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zeekayandHanzo Dev
ea1b0efe60
G-Chain indexes what other chains have already agreed, so it holds no state of its own to agree on and never advances past genesis. That was written down in a comment on its state and nowhere the code could be read from: BuildBlock answered a generic "not implemented", which reads as an omission, and WaitForEvent's comment said it would one day wait for queued schema updates, which invites exactly the latch the other chains just got. Both now name the reason. A block here would carry a query result, which a peer recomputes from state, or a schema, which is local configuration; neither is something the network votes on. A test pins it, so the difference between a chain with nothing to say and a chain with no way to say it stays visible. BridgeRequest.Status was a string whose valid values lived in a comment beside it, while the same lifecycle already had a type and eight constants on BridgeRequestRecord. One concept, two representations, and the one the watcher wrote to was the untyped one. It now uses the type. Co-authored-by: Hanzo Dev <[email protected]>
37 lines
1.3 KiB
Go
37 lines
1.3 KiB
Go
// Copyright (C) 2019-2025, Lux Industries Inc. All rights reserved.
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// See the file LICENSE for licensing terms.
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package graphvm
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import (
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"context"
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"errors"
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"testing"
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"time"
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)
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// TestThisChainBuildsNoBlocks pins the design rather than the omission it looks
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// like. G-Chain indexes what other chains have already agreed, so it holds no
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// state of its own to agree on. A block here would carry a query result, which
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// a peer recomputes from state, or a schema, which is local configuration —
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// neither is something the network votes on.
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//
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// The other chains here had work and no way to tell consensus about it, and were
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// given a latch. This one has nothing to tell, and a latch would wake a builder
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// that declines. The test exists so that difference stays visible.
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func TestThisChainBuildsNoBlocks(t *testing.T) {
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vm := &VM{}
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_, err := vm.BuildBlock(context.Background())
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if !errors.Is(err, errReadOnlyChain) {
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t.Fatalf("BuildBlock must decline for the stated reason, got: %v", err)
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}
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// And it reports no work, however long anyone waits.
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ctx, cancel := context.WithTimeout(context.Background(), 100*time.Millisecond)
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defer cancel()
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if _, err := vm.WaitForEvent(ctx); !errors.Is(err, context.DeadlineExceeded) {
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t.Fatalf("WaitForEvent reported work on a chain that builds nothing: %v", err)
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}
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}
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