diff --git a/blobxfer/operations/synccopy.py b/blobxfer/operations/synccopy.py
index 833781e..1f59b1a 100644
--- a/blobxfer/operations/synccopy.py
+++ b/blobxfer/operations/synccopy.py
@@ -46,6 +46,7 @@ import threading
 import blobxfer.models.metadata
 import blobxfer.operations.azure.blob
 import blobxfer.operations.azure.file
+import blobxfer.operations.md5
 import blobxfer.operations.progress
 import blobxfer.operations.resume
 import blobxfer.util
@@ -548,7 +549,7 @@ class SyncCopy(object):
             self._finalize_azure_file(sd, metadata, digest)
 
     def _check_copy_conditions(self, src, dst):
-        # type: (SyncCopy, blobxfer.models.upload.LocalPath,
+        # type: (SyncCopy, blobxfer.models.azure.StorageEntity,
         #        blobxfer.models.azure.StorageEntity) -> UploadAction
         """Check for synccopy conditions
         :param SyncCopy self: this
diff --git a/tests/test_blobxfer_operations_synccopy.py b/tests/test_blobxfer_operations_synccopy.py
new file mode 100644
index 0000000..e16b86b
--- /dev/null
+++ b/tests/test_blobxfer_operations_synccopy.py
@@ -0,0 +1,777 @@
+# coding=utf-8
+"""Tests for synccopy operations"""
+
+# stdlib imports
+try:
+    import unittest.mock as mock
+except ImportError:  # noqa
+    import mock
+try:
+    import pathlib2 as pathlib
+except ImportError:  # noqa
+    import pathlib
+# non-stdlib imports
+import pytest
+# local imports
+import blobxfer.models.azure as azmodels
+# module under test
+import blobxfer.operations.synccopy as ops
+
+
+def test_termination_check():
+    s = ops.SyncCopy(mock.MagicMock(), mock.MagicMock(), mock.MagicMock())
+
+    assert not s.termination_check
+
+
+def test_create_unique_transfer_operation_id():
+    src_ase = mock.MagicMock()
+    src_ase._client.primary_endpoint = 'ep'
+    src_ase.path = 'srcasepath'
+
+    dst_ase = mock.MagicMock()
+    dst_ase._client.primary_endpoint = 'ep2'
+    dst_ase.path = 'dstasepath'
+
+    id = ops.SyncCopy.create_unique_transfer_operation_id(src_ase, dst_ase)
+    assert id == 'ep;srcasepath;ep2;dstasepath'
+
+
+def test_create_deletion_id():
+    client = mock.MagicMock()
+    client.primary_endpoint = 'ep'
+
+    id = ops.SyncCopy.create_deletion_id(client, 'cont', 'name')
+    assert id == 'ep;cont;name'
+
+
+def test_update_progress_bar():
+    s = ops.SyncCopy(mock.MagicMock(), mock.MagicMock(), mock.MagicMock())
+
+    with mock.patch(
+            'blobxfer.operations.progress.update_progress_bar') as patched_upb:
+        s._update_progress_bar()
+        assert patched_upb.call_count == 1
+
+
+@mock.patch('blobxfer.operations.azure.file.list_all_files')
+@mock.patch('blobxfer.operations.azure.file.delete_file')
+@mock.patch('blobxfer.operations.azure.blob.list_all_blobs')
+@mock.patch('blobxfer.operations.azure.blob.delete_blob')
+def test_delete_extraneous_files(db, lab, df, laf):
+    s = ops.SyncCopy(mock.MagicMock(), mock.MagicMock(), mock.MagicMock())
+
+    # test no delete
+    s._spec.options.delete_extraneous_destination = False
+    s._get_destination_paths = mock.MagicMock()
+
+    s._delete_extraneous_files()
+    assert s._get_destination_paths.call_count == 0
+
+    # test file delete
+    s._spec.options.delete_extraneous_destination = True
+    s._spec.options.dest_mode = azmodels.StorageModes.File
+
+    sa1 = mock.MagicMock()
