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restic/internal/restic/snapshot_policy_test.go
Michael Eischer ff7ef5007e Replace most usages of ioutil with the underlying function 
The ioutil functions are deprecated since Go 1.17 and only wrap another
library function. Thus directly call the underlying function.

This commit only mechanically replaces the function calls.
2022-12-02 19:36:43 +01:00

283 lines
9.7 KiB
Go
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package restic_test
import (
"encoding/json"
"fmt"
"os"
"path/filepath"
"testing"
"time"
"github.com/google/go-cmp/cmp"
"github.com/google/go-cmp/cmp/cmpopts"
"github.com/restic/restic/internal/restic"
)
func parseTimeUTC(s string) time.Time {
t, err := time.Parse("2006-01-02 15:04:05", s)
if err != nil {
panic(err)
}
return t.UTC()
}
func parseDuration(s string) restic.Duration {
d, err := restic.ParseDuration(s)
if err != nil {
panic(err)
}
return d
}
func TestExpireSnapshotOps(t *testing.T) {
data := []struct {
expectEmpty bool
expectSum int
p *restic.ExpirePolicy
}{
{true, 0, &restic.ExpirePolicy{}},
{true, 0, &restic.ExpirePolicy{Tags: []restic.TagList{}}},
{false, 22, &restic.ExpirePolicy{Daily: 7, Weekly: 2, Monthly: 3, Yearly: 10}},
}
for i, d := range data {
isEmpty := d.p.Empty()
if isEmpty != d.expectEmpty {
t.Errorf("empty test %v: wrong result, want:\n %#v\ngot:\n %#v", i, d.expectEmpty, isEmpty)
}
hasSum := d.p.Sum()
if hasSum != d.expectSum {
t.Errorf("sum test %v: wrong result, want:\n %#v\ngot:\n %#v", i, d.expectSum, hasSum)
}
}
}
// ApplyPolicyResult is used to marshal/unmarshal the golden files for
// TestApplyPolicy.
type ApplyPolicyResult struct {
Keep restic.Snapshots `json:"keep"`
Reasons []restic.KeepReason `json:"reasons,omitempty"`
}
func loadGoldenFile(t testing.TB, filename string) (res ApplyPolicyResult) {
buf, err := os.ReadFile(filename)
if err != nil {
t.Fatalf("error loading golden file %v: %v", filename, err)
}
err = json.Unmarshal(buf, &res)
if err != nil {
t.Fatalf("error unmarshalling golden file %v: %v", filename, err)
}
return res
}
func saveGoldenFile(t testing.TB, filename string, keep restic.Snapshots, reasons []restic.KeepReason) {
res := ApplyPolicyResult{
Keep: keep,
Reasons: reasons,
}
buf, err := json.MarshalIndent(res, "", " ")
if err != nil {
t.Fatalf("error marshaling result: %v", err)
}
if err = os.WriteFile(filename, buf, 0644); err != nil {
t.Fatalf("unable to update golden file: %v", err)
}
}
func TestApplyPolicy(t *testing.T) {
var testExpireSnapshots = restic.Snapshots{
{Time: parseTimeUTC("2014-09-01 10:20:30")},
{Time: parseTimeUTC("2014-09-02 10:20:30")},
{Time: parseTimeUTC("2014-09-05 10:20:30")},
{Time: parseTimeUTC("2014-09-06 10:20:30")},
{Time: parseTimeUTC("2014-09-08 10:20:30")},
{Time: parseTimeUTC("2014-09-09 10:20:30")},
{Time: parseTimeUTC("2014-09-10 10:20:30")},
{Time: parseTimeUTC("2014-09-11 10:20:30")},
{Time: parseTimeUTC("2014-09-20 10:20:30")},
{Time: parseTimeUTC("2014-09-22 10:20:30")},
{Time: parseTimeUTC("2014-08-08 10:20:30")},
{Time: parseTimeUTC("2014-08-10 10:20:30")},
{Time: parseTimeUTC("2014-08-12 10:20:30")},
{Time: parseTimeUTC("2014-08-13 10:20:30")},
{Time: parseTimeUTC("2014-08-13 10:20:30.1")},
{Time: parseTimeUTC("2014-08-15 10:20:30")},
{Time: parseTimeUTC("2014-08-18 10:20:30")},
