[test] sync without changes

Syncing without any changes was reported as slow. This benchmark will
help measure it.

1 files changed, 12 insertions, 0 deletions

diff --git a/testing/tests/perf/test_sync.py b/testing/tests/perf/test_sync.py
index 146f1394..668ceae7 100644
--- a/testing/tests/perf/test_sync.py
+++ b/testing/tests/perf/test_sync.py
@@ -57,3 +57,15 @@ def create_download(downloads, size):
 test_download_20_500k = create_download(20, 500*1000)
 test_download_100_100k = create_download(100, 100*1000)
 test_download_1000_10k = create_download(1000, 10*1000)
+
+
+@pytest.inlineCallbacks
+@pytest.mark.benchmark(group="test_nothing_to_sync")
+def test_nothing_to_sync(soledad_client, txbenchmark_with_setup):
+    def setup():
+        clean_client = soledad_client()
+        return (clean_client,), {}
+
+    def sync(clean_client):
+        return clean_client.sync()
+    yield txbenchmark_with_setup(setup, sync)