+    sa1.name = 'name'
+    sa1.endpoint = 'ep'
+    sa1.file_client.primary_endpoint = 'ep'
+
+    s._get_destination_paths = mock.MagicMock()
+    s._get_destination_paths.return_value = [
+        (sa1, 'cont', None, None),
+        (sa1, 'cont', None, None),
+    ]
+
+    laf.return_value = ['filename']
+
+    s._delete_extraneous_files()
+    assert laf.call_count == 1
+    assert df.call_count == 1
+
+    # test blob delete
+    s._spec.options.delete_extraneous_destination = True
+    s._spec.options.dest_mode = azmodels.StorageModes.Block
+
+    sa1 = mock.MagicMock()
+    sa1.name = 'name'
+    sa1.endpoint = 'ep'
+    sa1.block_blob_client.primary_endpoint = 'ep'
+
+    s._get_destination_paths = mock.MagicMock()
+    s._get_destination_paths.return_value = [
+        (sa1, 'cont', None, None),
+    ]
+
+    blob = mock.MagicMock()
+    blob.name = 'blobname'
+    lab.return_value = [blob]
+
+    s._delete_extraneous_files()
+    assert lab.call_count == 1
+    assert db.call_count == 1
+
+
+@mock.patch('blobxfer.operations.azure.blob.block.get_committed_block_list')
+def test_add_to_transfer_queue(gcbl):
+    s = ops.SyncCopy(mock.MagicMock(), mock.MagicMock(), mock.MagicMock())
+
+    src_ase = mock.MagicMock()
+    src_ase._client.primary_endpoint = 'ep'
+    src_ase.path = 'srcasepath'
+    src_ase.mode = azmodels.StorageModes.Block
+
+    dst_ase = mock.MagicMock()
+    dst_ase._client.primary_endpoint = 'ep2'
+    dst_ase.path = 'dstasepath'
+    dst_ase.mode = azmodels.StorageModes.Block
+
+    gcbl.return_value = None
+    s._add_to_transfer_queue(src_ase, dst_ase)
+    assert gcbl.call_count == 1
+    assert s._transfer_queue.qsize() == 1
+    assert s._synccopy_start_time is not None
+
+    src_ase.mode = azmodels.StorageModes.Page
+    s._add_to_transfer_queue(src_ase, dst_ase)
+    assert gcbl.call_count == 1
+    assert s._transfer_queue.qsize() == 2
+    assert s._synccopy_start_time is not None
+
+
+def test_initialize_transfer_threads():
+    s = ops.SyncCopy(mock.MagicMock(), mock.MagicMock(), mock.MagicMock())
+    s._general_options.concurrency.transfer_threads = 1
+
+    try:
+        s._initialize_transfer_threads()
+        assert len(s._transfer_threads) == 1
+    finally:
+        s._wait_for_transfer_threads(True)
+        for thr in s._transfer_threads:
+            assert not thr.is_alive()
+
+
+def test_worker_thread_transfer():
+    s = ops.SyncCopy(mock.MagicMock(), mock.MagicMock(), mock.MagicMock())
+    s._transfer_queue.put(mock.MagicMock())
+    s._transfer_queue.put(mock.MagicMock())
+    s._process_synccopy_descriptor = mock.MagicMock()
+    s._process_synccopy_descriptor.side_effect = [None, Exception()]
+
+    with mock.patch(
+            'blobxfer.operations.synccopy.SyncCopy.termination_check',
+            new_callable=mock.PropertyMock) as patched_tc:
+        patched_tc.side_effect = [False, False, True]
+        s._worker_thread_transfer()
+        assert s._process_synccopy_descriptor.call_count == 2
+        assert len(s._exceptions) == 1
+
+
+@mock.patch('blobxfer.operations.azure.blob.append.append_block')
+@mock.patch('blobxfer.operations.azure.blob.block.create_blob')
+@mock.patch('blobxfer.operations.azure.blob.block.put_block')
+@mock.patch('blobxfer.operations.azure.file.put_file_range')
