package task

import "testing"

func TestValidStoryTransition_Valid(t *testing.T) {
	cases := []struct {
		from StoryState
		to   StoryState
	}{
		{StoryPending, StoryInProgress},
		{StoryInProgress, StoryShippable},
		{StoryInProgress, StoryNeedsFix},
		{StoryNeedsFix, StoryInProgress},
		{StoryShippable, StoryDeployed},
		{StoryDeployed, StoryValidating},
		{StoryValidating, StoryReviewReady},
		{StoryValidating, StoryNeedsFix},
	}
	for _, tc := range cases {
		if !ValidStoryTransition(tc.from, tc.to) {
			t.Errorf("expected valid transition %s → %s", tc.from, tc.to)
		}
	}
}

func TestValidStoryTransition_Invalid(t *testing.T) {
	cases := []struct {
		from StoryState
		to   StoryState
	}{
		{StoryPending, StoryDeployed},
		{StoryReviewReady, StoryPending},
		{StoryReviewReady, StoryInProgress},
		{StoryReviewReady, StoryShippable},
		{StoryShippable, StoryPending},
	}
	for _, tc := range cases {
		if ValidStoryTransition(tc.from, tc.to) {
			t.Errorf("expected invalid transition %s → %s", tc.from, tc.to)
		}
	}
}