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From https://github.com/zrepl/zrepl/issues/691 The last_n prune rule keeps everything, regardless of if it matches the regex or not, if there are less than count snapshot. The expectation would be to never keep non-regex snapshots, regardless of number.
117 lines
2.4 KiB
Go
117 lines
2.4 KiB
Go
package pruning
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import (
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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func TestKeepLastN(t *testing.T) {
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o := func(minutes int) time.Time {
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return time.Unix(123, 0).Add(time.Duration(minutes) * time.Minute)
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}
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inputs := map[string][]Snapshot{
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"s1": []Snapshot{
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stubSnap{name: "1", date: o(10)},
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stubSnap{name: "2", date: o(20)},
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stubSnap{name: "3", date: o(15)},
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stubSnap{name: "4", date: o(30)},
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stubSnap{name: "5", date: o(30)},
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},
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"s2": []Snapshot{},
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}
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tcs := map[string]testCase{
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"keep2": {
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inputs: inputs["s1"],
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rules: []KeepRule{
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MustKeepLastN(2, ""),
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},
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expDestroy: map[string]bool{
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"1": true, "2": true, "3": true,
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},
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},
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"keep1OfTwoWithSameTime": { // Keep one of two with same time
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inputs: inputs["s1"],
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rules: []KeepRule{
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MustKeepLastN(1, ""),
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},
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expDestroy: map[string]bool{"1": true, "2": true, "3": true, "4": true},
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},
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"keepMany": {
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inputs: inputs["s1"],
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rules: []KeepRule{
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MustKeepLastN(100, ""),
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},
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expDestroy: map[string]bool{},
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},
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"empty_input": {
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inputs: inputs["s2"],
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rules: []KeepRule{
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MustKeepLastN(100, ""),
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},
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expDestroy: map[string]bool{},
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},
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"empty_regex": {
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inputs: inputs["s1"],
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rules: []KeepRule{
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MustKeepLastN(4, ""),
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},
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expDestroy: map[string]bool{
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"1": true,
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},
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},
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"multiple_regexes": {
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inputs: []Snapshot{
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stubSnap{"a1", false, o(10)},
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stubSnap{"b1", false, o(11)},
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stubSnap{"a2", false, o(20)},
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stubSnap{"b2", false, o(21)},
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stubSnap{"a3", false, o(30)},
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stubSnap{"b3", false, o(31)},
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},
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rules: []KeepRule{
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MustKeepLastN(2, "^a"),
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MustKeepLastN(2, "^b"),
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},
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expDestroy: map[string]bool{
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"a1": true,
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"b1": true,
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},
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},
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"keep_more_than_matching": {
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inputs: []Snapshot{
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stubSnap{"a1", false, o(10)},
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stubSnap{"b1", false, o(11)},
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stubSnap{"a2", false, o(12)},
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},
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rules: []KeepRule{
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MustKeepLastN(4, "a"),
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},
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expDestroy: map[string]bool{
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"b1": true,
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},
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},
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}
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testTable(tcs, t)
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t.Run("mustBePositive", func(t *testing.T) {
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var err error
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_, err = NewKeepLastN(0, "foo")
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assert.Error(t, err)
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_, err = NewKeepLastN(-5, "foo")
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assert.Error(t, err)
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})
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t.Run("emptyRegexAllowed", func(t *testing.T) {
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_, err := NewKeepLastN(23, "")
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require.NoError(t, err)
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})
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}
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