pull/fetch/push: add stats (#3735)

* pull/fetch/push: add stats

* fix typo: s/logging/logger

* pull: make stats detailed, with summary at the bottom

* tests: mock properly, set return_value

* add a line space

tests/unit/command/test_checkout.py

@@ -1,7 +1,7 @@
 import logging
 
 from dvc.cli import parse_args
-from dvc.command.checkout import CmdCheckout, log_summary, log_changes
+from dvc.command.checkout import CmdCheckout, log_changes
 
 
 def test_checkout(tmp_dir, dvc, mocker):
@@ -23,33 +23,6 @@ def test_checkout(tmp_dir, dvc, mocker):
     )
 
 
-def test_log_summary(caplog):
-    stats = {
-        "added": ["file1", "file2", "file3"],
-        "deleted": ["file4", "file5"],
-        "modified": ["file6", "file7"],
-    }
-
-    def _assert_output(stats, expected_text):
-        with caplog.at_level(logging.INFO, logger="dvc"):
-            caplog.clear()
-            log_summary(stats)
-            assert expected_text in caplog.text
-
-    _assert_output(stats, "3 added, 2 deleted and 2 modified")
-
-    del stats["deleted"][1]
-    _assert_output(stats, "3 added, 1 deleted and 2 modified")
-
-    del stats["deleted"][0]
-    _assert_output(stats, "3 added and 2 modified")
-
-    del stats["modified"]
-    _assert_output(stats, "3 added")
-
-    _assert_output({}, "No changes.")
-
-
 def test_log_changes(caplog):
     stats = {
         "added": ["file1", "dir1/"],

tests/unit/command/test_data_sync.py

@@ -22,7 +22,7 @@ def test_fetch(mocker):
     assert cli_args.func == CmdDataFetch
 
     cmd = cli_args.func(cli_args)
-    m = mocker.patch.object(cmd.repo, "fetch", autospec=True)
+    m = mocker.patch.object(cmd.repo, "fetch", autospec=True, return_value=0)
 
     assert cmd.run() == 0
 
@@ -96,7 +96,7 @@ def test_push(mocker):
     assert cli_args.func == CmdDataPush
 
     cmd = cli_args.func(cli_args)
-    m = mocker.patch.object(cmd.repo, "push", autospec=True)
+    m = mocker.patch.object(cmd.repo, "push", autospec=True, return_value=0)
 
     assert cmd.run() == 0