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fs: add Fingerprint to detect changes in an object

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This commit is contained in:
Nick Craig-Wood 2020-06-19 11:02:57 +01:00
parent 25662b9e05
commit 79f5d940cf
2 changed files with 97 additions and 0 deletions
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43
fs/fingerprint_test.go Normal file
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package fs_test
import (
"context"
"fmt"
"testing"
"github.com/rclone/rclone/fs"
"github.com/rclone/rclone/fs/hash"
"github.com/rclone/rclone/fstest/mockfs"
"github.com/rclone/rclone/fstest/mockobject"
"github.com/stretchr/testify/assert"
)
func TestFingerprint(t *testing.T) {
ctx := context.Background()
f := mockfs.NewFs("test", "root")
f.SetHashes(hash.NewHashSet(hash.MD5))
for i, test := range []struct {
fast bool
slowModTime bool
slowHash bool
want string
}{
{fast: false, slowModTime: false, slowHash: false, want: "4,0001-01-01 00:00:00 +0000 UTC,8d777f385d3dfec8815d20f7496026dc"},
{fast: false, slowModTime: false, slowHash: true, want: "4,0001-01-01 00:00:00 +0000 UTC,8d777f385d3dfec8815d20f7496026dc"},
{fast: false, slowModTime: true, slowHash: false, want: "4,0001-01-01 00:00:00 +0000 UTC,8d777f385d3dfec8815d20f7496026dc"},
{fast: false, slowModTime: true, slowHash: true, want: "4,0001-01-01 00:00:00 +0000 UTC,8d777f385d3dfec8815d20f7496026dc"},
{fast: true, slowModTime: false, slowHash: false, want: "4,0001-01-01 00:00:00 +0000 UTC,8d777f385d3dfec8815d20f7496026dc"},
{fast: true, slowModTime: false, slowHash: true, want: "4,0001-01-01 00:00:00 +0000 UTC"},
{fast: true, slowModTime: true, slowHash: false, want: "4,8d777f385d3dfec8815d20f7496026dc"},
{fast: true, slowModTime: true, slowHash: true, want: "4"},
} {
what := fmt.Sprintf("#%d fast=%v,slowModTime=%v,slowHash=%v", i, test.fast, test.slowModTime, test.slowHash)
o := mockobject.New("potato").WithContent([]byte("data"), mockobject.SeekModeRegular)
o.SetFs(f)
f.Features().SlowModTime = test.slowModTime
f.Features().SlowHash = test.slowHash
got := fs.Fingerprint(ctx, o, test.fast)
assert.Equal(t, test.want, got, what)
}
}