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package vfs_test
import (
"io/fs"
"testing"
"testing/fstest"
"github.com/snapcore/snapd/osutil/vfs"
)
func TestVFS_MakeShared(t *testing.T) {
t.Run("success", func(t *testing.T) {
v := vfs.NewVFS(fstest.MapFS{"home": &fstest.MapFile{Mode: fs.ModeDir}})
assertSuccess(t, v.MakeShared(""))
assertSuccess(t, v.Mount(fstest.MapFS{}, "home"))
assertVFS(t, v, `
-1 -1 0:0 / / rw shared:1 - (fstype) (source) rw
0 -1 0:0 / /home rw shared:2 - (fstype) (source) rw
`)
})
t.Run("twice", func(t *testing.T) {
v := vfs.NewVFS(fstest.MapFS{})
assertSuccess(t, v.MakeShared(""))
assertSuccess(t, v.MakeShared(""))
assertVFS(t, v, `
-1 -1 0:0 / / rw shared:1 - (fstype) (source) rw
`)
})
t.Run("not-mount-point", func(t *testing.T) {
v := vfs.NewVFS(fstest.MapFS{"home": &fstest.MapFile{Mode: fs.ModeDir}})
assertErrorIs(t, v.MakeShared("home"), vfs.ErrNotMounted)
assertVFS(t, v, `
-1 -1 0:0 / / rw - (fstype) (source) rw
`)
})
}
func TestVFS_RecursivelyMakeShared(t *testing.T) {
t.Run("top-level", func(t *testing.T) {
v := vfs.NewVFS(fstest.MapFS{"home": &fstest.MapFile{Mode: fs.ModeDir}})
assertSuccess(t, v.Mount(fstest.MapFS{"zyga": &fstest.MapFile{Mode: fs.ModeDir}}, "home"))
assertSuccess(t, v.Mount(fstest.MapFS{}, "home/zyga"))
assertSuccess(t, v.MakeRecursivelyShared(""))
assertVFS(t, v, `
-1 -1 0:0 / / rw shared:1 - (fstype) (source) rw
0 -1 0:0 / /home rw shared:2 - (fstype) (source) rw
1 0 0:0 / /home/zyga rw shared:3 - (fstype) (source) rw
`)
})
t.Run("not-top-level", func(t *testing.T) {
v := vfs.NewVFS(fstest.MapFS{"home": &fstest.MapFile{Mode: fs.ModeDir}})
assertSuccess(t, v.Mount(fstest.MapFS{"zyga": &fstest.MapFile{Mode: fs.ModeDir}}, "home"))
assertSuccess(t, v.Mount(fstest.MapFS{}, "home/zyga"))
assertSuccess(t, v.MakeRecursivelyShared("home"))
assertVFS(t, v, `
-1 -1 0:0 / / rw - (fstype) (source) rw
0 -1 0:0 / /home rw shared:1 - (fstype) (source) rw
1 0 0:0 / /home/zyga rw shared:2 - (fstype) (source) rw
`)
})
t.Run("leaf", func(t *testing.T) {
v := vfs.NewVFS(fstest.MapFS{"home": &fstest.MapFile{Mode: fs.ModeDir}})
assertSuccess(t, v.Mount(fstest.MapFS{"zyga": &fstest.MapFile{Mode: fs.ModeDir}}, "home"))
assertSuccess(t, v.Mount(fstest.MapFS{}, "home/zyga"))
assertSuccess(t, v.MakeRecursivelyShared("home/zyga"))
assertVFS(t, v, `
-1 -1 0:0 / / rw - (fstype) (source) rw
0 -1 0:0 / /home rw - (fstype) (source) rw
1 0 0:0 / /home/zyga rw shared:1 - (fstype) (source) rw
`)
})
}
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