234 lines
8.7 KiB
Python
234 lines
8.7 KiB
Python
import unittest
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import moto
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import boto
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import os
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from storage import S3Storage, StorageContext
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from storage.cloud import _CloudStorage, _PartUploadMetadata
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from storage.cloud import _CHUNKS_KEY
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from StringIO import StringIO
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_TEST_CONTENT = os.urandom(1024)
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_TEST_BUCKET = 'some_bucket'
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_TEST_USER = 'someuser'
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_TEST_PASSWORD = 'somepassword'
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_TEST_PATH = 'some/cool/path'
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_TEST_CONTEXT = StorageContext('nyc', None, None, None, None)
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class TestCloudStorage(unittest.TestCase):
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def setUp(self):
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self.mock = moto.mock_s3()
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self.mock.start()
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# Create a test bucket and put some test content.
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boto.connect_s3().create_bucket(_TEST_BUCKET)
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self.engine = S3Storage(_TEST_CONTEXT, 'some/path', _TEST_BUCKET, _TEST_USER, _TEST_PASSWORD)
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self.engine.put_content(_TEST_PATH, _TEST_CONTENT)
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def tearDown(self):
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self.mock.stop()
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def test_basicop(self):
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# Ensure the content exists.
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self.assertTrue(self.engine.exists(_TEST_PATH))
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# Verify it can be retrieved.
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self.assertEquals(_TEST_CONTENT, self.engine.get_content(_TEST_PATH))
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# Retrieve a checksum for the content.
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self.engine.get_checksum(_TEST_PATH)
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# Remove the file.
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self.engine.remove(_TEST_PATH)
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# Ensure it no longer exists.
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with self.assertRaises(IOError):
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self.engine.get_content(_TEST_PATH)
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with self.assertRaises(IOError):
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self.engine.get_checksum(_TEST_PATH)
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self.assertFalse(self.engine.exists(_TEST_PATH))
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def test_copy_samecreds(self):
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# Copy the content to another engine.
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another_engine = S3Storage(_TEST_CONTEXT, 'another/path', _TEST_BUCKET, _TEST_USER,
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_TEST_PASSWORD)
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self.engine.copy_to(another_engine, _TEST_PATH)
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# Verify it can be retrieved.
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self.assertEquals(_TEST_CONTENT, another_engine.get_content(_TEST_PATH))
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def test_copy_differentcreds(self):
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# Copy the content to another engine.
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another_engine = S3Storage(_TEST_CONTEXT, 'another/path', 'another_bucket', 'blech',
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'password')
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boto.connect_s3().create_bucket('another_bucket')
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self.engine.copy_to(another_engine, _TEST_PATH)
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# Verify it can be retrieved.
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self.assertEquals(_TEST_CONTENT, another_engine.get_content(_TEST_PATH))
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def test_stream_read(self):
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# Read the streaming content.
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data = ''.join(self.engine.stream_read(_TEST_PATH))
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self.assertEquals(_TEST_CONTENT, data)
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def test_stream_read_file(self):
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with self.engine.stream_read_file(_TEST_PATH) as f:
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self.assertEquals(_TEST_CONTENT, f.read())
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def test_stream_write(self):
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new_data = os.urandom(4096)
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self.engine.stream_write(_TEST_PATH, StringIO(new_data), content_type='Cool/Type')
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self.assertEquals(new_data, self.engine.get_content(_TEST_PATH))
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def test_chunked_upload_no_chunks(self):
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self._chunk_upload_test(0)
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def test_chunked_upload_single_chunk(self):
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self._chunk_upload_test(1)
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def test_chunked_upload_multiple_chunks(self):
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self._chunk_upload_test(50)
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def test_chunked_upload_single_chunk_client_side(self):
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self._chunk_upload_test(1, force_client_side=True)
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def test_chunked_upload_multiple_chunks_client_side(self):
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self._chunk_upload_test(50, force_client_side=True)
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def _chunk_upload_test(self, chunk_count, force_client_side=False):
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upload_id, metadata = self.engine.initiate_chunked_upload()
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final_data = ''
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for index in range(0, chunk_count):
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chunk_data = os.urandom(1024)
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final_data = final_data + chunk_data
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bytes_written, new_metadata, error = self.engine.stream_upload_chunk(upload_id, 0,
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len(chunk_data),
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StringIO(chunk_data),
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metadata)
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metadata = new_metadata
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self.assertEquals(len(chunk_data), bytes_written)
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self.assertIsNone(error)
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self.assertEquals(index + 1, len(metadata[_CHUNKS_KEY]))
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# Complete the chunked upload.
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self.engine.complete_chunked_upload(upload_id, 'some/chunked/path', metadata,
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force_client_side=force_client_side)
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# Ensure the file contents are valid.
