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/*-------------------------------------------------------------------------
*
* Copyright (c) 2004-2008, PostgreSQL Global Development Group
*
* IDENTIFICATION
* $PostgreSQL: pgjdbc/org/postgresql/test/jdbc2/DatabaseMetaDataPropertiesTest.java,v 1.10 2008/01/08 06:56:31 jurka Exp $
*
*-------------------------------------------------------------------------
*/
package org.postgresql.test.jdbc2;
import org.postgresql.test.TestUtil;
import junit.framework.TestCase;
import java.sql.*;
/*
* 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());
*/
public class DatabaseMetaDataPropertiesTest extends TestCase
{
private Connection con;
/*
* Constructor
*/
public DatabaseMetaDataPropertiesTest(String name)
{
super(name);
}
protected void setUp() throws Exception
{
con = TestUtil.openDB();
}
protected void tearDown() throws Exception
{
TestUtil.closeDB( con );
}
/*
* The spec says this may return null, but we always do!
*/
public void testGetMetaData() throws SQLException
{
DatabaseMetaData dbmd = con.getMetaData();
assertNotNull(dbmd);
}
/*
* Test default capabilities
*/
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());
if (TestUtil.haveMinimumServerVersion(con, "7.3"))
assertTrue(dbmd.supportsANSI92EntryLevelSQL());
else
assertTrue(!dbmd.supportsANSI92EntryLevelSQL());
assertTrue(!dbmd.supportsANSI92IntermediateSQL());
assertTrue(!dbmd.supportsANSI92FullSQL());
assertTrue(dbmd.supportsIntegrityEnhancementFacility());
}
public void testJoins() throws SQLException
{
DatabaseMetaData dbmd = con.getMetaData();
assertNotNull(dbmd);
assertTrue(dbmd.supportsOuterJoins());
assertTrue(dbmd.supportsFullOuterJoins());
assertTrue(dbmd.supportsLimitedOuterJoins());
}
public void testCursors() throws SQLException
{
DatabaseMetaData dbmd = con.getMetaData();
assertNotNull(dbmd);
assertTrue(!dbmd.supportsPositionedDelete());
assertTrue(!dbmd.supportsPositionedUpdate());
}
public void testValues() throws SQLException
{
DatabaseMetaData dbmd = con.getMetaData();
assertNotNull(dbmd);
int indexMaxKeys = dbmd.getMaxColumnsInIndex();
if (TestUtil.haveMinimumServerVersion(con, "7.3"))
{
assertEquals(32, indexMaxKeys);
}
else
{
assertEquals(16, indexMaxKeys);
}
}
public void testNulls() throws SQLException
{
DatabaseMetaData dbmd = con.getMetaData();
assertNotNull(dbmd);
assertTrue(!dbmd.nullsAreSortedAtStart());
assertTrue( dbmd.nullsAreSortedAtEnd() != TestUtil.haveMinimumServerVersion(con, "7.2"));
assertTrue( dbmd.nullsAreSortedHigh() == TestUtil.haveMinimumServerVersion(con, "7.2"));
assertTrue(!dbmd.nullsAreSortedLow());
assertTrue(dbmd.nullPlusNonNullIsNull());
assertTrue(dbmd.supportsNonNullableColumns());
}
public void testLocalFiles() throws SQLException
{
DatabaseMetaData dbmd = con.getMetaData();
assertNotNull(dbmd);
assertTrue(!dbmd.usesLocalFilePerTable());
assertTrue(!dbmd.usesLocalFiles());
}
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("\""));
}
public void testTables() throws SQLException
{
DatabaseMetaData dbmd = con.getMetaData();
assertNotNull(dbmd);
// we can add columns
assertTrue(dbmd.supportsAlterTableWithAddColumn());
// we can only drop columns in >= 7.3
if (TestUtil.haveMinimumServerVersion(con, "7.3"))
{
assertTrue(dbmd.supportsAlterTableWithDropColumn());
}
else
{
assertTrue(!dbmd.supportsAlterTableWithDropColumn());
}
}
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
}
public void testDBParams() throws SQLException
{
DatabaseMetaData dbmd = con.getMetaData();
assertNotNull(dbmd);
assertTrue(dbmd.getURL().equals(TestUtil.getURL()));
assertTrue(dbmd.getUserName().equals(TestUtil.getUser()));
}
public void testDbProductDetails() throws SQLException
{
assertTrue(con instanceof org.postgresql.PGConnection);
DatabaseMetaData dbmd = con.getMetaData();
assertNotNull(dbmd);
assertTrue(dbmd.getDatabaseProductName().equals("PostgreSQL"));
}
public void testDriverVersioning() throws SQLException
{
DatabaseMetaData dbmd = con.getMetaData();
assertNotNull(dbmd);
assertTrue(dbmd.getDriverVersion().equals(org.postgresql.Driver.getVersion()));
assertTrue(dbmd.getDriverMajorVersion() == org.postgresql.Driver.MAJORVERSION);
assertTrue(dbmd.getDriverMinorVersion() == org.postgresql.Driver.MINORVERSION);
}
}
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