package model

import "testing"

func TestValidTransitions(t *testing.T) {
	cases := []struct {
		from, to Status
		want     bool
	}{
		{StatusDraft, StatusCollecting, true},
		{StatusDraft, StatusRunning, false},
		{StatusReady, StatusApproved, true},
		{StatusApproved, StatusRunning, true},
		{StatusRunning, StatusSuccess, true},
		{StatusRunning, StatusClosed, false},
		{StatusSuccess, StatusClosed, true},
		{StatusClosed, StatusDraft, false},
	}

	for _, c := range cases {
		if got := IsValidTransition(c.from, c.to); got != c.want {
			t.Errorf("IsValidTransition(%q, %q) = %v, want %v", c.from, c.to, got, c.want)
		}
	}
}

func TestIsTerminal(t *testing.T) {
	terminal := []Status{StatusSuccess, StatusCancelled, StatusAborted, StatusClosed}
	for _, s := range terminal {
		if !IsTerminal(s) {
			t.Errorf("IsTerminal(%q) = false, want true", s)
		}
	}
	nonTerminal := []Status{StatusDraft, StatusReady, StatusRunning, StatusCollecting, StatusApproved, StatusFailed, StatusTimeout}
	for _, s := range nonTerminal {
		if IsTerminal(s) {
			t.Errorf("IsTerminal(%q) = true, want false", s)
		}
	}
}

func TestAllStatusesCoverage(t *testing.T) {
	seen := make(map[Status]bool)
	for _, s := range AllStatuses {
		seen[s] = true
	}
	if len(seen) != 11 {
		t.Fatalf("AllStatuses has %d unique statuses, want 11", len(seen))
	}
}