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Merge five moved overlay tests into two, offsetting the tests this release adds

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The test budget: mesh-host is over 500 unit tests, so the three tests
added for ADR 0593 §6 and §7 are paid for by folding the private
network's hub refusals, its MTU cases and its no-self-peer check into
table-driven tests, each case kept.

Claude-Session: https://claude.ai/code/session_01NcbgfJ9Gum47zkFKWRaovL
This commit is contained in:
jschoubben
2026-11-02 18:39:51 +01:00
parent f6bda12a32
commit acb720d2bf
2 changed files with 50 additions and 65 deletions
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internal/overlay/declaration_test.go
+13 -19
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@@ -287,25 +287,19 @@ func TestANodeWithNoTunnelAndNoEndpointStillListensOnNothing(t *testing.T) {
}
}
// A path tuned to a smaller MTU (1380 here) survives the takeover: the mesh interface comes up with the same MTU, or
// transfers hang silently (novox/hq: a taken tunnel carries its MTU). A tunnel that set none gets no MTU line.
func TestATakenTunnelCarriesItsMTU(t *testing.T) {
// A path tuned to a smaller MTU (1380 here) must survive the takeover — the mesh interface
// comes up with the same MTU, or transfers hang silently (novox/hq: a taken tunnel carries
// its MTU).
config, _ := declarationFor(t, Node{
Name: "shanks", Key: "SPOKE", Address: "10.10.0.3",
TakesOver: &TakeOver{Interface: "wg0", Port: 51820, MTU: 1380},
}, nil)
if !strings.Contains(config, "MTU = 1380") {
t.Fatalf("the tuned MTU was dropped:\n%s", config)
}
}
func TestNoMTULineWhenTheTunnelSetNone(t *testing.T) {
config, _ := declarationFor(t, Node{
Name: "shanks", Key: "SPOKE", Address: "10.10.0.3",
TakesOver: &TakeOver{Interface: "wg0", Port: 51820},
}, nil)
if strings.Contains(config, "MTU") {
t.Fatalf("no MTU was found, so none should be written:\n%s", config)
for _, c := range []struct {
mtu int
want string
}{{1380, "MTU = 1380"}, {0, ""}} {
config, _ := declarationFor(t, Node{
Name: "shanks", Key: "SPOKE", Address: "10.10.0.3",
TakesOver: &TakeOver{Interface: "wg0", Port: 51820, MTU: c.mtu},
}, nil)
if c.want != "" && !strings.Contains(config, c.want) || c.want == "" && strings.Contains(config, "MTU") {
t.Errorf("a tunnel of MTU %d gives:\n%s", c.mtu, config)
}
}
}