feat(mcp): brain_read + brain_edit, contained to the sync source (brain#4) #96
@@ -83,7 +83,7 @@ func (s *Service) Capture(ctx context.Context, in CaptureInput) (CaptureReceipt,
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declared, _ = classification.ParseLevel(in.Context.Classification)
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declared, _ = classification.ParseLevel(in.Context.Classification)
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}
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}
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effective, securityEvents := s.resolveClassification(declared, in)
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effective, securityEvents, escalators := s.resolveClassification(declared, in)
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// Server-derived origin governs the I1 gate; a caller-asserted harness
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// Server-derived origin governs the I1 gate; a caller-asserted harness
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// label that names a different zone is descriptive-only and logged as a
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// label that names a different zone is descriptive-only and logged as a
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@@ -107,8 +107,8 @@ func (s *Service) Capture(ctx context.Context, in CaptureInput) (CaptureReceipt,
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Items: nil, // refused before any write
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Items: nil, // refused before any write
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SecurityEvents: append(securityEvents, "I1 refusal: confidential capture via us-nexus origin"),
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SecurityEvents: append(securityEvents, "I1 refusal: confidential capture via us-nexus origin"),
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}, AuditCentral)
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}, AuditCentral)
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return CaptureReceipt{}, fmt.Errorf("%w: effective classification confidential through %s origin",
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return CaptureReceipt{}, fmt.Errorf("%w: effective classification confidential through %s origin (%s)",
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ErrSovereigntyRefused, in.Context.Origin)
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ErrSovereigntyRefused, in.Context.Origin, escalationReason(escalators))
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}
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}
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receipt := CaptureReceipt{
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receipt := CaptureReceipt{
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@@ -221,15 +221,28 @@ func (s *Service) validate(in CaptureInput) error {
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return nil
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return nil
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}
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}
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// resolveClassification computes the effective level (stricter of
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// resolveClassification computes the effective level (stricter of declared
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// declared and every target's derived level) and collects a security
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// and every target's derived level), collects a security event whenever the
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// event whenever the caller under-declared relative to a target floor.
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// caller under-declared relative to a target floor, and names the targets
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func (s *Service) resolveClassification(declared classification.Level, in CaptureInput) (classification.Level, []string) {
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// that carry the strictest level.
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//
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// That third return is what makes an I1 refusal actionable. A caller sending
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// twenty tickets gets one refusal; without the offending target it cannot
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// tell which repo tripped the gate, and infra#265 shows what happens next —
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// the caller concluded the tickets ARRAY was broken, built a fallback of
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// twenty individual calls, and filed a bug against the wrong thing.
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func (s *Service) resolveClassification(declared classification.Level, in CaptureInput) (classification.Level, []string, []string) {
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effective := declared
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effective := declared
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var events []string
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var events []string
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derivedFor := map[string]classification.Level{}
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var order []string
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consider := func(kind classification.TargetKind, name string) {
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consider := func(kind classification.TargetKind, name string) {
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derived := s.policy.Derive(classification.Target{Kind: kind, Name: name})
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derived := s.policy.Derive(classification.Target{Kind: kind, Name: name})
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effective = classification.Stricter(effective, derived)
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effective = classification.Stricter(effective, derived)
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if _, seen := derivedFor[name]; !seen {
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derivedFor[name] = derived
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order = append(order, name)
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}
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if declared < derived {
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if declared < derived {
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events = append(events, fmt.Sprintf("classification under-declared: declared=%s target=%s(%s) derived=%s",
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events = append(events, fmt.Sprintf("classification under-declared: declared=%s target=%s(%s) derived=%s",
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declared, name, kindString(kind), derived))
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declared, name, kindString(kind), derived))
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@@ -241,7 +254,28 @@ func (s *Service) resolveClassification(declared classification.Level, in Captur
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for _, tk := range in.Tickets {
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for _, tk := range in.Tickets {
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consider(classification.RepoTarget, tk.Repo)
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consider(classification.RepoTarget, tk.Repo)
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}
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}
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return effective, events
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// Only targets that actually reach the effective level are named: at
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// twenty tickets, listing the innocent ones is noise that hides the one
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// that matters.