+@mock.patch('blobxfer.operations.azure.blob.page.put_page')
+def test_put_data(pp, pfr, pb, cb, ab):
+    s = ops.SyncCopy(mock.MagicMock(), mock.MagicMock(), mock.MagicMock())
+
+    offsets = mock.MagicMock()
+    offsets.chunk_num = 0
+    offsets.num_bytes = 1
+    offsets.range_start = 10
+
+    src_ase = mock.MagicMock()
+    src_ase._client.primary_endpoint = 'ep'
+    src_ase.path = 'srcasepath'
+    src_ase.mode = azmodels.StorageModes.Block
+    src_ase.size = 10
+    src_ase.is_encrypted = False
+
+    dst_ase = mock.MagicMock()
+    dst_ase._client.primary_endpoint = 'ep2'
+    dst_ase.path = 'dstasepath'
+    dst_ase.mode = azmodels.StorageModes.Append
+    dst_ase.size = 10
+    dst_ase.is_encrypted = False
+
+    sd = mock.MagicMock()
+    sd.src_entity = src_ase
+    sd.dst_entity = dst_ase
+    sd.complete_offset_upload = mock.MagicMock()
+
+    s._put_data(sd, dst_ase, offsets, b'\0')
+    assert ab.call_count == 1
+
+    dst_ase.mode = azmodels.StorageModes.Block
+    sd.is_one_shot_block_blob = True
+    sd.must_compute_md5 = True
+    sd.src_entity.md5 = ''
+    s._put_data(sd, dst_ase, offsets, b'\0')
+    assert cb.call_count == 1
+
+    sd.src_entity.md5 = b'md5'
+    s._put_data(sd, dst_ase, offsets, b'\0')
+    assert cb.call_count == 2
+
+    sd.must_compute_md5 = False
+    s._put_data(sd, dst_ase, offsets, b'\0')
+    assert cb.call_count == 3
+
+    sd.is_one_shot_block_blob = False
+    s._put_data(sd, dst_ase, offsets, b'\0')
+    assert pb.call_count == 1
+
+    dst_ase.mode = azmodels.StorageModes.File
+    s._put_data(sd, dst_ase, offsets, b'\0')
+    assert pfr.call_count == 1
+
+    dst_ase.mode = azmodels.StorageModes.Page
+    s._put_data(sd, dst_ase, offsets, b'\0' * 512)
+    assert pp.call_count == 0
+
+    s._put_data(sd, dst_ase, offsets, b'1')
+    assert pp.call_count == 1
+
+
+def test_process_data():
+    s = ops.SyncCopy(mock.MagicMock(), mock.MagicMock(), mock.MagicMock())
+
+    s._put_data = mock.MagicMock()
+    s._complete_offset_upload = mock.MagicMock()
+    offsets = mock.MagicMock()
+    offsets.num_bytes = 1
+    offsets.chunk_num = 0
+    sd = mock.MagicMock()
+
+    s._process_data(sd, mock.MagicMock(), offsets, mock.MagicMock())
+    assert s._put_data.call_count == 1
+    assert s._synccopy_bytes_sofar == 1
+    assert sd.complete_offset_upload.call_count == 1
+
+
+@mock.patch('blobxfer.operations.azure.blob.create_container')
+@mock.patch('blobxfer.operations.azure.blob.append.create_blob')
+@mock.patch('blobxfer.operations.azure.file.create_share')
+@mock.patch('blobxfer.operations.azure.file.create_all_parent_directories')
+@mock.patch('blobxfer.operations.azure.file.create_file')
+@mock.patch('blobxfer.operations.azure.blob.page.create_blob')
+def test_prepare_upload(page_cb, cf, capd, cs, append_cb, cc):
+    s = ops.SyncCopy(mock.MagicMock(), mock.MagicMock(), mock.MagicMock())
+
+    ase = mock.MagicMock()
+    ase._client.primary_endpoint = 'ep'
+    ase.path = 'asepath'
+    ase.size = 10
+
+    ase.mode = azmodels.StorageModes.Append
+    ase.append_create = True
+    s._prepare_upload(ase)
+    assert cc.call_count == 1
+    assert append_cb.call_count == 1
+
+    ase.mode = azmodels.StorageModes.Block
+    ase.append_create = False
+    s._prepare_upload(ase)
+    assert cc.call_count == 2
+
+    ase.mode = azmodels.StorageModes.File
