def test_uncommitted_read_on_closed(self):
with tempfile.TemporaryDirectory() as temp_dir:
path = os.path.join(temp_dir, 'loss')
writer = Writer(path, compression='gzip')
length = 1000
for index in range(length):
writer.append_record(str(index).encode())
writer.close()
reader = Reader(path, uncommitted_bucket_visible=True)
assert reader.get_records_num() == length
for index in range(length):
assert index == int(reader.get(index).decode())
reader.close()
def test_simple_int(self):
with tempfile.TemporaryDirectory() as temp_dir:
path = os.path.join(temp_dir, 'loss')
writer = Writer(path, compression=None)
length = 1000
for index in range(length):
writer.append_record(str(index).encode())
writer.close()
reader = Reader(path)
assert reader.get_records_num() == length
for index in range(length):
assert index == int(reader.get(index).decode())
def test_read_write(self):
with tempfile.TemporaryDirectory() as temp_dir:
path = os.path.join(temp_dir, 'loss')
writer = Writer(path, compression=None)
length = 1000
for index in range(length):
writer.append_record(str(index).encode())
writer.flush()
reader = Reader(path, uncommitted_bucket_visible=False)
assert reader.get_records_num() == 0
reader.close()
writer.close()
def test_simple_binary(self):
with tempfile.TemporaryDirectory() as temp_dir:
path = os.path.join(temp_dir, 'loss')
writer = Writer(path, compression=None)
length = 5000
for index in range(length):
entry = (str(index) * index).encode()
writer.append_record(entry)
writer.close()
reader = Reader(path)
assert reader.get_records_num() == length
for index in range(length):
entry = (str(index) * index).encode()
assert entry == reader.get(index)
def test_append_mode_binary(self):
with tempfile.TemporaryDirectory() as temp_dir:
path = os.path.join(temp_dir, 'loss')
length = 1000
chunks = 5
chunk_len = length // chunks
for chunk in range(chunks):
writer = Writer(path, rewrite=False)
for index in range(chunk * chunk_len, (chunk + 1) * chunk_len):
entry = str(index).encode()
writer.append_record(entry)
writer.close()
reader = Reader(path)
assert reader.get_records_num() == length
for index in range(length):
entry = str(index).encode()
assert entry == reader.get(index)
def test_write_mode_binary(self):
with tempfile.TemporaryDirectory() as temp_dir:
path = os.path.join(temp_dir, 'loss')
length = 1000
writer = Writer(path, rewrite=True)
for index in range(length // 2):
writer.append_record(b'0')
writer.close()
writer = Writer(path, rewrite=True)
for index in range(length // 2, length):
entry = str(index).encode()
writer.append_record(entry)
writer.close()
reader = Reader(path)
assert reader.get_records_num() == length // 2
for index in range(length // 2, length):
entry = str(index).encode()
assert entry == reader.get(index - length // 2)