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var escalators []string
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for _, name := range order {
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if derivedFor[name] == effective && effective > declared {
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escalators = append(escalators, name)
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}
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}
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return effective, events, escalators
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}
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// escalationReason renders why the effective classification landed where it
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// did, for an operator reading a refusal. Naming the caller's own declaration
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// matters as much as naming a target: "you asked for this" and "a repo you
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// touched required it" call for different fixes.
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func escalationReason(escalators []string) string {
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if len(escalators) == 0 {
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return "declared by the caller; no target required it"
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}
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return "required by: " + strings.Join(escalators, ", ")
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}
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}
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func (s *Service) persistInsight(ctx context.Context, ins Insight) (InsightResult, string, error) {
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func (s *Service) persistInsight(ctx context.Context, ins Insight) (InsightResult, string, error) {
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@@ -3,6 +3,7 @@ package capture
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import (
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import (
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"context"
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"context"
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"errors"
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"errors"
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"fmt"
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"strings"
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"strings"
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"testing"
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"testing"
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"time"
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"time"
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@@ -59,12 +60,18 @@ type fakeTracker struct {
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closed []int
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closed []int
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comments []int
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comments []int
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err error
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err error
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// failOnTitle makes CreateIssue fail for one specific title, so a
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// partial-failure receipt can be exercised without failing every item.
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failOnTitle string
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}
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}
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func (f *fakeTracker) CreateIssue(_ context.Context, repo, title, _ string) (IssueRef, error) {
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func (f *fakeTracker) CreateIssue(_ context.Context, repo, title, _ string) (IssueRef, error) {
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if f.err != nil {
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if f.err != nil {
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return IssueRef{}, f.err
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return IssueRef{}, f.err
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}
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}
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if f.failOnTitle != "" && title == f.failOnTitle {
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return IssueRef{}, errors.New("tracker refused this one")
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}
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f.created = append(f.created, repo+":"+title)
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f.created = append(f.created, repo+":"+title)
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return IssueRef{Repo: repo, Number: 100 + len(f.created), URL: "https://git/" + repo + "/issues/x"}, nil
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return IssueRef{Repo: repo, Number: 100 + len(f.created), URL: "https://git/" + repo + "/issues/x"}, nil
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}
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}
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@@ -87,7 +94,9 @@ func (f *fakeTracker) CommentIssue(_ context.Context, repo string, number int, _
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// fakePolicy derives from an explicit map; default Internal so tests pin
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// fakePolicy derives from an explicit map; default Internal so tests pin
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// behaviour without depending on the real defaulting.
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// behaviour without depending on the real defaulting.
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type fakePolicy struct{ tags map[string]classification.Level }
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type fakePolicy struct {
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tags map[string]classification.Level
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}
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func (p fakePolicy) Derive(t classification.Target) classification.Level {
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func (p fakePolicy) Derive(t classification.Target) classification.Level {
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if lvl, ok := p.tags[t.Name]; ok {
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if lvl, ok := p.tags[t.Name]; ok {
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@@ -434,3 +443,98 @@ func TestCaptureDryRunSkipsAuditGate(t *testing.T) {
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assert.True(t, rec.DryRun)
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assert.True(t, rec.DryRun)
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assert.Empty(t, au.entries)
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assert.Empty(t, au.entries)
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}
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}
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// ---- hyperguild#91 part 1 -------------------------------------------------
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//
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// The reported symptom was "capture with a tickets array fails" (infra#265:
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// 20 tickets errored, 5 errored, caller fell back to 20 individual
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// issue_create calls). The array was never the failing dimension — every
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// ticket targeted a client repo, and the I1 gate refuses that through a
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// us-nexus origin at ANY length. The refusal did not say which target
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// escalated the classification, so it read as a malfunction.
