[catapult] - Copy Telemetry's gsutilz over to third_party.

third_party/gsutil/gslib/tests/test_rsync_funcs.py

+# -*- coding: utf-8 -*-
+# Copyright 2014 Google Inc. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""Unit tests for functions in rsync command."""
+
+import logging
+import os
+
+from gslib.commands.rsync import _ComputeNeededFileChecksums
+from gslib.commands.rsync import _NA
+from gslib.hashing_helper import CalculateB64EncodedCrc32cFromContents
+from gslib.hashing_helper import CalculateB64EncodedMd5FromContents
+from gslib.tests.testcase.unit_testcase import GsUtilUnitTestCase
+
+
+class TestRsyncFuncs(GsUtilUnitTestCase):
+
+  def test_compute_needed_file_checksums(self):
+    """Tests that we compute all/only needed file checksums."""
+    size = 4
+    logger = logging.getLogger()
+    tmpdir = self.CreateTempDir()
+    file_url_str = 'file://%s' % os.path.join(tmpdir, 'obj1')
+    self.CreateTempFile(tmpdir=tmpdir, file_name='obj1', contents='obj1')
+    cloud_url_str = 'gs://whatever'
+    with open(os.path.join(tmpdir, 'obj1'), 'rb') as fp:
+      crc32c = CalculateB64EncodedCrc32cFromContents(fp)
+      fp.seek(0)
+      md5 = CalculateB64EncodedMd5FromContents(fp)
+
+    # Test case where source is a file and dest has CRC32C.
+    (src_crc32c, src_md5, dst_crc32c, dst_md5) = _ComputeNeededFileChecksums(
+        logger, file_url_str, size, _NA, _NA, cloud_url_str, size, crc32c, _NA)
+    self.assertEquals(crc32c, src_crc32c)
+    self.assertEquals(_NA, src_md5)
+    self.assertEquals(crc32c, dst_crc32c)
+    self.assertEquals(_NA, dst_md5)
+
+    # Test case where source is a file and dest has MD5 but not CRC32C.
+    (src_crc32c, src_md5, dst_crc32c, dst_md5) = _ComputeNeededFileChecksums(
+        logger, file_url_str, size, _NA, _NA, cloud_url_str, size, _NA, md5)
+    self.assertEquals(_NA, src_crc32c)
+    self.assertEquals(md5, src_md5)
+    self.assertEquals(_NA, dst_crc32c)
+    self.assertEquals(md5, dst_md5)
+
+    # Test case where dest is a file and src has CRC32C.
+    (src_crc32c, src_md5, dst_crc32c, dst_md5) = _ComputeNeededFileChecksums(
+        logger, cloud_url_str, size, crc32c, _NA, file_url_str, size, _NA, _NA)
+    self.assertEquals(crc32c, dst_crc32c)
+    self.assertEquals(_NA, src_md5)
+    self.assertEquals(crc32c, src_crc32c)
+    self.assertEquals(_NA, src_md5)
+
+    # Test case where dest is a file and src has MD5 but not CRC32C.
+    (src_crc32c, src_md5, dst_crc32c, dst_md5) = _ComputeNeededFileChecksums(
+        logger, cloud_url_str, size, _NA, md5, file_url_str, size, _NA, _NA)
+    self.assertEquals(_NA, dst_crc32c)
+    self.assertEquals(md5, src_md5)
+    self.assertEquals(_NA, src_crc32c)
+    self.assertEquals(md5, src_md5)