package hostclaim

import "testing"

// m-2: transition authority and observation catch-up are different questions.
func TestPlan9Fix2ObservationCatchesUpAcrossAdjacentTableEdgesOnly(t *testing.T) {
	for _, c := range []struct {
		kind, from, to string
		observes       bool
	}{
		{KindLanding, PhaseLandingProbing, PhaseLandingProbing, true},
		{KindLanding, PhaseLandingProbing, PhaseLandingProbed, true},
		{KindLanding, PhaseLandingProbing, PhaseLandingCommitted, true},
		{KindLanding, PhaseLandingProbed, PhaseLandingCommitted, true},
		{KindLanding, PhaseLandingCommitted, PhaseLandingProbed, false},
		{KindLanding, PhaseLandingProbed, PhaseLandingProbing, false},
		{KindLanding, PhaseLandingProbing, "restored", false},
		{KindLanding, "restored", PhaseLandingCommitted, false},
		{KindRestoring, "releasing", "released", false},
		{"", PhaseLandingProbing, PhaseLandingProbed, false},
	} {
		if got := SessionObserves(c.kind, c.from, c.to); got != c.observes {
			t.Errorf("SessionObserves(%q,%q,%q) = %v, want %v", c.kind, c.from, c.to, got, c.observes)
		}
	}
	// Write authority for an actual transition still never skips a step.
	if SessionContinues(KindLanding, PhaseLandingProbing, PhaseLandingCommitted) {
		t.Fatal("SessionContinues allows a skipped transition")
	}
}