+
+public class DaoTestUtil {
+    private static final String POSTGRES_DRIVER_CLASS = "org.postgresql.Driver";
+    private static final String H2_DRIVER_CLASS = "org.hsqldb.jdbc.JDBCDriver";
+
+
+    public static SqlDbType getSqlDbType(JdbcTemplate template){
+        try {
+            String driverName = DriverManager.getDriver(template.getDataSource().getConnection().getMetaData().getURL()).getClass().getName();
+            if (POSTGRES_DRIVER_CLASS.equals(driverName)) {
+                return SqlDbType.POSTGRES;
+            } else if (H2_DRIVER_CLASS.equals(driverName)) {
+                return SqlDbType.H2;
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
+}

+/**
+ * Copyright © 2016-2020 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.util;
+
+public enum SqlDbType {
+    POSTGRES, H2;
+}