@Test
public void testReadingExistentFileByCallingList()
throws IOException, DatabaseCorruptedException {
filePath.getParent().toFile().mkdir();
try (DataOutputStream file = new DataOutputStream(new FileOutputStream(filePath.toString()))) {
file.write(correctKey1.getBytes(encoding));
file.write('\0');
file.writeInt(correctKey1.length() + correctKey2.length() + 2 + offsetLength * 2);
file.write(correctKey2.getBytes(encoding));
file.write('\0');
file.writeInt(
correctKey2.length()
+ correctKey2.length()
+ 2
+ offsetLength * 2
+ testStringValue.length());
file.write(testStringValue.getBytes(encoding));
file.write(testStringValue.getBytes(encoding));
}
DataFile test = new DataFile(testDir, new Coordinates(folderIndex, fileIndex), table, provider);
Set<String> expectedKeySet = new HashSet<>();
expectedKeySet.add(correctKey1);
expectedKeySet.add(correctKey2);
assertEquals(expectedKeySet, test.list());
}
@Test
public void testSavingEmptyDataFileToDisk() throws IOException, DatabaseCorruptedException {
DataFile test = new DataFile(testDir, new Coordinates(folderIndex, fileIndex), table, provider);
test.put(correctKey1, testStoreableValue);
test.remove(correctKey1);
test.commit();
test = new DataFile(testDir, new Coordinates(folderIndex, fileIndex), table, provider);
assertTrue(test.list().isEmpty());
}
@Test
public void testWritingNewFileToDiskAndThenReadingIt()
throws IOException, DatabaseCorruptedException {
DataFile test = new DataFile(testDir, new Coordinates(folderIndex, fileIndex), table, provider);
String[] keyList = {correctKey1, correctKey2};
test.put(keyList[0], testStoreableValue);
test.put(keyList[1], testStoreableValue);
test.commit();
assertArrayEquals(keyList, test.list().toArray());
}
@Test
public void testPutKeysAndThenCallList() throws IOException, DatabaseCorruptedException {
DataFile test = new DataFile(testDir, new Coordinates(folderIndex, fileIndex), table, provider);
test.put(correctKey1, testStoreableValue);
test.put(correctKey2, testStoreableValue);
Set<String> expectedKeySet = new HashSet<>();
expectedKeySet.add(correctKey1);
expectedKeySet.add(correctKey2);
Set<String> actualKeySet = new HashSet<>();
actualKeySet.addAll(test.list());
assertEquals(expectedKeySet, actualKeySet);
}
@Test
public void testListCalledForEmptyDataFile() throws IOException, DatabaseCorruptedException {
DataFile test = new DataFile(testDir, new Coordinates(folderIndex, fileIndex), table, provider);
assertTrue(test.list().isEmpty());
}
