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vfs,mount,cmount: report 1PB free for unknown disk sizes

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Factor the logic into the VFS layer so we don't have to duplicate it
into mount and cmount.

See: https://forum.rclone.org/t/rclone-mount-question/15454/
This commit is contained in:
Nick Craig-Wood
2020-04-08 18:29:50 +01:00
parent 9f3449d944
commit da41db4712
4 changed files with 100 additions and 51 deletions
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49
vfs/vfs_test.go
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@ -4,6 +4,7 @@ package vfs
import (
"context"
"fmt"
"io"
"os"
"testing"
@ -311,3 +312,51 @@ func TestVFSStatfs(t *testing.T) {
assert.Equal(t, free, free2)
assert.Equal(t, oldTime, vfs.usageTime)
}
func TestFillInMissingSizes(t *testing.T) {
const unknownFree = 10
for _, test := range []struct {
total, free, used int64
wantTotal, wantUsed, wantFree int64
}{
{
total: 20, free: 5, used: 15,
wantTotal: 20, wantFree: 5, wantUsed: 15,
},
{
total: 20, free: 5, used: -1,
wantTotal: 20, wantFree: 5, wantUsed: 15,
},
{
total: 20, free: -1, used: 15,
wantTotal: 20, wantFree: 5, wantUsed: 15,
},
{
total: 20, free: -1, used: -1,
wantTotal: 20, wantFree: 20, wantUsed: 0,
},
{
total: -1, free: 5, used: 15,
wantTotal: 20, wantFree: 5, wantUsed: 15,
},
{
total: -1, free: 15, used: -1,
wantTotal: 15, wantFree: 15, wantUsed: 0,
},
{
total: -1, free: -1, used: 15,
wantTotal: 25, wantFree: 10, wantUsed: 15,
},
{
total: -1, free: -1, used: -1,
wantTotal: 10, wantFree: 10, wantUsed: 0,
},
} {
t.Run(fmt.Sprintf("total=%d,free=%d,used=%d", test.total, test.free, test.used), func(t *testing.T) {
gotTotal, gotUsed, gotFree := fillInMissingSizes(test.total, test.used, test.free, unknownFree)
assert.Equal(t, test.wantTotal, gotTotal, "total")
assert.Equal(t, test.wantUsed, gotUsed, "used")
assert.Equal(t, test.wantFree, gotFree, "free")
})
}
}