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self.assertEquals(final_data, self.engine.get_content('some/chunked/path'))
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def test_cancel_chunked_upload_single_chunk(self):
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self._cancel_chunked_upload_test(1)
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def test_cancel_chunked_upload_multiple_chunks(self):
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self._cancel_chunked_upload_test(50)
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def _cancel_chunked_upload_test(self, chunk_count):
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upload_id, metadata = self.engine.initiate_chunked_upload()
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for _ in range(0, chunk_count):
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chunk_data = os.urandom(1024)
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_, new_metadata, _ = self.engine.stream_upload_chunk(upload_id, 0,
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len(chunk_data),
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StringIO(chunk_data),
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metadata)
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metadata = new_metadata
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# Cancel the upload.
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self.engine.cancel_chunked_upload(upload_id, metadata)
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# Ensure all chunks were deleted.
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for chunk in metadata[_CHUNKS_KEY]:
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self.assertFalse(self.engine.exists(chunk.path))
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def test_large_chunks_upload(self):
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# Make the max chunk size much smaller for testing.
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self.engine.maximum_chunk_size = self.engine.minimum_chunk_size * 2
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upload_id, metadata = self.engine.initiate_chunked_upload()
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# Write a "super large" chunk, to ensure that it is broken into smaller chunks.
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chunk_data = os.urandom(int(self.engine.maximum_chunk_size * 2.5))
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bytes_written, new_metadata, _ = self.engine.stream_upload_chunk(upload_id, 0,
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-1,
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StringIO(chunk_data),
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metadata)
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self.assertEquals(bytes_written, len(chunk_data))
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# Complete the chunked upload.
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self.engine.complete_chunked_upload(upload_id, 'some/chunked/path', new_metadata)
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# Ensure the file contents are valid.
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self.assertEquals(len(self.engine.get_content('some/chunked/path')), len(chunk_data))
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self.assertEquals(chunk_data, self.engine.get_content('some/chunked/path'))
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def test_large_chunks_with_ragged_edge(self):
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# Make the max chunk size much smaller for testing and force it to have a ragged edge.
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self.engine.maximum_chunk_size = self.engine.minimum_chunk_size * 2 + 10
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upload_id, metadata = self.engine.initiate_chunked_upload()
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# Write a few "super large" chunks, to ensure that it is broken into smaller chunks.
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all_data = ''
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for _ in range(0, 2):
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chunk_data = os.urandom(int(self.engine.maximum_chunk_size) + 20)
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bytes_written, new_metadata, _ = self.engine.stream_upload_chunk(upload_id, 0,
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-1,
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StringIO(chunk_data),
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metadata)
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self.assertEquals(bytes_written, len(chunk_data))
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all_data = all_data + chunk_data
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metadata = new_metadata
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# Complete the chunked upload.
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self.engine.complete_chunked_upload(upload_id, 'some/chunked/path', new_metadata)
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# Ensure the file contents are valid.
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self.assertEquals(len(self.engine.get_content('some/chunked/path')), len(all_data))
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self.assertEquals(all_data, self.engine.get_content('some/chunked/path'))
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def assertRechunked(self, chunk, max_size, *args):
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rechunked = list(_CloudStorage._rechunk(chunk, max_size))
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self.assertEquals(len(rechunked), len(args), rechunked)
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for index, chunk in enumerate(rechunked):
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self.assertEquals(args[index], chunk)
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def test_rechunking(self):
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chunk = _PartUploadMetadata('foo', 0, 100)
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self.assertRechunked(chunk, 50,
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_PartUploadMetadata('foo', 0, 50),
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_PartUploadMetadata('foo', 50, 50))
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self.assertRechunked(chunk, 40,
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_PartUploadMetadata('foo', 0, 25),
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_PartUploadMetadata('foo', 25, 25),
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_PartUploadMetadata('foo', 50, 25),
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_PartUploadMetadata('foo', 75, 25))
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self.assertRechunked(chunk, 51,
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_PartUploadMetadata('foo', 0, 50),
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_PartUploadMetadata('foo', 50, 50))
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self.assertRechunked(chunk, 49,
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_PartUploadMetadata('foo', 0, 25),
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_PartUploadMetadata('foo', 25, 25),
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_PartUploadMetadata('foo', 50, 25),
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_PartUploadMetadata('foo', 75, 25))
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self.assertRechunked(chunk, 99,
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_PartUploadMetadata('foo', 0, 50),
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_PartUploadMetadata('foo', 50, 50))
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self.assertRechunked(chunk, 100,
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_PartUploadMetadata('foo', 0, 100))
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if __name__ == '__main__':
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unittest.main()
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