+    s._prepare_upload(ase)
+    assert cs.call_count == 1
+    assert capd.call_count == 1
+    assert cf.call_count == 1
+
+    ase.mode = azmodels.StorageModes.Page
+    s._prepare_upload(ase)
+    assert cc.call_count == 3
+    assert page_cb.call_count == 1
+
+
+@mock.patch('blobxfer.operations.azure.file.get_file_range')
+@mock.patch('blobxfer.operations.azure.blob.get_blob_range')
+def test_process_synccopy_descriptor(gbr, gfr):
+    s = ops.SyncCopy(mock.MagicMock(), mock.MagicMock(), mock.MagicMock())
+
+    src_ase = mock.MagicMock()
+    src_ase._client.primary_endpoint = 'ep'
+    src_ase.path = 'srcasepath'
+    src_ase.mode = azmodels.StorageModes.Block
+    src_ase.size = 10
+    src_ase.is_encrypted = False
+
+    dst_ase = mock.MagicMock()
+    dst_ase._client.primary_endpoint = 'ep2'
+    dst_ase.path = 'dstasepath'
+    dst_ase.mode = azmodels.StorageModes.Block
+    dst_ase.size = 10
+    dst_ase.is_encrypted = False
+
+    sd = mock.MagicMock()
+    sd.src_entity = src_ase
+    sd.dst_entity = dst_ase
+    sd.complete_offset_upload = mock.MagicMock()
+    sd.next_offsets.return_value = (None, 1)
+    sd.is_one_shot_block_blob = False
+    sd.all_operations_completed = True
+
+    s._finalize_upload = mock.MagicMock()
+    s._transfer_set.add(
+        ops.SyncCopy.create_unique_transfer_operation_id(src_ase, dst_ase))
+
+    # test resume and completed
+    s._process_synccopy_descriptor(sd)
+    assert s._synccopy_bytes_sofar == 1
+    assert s._finalize_upload.call_count == 1
+    assert len(s._transfer_set) == 0
+    assert s._synccopy_sofar == 1
+
+    # test nothing
+    s = ops.SyncCopy(mock.MagicMock(), mock.MagicMock(), mock.MagicMock())
+    sd.all_operations_completed = False
+    sd.next_offsets.return_value = (None, None)
+    s._process_synccopy_descriptor(sd)
+    assert s._transfer_queue.qsize() == 1
+
+    # test normal block blob
+    s = ops.SyncCopy(mock.MagicMock(), mock.MagicMock(), mock.MagicMock())
+    s._prepare_upload = mock.MagicMock()
+    s._process_data = mock.MagicMock()
+    offsets = mock.MagicMock()
+    offsets.chunk_num = 0
+    offsets.num_bytes = 1
+    offsets.range_start = 10
+    sd.next_offsets.return_value = (offsets, None)
+
+    dst_ase.replica_targets = [dst_ase]
+
+    s._process_synccopy_descriptor(sd)
+    assert gbr.call_count == 1
+    assert s._transfer_queue.qsize() == 1
+    assert len(s._transfer_set) == 0
+
+    # test normal append blob
+    s = ops.SyncCopy(mock.MagicMock(), mock.MagicMock(), mock.MagicMock())
+    s._prepare_upload = mock.MagicMock()
+    s._process_data = mock.MagicMock()
+    offsets = mock.MagicMock()
+    offsets.chunk_num = 0
+    offsets.num_bytes = 1
+    offsets.range_start = 10
+    sd.next_offsets.return_value = (offsets, None)
+    src_ase.mode = azmodels.StorageModes.Append
+
+    s._process_synccopy_descriptor(sd)
+    assert gbr.call_count == 2
+    assert s._transfer_queue.qsize() == 1
+    assert len(s._transfer_set) == 0
+
+    # test normal file
+    s = ops.SyncCopy(mock.MagicMock(), mock.MagicMock(), mock.MagicMock())
+    s._prepare_upload = mock.MagicMock()
+    s._process_data = mock.MagicMock()
+    offsets = mock.MagicMock()
+    offsets.chunk_num = 0
+    offsets.num_bytes = 1
+    offsets.range_start = 10
+    sd.next_offsets.return_value = (offsets, None)
