chore: import upstream snapshot with attribution

tests/python/all-platform-minimal-test/test_validate_runtime_library.py

@@ -0,0 +1,56 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+"""Post-install checks for a built TVM wheel.
+
+These live in ``tests/python/all-platform-minimal-test`` so the standard suite and
+the cibuildwheel ``test-command`` run a single pytest invocation. The assertions
+here are wheel-specific things the rest of the suite cannot check -- that LLVM is
+enabled (the other LLVM test merely *skips* when LLVM is absent) and that the CUDA
+runtime library got bundled -- so each is gated behind a ``TVM_WHEEL_EXPECT_*`` env
+var and SKIPS unless that var is set. cibuildwheel sets the vars (see
+``CIBW_TEST_ENVIRONMENT`` in ``.github/actions/build-wheel-for-publish``); ordinary
+source-build CI (e.g. ``main.yml``) leaves them unset, so these tests skip there and
+never fail a non-wheel / non-LLVM / non-CUDA build.
+"""
+
+import glob
+import os
+from pathlib import Path
+
+import pytest
+
+import tvm
+
+
+def test_llvm_enabled():
+    """Every published TVM wheel ships with LLVM enabled. Only assert this when
+    validating a wheel (``TVM_WHEEL_EXPECT_LLVM=1``); skip otherwise so source
+    builds with LLVM off do not fail."""
+    if os.environ.get("TVM_WHEEL_EXPECT_LLVM") != "1":
+        pytest.skip("LLVM enablement only asserted during wheel validation")
+    assert tvm.runtime.enabled("llvm"), "wheel was not built with LLVM enabled"
+
+
+def test_cuda_runtime_present():
+    """The bundled CUDA runtime library must be present in tvm/lib."""
+    if os.environ.get("TVM_WHEEL_EXPECT_CUDA_RUNTIME") != "1":
+        pytest.skip("CUDA runtime not expected in this wheel")
+    libdir = Path(tvm.__file__).resolve().parent / "lib"
+    present = glob.glob(str(libdir / "libtvm_runtime_cuda.*")) or glob.glob(
+        str(libdir / "tvm_runtime_cuda.*")
+    )
+    assert present, "CUDA runtime expected but not bundled in tvm/lib"