github.com/SagerNet/gvisor@v0.0.0-20210707092255-7731c139d75c/pkg/sentry/fs/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  	"reflect"
    19  	"testing"
    20  
    21  	"github.com/SagerNet/gvisor/pkg/hostarch"
    22  	"github.com/SagerNet/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 := &DirtySegmentDataSlices{
    31  		Start:  []uint64{hostarch.PageSize},
    32  		End:    []uint64{2 * hostarch.PageSize},
    33  		Values: []DirtyInfo{{Keep: true}},
    34  	}
    35  	if got := set.ExportSortedSlices(); !reflect.DeepEqual(got, want) {
    36  		t.Errorf("set:\n\tgot %v,\n\twant %v", got, want)
    37  	}
    38  }