internal/net/iac_test.go


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package net

import "testing"

// Regression: stripIAC required a third byte, so a trailing 2-byte IAC command
// leaked its option byte into player input.
func TestStripIACDropsTruncatedSequence(t *testing.T) {
	got := stripIAC("abc" + string([]byte{iac, 0xf1}))
	if got != "abc" {
		t.Fatalf("stripIAC(truncated) = %q, want %q", got, "abc")
	}
	// A full subnegotiation is still removed.
	got = stripIAC("x" + string([]byte{iac, sb, 1, 2}) + string([]byte{iac, se}) + "y")
	if got != "xy" {
		t.Fatalf("stripIAC(subnegotiation) = %q, want xy", got)
	}
}