+    src_ase.mode = azmodels.StorageModes.File
+
+    s._process_synccopy_descriptor(sd)
+    assert gfr.call_count == 1
+    assert s._transfer_queue.qsize() == 1
+    assert len(s._transfer_set) == 0
+
+
+@mock.patch('blobxfer.operations.azure.blob.block.put_block_list')
+def test_finalize_block_blob(pbl):
+    s = ops.SyncCopy(mock.MagicMock(), mock.MagicMock(), mock.MagicMock())
+
+    ase = mock.MagicMock()
+    ase._client.primary_endpoint = 'ep'
+    ase.path = 'asepath'
+    ase.size = 10
+    ase.mode = azmodels.StorageModes.Block
+    ase.is_encrypted = False
+    ase.replica_targets = [ase]
+
+    sd = mock.MagicMock()
+    sd.dst_entity = ase
+    sd.last_block_num = 1
+
+    s._finalize_block_blob(sd, mock.MagicMock(), mock.MagicMock())
+    assert pbl.call_count == 2
+
+
+@mock.patch('blobxfer.operations.azure.blob.set_blob_md5')
+def test_set_blob_md5(sbm):
+    s = ops.SyncCopy(mock.MagicMock(), mock.MagicMock(), mock.MagicMock())
+
+    ase = mock.MagicMock()
+    ase._client.primary_endpoint = 'ep'
+    ase.path = 'asepath'
+    ase.size = 10
+    ase.mode = azmodels.StorageModes.Block
+    ase.is_encrypted = False
+    ase.replica_targets = [ase]
+
+    sd = mock.MagicMock()
+    sd.dst_entity = ase
+
+    s._set_blob_md5(sd, mock.MagicMock())
+    assert sbm.call_count == 2
+
+
+@mock.patch('blobxfer.operations.azure.blob.set_blob_metadata')
+def test_set_blob_metadata(sbm):
+    s = ops.SyncCopy(mock.MagicMock(), mock.MagicMock(), mock.MagicMock())
+
+    ase = mock.MagicMock()
+    ase._client.primary_endpoint = 'ep'
+    ase.path = 'asepath'
+    ase.size = 10
+    ase.mode = azmodels.StorageModes.Block
+    ase.is_encrypted = False
+    ase.replica_targets = [ase]
+
+    sd = mock.MagicMock()
+    sd.dst_entity = ase
+
+    s._set_blob_metadata(sd, mock.MagicMock())
+    assert sbm.call_count == 2
+
+
+def test_finalize_nonblock_blob():
+    s = ops.SyncCopy(mock.MagicMock(), mock.MagicMock(), mock.MagicMock())
+
+    s._set_blob_md5 = mock.MagicMock()
+    s._set_blob_metadata = mock.MagicMock()
+
+    s._finalize_nonblock_blob(mock.MagicMock(), {'a': 0}, 'digest')
+    assert s._set_blob_md5.call_count == 1
+    assert s._set_blob_metadata.call_count == 1
+
+
+@mock.patch('blobxfer.operations.azure.file.set_file_md5')
+@mock.patch('blobxfer.operations.azure.file.set_file_metadata')
+def test_finalize_azure_file(sfmeta, sfmd5):
+    s = ops.SyncCopy(mock.MagicMock(), mock.MagicMock(), mock.MagicMock())
+
+    ase = mock.MagicMock()
+    ase._client.primary_endpoint = 'ep'
+    ase.path = 'asepath'
+    ase.size = 10
+    ase.mode = azmodels.StorageModes.File
+    ase.replica_targets = [ase]
+
+    sd = mock.MagicMock()
+    sd.dst_entity = ase
+
+    s._finalize_azure_file(sd, {'a': 0}, 'md5')
+    assert sfmd5.call_count == 2
+    assert sfmeta.call_count == 2
+
+
+def test_finalize_upload():
+    s = ops.SyncCopy(mock.MagicMock(), mock.MagicMock(), mock.MagicMock())
+
+    ase = mock.MagicMock()
+    ase._client.primary_endpoint = 'ep'
+    ase.path = 'asepath'
+    ase.size = 10
+    ase.mode = azmodels.StorageModes.Block
+    ase.replica_targets = [ase]
+    ase.md5 = 'md5'
+
+    sd = mock.MagicMock()
+    sd.dst_entity = ase
+    sd.src_entity = ase
+
+    s._finalize_block_blob = mock.MagicMock()
+    s._finalize_upload(sd)