{Time: parseTimeUTC("2014-08-20 10:20:30")},
{Time: parseTimeUTC("2014-08-21 10:20:30")},
{Time: parseTimeUTC("2014-08-22 10:20:30")},
{Time: parseTimeUTC("2014-10-01 10:20:30"), Tags: []string{"foo"}},
{Time: parseTimeUTC("2014-10-02 10:20:30"), Tags: []string{"foo"}},
{Time: parseTimeUTC("2014-10-05 10:20:30"), Tags: []string{"foo"}},
{Time: parseTimeUTC("2014-10-06 10:20:30"), Tags: []string{"foo"}},
{Time: parseTimeUTC("2014-10-08 10:20:30"), Tags: []string{"foo"}},
{Time: parseTimeUTC("2014-10-09 10:20:30"), Tags: []string{"foo"}},
{Time: parseTimeUTC("2014-10-10 10:20:30"), Tags: []string{"foo"}},
{Time: parseTimeUTC("2014-10-11 10:20:30"), Tags: []string{"foo"}},
{Time: parseTimeUTC("2014-10-20 10:20:30"), Tags: []string{"foo"}},
{Time: parseTimeUTC("2014-10-22 10:20:30"), Tags: []string{"foo"}},
{Time: parseTimeUTC("2014-11-08 10:20:30"), Tags: []string{"foo"}},
{Time: parseTimeUTC("2014-11-10 10:20:30"), Tags: []string{"foo"}},
{Time: parseTimeUTC("2014-11-12 10:20:30"), Tags: []string{"foo"}},
{Time: parseTimeUTC("2014-11-13 10:20:30"), Tags: []string{"foo"}},
{Time: parseTimeUTC("2014-11-13 10:20:30.1"), Tags: []string{"bar"}},
{Time: parseTimeUTC("2014-11-15 10:20:30"), Tags: []string{"foo", "bar"}},
{Time: parseTimeUTC("2014-11-18 10:20:30")},
{Time: parseTimeUTC("2014-11-20 10:20:30")},
{Time: parseTimeUTC("2014-11-21 10:20:30")},
{Time: parseTimeUTC("2014-11-22 10:20:30")},
{Time: parseTimeUTC("2015-09-01 10:20:30")},
{Time: parseTimeUTC("2015-09-02 10:20:30")},
{Time: parseTimeUTC("2015-09-05 10:20:30")},
{Time: parseTimeUTC("2015-09-06 10:20:30")},
{Time: parseTimeUTC("2015-09-08 10:20:30")},
{Time: parseTimeUTC("2015-09-09 10:20:30")},
{Time: parseTimeUTC("2015-09-10 10:20:30")},
{Time: parseTimeUTC("2015-09-11 10:20:30")},
{Time: parseTimeUTC("2015-09-20 10:20:30")},
{Time: parseTimeUTC("2015-09-22 10:20:30")},
{Time: parseTimeUTC("2015-08-08 10:20:30")},
{Time: parseTimeUTC("2015-08-10 10:20:30")},
{Time: parseTimeUTC("2015-08-12 10:20:30")},
{Time: parseTimeUTC("2015-08-13 10:20:30")},
{Time: parseTimeUTC("2015-08-13 10:20:30.1")},
{Time: parseTimeUTC("2015-08-15 10:20:30")},
{Time: parseTimeUTC("2015-08-18 10:20:30")},
{Time: parseTimeUTC("2015-08-20 10:20:30")},
{Time: parseTimeUTC("2015-08-21 10:20:30")},
{Time: parseTimeUTC("2015-08-22 10:20:30")},
{Time: parseTimeUTC("2015-10-01 10:20:30")},
{Time: parseTimeUTC("2015-10-02 10:20:30")},
{Time: parseTimeUTC("2015-10-05 10:20:30")},
{Time: parseTimeUTC("2015-10-06 10:20:30")},
{Time: parseTimeUTC("2015-10-08 10:20:30")},
{Time: parseTimeUTC("2015-10-09 10:20:30")},
{Time: parseTimeUTC("2015-10-10 10:20:30")},
{Time: parseTimeUTC("2015-10-11 10:20:30")},
{Time: parseTimeUTC("2015-10-20 10:20:30")},
{Time: parseTimeUTC("2015-10-22 10:20:30")},
{Time: parseTimeUTC("2015-10-22 10:20:30")},
{Time: parseTimeUTC("2015-10-22 10:20:30"), Tags: []string{"foo", "bar"}},
{Time: parseTimeUTC("2015-10-22 10:20:30"), Tags: []string{"foo", "bar"}},
{Time: parseTimeUTC("2015-10-22 10:20:30"), Tags: []string{"foo", "bar"}, Paths: []string{"path1", "path2"}},
{Time: parseTimeUTC("2015-11-08 10:20:30")},
{Time: parseTimeUTC("2015-11-10 10:20:30")},
{Time: parseTimeUTC("2015-11-12 10:20:30")},
{Time: parseTimeUTC("2015-11-13 10:20:30")},
{Time: parseTimeUTC("2015-11-13 10:20:30.1")},
{Time: parseTimeUTC("2015-11-15 10:20:30")},
