Function TestSelfSend_DetectionEdgeCases

internal/agent/selfsend_test.go:21–47

TestSelfSend_DetectionEdgeCases: case-insensitive, whitespace- trimmed, single-address requirement. Mixed/external recipients must fall through to SMTP (covered indirectly — TestSendEmailViaSMTP already exercises the non-loopback path).

(t *testing.T)

// fall through to SMTP (covered indirectly — TestSendEmailViaSMTP
// already exercises the non-loopback path).
func TestSelfSend_DetectionEdgeCases(t *testing.T) {
	cases := []struct {
		name   string
		to     []string
		cc     []string
		want   bool
		reason string
	}{
		{"exact match", []string{"bot@x.com"}, nil, true, ""},
		{"case-insensitive local", []string{"BOT@x.com"}, nil, true, "ASCII case-insensitive"},
		{"case-insensitive domain", []string{"bot@X.COM"}, nil, true, "domain comparison is case-insensitive"},
		{"whitespace trimmed", []string{"  bot@x.com  "}, nil, true, "trim should normalize"},
		{"different address", []string{"other@x.com"}, nil, false, "not self"},
		{"self plus external in To", []string{"bot@x.com", "other@x.com"}, nil, false, "external recipient → SMTP"},
		{"self plus cc", []string{"bot@x.com"}, []string{"cc@x.com"}, false, "cc → SMTP"},
		{"empty to", []string{}, nil, false, ""},
	}
	for _, c := range cases {
		t.Run(c.name, func(t *testing.T) {
			req := outbound.SendRequest{To: c.to, CC: c.cc}
			got := agent.IsSelfSendForTest(req, "bot@x.com")
			if got != c.want {
				t.Errorf("isSelfSend(%v, cc=%v) = %v, want %v (%s)", c.to, c.cc, got, c.want, c.reason)
			}
		})
	}
}

// setupCoreAPI builds an *agent.API wired to a real test DB so tests can drive
// the extracted outbound core (DeliverOutbound) directly. The legacy