+    assert s._finalize_block_blob.call_count == 1
+
+    ase.md5 = None
+    s._finalize_upload(sd)
+    assert s._finalize_block_blob.call_count == 2
+
+    sd.requires_put_block_list = False
+    sd.remote_is_page_blob = True
+    s._finalize_nonblock_blob = mock.MagicMock()
+    s._finalize_upload(sd)
+    assert s._finalize_nonblock_blob.call_count == 1
+
+    sd.remote_is_page_blob = False
+    sd.remote_is_append_blob = False
+    sd.remote_is_file = True
+    s._finalize_azure_file = mock.MagicMock()
+    s._finalize_upload(sd)
+    assert s._finalize_azure_file.call_count == 1
+
+
+@mock.patch('blobxfer.models.metadata.get_md5_from_metadata')
+def test_check_copy_conditions(gmfm):
+    s = ops.SyncCopy(mock.MagicMock(), mock.MagicMock(), mock.MagicMock())
+
+    src_ase = mock.MagicMock()
+    src_ase._client.primary_endpoint = 'ep'
+    src_ase.path = 'srcasepath'
+    src_ase.mode = azmodels.StorageModes.Block
+    src_ase.size = 10
+
+    dst_ase = mock.MagicMock()
+    dst_ase._client.primary_endpoint = 'ep2'
+    dst_ase.path = 'dstasepath'
+    dst_ase.mode = azmodels.StorageModes.Block
+    dst_ase.size = 10
+    dst_ase.from_local = False
+
+    assert s._check_copy_conditions(src_ase, None) == ops.SynccopyAction.Copy
+
+    s._spec.options.overwrite = False
+    assert s._check_copy_conditions(
+        src_ase, dst_ase) == ops.SynccopyAction.Skip
+
+    s._spec.options.overwrite = True
+    s._spec.skip_on.md5_match = True
+    gmfm.return_value = 'md5'
+    assert s._check_copy_conditions(
+        src_ase, dst_ase) == ops.SynccopyAction.Skip
+
+    gmfm.side_effect = ['md50', 'md51']
+    assert s._check_copy_conditions(
+        src_ase, dst_ase) == ops.SynccopyAction.Copy
+
+    gmfm.return_value = None
+    gmfm.side_effect = None
+    s._spec.skip_on.md5_match = False
+    s._spec.skip_on.filesize_match = False
+    s._spec.skip_on.lmt_ge = False
+    assert s._check_copy_conditions(
+        src_ase, dst_ase) == ops.SynccopyAction.Copy
+
+    # size mismatch
+    s._spec.skip_on.filesize_match = True
+    src_ase.size = 1
+    assert s._check_copy_conditions(
+        src_ase, dst_ase) == ops.SynccopyAction.Copy
+
+    # size match
+    s._spec.skip_on.filesize_match = True
+    src_ase.size = dst_ase.size
+    assert s._check_copy_conditions(
+        src_ase, dst_ase) == ops.SynccopyAction.Skip
+
+    # lmt match
+    s._spec.skip_on.filesize_match = False
+    s._spec.skip_on.lmt_ge = True
+    src_ase.lmt = 0
+    dst_ase.lmt = 0
+    assert s._check_copy_conditions(
+        src_ase, dst_ase) == ops.SynccopyAction.Skip
+
+    # lmt mismatch
+    s._spec.skip_on.lmt_ge = True
+    src_ase.lmt = 1
+    assert s._check_copy_conditions(
+        src_ase, dst_ase) == ops.SynccopyAction.Copy
+
+
+@mock.patch('blobxfer.operations.azure.file.get_file_properties')
+@mock.patch('blobxfer.operations.azure.blob.get_blob_properties')
+def test_check_for_existing_remote(gbp, gfp):
+    s = ops.SyncCopy(mock.MagicMock(), mock.MagicMock(), mock.MagicMock())
+
+    sa = mock.MagicMock()
+    sa.name = 'name'
+    sa.endpoint = 'ep'
+
+    s._spec.options.dest_mode = azmodels.StorageModes.File
+    gfp.return_value = None
+    assert s._check_for_existing_remote(sa, 'cont', 'name') is None
+
+    with mock.patch(
+            'blobxfer.models.crypto.EncryptionMetadata.'
