jschoubben
76c48fa074
A node applies exactly the composition its want names (ADR 0539 clause 1), which may be a revision a newer one replaced: its files over 64 KiB stay until no want names it.
44 lines
2.0 KiB
Go
44 lines
2.0 KiB
Go
package main
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import (
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"encoding/json"
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"strings"
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"testing"
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sdkdelivery "git.novox.be/novox/mesh-sdk/go/delivery"
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"github.com/nats-io/nats.go/jetstream"
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)
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// 1945 (the review's C1): the sweep keeps the files of a key's newest composition and of every older revision a want
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// of the node still names, so a node told to apply a replaced revision finds its files; an older revision no want names,
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// and a deleted key, keep nothing.
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func TestTheSweepKeepsWhatAWantStillNames(t *testing.T) {
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revision := func(content string, rev uint64, op jetstream.KeyValueOp) fakeComposedEntry {
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c := sdkdelivery.Composed{Node: "ace", Module: "m", FP: sdkdelivery.SourcePrefix2 + strings.Repeat("a", 64),
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Resources: []json.RawMessage{json.RawMessage(`{"id":"m.f","type":"file","module":"m","path":"/etc/m","content":"` + content + `"}`)}}
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raw, err := sdkdelivery.EncodeComposed(c)
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if err != nil {
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t.Fatal(err)
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}
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return fakeComposedEntry{key: "k", value: raw, rev: rev, op: op}
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}
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digestOfEntry := func(e fakeComposedEntry) string {
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c, _ := sdkdelivery.DecodeComposed(e.value)
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d, _ := sdkdelivery.ComposedDigestOf(c)
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return d
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}
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one, two, three := revision("one", 1, jetstream.KeyValuePut), revision("two", 2, jetstream.KeyValuePut), revision("three", 3, jetstream.KeyValuePut)
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history := []jetstream.KeyValueEntry{one, two, three}
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kept := keptRevisions(history, map[string]bool{digestOfEntry(one): true})
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if len(kept) != 2 || string(kept[0]) != string(one.value) || string(kept[1]) != string(three.value) {
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t.Errorf("kept %d revisions, want the wanted first and the newest", len(kept))
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}
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if kept := keptRevisions(history, map[string]bool{}); len(kept) != 1 {
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t.Errorf("with no want, kept %d revisions, want the newest alone", len(kept))
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}
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deleted := []jetstream.KeyValueEntry{one, fakeComposedEntry{key: "k", rev: 2, op: jetstream.KeyValueDelete}}
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if kept := keptRevisions(deleted, map[string]bool{}); len(kept) != 0 {
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t.Errorf("a deleted key kept %d revisions", len(kept))
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}
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}
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