{Time: parseTimeUTC("2015-11-18 10:20:30")},
{Time: parseTimeUTC("2015-11-20 10:20:30")},
{Time: parseTimeUTC("2015-11-21 10:20:30")},
{Time: parseTimeUTC("2015-11-22 10:20:30")},
{Time: parseTimeUTC("2016-01-01 01:02:03")},
{Time: parseTimeUTC("2016-01-01 01:03:03")},
{Time: parseTimeUTC("2016-01-01 07:08:03")},
{Time: parseTimeUTC("2016-01-03 07:02:03")},
{Time: parseTimeUTC("2016-01-04 10:23:03")},
{Time: parseTimeUTC("2016-01-04 11:23:03")},
{Time: parseTimeUTC("2016-01-04 12:23:03")},
{Time: parseTimeUTC("2016-01-04 12:24:03")},
{Time: parseTimeUTC("2016-01-04 12:28:03")},
{Time: parseTimeUTC("2016-01-04 12:30:03")},
{Time: parseTimeUTC("2016-01-04 16:23:03")},
{Time: parseTimeUTC("2016-01-05 09:02:03")},
{Time: parseTimeUTC("2016-01-06 08:02:03")},
{Time: parseTimeUTC("2016-01-07 10:02:03")},
{Time: parseTimeUTC("2016-01-08 20:02:03")},
{Time: parseTimeUTC("2016-01-09 21:02:03")},
{Time: parseTimeUTC("2016-01-12 21:02:03")},
{Time: parseTimeUTC("2016-01-12 21:08:03")},
{Time: parseTimeUTC("2016-01-18 12:02:03")},
}
var tests = []restic.ExpirePolicy{
{},
{Last: 10},
{Last: 15},
{Last: 99},
{Last: 200},
{Hourly: 20},
{Daily: 3},
{Daily: 10},
{Daily: 30},
{Last: 5, Daily: 5},
{Last: 2, Daily: 10},
{Weekly: 2},
{Weekly: 4},
{Daily: 3, Weekly: 4},
{Monthly: 6},
{Daily: 2, Weekly: 2, Monthly: 6},
{Yearly: 10},
{Daily: 7, Weekly: 2, Monthly: 3, Yearly: 10},
{Tags: []restic.TagList{{"foo"}}},
{Tags: []restic.TagList{{"foo", "bar"}}},
{Tags: []restic.TagList{{"foo"}, {"bar"}}},
{Within: parseDuration("1d")},
{Within: parseDuration("2d")},
{Within: parseDuration("7d")},
{Within: parseDuration("1m")},
{Within: parseDuration("1m14d")},
{Within: parseDuration("1y1d1m")},
{Within: parseDuration("13d23h")},
{Within: parseDuration("2m2h")},
{Within: parseDuration("1y2m3d3h")},
{WithinHourly: parseDuration("1y2m3d3h")},
{WithinDaily: parseDuration("1y2m3d3h")},
{WithinWeekly: parseDuration("1y2m3d3h")},
{WithinMonthly: parseDuration("1y2m3d3h")},
{WithinYearly: parseDuration("1y2m3d3h")},
{Within: parseDuration("1h"),
WithinHourly: parseDuration("1d"),
WithinDaily: parseDuration("7d"),
WithinWeekly: parseDuration("1m"),
WithinMonthly: parseDuration("1y"),
WithinYearly: parseDuration("9999y")},
}
for i, p := range tests {
t.Run("", func(t *testing.T) {
keep, remove, reasons := restic.ApplyPolicy(testExpireSnapshots, p)
if len(keep)+len(remove) != len(testExpireSnapshots) {
t.Errorf("len(keep)+len(remove) = %d != len(testExpireSnapshots) = %d",
len(keep)+len(remove), len(testExpireSnapshots))
}
if p.Sum() > 0 && len(keep) > p.Sum() {
t.Errorf("not enough snapshots removed: policy allows %v snapshots to remain, but ended up with %v",
p.Sum(), len(keep))
}
if len(keep) != len(reasons) {
t.Errorf("got %d keep reasons for %d snapshots to keep, these must be equal", len(reasons), len(keep))
}
goldenFilename := filepath.Join("testdata", fmt.Sprintf("policy_keep_snapshots_%d", i))
if *updateGoldenFiles {
saveGoldenFile(t, goldenFilename, keep, reasons)
}
want := loadGoldenFile(t, goldenFilename)
cmpOpts := cmpopts.IgnoreUnexported(restic.Snapshot{})
if !cmp.Equal(want.Keep, keep, cmpOpts) {
t.Error(cmp.Diff(want.Keep, keep, cmpOpts))
}
if !cmp.Equal(want.Reasons, reasons, cmpOpts) {
t.Error(cmp.Diff(want.Reasons, reasons, cmpOpts))
}
})
}
}
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