jschoubben
71f8e548aa
Builds: design 47 G §59, §407 Claude-Session: https://claude.ai/code/session_01JG73KEq4zoDfM9WtYpcQgZ
69 lines
2.4 KiB
Go
69 lines
2.4 KiB
Go
package stateobjects
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import (
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"bytes"
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"strings"
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"testing"
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)
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// ADR 0666 §16: a reply or an event over the per-message limit carries the name of an object, and the receiver reads it
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// back whole; one that fits is sent as it is.
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func TestABodyOverTheMessageLimitIsSentAsAReference(t *testing.T) {
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m := newMemory()
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s := Sender{Objects: memObjects{m}, Store: "m_sent-objects"}
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fetch := ProcessFetch(memObjects{m})
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for _, label := range []string{"reply.list", "event.done"} {
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body := []byte(`{"text":"` + strings.Repeat("y", 3<<20) + `"}`)
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sent, err := s.Send(label, body)
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if err != nil || len(sent) > MessageLimit {
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t.Fatalf("%s: sent %d bytes, %v", label, len(sent), err)
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}
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if _, isRef := ReadRef(sent); !isRef {
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t.Fatalf("%s: a 3 MiB body was sent whole", label)
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}
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got, err := Receive(sent, fetch)
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if err != nil || !bytes.Equal(got, body) {
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t.Fatalf("%s: received %d bytes, %v", label, len(got), err)
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}
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}
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small := []byte(`{"a":1}`)
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if sent, err := s.Send("x", small); err != nil || !bytes.Equal(sent, small) {
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t.Fatalf("a small body: %s, %v", sent, err)
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}
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if got, err := Receive(small, fetch); err != nil || !bytes.Equal(got, small) {
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t.Fatalf("receive a small body: %s, %v", got, err)
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}
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// an object that is not the one the reference names is refused
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sent, _ := s.Send("reply.again", bytes.Repeat([]byte("z"), 2<<20))
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ref, _ := ReadRef(sent)
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m.objects[ref.Object] = []byte("tampered")
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if _, err := Receive(sent, fetch); err == nil {
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t.Fatal("a tampered object was accepted")
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}
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// a bundle's store takes at most what one runtime message carries
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bundle := Sender{Objects: BundleObjects{}, Store: "m_sent-objects"}
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if _, err := bundle.Send("reply.huge", make([]byte, BundleObjectMost+1)); err == nil {
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t.Fatal("a bundle sent a body its runtime cannot carry")
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}
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}
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// A bundle reads a sent object through the runtime's sent-get.
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func TestABundleReadsASentObjectThroughTheRuntime(t *testing.T) {
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m := newMemory()
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body := []byte(`{"text":"` + strings.Repeat("y", 3<<20) + `"}`)
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sent, err := Sender{Objects: memObjects{m}, Store: "m_sent-objects"}.Send("reply.list", body)
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if err != nil {
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t.Fatal(err)
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}
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out := runtimeOf(t, m, func() (any, error) {
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got, err := Receive(sent, BundleFetch)
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if err != nil || !bytes.Equal(got, body) {
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t.Errorf("received %d bytes, %v", len(got), err)
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}
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return "done", nil
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})
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if !strings.Contains(out.(string), "done") {
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t.Fatalf("the bundle answered %v", out)
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}
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}
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