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package com.gitblit.instance;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TemporaryFolder;
import java.io.File;
import java.nio.file.Files;
import java.util.UUID;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
public class GitblitInstanceIdTest
{
@Rule
public TemporaryFolder baseFolder = new TemporaryFolder();
/**
* Tests that the version nibble is set to 0x8.
*/
@Test
public void testUuidVersion() throws Exception
{
GitblitInstanceId id = new GitblitInstanceId();
UUID uuid = id.getId();
assertNotNull(uuid);
long upper = uuid.getMostSignificantBits();
assertEquals(0x0000000000008000L, (upper & 0x000000000000F000L));
}
/**
* Tests that the variant nibble is set to 0x8.
*/
@Test
public void testUuidVariant() throws Exception
{
GitblitInstanceId id = new GitblitInstanceId();
UUID uuid = id.getId();
assertNotNull(uuid);
long lower = uuid.getLeastSignificantBits();
assertEquals(0x8000000000000000L, (lower & 0xF000000000000000L));
}
/**
* Test that the first four bytes hold a timestamp in a newly generated id.
*/
@Test
public void testDatePart() throws Exception
{
GitblitInstanceId id = new GitblitInstanceId();
UUID uuid = id.getId();
assertNotNull(uuid);
long upper = uuid.getMostSignificantBits();
long ts = System.currentTimeMillis();
assertEquals("Date part of UUID does not equal current date/time.", ts >> 2*8, upper >> 4*8);
}
/**
* Test that a new id is generated and stored in a file, when none existed.
*/
@Test
public void testStoreId() throws Exception
{
GitblitInstanceId id = new GitblitInstanceId(baseFolder.getRoot());
UUID uuid = id.getId();
assertNotNull(uuid);
long lower = uuid.getLeastSignificantBits();
assertEquals(0x8000000000000000L, (lower & 0xF000000000000000L));
long upper = uuid.getMostSignificantBits();
assertEquals(0x0000000000008000L, (upper & 0x000000000000F000L));
File idFile = new File(baseFolder.getRoot(), GitblitInstanceId.STORAGE_FILE);
assertTrue("Id file was not created", idFile.exists());
String string = Files.readAllLines(idFile.toPath()).get(0);
try {
UUID uuidFromFile = UUID.fromString(string);
assertEquals("Returned id and id read from file are not equal.", uuid, uuidFromFile);
} catch (IllegalArgumentException e) {
fail("UUID read from file is not valid: " + string);
}
}
/**
* Test that a new id is generated and stored in a file, when none existed.
*/
@Test
public void testStoreIdNonexistingFolder() throws Exception
{
File baseSubFolder = new File(baseFolder.getRoot(), "nonexisting");
GitblitInstanceId id = new GitblitInstanceId(baseSubFolder);
UUID uuid = id.getId();
assertNotNull(uuid);
long lower = uuid.getLeastSignificantBits();
assertEquals(0x8000000000000000L, (lower & 0xF000000000000000L));
long upper = uuid.getMostSignificantBits();
assertEquals(0x0000000000008000L, (upper & 0x000000000000F000L));
File idFile = new File(baseSubFolder, GitblitInstanceId.STORAGE_FILE);
assertTrue("Id file was not created", idFile.exists());
String string = Files.readAllLines(idFile.toPath()).get(0);
try {
UUID uuidFromFile = UUID.fromString(string);
assertEquals("Returned id and id read from file are not equal.", uuid, uuidFromFile);
} catch (IllegalArgumentException e) {
fail("UUID read from file is not valid: " + string);
}
}
/**
* Test that an existing id is read from an existing id file.
*/
@Test
public void testReadId() throws Exception
{
File idFile = new File(baseFolder.getRoot(), GitblitInstanceId.STORAGE_FILE);
String uuidString = "0196e409-c664-82f3-88f1-e963d16c7b8a";
Files.write(idFile.toPath(), uuidString.getBytes());
GitblitInstanceId id = new GitblitInstanceId(baseFolder.getRoot());
UUID uuid = id.getId();
assertNotNull(uuid);
UUID refUuid = UUID.fromString(uuidString);
assertEquals("Returned id is not equal to reference id", refUuid, uuid);
}
/**
* Test reading id from a file with whitespace
*/
@Test
public void testReadIdWhitespace() throws Exception
{
File idFile = new File(baseFolder.getRoot(), GitblitInstanceId.STORAGE_FILE);
String uuidString = "0196e409-c664-82f3-88f1-e963d16c7b8a";
String fileString = "\n " + uuidString + " \n \n";
Files.write(idFile.toPath(), fileString.getBytes());
GitblitInstanceId id = new GitblitInstanceId(baseFolder.getRoot());
UUID uuid = id.getId();
assertNotNull(uuid);
UUID refUuid = UUID.fromString(uuidString);
assertEquals("Returned id is not equal to reference id", refUuid, uuid);
}
}
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