package build

import (
	"strings"
	"testing"
)

// Design 47 G §568: a key's error opens `transport fault:` only when every lane failed on one.
func TestKeyErrorOpensTransportFaultOnlyWhenAllLanesDid(t *testing.T) {
	tf := "transport fault: deadline, node-build-go ace, i/o timeout"
	if got := keyError([]string{tf, "mesh-build-node on g14: the step failed: tsc: 2 errors"}); strings.HasPrefix(got, "transport fault:") {
		t.Errorf("beside a real failure the key opens %q", got)
	}
	if got := keyError([]string{tf, tf}); !strings.HasPrefix(got, "transport fault:") {
		t.Errorf("two transport faults open %q", got)
	}
}