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https://github.com/NVIDIA/nvidia-container-toolkit
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bbd9222206
This change adds a driver root abstraction that defines how libraries are located relative to the root. This allows for this driver root to be constructed once and passed to discovery code. Signed-off-by: Evan Lezar <elezar@nvidia.com>
105 lines
2.9 KiB
Go
105 lines
2.9 KiB
Go
/**
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# Copyright 2023 NVIDIA CORPORATION
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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**/
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package cuda
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import (
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"fmt"
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"os"
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"path/filepath"
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"strings"
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"testing"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/lookup"
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testlog "github.com/sirupsen/logrus/hooks/test"
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"github.com/stretchr/testify/require"
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)
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func TestLocate(t *testing.T) {
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logger, _ := testlog.NewNullLogger()
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testCases := []struct {
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description string
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libcudaPath string
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expected []string
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expectedError error
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}{
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{
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description: "no libcuda does not resolve library",
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libcudaPath: "",
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expected: []string{},
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expectedError: lookup.ErrNotFound,
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},
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{
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description: "no-ldcache searches /usr/lib64",
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libcudaPath: "/usr/lib64/libcuda.so.123.34",
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expected: []string{"/usr/lib64/libcuda.so.123.34"},
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expectedError: nil,
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},
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}
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for _, tc := range testCases {
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t.Run(tc.description, func(t *testing.T) {
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driverRoot, err := setupDriverRoot(t, tc.libcudaPath)
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require.NoError(t, err)
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l := New(
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lookup.NewLibraryLocator(
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lookup.WithLogger(logger),
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lookup.WithRoot(driverRoot),
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),
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)
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candidates, err := l.Locate(".*")
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require.ErrorIs(t, err, tc.expectedError)
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var strippedCandidates []string
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for _, c := range candidates {
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// NOTE: We need to strip `/private` on MacOs due to symlink resolution
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strippedCandidates = append(strippedCandidates, strings.TrimPrefix(c, "/private"))
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}
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var expectedWithRoot []string
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for _, e := range tc.expected {
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expectedWithRoot = append(expectedWithRoot, filepath.Join(driverRoot, e))
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}
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require.EqualValues(t, expectedWithRoot, strippedCandidates)
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})
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}
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}
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// setupDriverRoot creates a folder that can be used to represent a driver root.
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// The path to libcuda can be specified and an empty file is created at this location in the driver root.
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func setupDriverRoot(t *testing.T, libCudaPath string) (string, error) {
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driverRoot := t.TempDir()
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if libCudaPath == "" {
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return driverRoot, nil
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}
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if err := os.MkdirAll(filepath.Join(driverRoot, filepath.Dir(libCudaPath)), 0755); err != nil {
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return "", fmt.Errorf("falied to create required driver root folder: %w", err)
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}
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libCuda, err := os.Create(filepath.Join(driverRoot, libCudaPath))
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if err != nil {
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return "", fmt.Errorf("failed to create dummy libcuda.so: %w", err)
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}
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defer libCuda.Close()
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return driverRoot, nil
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}
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