+            'encryption_metadata_exists', return_value=False):
+        gfp.return_value = mock.MagicMock()
+        assert s._check_for_existing_remote(sa, 'cont', 'name') is not None
+
+    with mock.patch(
+            'blobxfer.models.crypto.EncryptionMetadata.'
+            'encryption_metadata_exists', return_value=True):
+        with mock.patch(
+                'blobxfer.models.crypto.EncryptionMetadata.convert_from_json'):
+            gfp.return_value = mock.MagicMock()
+            assert s._check_for_existing_remote(sa, 'cont', 'name') is not None
+
+    s._spec.options.dest_mode = azmodels.StorageModes.Block
+    gbp.return_value = None
+    assert s._check_for_existing_remote(sa, 'cont', 'name') is None
+
+    with mock.patch(
+            'blobxfer.models.crypto.EncryptionMetadata.'
+            'encryption_metadata_exists', return_value=False):
+        gbp.return_value = mock.MagicMock()
+        assert s._check_for_existing_remote(sa, 'cont', 'name') is not None
+
+
+def test_get_destination_paths():
+    s = ops.SyncCopy(mock.MagicMock(), mock.MagicMock(), mock.MagicMock())
+    paths = mock.MagicMock()
+    paths.paths = [pathlib.Path('a/b')]
+    s._spec.destinations = [paths]
+
+    sa, cont, dir, dpath = next(s._get_destination_paths())
+    assert cont == 'a'
+    assert dir == 'b'
+    assert dpath == pathlib.Path('a/b')
+
+
+def test_generate_destination_for_source():
+    s = ops.SyncCopy(mock.MagicMock(), mock.MagicMock(), mock.MagicMock())
+    s._spec.options.dest_mode = azmodels.StorageModes.Block
+    s._check_for_existing_remote = mock.MagicMock()
+    s._check_for_existing_remote.return_value = None
+
+    src_ase = mock.MagicMock()
+    src_ase._client.primary_endpoint = 'ep'
+    src_ase.path = 'srcasepath'
+    src_ase.mode = azmodels.StorageModes.Block
+    src_ase.size = 10
+    src_ase.name = 'srcase'
+
+    sa = mock.MagicMock()
+    sa.name = 'name'
+    sa.endpoint = 'ep'
+
+    s._get_destination_paths = mock.MagicMock()
+    s._get_destination_paths.return_value = [
+        (sa, 'cont', 'name', 'dpath'),
+    ]
+
+    s._check_copy_conditions = mock.MagicMock()
+    s._check_copy_conditions.return_value = ops.SynccopyAction.Copy
+
+    ase = next(s._generate_destination_for_source(src_ase))
+    assert ase is not None
+    assert ase.size == src_ase.size
+    assert ase.mode == s._spec.options.dest_mode
+
+
+def test_bind_sources_to_destination():
+    s = ops.SyncCopy(mock.MagicMock(), mock.MagicMock(), mock.MagicMock())
+    s._spec.options.delete_extraneous_destination = True
+
+    src_ase = mock.MagicMock()
+    src_ase._client.primary_endpoint = 'ep'
+    src_ase.container = 'srccont'
+    src_ase.path = 'srcasepath'
+    src_ase.mode = azmodels.StorageModes.Block
+    src_ase.size = 10
+    src_ase.name = 'srcase'
+
+    dst_ase = mock.MagicMock()
+    dst_ase._client.primary_endpoint = 'ep2'
+    dst_ase.container = 'dstcont'
+    dst_ase.path = 'dstasepath'
+    dst_ase.mode = azmodels.StorageModes.Block
+    dst_ase.size = 10
+    dst_ase.name = 'dstase'
+    dst_ase.from_local = False
