package model

import "testing"

func TestValidKnowledgeTransition(t *testing.T) {
	ok := [][2]string{
		{"draft", "review"},
		{"review", "published"},
		{"published", "withdrawn"},
		{"withdrawn", "review"},
	}
	for _, tr := range ok {
		if !ValidKnowledgeTransition(tr[0], tr[1]) {
			t.Errorf("expected %s -> %s", tr[0], tr[1])
		}
	}
	if ValidKnowledgeTransition("draft", "published") {
		t.Error("draft 不能直接 published")
	}
	if ValidKnowledgeTransition("published", "draft") {
		t.Error("published 不能回草稿")
	}
}