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Pass a seat held once to its only claimant when its recorded holder is assigned nowhere (issue 1317, ADR 0449)

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mesh-tools
2026-10-19 21:21:32 +00:00
parent caa3fc8995
commit 666dcff79b
7 changed files with 467 additions and 2 deletions
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internal/inventory/holdings_test.go
+21
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@@ -153,3 +153,24 @@ func TestAReplicatedSeatHasSeveralHoldersOnRecord(t *testing.T) {
t.Fatalf("a handover left other holders on record: %+v", held)
}
}
// A pass is a compare-and-set: it moves the record only while the holder it was read with is still on it.
func TestPassingASeatMovesTheRecordOnceAndOnlyFromTheHolderRead(t *testing.T) {
inv, ctx := twoBrokersOnTwoNodes(t)
if err := inv.HoldSeat(ctx, "mesh-broker", catalogue.ScopeMesh, "anchor", "old-broker"); err != nil {
t.Fatal(err)
}
from := catalogue.Held{Claim: "mesh-broker", Scope: catalogue.ScopeMesh, Node: "anchor", Module: "old-broker"}
to := catalogue.Held{Claim: "mesh-broker", Scope: catalogue.ScopeMesh, Node: "laptop", Module: "new-broker"}
passed, err := inv.PassSeat(ctx, "mesh-broker", catalogue.ScopeMesh, from, to)
if err != nil || !passed {
t.Fatalf("the seat was not passed: %v %v", passed, err)
}
held, _ := inv.Holdings(ctx)
if len(held) != 1 || held[0].Node != "laptop" || held[0].Module != "new-broker" {
t.Fatalf("the record does not name the new holder alone: %+v", held)
}
if passed, err = inv.PassSeat(ctx, "mesh-broker", catalogue.ScopeMesh, from, to); err != nil || passed {
t.Fatalf("a second pass from the same read moved the record again: %v %v", passed, err)
}
}