gvisor.dev/gvisor@v0.0.0-20240520182842-f9d4d51c7e0f/tools/gpu/drivers/install_driver_test.go (about)

     1  // Copyright 2023 The gVisor Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //	http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  package drivers
    15  
    16  import (
    17  	"bytes"
    18  	"context"
    19  	"crypto/sha256"
    20  	"fmt"
    21  	"io"
    22  	"strings"
    23  	"testing"
    24  
    25  	"gvisor.dev/gvisor/pkg/sentry/devices/nvproxy"
    26  )
    27  
    28  // TestVersionInstalled tests when the version is already installed.
    29  func TestVersionInstalled(t *testing.T) {
    30  	ctx := context.Background()
    31  	versionContent := []byte("some cool content")
    32  	checksum := fmt.Sprintf("%x", sha256.Sum256(versionContent))
    33  	version := nvproxy.NewDriverVersion(1, 2, 3)
    34  	getFunction := func() (nvproxy.DriverVersion, error) { return version, nil }
    35  	downloadFunction := func(context.Context, string) (io.ReadCloser, error) { return nil, fmt.Errorf("should not get here") }
    36  	installer := &Installer{
    37  		requestedVersion: version,
    38  		expectedChecksumFunc: func(v nvproxy.DriverVersion) (string, bool) {
    39  			if v == version {
    40  				return checksum, true
    41  			}
    42  			return "", false
    43  		},
    44  		getCurrentDriverFunc: getFunction,
    45  		downloadFunc:         downloadFunction,
    46  	}
    47  	if err := installer.MaybeInstall(ctx); err != nil {
    48  		t.Fatalf("Installation failed: %v", err)
    49  	}
    50  }
    51  
    52  // TestVersionNotSupported tests when the version is not supported.
    53  func TestVersionNotSupported(t *testing.T) {
    54  	ctx := context.Background()
    55  	unsupportedVersion := nvproxy.NewDriverVersion(1, 2, 3)
    56  	installer := &Installer{
    57  		requestedVersion: unsupportedVersion,
    58  		expectedChecksumFunc: func(v nvproxy.DriverVersion) (string, bool) {
    59  			return "", false
    60  		},
    61  	}
    62  	err := installer.MaybeInstall(ctx)
    63  	if err == nil {
    64  		t.Fatalf("Installation succeeded, want error")
    65  	}
    66  	if !strings.Contains(err.Error(), "not supported") {
    67  		t.Errorf("Installation failed, want error containing 'not supported' got: %s", err.Error())
    68  	}
    69  }
    70  
    71  // TestShaMismatch tests when a checksum of a driver doesn't match what's in the map.
    72  func TestShaMismatch(t *testing.T) {
    73  	ctx := context.Background()
    74  	version := nvproxy.NewDriverVersion(1, 2, 3)
    75  	installer := &Installer{
    76  		requestedVersion: version,
    77  		getCurrentDriverFunc: func() (nvproxy.DriverVersion, error) {
    78  			return nvproxy.DriverVersion{}, nil
    79  		},
    80  		expectedChecksumFunc: func(v nvproxy.DriverVersion) (string, bool) {
    81  			if v == version {
    82  				return "mismatch", true
    83  			}
    84  			return "", false
    85  		},
    86  		downloadFunc: func(context.Context, string) (io.ReadCloser, error) {
    87  			reader := bytes.NewReader([]byte("some content"))
    88  			return io.NopCloser(reader), nil
    89  		},
    90  	}
    91  	err := installer.MaybeInstall(ctx)
    92  	if err == nil {
    93  		t.Fatalf("Installation succeeded, want error")
    94  	}
    95  	if !strings.Contains(err.Error(), "checksum mismatch") {
    96  		t.Errorf("Installation failed, want error containing 'mismatch checksum' got: %s", err.Error())
    97  	}
    98  }
    99  
   100  // TestDriverInstalls tests the successful installation of a driver.
   101  func TestDriverInstalls(t *testing.T) {
   102  	ctx := context.Background()
   103  	content := []byte("some content")
   104  	checksum := fmt.Sprintf("%x", sha256.Sum256(content))
   105  	version := nvproxy.NewDriverVersion(1, 2, 3)
   106  	installer := &Installer{
   107  		requestedVersion: version,
   108  		getCurrentDriverFunc: func() (nvproxy.DriverVersion, error) {
   109  			return nvproxy.DriverVersion{}, nil
   110  		},
   111  		expectedChecksumFunc: func(v nvproxy.DriverVersion) (string, bool) {
   112  			if v == version {
   113  				return checksum, true
   114  			}
   115  			return "", false
   116  		},
   117  		downloadFunc: func(context.Context, string) (io.ReadCloser, error) {
   118  			reader := bytes.NewReader(content)
   119  			return io.NopCloser(reader), nil
   120  		},
   121  		installFunc: func(_ string) error {
   122  			return nil
   123  		},
   124  	}
   125  	if err := installer.MaybeInstall(ctx); err != nil {
   126  		t.Fatalf("Installation failed: %v", err)
   127  	}
   128  }