+    dst_ase.replica_targets = None
+
+    dst2_ase = mock.MagicMock()
+    dst2_ase._client.primary_endpoint = 'ep2a'
+    dst2_ase.container = 'dstcont2'
+    dst2_ase.name = 'dstase2'
+
+    src = mock.MagicMock()
+    src.files.return_value = [src_ase]
+
+    s._spec.sources = [src]
+
+    s._generate_destination_for_source = mock.MagicMock()
+    i = 0
+    for a, b in s._bind_sources_to_destination():
+        i += 1
+    assert i == 0
+
+    s._generate_destination_for_source.return_value = [dst_ase, dst2_ase]
+    a, b = next(s._bind_sources_to_destination())
+    assert a == src_ase
+    assert b == dst_ase
+    assert len(b.replica_targets) == 1
+    assert b.replica_targets[0] == dst2_ase
+
+
+@mock.patch('blobxfer.operations.azure.file.get_file_range')
+@mock.patch('blobxfer.operations.azure.blob.get_blob_range')
+@mock.patch('blobxfer.operations.resume.SyncCopyResumeManager')
+def test_run(srm, gbr, gfr):
+    s = ops.SyncCopy(mock.MagicMock(), mock.MagicMock(), mock.MagicMock())
+    s._general_options.concurrency.transfer_threads = 1
+    s._general_options.resume_file = 'resume'
+    s._spec.options.chunk_size_bytes = 0
+
+    src_ase = mock.MagicMock()
+    src_ase._client.primary_endpoint = 'ep'
+    src_ase.container = 'srccont'
+    src_ase.path = 'srcasepath'
+    src_ase.mode = azmodels.StorageModes.Block
+    src_ase.size = 10
+    src_ase.name = 'srcase'
+
+    dst_ase = mock.MagicMock()
+    dst_ase._client.primary_endpoint = 'ep2'
+    dst_ase.container = 'dstcont'
+    dst_ase.path = 'dstasepath'
+    dst_ase.mode = azmodels.StorageModes.Block
+    dst_ase.size = 10
+    dst_ase.name = 'dstase'
+    dst_ase.from_local = False
+    dst_ase.replica_targets = None
+
+    s._bind_sources_to_destination = mock.MagicMock()
+    s._bind_sources_to_destination.return_value = [
+        (src_ase, dst_ase)
+    ]
+
+    s._prepare_upload = mock.MagicMock()
+    s._put_data = mock.MagicMock()
+    s._finalize_upload = mock.MagicMock()
+
+    # normal execution
+    s._run()
+    assert s._prepare_upload.call_count == 1
+    assert s._put_data.call_count == 1
+
+    # replica targets with mismatch
+    dst_ase.replica_targets = [dst_ase]
+    with pytest.raises(RuntimeError):
+        s._run()
+
+    # exception during worker thread
+    dst_ase.replica_targets = None
+    with pytest.raises(RuntimeError):
+        s._process_synccopy_descriptor = mock.MagicMock()
+        s._process_synccopy_descriptor.side_effect = RuntimeError()
+        s._run()
+
+
+def test_start():
+    s = ops.SyncCopy(mock.MagicMock(), mock.MagicMock(), mock.MagicMock())
+    s._wait_for_transfer_threads = mock.MagicMock()
+    s._resume = mock.MagicMock()
+    s._run = mock.MagicMock()
+
+    # test keyboard interrupt
+    s._run.side_effect = KeyboardInterrupt()
+    s.start()
+
+    assert s._run.call_count == 1
+    assert s._wait_for_transfer_threads.call_count == 1
+    assert s._resume.close.call_count == 1
+
+    # test other exception
+    s._run.side_effect = RuntimeError()
+    with pytest.raises(RuntimeError):
+        s.start()