package cli

import "testing"

func TestChangedConfigFields(t *testing.T) {
	var a siteConfigFile
	a.Meta.ConfigVersion = 1
	a.Meta.UpdatedAt = "2026-05-28T12:00:00+08:00"
	a.Site.Title = "A"
	a.Content.PostsDir = "content/posts"
	a.Build.OutputDir = "dist/site"

	b := a
	if fields := changedConfigFields(a, b); len(fields) != 0 {
		t.Fatalf("unchanged config fields = %#v", fields)
	}

	b.Site.Title = "B"
	b.Build.OutputDir = "dist/other"
	fields := changedConfigFields(a, b)
	if len(fields) != 2 || fields[0] != "site.title" || fields[1] != "build.output_dir" {
		t.Fatalf("changed fields = %#v", fields)
	}
}

func TestParseTime(t *testing.T) {
	if _, ok := parseTime("2026-05-28T12:00:00+08:00"); !ok {
		t.Fatal("expected RFC3339 time to parse")
	}
	if _, ok := parseTime("not-time"); ok {
		t.Fatal("expected invalid time")
	}
}