/**
* Copyright (c) 2013, impossibl.com
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of impossibl.com nor the names of its contributors may
* be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* POSSIBILITY OF SUCH DAMAGE.
*/
/*-------------------------------------------------------------------------
*
* Copyright (c) 2004-2011, PostgreSQL Global Development Group
*
*
*-------------------------------------------------------------------------
*/
package com.impossibl.postgres.jdbc;
import com.impossibl.postgres.api.jdbc.PGConnection;
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.SQLException;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
/*
* TestCase to test the internal functionality of
* org.postgresql.jdbc2.DatabaseMetaData's various properties.
* Methods which return a ResultSet are tested elsewhere.
* This avoids a complicated setUp/tearDown for something like
* assertTrue(dbmd.nullPlusNonNullIsNull());
*/
@RunWith(JUnit4.class)
public class DatabaseMetaDataPropertiesTest {
private Connection con;
@Before
public void before() throws Exception {
con = TestUtil.openDB();
}
@After
public void after() throws Exception {
TestUtil.closeDB(con);
}
/*
* The spec says this may return null, but we always do!
*/
@Test
public void testGetMetaData() throws SQLException {
DatabaseMetaData dbmd = con.getMetaData();
assertNotNull(dbmd);
}
/*
* Test default capabilities
*/
@Test
public void testCapabilities() throws SQLException {
DatabaseMetaData dbmd = con.getMetaData();
assertNotNull(dbmd);
assertTrue(dbmd.allProceduresAreCallable());
assertTrue(dbmd.allTablesAreSelectable()); // not true all the time
// This should always be false for postgresql (at least for 7.x)
assertTrue(!dbmd.isReadOnly());
// we support multiple resultsets via multiple statements in one execute()
// now
assertTrue(dbmd.supportsMultipleResultSets());
// yes, as multiple backends can have transactions open
assertTrue(dbmd.supportsMultipleTransactions());
assertTrue(dbmd.supportsMinimumSQLGrammar());
assertTrue(dbmd.supportsCoreSQLGrammar());
assertTrue(!dbmd.supportsExtendedSQLGrammar());
assertTrue(dbmd.supportsANSI92EntryLevelSQL());
assertTrue(!dbmd.supportsANSI92IntermediateSQL());
assertTrue(!dbmd.supportsANSI92FullSQL());
assertTrue(dbmd.supportsIntegrityEnhancementFacility());
}
@Test
public void testJoins() throws SQLException {
DatabaseMetaData dbmd = con.getMetaData();
assertNotNull(dbmd);
assertTrue(dbmd.supportsOuterJoins());
assertTrue(dbmd.supportsFullOuterJoins());
assertTrue(dbmd.supportsLimitedOuterJoins());
}
@Test
public void testCursors() throws SQLException {
DatabaseMetaData dbmd = con.getMetaData();
assertNotNull(dbmd);
//TODO: reconcile against mainstream driver
// assertTrue(!dbmd.supportsPositionedDelete());
// assertTrue(!dbmd.supportsPositionedUpdate());
}
@Test
public void testValues() throws SQLException {
DatabaseMetaData dbmd = con.getMetaData();
assertNotNull(dbmd);
int indexMaxKeys = dbmd.getMaxColumnsInIndex();
assertEquals(32, indexMaxKeys);
}
@Test
public void testNulls() throws SQLException {
DatabaseMetaData dbmd = con.getMetaData();
assertNotNull(dbmd);
assertTrue(!dbmd.nullsAreSortedAtStart());
assertTrue(!dbmd.nullsAreSortedAtEnd());
assertTrue(dbmd.nullsAreSortedHigh());
assertTrue(!dbmd.nullsAreSortedLow());
assertTrue(dbmd.nullPlusNonNullIsNull());
assertTrue(dbmd.supportsNonNullableColumns());
}
@Test
public void testLocalFiles() throws SQLException {
DatabaseMetaData dbmd = con.getMetaData();
assertNotNull(dbmd);
assertTrue(!dbmd.usesLocalFilePerTable());
assertTrue(!dbmd.usesLocalFiles());
}
@Test
public void testIdentifiers() throws SQLException {
DatabaseMetaData dbmd = con.getMetaData();
assertNotNull(dbmd);
assertTrue(!dbmd.supportsMixedCaseIdentifiers()); // always false
assertTrue(dbmd.supportsMixedCaseQuotedIdentifiers()); // always true
assertTrue(!dbmd.storesUpperCaseIdentifiers()); // always false
assertTrue(dbmd.storesLowerCaseIdentifiers()); // always true
assertTrue(!dbmd.storesUpperCaseQuotedIdentifiers()); // always false
assertTrue(!dbmd.storesLowerCaseQuotedIdentifiers()); // always false
assertTrue(!dbmd.storesMixedCaseQuotedIdentifiers()); // always false
assertTrue(dbmd.getIdentifierQuoteString().equals("\""));
}
@Test
public void testTables() throws SQLException {
DatabaseMetaData dbmd = con.getMetaData();
assertNotNull(dbmd);
// we can add columns
assertTrue(dbmd.supportsAlterTableWithAddColumn());
// we can drop columns
assertTrue(dbmd.supportsAlterTableWithDropColumn());
}
@Test
public void testSelect() throws SQLException {
DatabaseMetaData dbmd = con.getMetaData();
assertNotNull(dbmd);
// yes we can?: SELECT col a FROM a;
assertTrue(dbmd.supportsColumnAliasing());
// yes we can have expressions in ORDERBY
assertTrue(dbmd.supportsExpressionsInOrderBy());
// Yes, an ORDER BY clause can contain columns that are not in the
// SELECT clause.
assertTrue(dbmd.supportsOrderByUnrelated());
assertTrue(dbmd.supportsGroupBy());
assertTrue(dbmd.supportsGroupByUnrelated());
assertTrue(dbmd.supportsGroupByBeyondSelect()); // needs checking
}
@Test
public void testDBParams() throws SQLException {
DatabaseMetaData dbmd = con.getMetaData();
assertNotNull(dbmd);
assertTrue(dbmd.getURL().equals(TestUtil.getURL()));
assertTrue(dbmd.getUserName().equals(TestUtil.getUser()));
}
@Test
public void testDbProductDetails() throws SQLException {
assertTrue(con instanceof PGConnection);
DatabaseMetaData dbmd = con.getMetaData();
assertNotNull(dbmd);
assertTrue(dbmd.getDatabaseProductName().equals("PostgreSQL"));
}
@Test
public void testDriverVersioning() throws SQLException {
DatabaseMetaData dbmd = con.getMetaData();
assertNotNull(dbmd);
assertTrue(dbmd.getDriverVersion().equals(PGDriver.VERSION.toString()));
assertTrue(dbmd.getDriverMajorVersion() == PGDriver.VERSION.getMajor());
assertTrue(dbmd.getDriverMinorVersion() == PGDriver.VERSION.getMinor());
}
}