Only run the very slow new integration test in one CI job

.circleci/config.yml

@@ -94,6 +94,8 @@ workflows:
           {}
 
       - "integration":
+          # Run even the slow integration tests here.
+          tox-args: "--runslow"
           requires:
             # If the unit test suite doesn't pass, don't bother running the
             # integration tests.
@@ -294,6 +296,14 @@ jobs:
 
   integration:
     <<: *DEBIAN
+
+    parameters:
+      tox-args:
+        description: >-
+          Additional arguments to pass to the tox command.
+        type: string"
+        default: ""
+
     docker:
       - <<: *DOCKERHUB_AUTH
         image: "tahoelafsci/debian:11-py3.9"
@@ -306,6 +316,11 @@ jobs:
       # Disable artifact collection because py.test can't produce any.
       ARTIFACTS_OUTPUT_PATH: ""
 
+      # Pass on anything we got in our parameters.  Passing an arguments here
+      # disables the default "integration" argument defined in the tox env, so
+      # also stick "integration" in here.
+      TAHOE_LAFS_TOX_ARGS: "<< parameters.tox-args >> integration"
+
     steps:
       - "checkout"
       # DRY, YAML-style.  See the debian-9 steps.

integration/conftest.py

@@ -62,6 +62,22 @@ def pytest_addoption(parser):
         help=("If set, force Foolscap only for the storage protocol. " +
               "Otherwise HTTP will be used.")
     )
+    parser.addoption(
+        "--runslow", action="store_true", default=False,
+        dest="runslow",
+        help="If set, run tests marked as slow.",
+    )
+
+def pytest_collection_modifyitems(session, config, items):
+    if not config.option.runslow:
+        # The --runslow option was not given; keep only collected items not
+        # marked as slow.
+        items[:] = [
+            item
+            for item
+            in items
+            if item.get_closest_marker("slow") is None
+        ]
 
 
 @pytest.fixture(autouse=True, scope='session')

integration/test_vectors.py

@@ -95,6 +95,7 @@ def test_convergence(convergence):
     assert len(convergence) == 16, "Convergence secret must by 16 bytes"
 
 
+@mark.slow
 @mark.parametrize('case_and_expected', vectors.capabilities.items())
 @ensureDeferred
 async def test_capability(reactor, request, alice, case_and_expected):