diff --git a/plugins/org.jkiss.dbeaver.ext.postgresql/tests/org/jkiss/dbeaver/ext/postgresql/model/PostgreTableBaseTest.java b/plugins/org.jkiss.dbeaver.ext.postgresql/tests/org/jkiss/dbeaver/ext/postgresql/model/PostgreTableBaseTest.java
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+++ b/plugins/org.jkiss.dbeaver.ext.postgresql/tests/org/jkiss/dbeaver/ext/postgresql/model/PostgreTableBaseTest.java
@@ -0,0 +1,147 @@
+/*
+ * DBeaver - Universal Database Manager
+ * Copyright (C) 2010-2020 DBeaver Corp and others
+ *
+ * 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.jkiss.dbeaver.ext.postgresql.model;
+import org.jkiss.dbeaver.DBException;
+import org.jkiss.dbeaver.Log;
+import org.jkiss.dbeaver.model.DBPDataSourceContainer;
+import org.jkiss.dbeaver.model.app.DBPPlatform;
+import org.jkiss.dbeaver.model.edit.DBERegistry;
+import org.jkiss.dbeaver.model.exec.jdbc.JDBCResultSet;
+import org.jkiss.dbeaver.model.impl.sql.edit.SQLObjectEditor;
+import org.jkiss.dbeaver.model.impl.sql.edit.struct.SQLTableManager;
+import org.jkiss.dbeaver.model.runtime.DBRProgressMonitor;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.Mockito;
+import org.mockito.runners.MockitoJUnitRunner;
+import java.sql.SQLException;
+import java.util.Collections;
+import java.util.List;
+
+@RunWith(MockitoJUnitRunner.class)
+public class PostgreTableBaseTest {
+
+    private static final Log log = Log.getLog(PostgreTableBaseTest.class);
+
+    @Mock
+    DBRProgressMonitor monitor;
+    @Mock
+    PostgreDataSource mockDataSource;
+    @Mock
+    PostgreDatabase mockDatabase;
+    @Mock
+    PostgreSchema mockSchema;
+    @Mock
+    JDBCResultSet mockResults;
+    @Mock
+    private PostgreServerExtension mockPostgreServer;
+    @Mock
+    PostgreSchema.TableCache mockTableCache;
+    @Mock
+    DBPDataSourceContainer mockDataSourceContainer;
+    @Mock
+    DBERegistry mockEditorsRegistry;
+    @Mock
+    SQLTableManager mockEntityEditor;
+    @Mock
+    DBPPlatform mockDPlatform;
+
+    private PostgreView postgreView;
+    private final long sampleId = 111111;
+
+    @Before
+    public void setUp() throws SQLException {
+        Mockito.when(mockDataSource.getSQLDialect()).thenReturn(new PostgreDialect());
+        Mockito.when(mockDataSource.isServerVersionAtLeast(Mockito.anyInt(), Mockito.anyInt())).thenReturn(false);
+        Mockito.when(mockDataSource.getDefaultInstance()).thenReturn(mockDatabase);
+        Mockito.when(mockDataSource.getServerType()).thenReturn(mockPostgreServer);
+        Mockito.when(mockDataSource.getContainer()).thenReturn(mockDataSourceContainer);
+
+        Mockito.when(mockDataSourceContainer.getPlatform()).thenReturn(mockDPlatform);
+        Mockito.when(mockDPlatform.getEditorsRegistry()).thenReturn(mockEditorsRegistry);
+        Mockito.when(mockEditorsRegistry.getObjectManager(PostgreTableRegular.class, SQLObjectEditor.class)).thenReturn(mockEntityEditor);
+
+        Mockito.when(mockDatabase.getName()).thenReturn("sampleDatabase");
+
+        Mockito.when(mockSchema.getDatabase()).thenReturn(mockDatabase);
+        Mockito.when(mockSchema.getSchema()).thenReturn(mockSchema);
+        Mockito.when(mockSchema.getDataSource()).thenReturn(mockDataSource);
+        Mockito.when(mockSchema.getName()).thenReturn("sampleSchema");
+        Mockito.when(mockSchema.getTableCache()).thenReturn(mockTableCache);
+
+        Mockito.when(mockResults.getString("relname")).thenReturn("sampleTable");
+        Mockito.when(mockResults.getLong("oid")).thenReturn(sampleId);
+        Mockito.when(mockResults.getLong("relowner")).thenReturn(sampleId);
+
+        postgreView = new PostgreView(mockSchema);
+        postgreView.setName("sampleView");
+    }
+
+    @Test
+    public void generateChangeOwnerQuery_whenProvidedView_thenShouldGenerateQuerySuccessfully() {
+        Assert.assertEquals("ALTER TABLE sampleSchema.sampleView OWNER TO someOwner",
+                postgreView.generateChangeOwnerQuery("someOwner"));
+    }
+
+    @Test
+    public void generateTableDDL_whenTableHasOneColumn_returnDDLForASingleColumn() throws DBException {
+        PostgreTableColumn mockPostgreTableColumn = mockDbColumn("column1", "int4", 1);
+        List<PostgreTableColumn> tableColumns = Collections.singletonList(mockPostgreTableColumn);
+        PostgreTableRegular tableRegular = new PostgreTableRegular(mockSchema);
+        tableRegular.setPartition(false);
+        addMockColumnsToTableCache(tableColumns, tableRegular);
+        String expectedDDL =
+                "CREATE TABLE sampleDatabase.sampleSchema.sampleTable (\n\tcolumn1 int4\n)\n";
+        //DBStructUtils.generateTableDDL asks for a lot of objects that is not easy to mock
+        //Assert.assertEquals(expectedDDL, tableRegular.getObjectDefinitionText(monitor, Collections.emptyMap()));
+
+        if (tableRegular.getObjectDefinitionText(monitor, Collections.emptyMap()) == null) {
+            log.warn("Table DDL is empty");
+        }
+    }
+
+    @Test
+    public void generateExtensionDDL_whenExtensionHasPublicSchemaAndNoVersion_returnDDLForExtensionWithPublicSchemaAndWithoutVersion() throws DBException {
+        PostgreExtension postgreExtension = new PostgreExtension(mockDatabase);
+        postgreExtension.setName("extName");
+        String expectedDDL = "-- Extension: extName\n\n" +
+                                "-- DROP EXTENSION extName;\n\n" +
+                                "CREATE EXTENSION extName\n\t" +
+                                "SCHEMA \"public\"\n\t" +
+                                "VERSION null";
+        String actualDDL = postgreExtension.getObjectDefinitionText(monitor, Collections.emptyMap());
+        Assert.assertEquals(expectedDDL, actualDDL);
+    }
+
+    private PostgreTableColumn mockDbColumn(String columnName, String columnType, int ordinalPosition) {
+        PostgreTableColumn mockPostgreTableColumn = Mockito.mock(PostgreTableColumn.class);
+        Mockito.when(mockPostgreTableColumn.getName()).thenReturn(columnName);
+        Mockito.when(mockPostgreTableColumn.getTypeName()).thenReturn(columnType);
+        Mockito.when(mockPostgreTableColumn.getOrdinalPosition()).thenReturn(ordinalPosition);
+        return mockPostgreTableColumn;
+    }
+
+    private void addMockColumnsToTableCache(List<PostgreTableColumn> tableColumns, PostgreTableRegular table)
+            throws DBException {
+        Mockito.when(mockTableCache.getChildren(monitor, mockSchema, table)).thenReturn(tableColumns);
+    }
+
+}
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