gvisor.dev/gvisor@v0.0.0-20240520182842-f9d4d51c7e0f/pkg/sentry/fsutil/dirty_set_test.go (about)

     1  // Copyright 2018 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  
    15  package fsutil
    16  
    17  import (
    18  	"slices"
    19  	"testing"
    20  
    21  	"gvisor.dev/gvisor/pkg/hostarch"
    22  	"gvisor.dev/gvisor/pkg/sentry/memmap"
    23  )
    24  
    25  func TestDirtySet(t *testing.T) {
    26  	var set DirtySet
    27  	set.MarkDirty(memmap.MappableRange{0, 2 * hostarch.PageSize})
    28  	set.KeepDirty(memmap.MappableRange{hostarch.PageSize, 2 * hostarch.PageSize})
    29  	set.MarkClean(memmap.MappableRange{0, 2 * hostarch.PageSize})
    30  	want := []DirtyFlatSegment{
    31  		{hostarch.PageSize, 2 * hostarch.PageSize, DirtyInfo{Keep: true}},
    32  	}
    33  	if got := set.ExportSlice(); !slices.Equal(got, want) {
    34  		t.Errorf("set:\n\tgot %v,\n\twant %v", got, want)
    35  	}
    36  }