org.hsqldb.test.TestCollation Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of hsqldb Show documentation
Show all versions of hsqldb Show documentation
HSQLDB - Lightweight 100% Java SQL Database Engine
/* Copyright (c) 2001-2019, The HSQL Development Group
* 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 the HSQL Development Group 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 HSQL DEVELOPMENT GROUP, HSQLDB.ORG,
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.hsqldb.test;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Locale;
import org.hsqldb.lib.HashSet;
import org.hsqldb.lib.Iterator;
import org.hsqldb.lib.Set;
import org.hsqldb.types.Collation;
/**
* Test HSQLDBs collation capabilities
* @author [email protected]
*/
public class TestCollation extends TestBase {
Statement statement;
Connection connection;
Iterator collIterator;
Iterator localeIterator;
/** Creates a new instance of TestCollation */
public TestCollation(String name) {
super(name, "jdbc:hsqldb:file:test", false, false);
super.isNetwork = false;
}
protected void setUp() throws Exception {
super.setUp();
connection = super.newConnection();
statement = connection.createStatement();
collIterator = Collation.getCollationsIterator();
localeIterator = Collation.getLocalesIterator();
}
protected void tearDown() {
try {
statement = connection.createStatement();
statement.execute("SHUTDOWN");
} catch (Exception e) {}
super.tearDown();
}
/**
* checks whether expected locales are present and selectable
*/
public void testVerifyAvailability() {
// let's check whether unknown collation identifiers are rejected
try {
statement.execute(
getSetCollationStmt(
"ThisIsDefinitlyNoValidCollationIdentifier"));
fail("database did not reject invalid collation name");
} catch (SQLException e) {}
// let's check whether the DB accepts all known collations
int count = 0;
while (collIterator.hasNext()) {
String collationName = (String) collIterator.next();
try {
statement.execute(getSetCollationStmt(collationName));
} catch (SQLException e) {
fail("could not set collation '" + collationName
+ "'\n exception message: " + e.getMessage());
}
++count;
}
System.out.println("checked " + count
+ " collations for availability.");
// even if the above worked, we cannot be sure that all locales are really supported.
// The fact that SET DATABASE COLLATION succeeeded only means that a Collator could
// be instantiated with a Locale matching the given collation name. But what if
// Locale.Instance(...) lied, and returned a fallback Locale instance?
//
// Hmm, looking at the documentation of Locale.getAvailableLocales, I'm not sure
// whether it is really feasible. The doc states "returns a list of all installed Locales".
// The "installed" puzzles me - maybe this is really different per installation, and not only
// per JDK version?
Locale[] availableLocales = Locale.getAvailableLocales();
Set existenceCheck = new HashSet();
for (int i = 0; i < availableLocales.length; ++i) {
String availaleName = availableLocales[i].getLanguage();
if (availableLocales[i].getCountry().length() > 0) {
availaleName += "-" + availableLocales[i].getCountry();
}
existenceCheck.add(availaleName);
}
String notInstalled = "";
int expected = 0,
failed = 0;
while (localeIterator.hasNext()) {
String localeName = (String) localeIterator.next();
++expected;
if (!existenceCheck.contains(localeName)) {
if (notInstalled.length() > 0) {
notInstalled += "; ";
}
notInstalled += localeName;
++failed;
}
}
if (notInstalled.length() > 0) {
fail("the following locales are not installed:\n " + notInstalled
+ "\n (" + failed + " out of " + expected + ")");
}
}
/**
* checks whether sorting via a given collation works as expected
*/
public void testVerifyCollation() {
String failedCollations = "";
String failMessage = "";
while (collIterator.hasNext()) {
String collationName = (String) collIterator.next();
String message = checkSorting(collationName);
if (message.length() > 0) {
if (failedCollations.length() > 0) {
failedCollations += ", ";
}
failedCollations += collationName;
failMessage += message;
}
}
if (failedCollations.length() > 0) {
fail("test failed for following collations:\n" + failedCollations
+ "\n" + failMessage);
}
}
/**
* returns an SQL statement to set the database collation
*/
protected final String getSetCollationStmt(String collationName) {
final String setCollationStmtPre = "SET DATABASE COLLATION \"";
final String setCollationStmtPost = "\"";
return setCollationStmtPre + collationName + setCollationStmtPost;
}
/**
* checks sorting a table with according to a given collation
*/
protected String checkSorting(String collationName) {
String stmt1 = "DROP TABLE WORDLIST IF EXISTS;";
String stmt2 =
"CREATE TEXT TABLE WORDLIST ( ID INTEGER, WORD VARCHAR(50) );";
String stmt3 = "SET TABLE WORDLIST SOURCE \"" + collationName
+ ".csv;encoding=UTF-8\"";
String selectStmt = "SELECT ID, WORD FROM WORDLIST ORDER BY WORD";
String returnMessage = "";
try {
// set database collation
statement.execute(getSetCollationStmt(collationName));
statement.execute(stmt1);
statement.execute(stmt2);
statement.execute(stmt3);
ResultSet results = statement.executeQuery(selectStmt);
while (results.next()) {
int expectedPosition = results.getInt(1);
int foundPosition = results.getRow();
if (expectedPosition != foundPosition) {
String word = results.getString(2);
return "testing collation '" + collationName
+ "' failed\n" + " word : " + word
+ "\n" + " expected position : "
+ expectedPosition + "\n"
+ " found position : " + foundPosition + "\n";
}
}
} catch (SQLException e) {
return "testing collation '" + collationName
+ "' failed\n exception message: " + e.getMessage() + "\n";
}
return "";
}
public static void main(String[] argv) {
runWithResult(TestCollation.class, "testVerifyAvailability");
runWithResult(TestCollation.class, "testVerifyCollation");
}
}