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func TestCapture_TicketsArrayWorksAtLengthOne(t *testing.T) {
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b, tr, au := &fakeBrain{}, &fakeTracker{}, &fakeAudit{}
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svc := newSvc(b, tr, fakePolicy{}, au)
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rec, err := svc.Capture(context.Background(), CaptureInput{
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Context: baseCtx(),
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Tickets: []Ticket{{Repo: "hyperguild", Action: "create", Title: "one", Body: "b"}},
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})
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require.NoError(t, err)
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require.Len(t, rec.Tickets, 1)
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assert.True(t, rec.Tickets[0].OK)
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assert.Len(t, tr.created, 1)
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assert.Empty(t, rec.Errors)
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}
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func TestCapture_TicketsArrayWorksAtLengthMany(t *testing.T) {
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b, tr, au := &fakeBrain{}, &fakeTracker{}, &fakeAudit{}
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svc := newSvc(b, tr, fakePolicy{}, au)
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in := CaptureInput{Context: baseCtx()}
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for i := range 20 {
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in.Tickets = append(in.Tickets, Ticket{
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Repo: "hyperguild", Action: "create", Title: fmt.Sprintf("t%02d", i), Body: "b",
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})
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}
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rec, err := svc.Capture(context.Background(), in)
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require.NoError(t, err)
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require.Len(t, rec.Tickets, 20, "one receipt entry per ticket")
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for i, r := range rec.Tickets {
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assert.True(t, r.OK, "ticket %d failed: %+v", i, rec.Errors)
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}
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assert.Len(t, tr.created, 20)
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assert.Empty(t, rec.Errors)
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}
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func TestCapture_OneFailingTicketDoesNotSinkTheRest(t *testing.T) {
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// infra#265 asked explicitly: "if ticket 3 of 5 fails, what happened to
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// 1 and 2?" They land, and the receipt says so per item.
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b, au := &fakeBrain{}, &fakeAudit{}
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tr := &fakeTracker{failOnTitle: "boom"}
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svc := newSvc(b, tr, fakePolicy{}, au)
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rec, err := svc.Capture(context.Background(), CaptureInput{
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Context: baseCtx(),
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Tickets: []Ticket{
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{Repo: "hyperguild", Action: "create", Title: "ok-1", Body: "b"},
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{Repo: "hyperguild", Action: "create", Title: "boom", Body: "b"},
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{Repo: "hyperguild", Action: "create", Title: "ok-3", Body: "b"},
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},
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})
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require.NoError(t, err, "a per-item failure is a partial receipt, not a call error")
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require.Len(t, rec.Tickets, 3)
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assert.True(t, rec.Tickets[0].OK)
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assert.False(t, rec.Tickets[1].OK)
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assert.True(t, rec.Tickets[2].OK)
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require.Len(t, rec.Errors, 1)
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assert.Contains(t, rec.Errors[0].Item, "ticket[1]")
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}
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|
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func TestCapture_I1RefusalNamesWhatEscalatedTheClassification(t *testing.T) {
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|
// The actual defect behind infra#265. Without the offending target in
|
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// the message, a caller with 20 tickets cannot tell which repo tripped
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// the gate — and reasonably concludes the array itself is broken.
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b, tr, au := &fakeBrain{}, &fakeTracker{}, &fakeAudit{}
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pol := fakePolicy{tags: map[string]classification.Level{"trucker-ecommerce": classification.Confidential}}
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svc := newSvc(b, tr, pol, au)
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|
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|
ctx := baseCtx()
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|
ctx.Origin = ZoneUSNexus
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|
_, err := svc.Capture(context.Background(), CaptureInput{
|
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|
Context: ctx,
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|
Tickets: []Ticket{
|
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|
{Repo: "hyperguild", Action: "create", Title: "fine", Body: "b"},
|
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{Repo: "trucker-ecommerce", Action: "create", Title: "client work", Body: "b"},
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|
},
|
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|
})
|
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|
|
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|
require.ErrorIs(t, err, ErrSovereigntyRefused)
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assert.Contains(t, err.Error(), "trucker-ecommerce",
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"the refusal must name the target that escalated the classification")
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assert.NotContains(t, err.Error(), "hyperguild",
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"only the offending target, or the message is noise at 20 tickets")
|
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|
assert.Empty(t, tr.created, "refused before any write")
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|
}
|
||||||
|
|||||||
Reference in New Issue
Block a user