remove torch.hub tests (#7399)

.circleci/config.yml

@@ -324,15 +324,6 @@ jobs:
           name: Check Python types statically
           command: mypy --install-types --non-interactive --config-file mypy.ini
 
-  unittest_torchhub:
-    docker:
-      - image: cimg/python:3.8
-    steps:
-      - checkout
-      - install_torchvision
-      - run_tests_selective:
-          file_or_dir: test/test_hub.py
-
   unittest_onnx:
     docker:
       - image: cimg/python:3.8
@@ -1257,7 +1248,6 @@ workflows:
 
   unittest:
     jobs:
-      - unittest_torchhub
       - unittest_onnx
       - unittest_extended
       - unittest_windows_cpu:

.circleci/config.yml.in

@@ -324,15 +324,6 @@ jobs:
           name: Check Python types statically
           command: mypy --install-types --non-interactive --config-file mypy.ini
 
-  unittest_torchhub:
-    docker:
-      - image: cimg/python:3.8
-    steps:
-      - checkout
-      - install_torchvision
-      - run_tests_selective:
-          file_or_dir: test/test_hub.py
-
   unittest_onnx:
     docker:
       - image: cimg/python:3.8
@@ -1017,7 +1008,6 @@ workflows:
 
   unittest:
     jobs:
-      - unittest_torchhub
       - unittest_onnx
       - unittest_extended
       {{ unittest_workflows() }}

test/test_hub.py

-import os
-import shutil
-import sys
-import tempfile
-
-import pytest
-import torch.hub as hub
-
-
-def sum_of_model_parameters(model):
-    s = 0
-    for p in model.parameters():
-        s += p.sum()
-    return s
-
-
-SUM_OF_PRETRAINED_RESNET18_PARAMS = -12703.9931640625
-
-
-@pytest.mark.skipif("torchvision" in sys.modules, reason="TestHub must start without torchvision imported")
-class TestHub:
-    # Only run this check ONCE before all tests start.
-    # - If torchvision is imported before all tests start, e.g. we might find _C.so
-    #   which doesn't exist in downloaded zip but in the installed wheel.
-    # - After the first test is run, torchvision is already in sys.modules due to
-    #   Python cache as we run all hub tests in the same python process.
-
-    def test_load_from_github(self):
-        hub_model = hub.load("pytorch/vision", "resnet18", weights="DEFAULT", progress=False)
-        assert sum_of_model_parameters(hub_model).item() == pytest.approx(SUM_OF_PRETRAINED_RESNET18_PARAMS)
-
-    def test_set_dir(self):
-        temp_dir = tempfile.gettempdir()
-        hub.set_dir(temp_dir)
-        hub_model = hub.load("pytorch/vision", "resnet18", weights="DEFAULT", progress=False)
-        assert sum_of_model_parameters(hub_model).item() == pytest.approx(SUM_OF_PRETRAINED_RESNET18_PARAMS)
-        assert os.path.exists(temp_dir + "/pytorch_vision_master")
-        shutil.rmtree(temp_dir + "/pytorch_vision_master")
-
-    def test_list_entrypoints(self):
-        entry_lists = hub.list("pytorch/vision", force_reload=True)
-        assert "resnet18" in entry_lists
-
-
-if __name__ == "__main__":
-    pytest.main([__file__])